2.0.0-dev.3

add missing React key
improved lighting example
2026-06-04 21:34:23 +08:00 · 2021-02-21 19:23:06 +01:00 · 2021-02-21 16:28:17 +01:00 · 2021-02-20 01:59:46 -08:00 · 2021-02-18 21:20:14 -08:00 · 2021-02-18 21:16:46 -08:00
1164 changed files with 162816 additions and 51518 deletions
--- a/.eslintignore
+++ b/.eslintignore
@@ -0,0 +1,3 @@
+node_modules/*
+build/*
+lib/*
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -3,63 +3,94 @@
        "browser": true,
        "node": true
    },
-    "parser": "@typescript-eslint/parser",
    "parserOptions": {
-        "project": "tsconfig.json",
-        "sourceType": "module"
+        "ecmaVersion": 2018,
+        "sourceType": "module",
+        "ecmaFeatures": {
+            "impliedStrict": true
+        }
    },
-    "plugins": [
-        "@typescript-eslint"
-    ],
    "rules": {
-        "@typescript-eslint/ban-types": "warn",
-        "@typescript-eslint/class-name-casing": "off",
-        "@typescript-eslint/indent": [
-            "warn",
-            4
-        ],
-        "@typescript-eslint/member-delimiter-style": [
-            "off",
-            {
-                "multiline": {
-                    "delimiter": "none",
-                    "requireLast": true
-                },
-                "singleline": {
-                    "delimiter": "semi",
-                    "requireLast": false
-                }
-            }
-        ],
-        "@typescript-eslint/prefer-namespace-keyword": "warn",
-        "@typescript-eslint/quotes": [
-            "warn",
-            "single",
-            {
-                "avoidEscape": true,
-                "allowTemplateLiterals": true
-            }
-        ],
-        "@typescript-eslint/semi": [
-            "off",
-            null
-        ],
-        "@typescript-eslint/type-annotation-spacing": "warn",
+        "indent": "off",
        "arrow-parens": [
            "off",
            "as-needed"
        ],
+        "brace-style": "off",
+        "comma-spacing": "off",
+        "space-infix-ops": "error",
        "comma-dangle": "off",
        "eqeqeq": [
-            "warn",
+            "error",
            "smart"
        ],
        "import/order": "off",
        "no-eval": "warn",
        "no-new-wrappers": "warn",
-        "no-trailing-spaces": "warn",
+        "no-trailing-spaces": "error",
        "no-unsafe-finally": "warn",
-        "no-var": "warn",
-        "spaced-comment": "warn"
-    }
+        "no-var": "error",
+        "spaced-comment": "error",
+        "semi": "warn",
+        "no-restricted-syntax": [
+            "error",
+            {
+                "selector": "ExportDefaultDeclaration",
+                "message": "Default exports are not allowed"
+            }
+        ]
+    },
+    "overrides": [
+        {
+            "files": ["**/*.ts", "**/*.tsx"],
+            "parser": "@typescript-eslint/parser",
+            "parserOptions": {
+                "project": ["tsconfig.json", "tsconfig.commonjs.json"],
+                "sourceType": "module"
+            },
+            "plugins": [
+                "@typescript-eslint"
+            ],
+            "rules": {
+                "@typescript-eslint/ban-types": "off",
+                "@typescript-eslint/class-name-casing": "off",
+                "@typescript-eslint/indent": [
+                    "error",
+                    4
+                ],
+                "@typescript-eslint/member-delimiter-style": [
+                    "off",
+                    {
+                        "multiline": {
+                            "delimiter": "none",
+                            "requireLast": true
+                        },
+                        "singleline": {
+                            "delimiter": "semi",
+                            "requireLast": false
+                        }
+                    }
+                ],
+                "@typescript-eslint/prefer-namespace-keyword": "warn",
+                "@typescript-eslint/quotes": [
+                    "error",
+                    "single",
+                    {
+                        "avoidEscape": true,
+                        "allowTemplateLiterals": true
+                    }
+                ],
+                "@typescript-eslint/semi": [
+                    "off",
+                    null
+                ],
+                "@typescript-eslint/type-annotation-spacing": "error",
+                "@typescript-eslint/brace-style": [
+                    "error",
+                    "1tbs", { "allowSingleLine": true }
+                ],
+                "@typescript-eslint/comma-spacing": "error"
+            }
+        }
+    ]
 }
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -0,0 +1,18 @@
+on:
+  push:
+  pull_request:
+
+jobs:
+  eslint:
+    name: eslint
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v1
+    - name: install node v12
+      uses: actions/setup-node@v1
+      with:
+        node-version: 12
+    - name: yarn install
+      run: yarn install
+    - name: eslint
+      uses: icrawl/action-eslint@v1
--- a/.gitignore
+++ b/.gitignore
@@ -5,6 +5,7 @@ node_modules/
 debug.log
 npm-debug.log
 tsconfig.tsbuildinfo
+tsconfig.commonjs.tsbuildinfo

 *.sublime-workspace
 .idea
--- a/.npmignore
+++ b/.npmignore
@@ -0,0 +1 @@
+tsconfig.commonjs.buildinfo
--- a/.travis.yml
+++ b/.travis.yml
@@ -14,6 +14,5 @@ before_install:
 node_js:
  - "12"
  - "10"
-  - "8"
 before_script:
  - export DISPLAY=:99.0; sh -e /etc/init.d/xvfb start
--- a/README.md
+++ b/README.md
@@ -41,7 +41,7 @@ Moreover, the project contains the implementation of `servers`, including
 - `servers/volume` A tool for accessing volumetric experimental data related to molecular structures.
 - `servers/plugin-state` A basic server to store Mol* Plugin states.

-The project also contains performance tests (`perf-tests`), `examples`, and basic proof of concept `apps` (CIF to BinaryCIF converter and JSON domain annotation to CIF converter).
+The project also contains performance tests (`perf-tests`), `examples`, and basic proof of concept `cli` apps (CIF to BinaryCIF converter and JSON domain annotation to CIF converter).

 ## Previous Work
 This project builds on experience from previous solutions:
@@ -89,21 +89,29 @@ and navigate to `build/viewer`

 ### Code generation
 **CIF schemas**
-Install CIFTools `npm install ciftools -g`

-    cifschema -mip ../../../../mol-data -o src/mol-io/reader/cif/schema/mmcif.ts -p mmCIF
-    cifschema -mip ../../../../mol-data -o src/mol-io/reader/cif/schema/ccd.ts -p CCD
-    cifschema -mip ../../../../mol-data -o src/mol-io/reader/cif/schema/bird.ts -p BIRD
-    cifschema -mip ../../../../mol-data -o src/mol-io/reader/cif/schema/cif-core.ts -p CifCore -aa
+    node ./lib/commonjs/cli/cifschema -mip ../../../../mol-data -o src/mol-io/reader/cif/schema/mmcif.ts -p mmCIF
+    node ./lib/commonjs/cli/cifschema -mip ../../../../mol-data -o src/mol-io/reader/cif/schema/ccd.ts -p CCD
+    node ./lib/commonjs/cli/cifschema -mip ../../../../mol-data -o src/mol-io/reader/cif/schema/bird.ts -p BIRD
+    node ./lib/commonjs/cli/cifschema -mip ../../../../mol-data -o src/mol-io/reader/cif/schema/cif-core.ts -p CifCore -aa
+
+**Lipid names**
+
+    node lib/commonjs/cli/lipid-params -o src/mol-model/structure/model/types/lipids.ts
+
+**Ion names**
+
+    node --max-old-space-size=4096 lib/commonjs/cli/chem-comp-dict/create-ions.js src/mol-model/structure/model/types/ions.ts
+

 **GraphQL schemas**

-    ./node_modules/.bin/graphql-codegen -c ./data/rcsb-graphql/codegen.yml
+    node node_modules//@graphql-codegen/cli/bin -c src/extensions/rcsb/graphql/codegen.yml

 ### Other scripts
 **Create chem comp bond table**

-    export NODE_PATH="lib"; node --max-old-space-size=4096 lib/apps/chem-comp-bond/create-table.js build/data/ccb.bcif -b
+    node --max-old-space-size=4096 lib/commonjs/cli/chem-comp-dict/create-table.js build/data/ccb.bcif -b

 **Test model server**

@@ -115,9 +123,13 @@ Install CIFTools `npm install ciftools -g`

 **Convert any CIF to BinaryCIF**

-    node build/model-server/preprocess -i file.cif -ob file.bcif
+    node lib/servers/model/preprocess -i file.cif -ob file.bcif

-To see all available commands, use ``node build/model-server/preprocess -h``.
+To see all available commands, use ``node lib/servers/model/preprocess -h``.
+
+Or
+
+    node lib/commonjs/cli/cif2bcif

 ## Development

@@ -165,3 +177,4 @@ Funding sources include but are not limited to:
 * [RCSB PDB](https://www.rcsb.org) funding by a grant [DBI-1338415; PI: SK Burley] from the NSF, the NIH, and the US DoE
 * [PDBe, EMBL-EBI](https://pdbe.org)
 * [CEITEC](https://www.ceitec.eu/)
+* [EntosAI](https://www.entos.ai) (``alpha-orbitals`` extension)
--- a/data/cif-field-names/bird-field-names.csv
+++ b/data/cif-field-names/bird-field-names.csv
@@ -0,0 +1,88 @@
+pdbx_reference_molecule.prd_id
+pdbx_reference_molecule.name
+pdbx_reference_molecule.represent_as
+pdbx_reference_molecule.type
+pdbx_reference_molecule.type_evidence_code
+pdbx_reference_molecule.class
+pdbx_reference_molecule.class_evidence_code
+pdbx_reference_molecule.formula
+pdbx_reference_molecule.chem_comp_id
+pdbx_reference_molecule.formula_weight
+pdbx_reference_molecule.release_status
+pdbx_reference_molecule.replaces
+pdbx_reference_molecule.replaced_by
+pdbx_reference_molecule.compound_details
+pdbx_reference_molecule.description
+pdbx_reference_molecule.representative_PDB_id_code
+
+pdbx_reference_entity_list.prd_id
+pdbx_reference_entity_list.ref_entity_id
+pdbx_reference_entity_list.component_id
+pdbx_reference_entity_list.type
+pdbx_reference_entity_list.details
+
+pdbx_reference_entity_nonpoly.prd_id
+pdbx_reference_entity_nonpoly.ref_entity_id
+pdbx_reference_entity_nonpoly.name
+pdbx_reference_entity_nonpoly.chem_comp_id
+
+pdbx_reference_entity_link.prd_id
+pdbx_reference_entity_link.link_id
+pdbx_reference_entity_link.link_class
+pdbx_reference_entity_link.ref_entity_id_1
+pdbx_reference_entity_link.entity_seq_num_1
+pdbx_reference_entity_link.comp_id_1
+pdbx_reference_entity_link.atom_id_1
+pdbx_reference_entity_link.ref_entity_id_2
+pdbx_reference_entity_link.entity_seq_num_2
+pdbx_reference_entity_link.comp_id_2
+pdbx_reference_entity_link.atom_id_2
+pdbx_reference_entity_link.value_order
+pdbx_reference_entity_link.component_1
+pdbx_reference_entity_link.component_2
+pdbx_reference_entity_link.details
+
+pdbx_reference_entity_poly_link.prd_id
+pdbx_reference_entity_poly_link.ref_entity_id
+pdbx_reference_entity_poly_link.link_id
+pdbx_reference_entity_poly_link.atom_id_1
+pdbx_reference_entity_poly_link.comp_id_1
+pdbx_reference_entity_poly_link.entity_seq_num_1
+pdbx_reference_entity_poly_link.atom_id_2
+pdbx_reference_entity_poly_link.comp_id_2
+pdbx_reference_entity_poly_link.entity_seq_num_2
+pdbx_reference_entity_poly_link.value_order
+pdbx_reference_entity_poly_link.component_id
+
+pdbx_reference_entity_poly.prd_id
+pdbx_reference_entity_poly.ref_entity_id
+pdbx_reference_entity_poly.db_code
+pdbx_reference_entity_poly.db_name
+pdbx_reference_entity_poly.type
+
+pdbx_reference_entity_sequence.prd_id
+pdbx_reference_entity_sequence.ref_entity_id
+pdbx_reference_entity_sequence.type
+pdbx_reference_entity_sequence.NRP_flag
+pdbx_reference_entity_sequence.one_letter_codes
+
+pdbx_reference_entity_poly_seq.prd_id
+pdbx_reference_entity_poly_seq.ref_entity_id
+pdbx_reference_entity_poly_seq.num
+pdbx_reference_entity_poly_seq.mon_id
+pdbx_reference_entity_poly_seq.parent_mon_id
+pdbx_reference_entity_poly_seq.hetero
+pdbx_reference_entity_poly_seq.observed
+
+pdbx_reference_entity_src_nat.prd_id
+pdbx_reference_entity_src_nat.ref_entity_id
+pdbx_reference_entity_src_nat.ordinal
+pdbx_reference_entity_src_nat.taxid
+pdbx_reference_entity_src_nat.organism_scientific
+pdbx_reference_entity_src_nat.db_code
+pdbx_reference_entity_src_nat.db_name
+
+pdbx_prd_audit.prd_id
+pdbx_prd_audit.date
+pdbx_prd_audit.processing_site
+pdbx_prd_audit.action_type
--- a/data/cif-field-names/ccd-field-names.csv
+++ b/data/cif-field-names/ccd-field-names.csv
@@ -0,0 +1,60 @@
+chem_comp.id
+chem_comp.name
+chem_comp.type
+chem_comp.pdbx_type
+chem_comp.formula
+chem_comp.mon_nstd_parent_comp_id
+chem_comp.pdbx_synonyms
+chem_comp.pdbx_formal_charge
+chem_comp.pdbx_initial_date
+chem_comp.pdbx_modified_date
+chem_comp.pdbx_ambiguous_flag
+chem_comp.pdbx_release_status
+chem_comp.pdbx_replaced_by
+chem_comp.pdbx_replaces
+chem_comp.formula_weight
+chem_comp.one_letter_code
+chem_comp.three_letter_code
+chem_comp.pdbx_model_coordinates_details
+chem_comp.pdbx_model_coordinates_missing_flag
+chem_comp.pdbx_ideal_coordinates_details
+chem_comp.pdbx_ideal_coordinates_missing_flag
+chem_comp.pdbx_model_coordinates_db_code
+chem_comp.pdbx_processing_site
+
+chem_comp_atom.comp_id
+chem_comp_atom.atom_id
+chem_comp_atom.alt_atom_id
+chem_comp_atom.type_symbol
+chem_comp_atom.charge
+chem_comp_atom.pdbx_align
+chem_comp_atom.pdbx_aromatic_flag
+chem_comp_atom.pdbx_leaving_atom_flag
+chem_comp_atom.pdbx_stereo_config
+chem_comp_atom.model_Cartn_x
+chem_comp_atom.model_Cartn_y
+chem_comp_atom.model_Cartn_z
+chem_comp_atom.pdbx_model_Cartn_x_ideal
+chem_comp_atom.pdbx_model_Cartn_y_ideal
+chem_comp_atom.pdbx_model_Cartn_z_ideal
+chem_comp_atom.pdbx_ordinal
+
+chem_comp_bond.comp_id
+chem_comp_bond.atom_id_1
+chem_comp_bond.atom_id_2
+chem_comp_bond.value_order
+chem_comp_bond.pdbx_aromatic_flag
+chem_comp_bond.pdbx_stereo_config
+chem_comp_bond.pdbx_ordinal
+
+pdbx_chem_comp_descriptor.comp_id
+pdbx_chem_comp_descriptor.type
+pdbx_chem_comp_descriptor.program
+pdbx_chem_comp_descriptor.program_version
+pdbx_chem_comp_descriptor.descriptor
+
+pdbx_chem_comp_identifier.comp_id
+pdbx_chem_comp_identifier.type
+pdbx_chem_comp_identifier.program
+pdbx_chem_comp_identifier.program_version
+pdbx_chem_comp_identifier.identifier
--- a/data/cif-field-names/cif-core-field-names.csv
+++ b/data/cif-field-names/cif-core-field-names.csv
@@ -0,0 +1,76 @@
+audit.block_doi
+
+database_code.depnum_ccdc_archive
+database_code.depnum_ccdc_fiz
+database_code.ICSD
+database_code.MDF
+database_code.NBS
+database_code.CSD
+database_code.COD
+
+chemical.name_systematic
+chemical.name_common
+chemical.melting_point
+
+chemical_formula.moiety
+chemical_formula.sum
+chemical_formula.weight
+
+atom_type.symbol
+atom_type.description
+
+atom_type_scat.dispersion_real
+atom_type_scat.dispersion_imag
+atom_type_scat.source
+
+space_group.crystal_system
+space_group.name_H-M_full
+space_group.IT_number
+space_group_symop.operation_xyz
+
+cell.length_a
+cell.length_b
+cell.length_c
+cell.angle_alpha
+cell.angle_beta
+cell.angle_gamma
+cell.volume
+cell.formula_units_Z
+
+atom_site.label
+atom_site.type_symbol
+atom_site.fract_x
+atom_site.fract_y
+atom_site.fract_z
+atom_site.U_iso_or_equiv
+atom_site.adp_type
+atom_site.occupancy
+atom_site.calc_flag
+atom_site.refinement_flags
+atom_site.disorder_assembly
+atom_site.disorder_group
+atom_site.site_symmetry_multiplicity
+
+atom_site_aniso.label
+atom_site_aniso.U
+atom_site_aniso.U_11
+atom_site_aniso.U_22
+atom_site_aniso.U_33
+atom_site_aniso.U_23
+atom_site_aniso.U_13
+atom_site_aniso.U_12
+atom_site_aniso.U_su
+atom_site_aniso.U_11_su
+atom_site_aniso.U_22_su
+atom_site_aniso.U_33_su
+atom_site_aniso.U_23_su
+atom_site_aniso.U_13_su
+atom_site_aniso.U_12_su
+
+geom_bond.atom_site_label_1
+geom_bond.atom_site_label_2
+geom_bond.distance
+geom_bond.site_symmetry_1
+geom_bond.site_symmetry_2
+geom_bond.publ_flag
+geom_bond.valence
--- a/data/cif-field-names/mmcif-field-names.csv
+++ b/data/cif-field-names/mmcif-field-names.csv
@@ -0,0 +1,805 @@
+atom_sites.entry_id
+atom_sites.fract_transf_matrix
+atom_sites.fract_transf_vector
+
+atom_site.group_PDB
+atom_site.id
+atom_site.type_symbol
+atom_site.label_atom_id
+atom_site.label_alt_id
+atom_site.label_comp_id
+atom_site.label_asym_id
+atom_site.label_entity_id
+atom_site.label_seq_id
+atom_site.pdbx_PDB_ins_code
+atom_site.pdbx_formal_charge
+atom_site.Cartn_x
+atom_site.Cartn_y
+atom_site.Cartn_z
+atom_site.occupancy
+atom_site.B_iso_or_equiv
+atom_site.auth_atom_id
+atom_site.auth_comp_id
+atom_site.auth_asym_id
+atom_site.auth_seq_id
+atom_site.pdbx_PDB_model_num
+atom_site.ihm_model_id
+
+atom_site_anisotrop.id
+atom_site_anisotrop.U
+atom_site_anisotrop.U_esd
+atom_site_anisotrop.pdbx_PDB_ins_code
+atom_site_anisotrop.pdbx_auth_asym_id
+atom_site_anisotrop.pdbx_auth_atom_id
+atom_site_anisotrop.pdbx_auth_comp_id
+atom_site_anisotrop.pdbx_auth_seq_id
+atom_site_anisotrop.pdbx_label_alt_id
+atom_site_anisotrop.pdbx_label_asym_id
+atom_site_anisotrop.pdbx_label_atom_id
+atom_site_anisotrop.pdbx_label_comp_id
+atom_site_anisotrop.pdbx_label_seq_id
+atom_site_anisotrop.type_symbol
+
+chem_comp.id
+chem_comp.type
+chem_comp.mon_nstd_flag
+chem_comp.name
+chem_comp.pdbx_synonyms
+chem_comp.formula
+chem_comp.formula_weight
+
+chem_comp_bond.comp_id
+chem_comp_bond.pdbx_stereo_config
+chem_comp_bond.pdbx_ordinal
+chem_comp_bond.pdbx_aromatic_flag
+chem_comp_bond.atom_id_1
+chem_comp_bond.atom_id_2
+chem_comp_bond.value_order
+
+pdbx_chem_comp_identifier.comp_id
+pdbx_chem_comp_identifier.type
+pdbx_chem_comp_identifier.program
+pdbx_chem_comp_identifier.program_version
+pdbx_chem_comp_identifier.identifier
+
+pdbx_chem_comp_related.comp_id
+pdbx_chem_comp_related.related_comp_id
+pdbx_chem_comp_related.relationship_type
+pdbx_chem_comp_related.details
+
+pdbx_chem_comp_synonyms.comp_id
+pdbx_chem_comp_synonyms.name
+pdbx_chem_comp_synonyms.provenance
+
+cell.entry_id
+cell.length_a
+cell.length_b
+cell.length_c
+cell.angle_alpha
+cell.angle_beta
+cell.angle_gamma
+cell.Z_PDB
+cell.pdbx_unique_axis
+
+pdbx_database_related.db_name
+pdbx_database_related.details
+pdbx_database_related.db_id
+pdbx_database_related.content_type
+
+pdbx_database_status.status_code
+pdbx_database_status.status_code_sf
+pdbx_database_status.status_code_mr
+pdbx_database_status.entry_id
+pdbx_database_status.recvd_initial_deposition_date
+pdbx_database_status.SG_entry
+pdbx_database_status.deposit_site
+pdbx_database_status.process_site
+pdbx_database_status.status_code_cs
+pdbx_database_status.methods_development_category
+pdbx_database_status.pdb_format_compatible
+
+entity.id
+entity.type
+entity.src_method
+entity.pdbx_description
+entity.formula_weight
+entity.pdbx_number_of_molecules
+entity.details
+entity.pdbx_mutation
+entity.pdbx_fragment
+entity.pdbx_ec
+
+entity_poly.entity_id
+entity_poly.type
+entity_poly.nstd_linkage
+entity_poly.nstd_monomer
+entity_poly.pdbx_seq_one_letter_code
+entity_poly.pdbx_seq_one_letter_code_can
+entity_poly.pdbx_strand_id
+entity_poly.pdbx_target_identifier
+
+entity_poly_seq.entity_id
+entity_poly_seq.num
+entity_poly_seq.mon_id
+entity_poly_seq.hetero
+
+entity_src_gen.entity_id
+entity_src_gen.pdbx_src_id
+entity_src_gen.pdbx_beg_seq_num
+entity_src_gen.pdbx_end_seq_num
+entity_src_gen.pdbx_gene_src_gene
+entity_src_gen.pdbx_gene_src_scientific_name
+entity_src_gen.plasmid_name
+
+entity_src_nat.entity_id
+entity_src_nat.pdbx_src_id
+entity_src_nat.pdbx_beg_seq_num
+entity_src_nat.pdbx_end_seq_num
+entity_src_nat.pdbx_organism_scientific
+entity_src_nat.pdbx_plasmid_name
+
+pdbx_entity_instance_feature.ordinal
+pdbx_entity_instance_feature.feature_type
+pdbx_entity_instance_feature.details
+pdbx_entity_instance_feature.asym_id
+pdbx_entity_instance_feature.comp_id
+pdbx_entity_instance_feature.seq_num
+pdbx_entity_instance_feature.auth_asym_id
+pdbx_entity_instance_feature.auth_comp_id
+pdbx_entity_instance_feature.auth_seq_num
+
+pdbx_entity_src_syn.entity_id
+pdbx_entity_src_syn.pdbx_src_id
+pdbx_entity_src_syn.pdbx_beg_seq_num
+pdbx_entity_src_syn.pdbx_end_seq_num
+pdbx_entity_src_syn.organism_scientific
+
+pdbx_entity_branch.entity_id
+pdbx_entity_branch.type
+
+pdbx_entity_branch_list.entity_id
+pdbx_entity_branch_list.comp_id
+pdbx_entity_branch_list.num
+pdbx_entity_branch_list.hetero
+
+pdbx_entity_branch_link.link_id
+pdbx_entity_branch_link.entity_id
+pdbx_entity_branch_link.entity_branch_list_num_1
+pdbx_entity_branch_link.comp_id_1
+pdbx_entity_branch_link.atom_id_1
+pdbx_entity_branch_link.leaving_atom_id_1
+pdbx_entity_branch_link.atom_stereo_config_1
+pdbx_entity_branch_link.entity_branch_list_num_2
+pdbx_entity_branch_link.comp_id_2
+pdbx_entity_branch_link.atom_id_2
+pdbx_entity_branch_link.leaving_atom_id_2
+pdbx_entity_branch_link.atom_stereo_config_2
+pdbx_entity_branch_link.value_order
+pdbx_entity_branch_link.details
+
+pdbx_branch_scheme.asym_id
+pdbx_branch_scheme.entity_id
+pdbx_branch_scheme.mon_id
+pdbx_branch_scheme.num
+pdbx_branch_scheme.auth_asym_id
+pdbx_branch_scheme.auth_mon_id
+pdbx_branch_scheme.auth_seq_num
+pdbx_branch_scheme.hetero
+pdbx_branch_scheme.pdb_mon_id
+pdbx_branch_scheme.pdb_asym_id
+pdbx_branch_scheme.pdb_seq_num
+
+pdbx_entity_branch_descriptor.ordinal
+pdbx_entity_branch_descriptor.entity_id
+pdbx_entity_branch_descriptor.descriptor
+pdbx_entity_branch_descriptor.type
+pdbx_entity_branch_descriptor.program
+pdbx_entity_branch_descriptor.program_version
+
+pdbx_entity_nonpoly.entity_id
+pdbx_entity_nonpoly.name
+pdbx_entity_nonpoly.comp_id
+
+pdbx_nonpoly_scheme.asym_id
+pdbx_nonpoly_scheme.entity_id
+pdbx_nonpoly_scheme.mon_id
+pdbx_nonpoly_scheme.ndb_seq_num
+pdbx_nonpoly_scheme.pdb_seq_num
+pdbx_nonpoly_scheme.auth_seq_num
+pdbx_nonpoly_scheme.pdb_mon_id
+pdbx_nonpoly_scheme.auth_mon_id
+pdbx_nonpoly_scheme.pdb_strand_id
+pdbx_nonpoly_scheme.pdb_ins_code
+
+entry.id
+
+audit_conform.dict_name
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+audit_conform.dict_location
+
+database_2.database_id
+database_2.database_code
+
+audit_author.name
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+audit_author.identifier_ORCID
+
+citation.id
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+citation.country
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+citation.journal_id_CSD
+citation.book_publisher
+citation.pdbx_database_id_PubMed
+citation.pdbx_database_id_DOI
+
+citation_author.citation_id
+citation_author.name
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+
+exptl.entry_id
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+
+struct.entry_id
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+
+struct_asym.id
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+struct_asym.pdbx_modified
+struct_asym.entity_id
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+
+struct_conf.conf_type_id
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+struct_conf.beg_label_comp_id
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+struct_conf.end_auth_seq_id
+struct_conf.pdbx_PDB_helix_class
+struct_conf.details
+struct_conf.pdbx_PDB_helix_length
+
+struct_conn.id
+struct_conn.conn_type_id
+struct_conn.pdbx_PDB_id
+struct_conn.ptnr1_label_asym_id
+struct_conn.ptnr1_label_comp_id
+struct_conn.ptnr1_label_seq_id
+struct_conn.ptnr1_label_atom_id
+struct_conn.pdbx_ptnr1_label_alt_id
+struct_conn.pdbx_ptnr1_PDB_ins_code
+struct_conn.pdbx_ptnr1_standard_comp_id
+struct_conn.ptnr1_symmetry
+struct_conn.ptnr2_label_asym_id
+struct_conn.ptnr2_label_comp_id
+struct_conn.ptnr2_label_seq_id
+struct_conn.ptnr2_label_atom_id
+struct_conn.pdbx_ptnr2_label_alt_id
+struct_conn.pdbx_ptnr2_PDB_ins_code
+struct_conn.ptnr1_auth_asym_id
+struct_conn.ptnr1_auth_comp_id
+struct_conn.ptnr1_auth_seq_id
+struct_conn.ptnr2_auth_asym_id
+struct_conn.ptnr2_auth_comp_id
+struct_conn.ptnr2_auth_seq_id
+struct_conn.ptnr2_symmetry
+struct_conn.pdbx_ptnr3_label_atom_id
+struct_conn.pdbx_ptnr3_label_seq_id
+struct_conn.pdbx_ptnr3_label_comp_id
+struct_conn.pdbx_ptnr3_label_asym_id
+struct_conn.pdbx_ptnr3_label_alt_id
+struct_conn.pdbx_ptnr3_PDB_ins_code
+struct_conn.details
+struct_conn.pdbx_dist_value
+struct_conn.pdbx_value_order
+
+struct_conn_type.id
+struct_conn_type.criteria
+struct_conn_type.reference
+
+struct_keywords.entry_id
+struct_keywords.pdbx_keywords
+struct_keywords.text
+
+struct_ncs_oper.id
+struct_ncs_oper.code
+struct_ncs_oper.matrix
+struct_ncs_oper.vector
+struct_ncs_oper.details
+
+struct_sheet_range.sheet_id
+struct_sheet_range.id
+struct_sheet_range.beg_label_comp_id
+struct_sheet_range.beg_label_asym_id
+struct_sheet_range.beg_label_seq_id
+struct_sheet_range.pdbx_beg_PDB_ins_code
+struct_sheet_range.end_label_comp_id
+struct_sheet_range.end_label_asym_id
+struct_sheet_range.end_label_seq_id
+struct_sheet_range.pdbx_end_PDB_ins_code
+struct_sheet_range.beg_auth_comp_id
+struct_sheet_range.beg_auth_asym_id
+struct_sheet_range.beg_auth_seq_id
+struct_sheet_range.end_auth_comp_id
+struct_sheet_range.end_auth_asym_id
+struct_sheet_range.end_auth_seq_id
+
+struct_site.id
+struct_site.pdbx_evidence_code
+struct_site.pdbx_auth_asym_id
+struct_site.pdbx_auth_comp_id
+struct_site.pdbx_auth_seq_id
+struct_site.pdbx_auth_ins_code
+struct_site.pdbx_num_residues
+struct_site.details
+
+struct_site_gen.id
+struct_site_gen.site_id
+struct_site_gen.pdbx_num_res
+struct_site_gen.label_comp_id
+struct_site_gen.label_asym_id
+struct_site_gen.label_seq_id
+struct_site_gen.pdbx_auth_ins_code
+struct_site_gen.auth_comp_id
+struct_site_gen.auth_asym_id
+struct_site_gen.auth_seq_id
+struct_site_gen.label_atom_id
+struct_site_gen.label_alt_id
+struct_site_gen.symmetry
+struct_site_gen.details
+
+symmetry.entry_id
+symmetry.cell_setting
+symmetry.Int_Tables_number
+symmetry.space_group_name_Hall
+symmetry.space_group_name_H-M
+
+pdbx_molecule.instance_id
+pdbx_molecule.prd_id
+pdbx_molecule.asym_id
+
+pdbx_molecule_features.prd_id
+pdbx_molecule_features.name
+pdbx_molecule_features.type
+pdbx_molecule_features.class
+pdbx_molecule_features.details
+
+pdbx_reference_entity_link.prd_id
+pdbx_reference_entity_link.link_id
+pdbx_reference_entity_link.link_class
+pdbx_reference_entity_link.ref_entity_id_1
+pdbx_reference_entity_link.entity_seq_num_1
+pdbx_reference_entity_link.comp_id_1
+pdbx_reference_entity_link.atom_id_1
+pdbx_reference_entity_link.ref_entity_id_2
+pdbx_reference_entity_link.entity_seq_num_2
+pdbx_reference_entity_link.comp_id_2
+pdbx_reference_entity_link.atom_id_2
+pdbx_reference_entity_link.value_order
+pdbx_reference_entity_link.component_1
+pdbx_reference_entity_link.component_2
+pdbx_reference_entity_link.details
+
+pdbx_reference_entity_list.prd_id
+pdbx_reference_entity_list.ref_entity_id
+pdbx_reference_entity_list.component_id
+pdbx_reference_entity_list.type
+pdbx_reference_entity_list.details
+
+pdbx_reference_entity_poly_link.prd_id
+pdbx_reference_entity_poly_link.ref_entity_id
+pdbx_reference_entity_poly_link.link_id
+pdbx_reference_entity_poly_link.atom_id_1
+pdbx_reference_entity_poly_link.comp_id_1
+pdbx_reference_entity_poly_link.entity_seq_num_1
+pdbx_reference_entity_poly_link.atom_id_2
+pdbx_reference_entity_poly_link.comp_id_2
+pdbx_reference_entity_poly_link.entity_seq_num_2
+pdbx_reference_entity_poly_link.value_order
+pdbx_reference_entity_poly_link.component_id
+
+pdbx_struct_assembly.id
+pdbx_struct_assembly.details
+pdbx_struct_assembly.method_details
+pdbx_struct_assembly.oligomeric_details
+pdbx_struct_assembly.oligomeric_count
+
+pdbx_struct_assembly_gen.assembly_id
+pdbx_struct_assembly_gen.oper_expression
+pdbx_struct_assembly_gen.asym_id_list
+
+pdbx_struct_oper_list.id
+pdbx_struct_oper_list.type
+pdbx_struct_oper_list.name
+pdbx_struct_oper_list.symmetry_operation
+pdbx_struct_oper_list.matrix
+pdbx_struct_oper_list.vector
+
+pdbx_struct_mod_residue.id
+pdbx_struct_mod_residue.label_asym_id
+pdbx_struct_mod_residue.label_seq_id
+pdbx_struct_mod_residue.label_comp_id
+pdbx_struct_mod_residue.auth_asym_id
+pdbx_struct_mod_residue.auth_seq_id
+pdbx_struct_mod_residue.auth_comp_id
+pdbx_struct_mod_residue.PDB_ins_code
+pdbx_struct_mod_residue.parent_comp_id
+pdbx_struct_mod_residue.details
+
+pdbx_unobs_or_zero_occ_residues.id
+pdbx_unobs_or_zero_occ_residues.PDB_model_num
+pdbx_unobs_or_zero_occ_residues.polymer_flag
+pdbx_unobs_or_zero_occ_residues.occupancy_flag
+pdbx_unobs_or_zero_occ_residues.auth_asym_id
+pdbx_unobs_or_zero_occ_residues.auth_comp_id
+pdbx_unobs_or_zero_occ_residues.auth_seq_id
+pdbx_unobs_or_zero_occ_residues.PDB_ins_code
+pdbx_unobs_or_zero_occ_residues.label_asym_id
+pdbx_unobs_or_zero_occ_residues.label_comp_id
+pdbx_unobs_or_zero_occ_residues.label_seq_id
+
+ihm_struct_assembly.id
+ihm_struct_assembly.name
+ihm_struct_assembly.description
+
+ihm_struct_assembly_details.id
+ihm_struct_assembly_details.assembly_id
+ihm_struct_assembly_details.parent_assembly_id
+ihm_struct_assembly_details.entity_description
+ihm_struct_assembly_details.entity_id
+ihm_struct_assembly_details.asym_id
+ihm_struct_assembly_details.entity_poly_segment_id
+
+ihm_model_representation.id
+ihm_model_representation.name
+ihm_model_representation.details
+
+ihm_model_representation_details.id
+ihm_model_representation_details.representation_id
+ihm_model_representation_details.entity_id
+ihm_model_representation_details.entity_description
+ihm_model_representation_details.entity_asym_id
+ihm_model_representation_details.entity_poly_segment_id
+ihm_model_representation_details.model_object_primitive
+ihm_model_representation_details.starting_model_id
+ihm_model_representation_details.model_mode
+ihm_model_representation_details.model_granularity
+ihm_model_representation_details.model_object_count
+
+ihm_external_reference_info.reference_id
+ihm_external_reference_info.reference_provider
+ihm_external_reference_info.reference_type
+ihm_external_reference_info.reference
+ihm_external_reference_info.refers_to
+ihm_external_reference_info.associated_url
+
+ihm_external_files.id
+ihm_external_files.reference_id
+ihm_external_files.file_path
+ihm_external_files.content_type
+ihm_external_files.file_size_bytes
+ihm_external_files.details
+
+ihm_dataset_list.id
+ihm_dataset_list.data_type
+ihm_dataset_list.database_hosted
+
+ihm_dataset_group.id
+ihm_dataset_group.name
+ihm_dataset_group.application
+ihm_dataset_group.details
+
+ihm_dataset_group_link.group_id
+ihm_dataset_group_link.dataset_list_id
+
+ihm_dataset_external_reference.id
+ihm_dataset_external_reference.dataset_list_id
+ihm_dataset_external_reference.file_id
+
+ihm_dataset_related_db_reference.id
+ihm_dataset_related_db_reference.dataset_list_id
+ihm_dataset_related_db_reference.db_name
+ihm_dataset_related_db_reference.accession_code
+ihm_dataset_related_db_reference.version
+ihm_dataset_related_db_reference.details
+
+ihm_related_datasets.dataset_list_id_derived
+ihm_related_datasets.dataset_list_id_primary
+
+ihm_poly_residue_feature.ordinal_id
+ihm_poly_residue_feature.feature_id
+ihm_poly_residue_feature.entity_id
+ihm_poly_residue_feature.asym_id
+ihm_poly_residue_feature.seq_id_begin
+ihm_poly_residue_feature.comp_id_begin
+ihm_poly_residue_feature.seq_id_end
+ihm_poly_residue_feature.comp_id_end
+
+ihm_feature_list.feature_id
+ihm_feature_list.feature_type
+ihm_feature_list.entity_type
+
+ihm_cross_link_list.id
+ihm_cross_link_list.group_id
+ihm_cross_link_list.entity_description_1
+ihm_cross_link_list.entity_id_1
+ihm_cross_link_list.seq_id_1
+ihm_cross_link_list.comp_id_1
+ihm_cross_link_list.entity_description_2
+ihm_cross_link_list.entity_id_2
+ihm_cross_link_list.seq_id_2
+ihm_cross_link_list.comp_id_2
+ihm_cross_link_list.linker_type
+ihm_cross_link_list.dataset_list_id
+
+ihm_cross_link_restraint.id
+ihm_cross_link_restraint.group_id
+ihm_cross_link_restraint.entity_id_1
+ihm_cross_link_restraint.asym_id_1
+ihm_cross_link_restraint.seq_id_1
+ihm_cross_link_restraint.atom_id_1
+ihm_cross_link_restraint.comp_id_1
+ihm_cross_link_restraint.entity_id_2
+ihm_cross_link_restraint.asym_id_2
+ihm_cross_link_restraint.seq_id_2
+ihm_cross_link_restraint.atom_id_2
+ihm_cross_link_restraint.comp_id_2
+ihm_cross_link_restraint.restraint_type
+ihm_cross_link_restraint.conditional_crosslink_flag
+ihm_cross_link_restraint.model_granularity
+ihm_cross_link_restraint.distance_threshold
+ihm_cross_link_restraint.psi
+ihm_cross_link_restraint.sigma_1
+ihm_cross_link_restraint.sigma_2
+
+ihm_cross_link_result_parameters.id
+ihm_cross_link_result_parameters.restraint_id
+ihm_cross_link_result_parameters.model_id
+ihm_cross_link_result_parameters.psi
+ihm_cross_link_result_parameters.sigma_1
+ihm_cross_link_result_parameters.sigma_2
+
+ihm_sas_restraint.id
+ihm_sas_restraint.dataset_list_id
+ihm_sas_restraint.model_id
+ihm_sas_restraint.struct_assembly_id
+ihm_sas_restraint.profile_segment_flag
+ihm_sas_restraint.fitting_atom_type
+ihm_sas_restraint.fitting_method
+ihm_sas_restraint.fitting_state
+ihm_sas_restraint.radius_of_gyration
+ihm_sas_restraint.chi_value
+ihm_sas_restraint.details
+
+ihm_derived_distance_restraint.id
+ihm_derived_distance_restraint.group_id
+ihm_derived_distance_restraint.feature_id_1
+ihm_derived_distance_restraint.feature_id_2
+ihm_derived_distance_restraint.group_conditionality
+ihm_derived_distance_restraint.restraint_type
+ihm_derived_distance_restraint.distance_upper_limit
+ihm_derived_distance_restraint.random_exclusion_fraction
+ihm_derived_distance_restraint.dataset_list_id
+
+ihm_2dem_class_average_restraint.id
+ihm_2dem_class_average_restraint.dataset_list_id
+ihm_2dem_class_average_restraint.number_raw_micrographs
+ihm_2dem_class_average_restraint.pixel_size_width
+ihm_2dem_class_average_restraint.pixel_size_height
+ihm_2dem_class_average_restraint.image_resolution
+ihm_2dem_class_average_restraint.image_segment_flag
+ihm_2dem_class_average_restraint.number_of_projections
+ihm_2dem_class_average_restraint.struct_assembly_id
+ihm_2dem_class_average_restraint.details
+
+ihm_2dem_class_average_fitting.id
+ihm_2dem_class_average_fitting.restraint_id
+ihm_2dem_class_average_fitting.model_id
+ihm_2dem_class_average_fitting.cross_correlation_coefficient
+ihm_2dem_class_average_fitting.rot_matrix
+ihm_2dem_class_average_fitting.tr_vector
+
+ihm_3dem_restraint.id
+ihm_3dem_restraint.dataset_list_id
+ihm_3dem_restraint.fitting_method
+ihm_3dem_restraint.struct_assembly_id
+ihm_3dem_restraint.number_of_gaussians
+ihm_3dem_restraint.model_id
+ihm_3dem_restraint.cross_correlation_coefficient
+
+ihm_predicted_contact_restraint.id
+ihm_predicted_contact_restraint.group_id
+ihm_predicted_contact_restraint.entity_id_1
+ihm_predicted_contact_restraint.asym_id_1
+ihm_predicted_contact_restraint.seq_id_1
+ihm_predicted_contact_restraint.comp_id_1
+ihm_predicted_contact_restraint.rep_atom_1
+ihm_predicted_contact_restraint.entity_id_2
+ihm_predicted_contact_restraint.asym_id_2
+ihm_predicted_contact_restraint.seq_id_2
+ihm_predicted_contact_restraint.comp_id_2
+ihm_predicted_contact_restraint.rep_atom_2
+ihm_predicted_contact_restraint.restraint_type
+ihm_predicted_contact_restraint.distance_lower_limit
+ihm_predicted_contact_restraint.distance_upper_limit
+ihm_predicted_contact_restraint.probability
+ihm_predicted_contact_restraint.model_granularity
+ihm_predicted_contact_restraint.dataset_list_id
+ihm_predicted_contact_restraint.software_id
+
+ihm_starting_model_details.starting_model_id
+ihm_starting_model_details.entity_id
+ihm_starting_model_details.entity_description
+ihm_starting_model_details.asym_id
+ihm_starting_model_details.entity_poly_segment_id
+ihm_starting_model_details.starting_model_source
+ihm_starting_model_details.starting_model_auth_asym_id
+ihm_starting_model_details.starting_model_sequence_offset
+ihm_starting_model_details.dataset_list_id
+
+ihm_starting_comparative_models.id
+ihm_starting_comparative_models.starting_model_id
+ihm_starting_comparative_models.starting_model_auth_asym_id
+ihm_starting_comparative_models.starting_model_seq_id_begin
+ihm_starting_comparative_models.starting_model_seq_id_end
+ihm_starting_comparative_models.template_auth_asym_id
+ihm_starting_comparative_models.template_seq_id_begin
+ihm_starting_comparative_models.template_seq_id_end
+ihm_starting_comparative_models.template_sequence_identity
+ihm_starting_comparative_models.template_sequence_identity_denominator
+ihm_starting_comparative_models.template_dataset_list_id
+ihm_starting_comparative_models.alignment_file_id
+
+ihm_starting_model_coord.starting_model_id
+ihm_starting_model_coord.group_PDB
+ihm_starting_model_coord.id
+ihm_starting_model_coord.type_symbol
+ihm_starting_model_coord.atom_id
+ihm_starting_model_coord.comp_id
+ihm_starting_model_coord.entity_id
+ihm_starting_model_coord.asym_id
+ihm_starting_model_coord.seq_id
+ihm_starting_model_coord.Cartn_x
+ihm_starting_model_coord.Cartn_y
+ihm_starting_model_coord.Cartn_z
+ihm_starting_model_coord.B_iso_or_equiv
+ihm_starting_model_coord.ordinal_id
+
+ihm_starting_model_seq_dif.id
+ihm_starting_model_seq_dif.entity_id
+ihm_starting_model_seq_dif.asym_id
+ihm_starting_model_seq_dif.seq_id
+ihm_starting_model_seq_dif.comp_id
+ihm_starting_model_seq_dif.starting_model_id
+ihm_starting_model_seq_dif.db_asym_id
+ihm_starting_model_seq_dif.db_seq_id
+ihm_starting_model_seq_dif.db_comp_id
+ihm_starting_model_seq_dif.details
+
+ihm_modeling_protocol.id
+ihm_modeling_protocol.protocol_name
+ihm_modeling_protocol.num_steps
+
+ihm_modeling_protocol_details.id
+ihm_modeling_protocol_details.protocol_id
+ihm_modeling_protocol_details.step_id
+ihm_modeling_protocol_details.struct_assembly_id
+ihm_modeling_protocol_details.dataset_group_id
+ihm_modeling_protocol_details.struct_assembly_description
+ihm_modeling_protocol_details.step_name
+ihm_modeling_protocol_details.step_method
+ihm_modeling_protocol_details.num_models_begin
+ihm_modeling_protocol_details.num_models_end
+ihm_modeling_protocol_details.multi_scale_flag
+ihm_modeling_protocol_details.multi_state_flag
+ihm_modeling_protocol_details.ordered_flag
+ihm_modeling_protocol_details.software_id
+ihm_modeling_protocol_details.script_file_id
+
+ihm_modeling_post_process.id
+ihm_modeling_post_process.protocol_id
+ihm_modeling_post_process.analysis_id
+ihm_modeling_post_process.step_id
+ihm_modeling_post_process.type
+ihm_modeling_post_process.feature
+ihm_modeling_post_process.num_models_begin
+ihm_modeling_post_process.num_models_end
+
+ihm_ensemble_info.ensemble_id
+ihm_ensemble_info.ensemble_name
+ihm_ensemble_info.post_process_id
+ihm_ensemble_info.model_group_id
+ihm_ensemble_info.ensemble_clustering_method
+ihm_ensemble_info.ensemble_clustering_feature
+ihm_ensemble_info.num_ensemble_models
+ihm_ensemble_info.num_ensemble_models_deposited
+ihm_ensemble_info.ensemble_precision_value
+ihm_ensemble_info.ensemble_file_id
+
+ihm_localization_density_files.id
+ihm_localization_density_files.file_id
+ihm_localization_density_files.ensemble_id
+ihm_localization_density_files.entity_id
+ihm_localization_density_files.asym_id
+ihm_localization_density_files.entity_poly_segment_id
+
+ihm_model_list.model_id
+ihm_model_list.model_name
+ihm_model_list.assembly_id
+ihm_model_list.protocol_id
+ihm_model_list.representation_id
+
+ihm_model_group.id
+ihm_model_group.name
+ihm_model_group.details
+
+ihm_model_group_link.group_id
+ihm_model_group_link.model_id
+
+ihm_model_representative.id
+ihm_model_representative.model_group_id
+ihm_model_representative.model_id
+ihm_model_representative.selection_criteria
+
+ihm_sphere_obj_site.id
+ihm_sphere_obj_site.entity_id
+ihm_sphere_obj_site.seq_id_begin
+ihm_sphere_obj_site.seq_id_end
+ihm_sphere_obj_site.asym_id
+ihm_sphere_obj_site.Cartn_x
+ihm_sphere_obj_site.Cartn_y
+ihm_sphere_obj_site.Cartn_z
+ihm_sphere_obj_site.object_radius
+ihm_sphere_obj_site.rmsf
+ihm_sphere_obj_site.model_id
+
+ihm_gaussian_obj_site.id
+ihm_gaussian_obj_site.entity_id
+ihm_gaussian_obj_site.seq_id_begin
+ihm_gaussian_obj_site.seq_id_end
+ihm_gaussian_obj_site.asym_id
+ihm_gaussian_obj_site.mean_Cartn_x
+ihm_gaussian_obj_site.mean_Cartn_y
+ihm_gaussian_obj_site.mean_Cartn_z
+ihm_gaussian_obj_site.weight
+ihm_gaussian_obj_site.covariance_matrix
+ihm_gaussian_obj_site.model_id
+
+ihm_gaussian_obj_ensemble.id
+ihm_gaussian_obj_ensemble.entity_id
+ihm_gaussian_obj_ensemble.seq_id_begin
+ihm_gaussian_obj_ensemble.seq_id_end
+ihm_gaussian_obj_ensemble.asym_id
+ihm_gaussian_obj_ensemble.mean_Cartn_x
+ihm_gaussian_obj_ensemble.mean_Cartn_y
+ihm_gaussian_obj_ensemble.mean_Cartn_z
+ihm_gaussian_obj_ensemble.weight
+ihm_gaussian_obj_ensemble.covariance_matrix
+ihm_gaussian_obj_ensemble.ensemble_id
+
+ihm_multi_state_modeling.state_id
+ihm_multi_state_modeling.state_group_id
+ihm_multi_state_modeling.population_fraction
+ihm_multi_state_modeling.population_fraction_sd
+ihm_multi_state_modeling.state_type
+ihm_multi_state_modeling.state_name
+ihm_multi_state_modeling.experiment_type
+ihm_multi_state_modeling.details
--- a/data/cif-field-names/mmtf-filter.csv
+++ b/data/cif-field-names/mmtf-filter.csv
@@ -0,0 +1,76 @@
+cell.length_a
+cell.length_b
+cell.length_c
+cell.angle_alpha
+cell.angle_beta
+cell.angle_gamma
+
+symmetry.space_group_name_H-M
+
+entry.id
+
+struct.title
+
+pdbx_database_status.recvd_initial_deposition_date
+
+pdbx_audit_revision_history.revision_date
+
+struct_ncs_oper
+
+pdbx_struct_assembly_gen
+
+pdbx_struct_oper_list
+
+entity.id
+entity.type
+entity.pdbx_description
+
+entity_poly.entity_id
+entity_poly.pdbx_seq_one_letter_code
+entity_poly.pdbx_strand_id
+
+exptl.method
+
+refine.ls_d_res_low
+refine.ls_R_factor_R_free
+refine.ls_R_factor_R_work
+
+atom_site.pdbx_formal_charge
+atom_site.label_atom_id
+atom_site.type_symbol
+
+chem_comp.id
+chem_comp.type
+chem_comp.name
+
+chem_comp_bond
+
+atom_site.Cartn_x
+atom_site.Cartn_y
+atom_site.Cartn_z
+atom_site.B_iso_or_equiv
+atom_site.id
+atom_site.label_alt_id
+atom_site.occupancy
+atom_site.label_seq_id
+atom_site.label_comp_id
+
+struct_sheet_range.id
+struct_sheet_range.beg_label_asym_id
+struct_sheet_range.beg_label_seq_id
+struct_sheet_range.pdbx_beg_PDB_ins_code
+struct_sheet_range.end_label_asym_id
+struct_sheet_range.end_label_seq_id
+struct_sheet_range.pdbx_end_PDB_ins_code
+struct_conf.conf_type_id
+struct_conf.id
+struct_conf.beg_label_asym_id
+struct_conf.beg_label_seq_id
+struct_conf.pdbx_beg_PDB_ins_code
+struct_conf.end_label_asym_id
+struct_conf.end_label_seq_id
+struct_conf.pdbx_end_PDB_ins_code
+
+atom_site.pdbx_PDB_ins_code
+atom_site.label_asym_id
+atom_site.auth_asym_id
--- a/docs/interesting-pdb-entries.md
+++ b/docs/interesting-pdb-entries.md
@@ -0,0 +1,28 @@
+* Cyclic polymers (1sfi, 6dny, 1HVZ)
+* B-DNA (1bna)
+* Missing carbonyl oxygen (1gfl)
+* Mono-saccharides with alt locs (1B5F)
+* Microheterogeneity
+    * Protein (1EJG, 3NIR)
+    * DNA (3VOK)
+* PNA: peptide nucleic acid (5eme, 1xj9)
+* Peptide derived residues
+    * GFP chromophores (5Z6Y)
+* Nucleotides that don’t have a parent base set, i.e. detect purine/pyrimidine from geometry (THX in 1AUL, OMC in e.g. 5D3G)
+* Bases with modified ring atoms
+    * DZ has C1 instead of N1 (e.g. 6I4N)
+    * DP has N5 instead of C5 and C7 instead of N7 (e.g. 6I4N)
+* Beta & Gamma peptides (e.g. 1GAC, 6PQF)
+* Mixed (heterogeneous) all-atom/trace-only RNA model (1JGQ)
+* Polymers with residues with missing trace atoms (e.g. 2QFJ)
+* Modified RNA bases (1y26, 5L4O)
+* Discontinuous chains, i.e. gaps in the sequence (3sn6)
+* Lots of sheets (1cbs)
+* DNA (2np2, 1d66)
+* C-alpha only (2rcj)
+* Not cyclic, but termini are backbone-only and within distance but seqIds are not compatible (6SW3)
+* Close backbone atoms but not linked (e.g. 4HIV)
+* Non-standard residues
+    * Protein (1BRR, 5Z6Y)
+    * DNA (5D3G)
+* Multiple models with different sets of ligands or missing ligands (1J6T, 1VRC, 2ICY, 1O2F)
--- a/docs/model-server/readme.md
+++ b/docs/model-server/readme.md
@@ -24,7 +24,7 @@ npm run build-tsc
 and run the server by 

 ```
-node lib/servers/model/server/server
+node lib/commonjs/servers/model/server/server
 ```

 ## From NPM
@@ -54,12 +54,12 @@ Sometimes nodejs might run into problems with memory. This is usually resolved b

 ## Preprocessor

-The preprocessor application allows to add custom data to CIF files and/or convert CIF to BinaryCIF. ``node lib/servers/model/preprocess`` or ``model-server-preprocess`` binary from the NPM package.
+The preprocessor application allows to add custom data to CIF files and/or convert CIF to BinaryCIF. ``node lib/commonjs/servers/model/preprocess`` or ``model-server-preprocess`` binary from the NPM package.


 ## Local Mode

-The server can be run in local/file based mode using ``node lib/servers/model/query`` (``model-server-query`` binary from the NPM package).
+The server can be run in local/file based mode using ``node lib/commonjs/servers/model/query`` (``model-server-query`` binary from the NPM package).

 Custom Properties
 =================
--- a/docs/volume-server/README.md
+++ b/docs/volume-server/README.md
@@ -28,7 +28,7 @@ npm run build-tsc
 and run the server by 

 ```
-node lib/servers/volume/server
+node lib/commonjs/servers/volume/server
 ```

 ## From NPM
@@ -60,11 +60,11 @@ Sometimes nodejs might run into problems with memory. This is usually resolved b
 ## Preparing the Data

 For the server to work, CCP4/MAP (models 0, 1, 2 are supported) input data need to be converted into a custom block format. 
-To achieve this, use the ``pack`` application (``node lib/servers/volume/pack`` or ``volume-server-pack`` binary from the NPM package).
+To achieve this, use the ``pack`` application (``node lib/commonjs/servers/volume/pack`` or ``volume-server-pack`` binary from the NPM package).

 ## Local Mode

-The program  ``lib/servers/volume/pack`` (``volume-server-query`` in NPM package) can be used to query the data without running a http server.
+The program  ``lib/commonjs/servers/volume/pack`` (``volume-server-query`` in NPM package) can be used to query the data without running a http server.

 ## Navigating the Source Code

--- a/package-lock.json
+++ b/package-lock.json
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
  "name": "molstar",
-  "version": "0.6.2",
+  "version": "2.0.0-dev.3",
  "description": "A comprehensive macromolecular library.",
  "homepage": "https://github.com/molstar/molstar#readme",
  "repository": {
@@ -11,39 +11,46 @@
    "url": "https://github.com/molstar/molstar/issues"
  },
  "scripts": {
-    "lint": "eslint src/**/*.ts",
+    "lint": "eslint .",
+    "lint-fix": "eslint . --fix",
    "test": "npm run lint && jest",
    "build": "npm run build-tsc && npm run build-extra && npm run build-webpack",
-    "build-tsc": "tsc --incremental",
-    "build-extra": "cpx \"src/**/*.{scss,woff,woff2,ttf,otf,eot,svg,html,ico}\" lib/",
-    "build-webpack": "webpack --mode production",
-    "watch": "concurrently -c \"green,gray,gray\" --names \"tsc,ext,wpc\" --kill-others \"npm:watch-tsc\" \"npm:watch-extra\" \"npm:watch-webpack\"",
+    "build-viewer": "npm run build-tsc && npm run build-extra && npm run build-webpack-viewer",
+    "build-tsc": "concurrently \"tsc --incremental\" \"tsc --build tsconfig.commonjs.json --incremental\"",
+    "build-extra": "cpx \"src/**/*.{scss,html,ico}\" lib/",
+    "build-webpack": "webpack --mode production --config ./webpack.config.production.js",
+    "build-webpack-viewer": "webpack --mode production --config ./webpack.config.viewer.js",
+    "watch": "concurrently -c \"green,green,gray,gray\" --names \"tsc,srv,ext,wpc\" --kill-others \"npm:watch-tsc\" \"npm:watch-servers\" \"npm:watch-extra\" \"npm:watch-webpack\"",
    "watch-viewer": "concurrently -c \"green,gray,gray\" --names \"tsc,ext,wpc\" --kill-others \"npm:watch-tsc\" \"npm:watch-extra\" \"npm:watch-webpack-viewer\"",
    "watch-viewer-debug": "concurrently -c \"green,gray,gray\" --names \"tsc,ext,wpc\" --kill-others \"npm:watch-tsc\" \"npm:watch-extra\" \"npm:watch-webpack-viewer-debug\"",
    "watch-tsc": "tsc --watch --incremental",
-    "watch-extra": "cpx \"src/**/*.{scss,woff,woff2,ttf,otf,eot,svg,html,ico}\" lib/ --watch",
+    "watch-servers": "tsc --build tsconfig.commonjs.json --watch --incremental",
+    "watch-extra": "cpx \"src/**/*.{scss,html,ico}\" lib/ --watch",
    "watch-webpack": "webpack -w --mode development --display minimal",
    "watch-webpack-viewer": "webpack -w --mode development --display errors-only --info-verbosity verbose --config ./webpack.config.viewer.js",
    "watch-webpack-viewer-debug": "webpack -w --mode development --display errors-only --info-verbosity verbose --config ./webpack.config.viewer.debug.js",
-    "serve": "http-server -p 1338",
-    "model-server": "node lib/servers/model/server.js",
-    "model-server-watch": "nodemon --watch lib lib/servers/model/server.js",
-    "volume-server-test": "node lib/servers/volume/server.js --idMap em 'test/${id}.mdb' --defaultPort 1336",
-    "plugin-state": "node lib/servers/plugin-state/index.js",
+    "serve": "http-server -p 1338 -g",
+    "model-server": "node lib/commonjs/servers/model/server.js",
+    "model-server-watch": "nodemon --watch lib lib/commonjs/servers/model/server.js",
+    "volume-server-test": "node lib/commonjs/servers/volume/server.js --idMap em 'test/${id}.mdb' --defaultPort 1336",
+    "plugin-state": "node lib/commonjs/servers/plugin-state/index.js --working-folder ./build/state --port 1339",
    "preversion": "npm run test",
-    "postversion": "git push && git push --tags",
-    "prepublishOnly": "npm run test && npm run build"
+    "version": "npm run build",
+    "postversion": "git push && git push --tags"
  },
  "files": [
-    "lib/"
+    "lib/",
+    "build/viewer/"
  ],
  "bin": {
-    "model-server": "lib/servers/model/server.js",
-    "model-server-query": "lib/servers/model/local.js",
-    "model-server-preprocess": "lib/servers/model/preprocess.js",
-    "volume-server": "lib/servers/volume/server.js",
-    "volume-server-query": "lib/servers/volume/query.js",
-    "volume-server-pack": "lib/servers/volume/pack.js"
+    "cif2bcif": "lib/commonjs/cli/cif2bcif/index.js",
+    "cifschema": "lib/commonjs/cli/cifschema/index.js",
+    "model-server": "lib/commonjs/servers/model/server.js",
+    "model-server-query": "lib/commonjs/servers/model/query.js",
+    "model-server-preprocess": "lib/commonjs/servers/model/preprocess.js",
+    "volume-server": "lib/commonjs/servers/volume/server.js",
+    "volume-server-query": "lib/commonjs/servers/volume/query.js",
+    "volume-server-pack": "lib/commonjs/servers/volume/pack.js"
  },
  "nodemonConfig": {
    "ignoreRoot": [
@@ -72,70 +79,72 @@
  "contributors": [
    "Alexander Rose <alexander.rose@weirdbyte.de>",
    "David Sehnal <david.sehnal@gmail.com>",
-    "Sebastian Bittrich <sebastian.bittrich@rcsb.org>"
+    "Sebastian Bittrich <sebastian.bittrich@rcsb.org>",
+    "Áron Samuel Kovács <aron.kovacs@mail.muni.cz>",
+    "Ludovic Autin <autin@scripps.edu>",
+    "Michal Malý <michal.maly@ibt.cas.cz>",
+    "Jiří Černý <jiri.cerny@ibt.cas.cz>"
  ],
  "license": "MIT",
  "devDependencies": {
-    "@graphql-codegen/add": "^1.13.1",
-    "@graphql-codegen/cli": "^1.13.1",
-    "@graphql-codegen/time": "^1.13.1",
-    "@graphql-codegen/typescript": "^1.13.1",
-    "@graphql-codegen/typescript-graphql-files-modules": "^1.13.1",
-    "@graphql-codegen/typescript-graphql-request": "^1.13.1",
-    "@graphql-codegen/typescript-operations": "^1.13.1",
-    "@types/cors": "^2.8.6",
-    "@typescript-eslint/eslint-plugin": "^2.26.0",
-    "@typescript-eslint/parser": "^2.26.0",
+    "@graphql-codegen/add": "^2.0.2",
+    "@graphql-codegen/cli": "^1.19.4",
+    "@graphql-codegen/time": "^2.0.2",
+    "@graphql-codegen/typescript": "^1.19.0",
+    "@graphql-codegen/typescript-graphql-files-modules": "^1.18.1",
+    "@graphql-codegen/typescript-graphql-request": "^2.0.3",
+    "@graphql-codegen/typescript-operations": "^1.17.12",
+    "@types/cors": "^2.8.8",
+    "@typescript-eslint/eslint-plugin": "^4.9.1",
+    "@typescript-eslint/parser": "^4.9.1",
    "benchmark": "^2.1.4",
-    "circular-dependency-plugin": "^5.2.0",
-    "concurrently": "^5.1.0",
-    "cpx2": "^2.0.0",
-    "css-loader": "^3.4.2",
-    "eslint": "^6.8.0",
+    "concurrently": "^5.3.0",
+    "cpx2": "^3.0.0",
+    "css-loader": "^5.0.1",
+    "eslint": "^7.15.0",
    "extra-watch-webpack-plugin": "^1.0.3",
-    "file-loader": "^6.0.0",
-    "fs-extra": "^9.0.0",
-    "http-server": "^0.12.1",
-    "jest": "^25.2.7",
-    "jest-raw-loader": "^1.0.1",
-    "mini-css-extract-plugin": "^0.9.0",
-    "node-sass": "^4.13.1",
-    "pascal-case": "^3.1.1",
-    "raw-loader": "^4.0.0",
-    "resolve-url-loader": "^3.1.1",
-    "sass-loader": "^8.0.2",
-    "simple-git": "^1.132.0",
-    "style-loader": "^1.1.3",
-    "ts-jest": "^25.3.1",
-    "typescript": "^3.8.3",
-    "webpack": "^4.42.1",
-    "webpack-cli": "^3.3.11"
+    "file-loader": "^6.2.0",
+    "fs-extra": "^9.0.1",
+    "graphql": "^15.4.0",
+    "http-server": "^0.12.3",
+    "jest": "^26.6.3",
+    "mini-css-extract-plugin": "^1.3.2",
+    "node-sass": "^5.0.0",
+    "raw-loader": "^4.0.2",
+    "sass-loader": "^10.1.0",
+    "simple-git": "^2.25.0",
+    "style-loader": "^2.0.0",
+    "ts-jest": "^26.4.4",
+    "typescript": "^4.1.2",
+    "webpack": "^4.44.1",
+    "webpack-cli": "^3.3.12",
+    "webpack-version-file-plugin": "^0.4.0"
  },
  "dependencies": {
    "@types/argparse": "^1.0.38",
-    "@types/benchmark": "^1.0.31",
+    "@types/benchmark": "^2.1.0",
    "@types/compression": "1.7.0",
-    "@types/express": "^4.17.4",
-    "@types/jest": "^25.2.1",
-    "@types/node": "^13.11.0",
-    "@types/node-fetch": "^2.5.5",
-    "@types/react": "^16.9.32",
-    "@types/react-dom": "^16.9.6",
-    "@types/swagger-ui-dist": "3.0.5",
+    "@types/express": "^4.17.9",
+    "@types/jest": "^26.0.18",
+    "@types/node": "^14.14.11",
+    "@types/node-fetch": "^2.5.7",
+    "@types/react": "^17.0.0",
+    "@types/react-dom": "^17.0.0",
+    "@types/swagger-ui-dist": "3.30.0",
    "argparse": "^1.0.10",
    "body-parser": "^1.19.0",
    "compression": "^1.7.4",
    "cors": "^2.8.5",
    "express": "^4.17.1",
-    "graphql": "^14.6.0",
-    "immer": "^6.0.3",
+    "h264-mp4-encoder": "^1.0.12",
+    "immer": "^8.0.0",
    "immutable": "^3.8.2",
-    "node-fetch": "^2.6.0",
-    "react": "^16.13.1",
-    "react-dom": "^16.13.1",
-    "rxjs": "^6.5.5",
-    "swagger-ui-dist": "^3.25.0",
-    "tslib": "^1.11.1",
+    "node-fetch": "^2.6.1",
+    "react": "^17.0.1",
+    "react-dom": "^17.0.1",
+    "rxjs": "^6.6.3",
+    "swagger-ui-dist": "^3.37.2",
+    "tslib": "^2.0.3",
    "util.promisify": "^1.0.1",
    "xhr2": "^0.2.0"
  }
--- a/scripts/deploy.js
+++ b/scripts/deploy.js
@@ -4,40 +4,40 @@
 * @author Alexander Rose <alexander.rose@weirdbyte.de>
 */

-const git = require('simple-git')
-const path = require('path')
-const fs = require("fs")
-const fse = require("fs-extra")
+const git = require('simple-git');
+const path = require('path');
+const fs = require("fs");
+const fse = require("fs-extra");

-const remoteUrl = "https://github.com/molstar/molstar.github.io.git"
-const buildDir = path.resolve(__dirname, '../build/')
-const deployDir = path.resolve(buildDir, 'deploy/')
-const localPath = path.resolve(deployDir, 'molstar.github.io/')
+const remoteUrl = "https://github.com/molstar/molstar.github.io.git";
+const buildDir = path.resolve(__dirname, '../build/');
+const deployDir = path.resolve(buildDir, 'deploy/');
+const localPath = path.resolve(deployDir, 'molstar.github.io/');

 function log(command, stdout, stderr) {
    if (command) {
-        console.log('\n###', command)
-        stdout.pipe(process.stdout)
-        stderr.pipe(process.stderr)
+        console.log('\n###', command);
+        stdout.pipe(process.stdout);
+        stderr.pipe(process.stderr);
    }
 }

 function copyViewer() {
-    console.log('\n###', 'copy viewer files')
-    const viewerBuildPath = path.resolve(buildDir, '../build/viewer/')
-    const viewerDeployPath = path.resolve(localPath, 'viewer/')
-    fse.copySync(viewerBuildPath, viewerDeployPath, { overwrite: true })
+    console.log('\n###', 'copy viewer files');
+    const viewerBuildPath = path.resolve(buildDir, '../build/viewer/');
+    const viewerDeployPath = path.resolve(localPath, 'viewer/');
+    fse.copySync(viewerBuildPath, viewerDeployPath, { overwrite: true });
 }

 if (!fs.existsSync(localPath)) {
-    console.log('\n###', 'create localPath')
-    fs.mkdirSync(localPath, { recursive: true })
+    console.log('\n###', 'create localPath');
+    fs.mkdirSync(localPath, { recursive: true });
 }

 process.chdir(localPath);

 if (!fs.existsSync(path.resolve(localPath, '.git/'))) {
-    console.log('\n###', 'clone repository')
+    console.log('\n###', 'clone repository');
    git()
        .outputHandler(log)
        .clone(remoteUrl, localPath)
@@ -45,9 +45,9 @@ if (!fs.existsSync(path.resolve(localPath, '.git/'))) {
        .exec(copyViewer)
        .add(['-A'])
        .commit('updated viewer')
-        .push()
+        .push();
 } else {
-    console.log('\n###', 'update repository')
+    console.log('\n###', 'update repository');
    git()
        .outputHandler(log)
        .fetch(['--all'])
@@ -55,5 +55,5 @@ if (!fs.existsSync(path.resolve(localPath, '.git/'))) {
        .exec(copyViewer)
        .add(['-A'])
        .commit('updated viewer')
-        .push()
+        .push();
 }
--- a/src/apps/basic-wrapper/controls.tsx
+++ b/src/apps/basic-wrapper/controls.tsx
@@ -1,30 +0,0 @@
-/**
- * Copyright (c) 2019 mol* contributors, licensed under MIT, See LICENSE file for more info.
- *
- * @author David Sehnal <david.sehnal@gmail.com>
- */
-
-import { PluginUIComponent } from '../../mol-plugin-ui/base';
-import * as React from 'react';
-import { TransformUpdaterControl } from '../../mol-plugin-ui/state/update-transform';
-
-export class BasicWrapperControls extends PluginUIComponent {
-
-    render() {
-        return <div style={{ overflowY: 'auto', display: 'block', height: '100%' }}>
-            <TransformUpdaterControl nodeRef='asm' />
-            <TransformUpdaterControl nodeRef='seq-visual' header={{ name: 'Sequence Visual' }} />
-            <TransformUpdaterControl nodeRef='het-visual' header={{ name: 'HET Visual' }} />
-            <TransformUpdaterControl nodeRef='water-visual' header={{ name: 'Water Visual' }} initiallyCollapsed={true} />
-            <TransformUpdaterControl nodeRef='ihm-visual' header={{ name: 'I/HM Visual' }} initiallyCollapsed={true} />
-        </div>;
-    }
-}
-
-export class CustomToastMessage extends PluginUIComponent {
-    render() {
-        return <>
-            Custom <i>Toast</i> content. No timeout.
-        </>;
-    }
-}
--- a/src/apps/basic-wrapper/helpers.ts
+++ b/src/apps/basic-wrapper/helpers.ts
@@ -1,99 +0,0 @@
-/**
- * Copyright (c) 2019 mol* contributors, licensed under MIT, See LICENSE file for more info.
- *
- * @author David Sehnal <david.sehnal@gmail.com>
- */
-
-import { Mat4, Vec3 } from '../../mol-math/linear-algebra';
-import { PluginContext } from '../../mol-plugin/context';
-import { PluginStateObject as PSO } from '../../mol-plugin-state/objects';
-import { StateTransforms } from '../../mol-plugin-state/transforms';
-import { MolScriptBuilder as MS } from '../../mol-script/language/builder';
-import { StateBuilder } from '../../mol-state';
-import Expression from '../../mol-script/language/expression';
-import { ColorTheme } from '../../mol-theme/color';
-import { createStructureRepresentationParams } from '../../mol-plugin-state/helpers/structure-representation-params';
-type SupportedFormats = 'cif' | 'pdb'
-
-export namespace StateHelper {
-    export function download(b: StateBuilder.To<PSO.Root>, url: string, ref?: string) {
-        return b.apply(StateTransforms.Data.Download, { url, isBinary: false }, { ref });
-    }
-
-    export function getModel(b: StateBuilder.To<PSO.Data.Binary | PSO.Data.String>, format: SupportedFormats, modelIndex = 0) {
-        const parsed = format === 'cif'
-            ? b.apply(StateTransforms.Data.ParseCif).apply(StateTransforms.Model.TrajectoryFromMmCif)
-            : b.apply(StateTransforms.Model.TrajectoryFromPDB);
-
-        return parsed.apply(StateTransforms.Model.ModelFromTrajectory, { modelIndex });
-    }
-
-    export function structure(b: StateBuilder.To<PSO.Molecule.Model>) {
-        return b.apply(StateTransforms.Model.StructureFromModel, void 0, { tags: 'structure' })
-    };
-
-    export function selectChain(b: StateBuilder.To<PSO.Molecule.Structure>, auth_asym_id: string) {
-        const expression = MS.struct.generator.atomGroups({
-            'chain-test': MS.core.rel.eq([MS.struct.atomProperty.macromolecular.auth_asym_id(), auth_asym_id])
-        })
-        return b.apply(StateTransforms.Model.StructureSelectionFromExpression, { expression, label: `Chain ${auth_asym_id}` });
-    }
-
-    export function select(b: StateBuilder.To<PSO.Molecule.Structure>, expression: Expression) {
-        return b.apply(StateTransforms.Model.StructureSelectionFromExpression, { expression });
-    }
-
-    export function selectSurroundingsOfFirstResidue(b: StateBuilder.To<PSO.Molecule.Structure>, comp_id: string, radius: number) {
-        const expression = MS.struct.modifier.includeSurroundings({
-            0: MS.struct.filter.first([
-                MS.struct.generator.atomGroups({
-                    'residue-test': MS.core.rel.eq([MS.struct.atomProperty.macromolecular.label_comp_id(), comp_id]),
-                    'group-by': MS.struct.atomProperty.macromolecular.residueKey()
-                })
-            ]),
-            radius
-        })
-        return b.apply(StateTransforms.Model.StructureSelectionFromExpression, { expression, label: `Surr. ${comp_id} (${radius} ang)` });
-    }
-
-    export function identityTransform(b: StateBuilder.To<PSO.Molecule.Structure>, m: Mat4) {
-        return b.apply(StateTransforms.Model.TransformStructureConformation,
-            { transform: { name: 'components', params: { axis: Vec3.create(1, 0, 0), angle: 0, translation: Vec3.zero() } } },
-            { tags: 'transform' });
-    }
-
-    export function transform(b: StateBuilder.To<PSO.Molecule.Structure>, matrix: Mat4) {
-        return b.apply(StateTransforms.Model.TransformStructureConformation, {
-            transform: { name: 'matrix', params: matrix }
-        }, { tags: 'transform' });
-    }
-
-    export function assemble(b: StateBuilder.To<PSO.Molecule.Model>, id?: string) {
-        const props = {
-            type: {
-                name: 'assembly' as const,
-                params: { id: id || 'deposited' }
-            }
-        }
-        return b.apply(StateTransforms.Model.StructureFromModel, props, { tags: 'asm' })
-    }
-
-    export function visual(ctx: PluginContext, visualRoot: StateBuilder.To<PSO.Molecule.Structure>) {
-        visualRoot.apply(StateTransforms.Model.StructureComplexElement, { type: 'atomic-sequence' })
-            .apply(StateTransforms.Representation.StructureRepresentation3D,
-                createStructureRepresentationParams(ctx, void 0, { type: 'cartoon' }), { tags: 'seq-visual' });
-        visualRoot.apply(StateTransforms.Model.StructureComplexElement, { type: 'atomic-het' })
-            .apply(StateTransforms.Representation.StructureRepresentation3D,
-                createStructureRepresentationParams(ctx, void 0, { type: 'ball-and-stick' }), { tags: 'het-visual' });
-        return visualRoot;
-    }
-
-    export function ballsAndSticks(ctx: PluginContext, visualRoot: StateBuilder.To<PSO.Molecule.Structure>, expression: Expression, color?: ColorTheme.BuiltIn) {
-        visualRoot
-            .apply(StateTransforms.Model.StructureSelectionFromExpression, { expression })
-            .apply(StateTransforms.Representation.StructureRepresentation3D,
-                createStructureRepresentationParams(ctx, void 0, { type: 'ball-and-stick', color }), { tags: 'het-visual' });
-        return visualRoot;
-    }
-
-}
--- a/src/apps/basic-wrapper/index.ts
+++ b/src/apps/basic-wrapper/index.ts
@@ -1,219 +0,0 @@
-/**
- * Copyright (c) 2019 mol* contributors, licensed under MIT, See LICENSE file for more info.
- *
- * @author David Sehnal <david.sehnal@gmail.com>
- */
-
-import { createPlugin, DefaultPluginSpec } from '../../mol-plugin';
-import './index.html'
-import { PluginContext } from '../../mol-plugin/context';
-import { PluginCommands } from '../../mol-plugin/commands';
-import { StateTransforms } from '../../mol-plugin-state/transforms';
-import { Color } from '../../mol-util/color';
-import { PluginStateObject as PSO, PluginStateObject } from '../../mol-plugin-state/objects';
-import { AnimateModelIndex } from '../../mol-plugin-state/animation/built-in';
-import { StateBuilder, StateTransform } from '../../mol-state';
-import { StripedResidues } from './coloring';
-import { StaticSuperpositionTestData, buildStaticSuperposition, dynamicSuperpositionTest } from './superposition';
-import { PDBeStructureQualityReport } from '../../mol-plugin/behavior/dynamic/custom-props';
-import { CustomToastMessage } from './controls';
-import { EmptyLoci } from '../../mol-model/loci';
-import { StructureSelection } from '../../mol-model/structure';
-import { Script } from '../../mol-script/script';
-import { createStructureRepresentationParams } from '../../mol-plugin-state/helpers/structure-representation-params';
-require('mol-plugin-ui/skin/light.scss')
-
-type SupportedFormats = 'cif' | 'pdb'
-type LoadParams = { url: string, format?: SupportedFormats, assemblyId?: string }
-
-class BasicWrapper {
-    plugin: PluginContext;
-
-    init(target: string | HTMLElement) {
-        this.plugin = createPlugin(typeof target === 'string' ? document.getElementById(target)! : target, {
-            ...DefaultPluginSpec,
-            layout: {
-                initial: {
-                    isExpanded: false,
-                    showControls: false
-                },
-                controls: {
-                    // left: 'none',
-                    // right: BasicWrapperControls
-                }
-            },
-            components: {
-                remoteState: 'none'
-            }
-        });
-
-        this.plugin.representation.structure.themes.colorThemeRegistry.add(StripedResidues.colorThemeProvider!);
-        this.plugin.managers.lociLabels.addProvider(StripedResidues.labelProvider!);
-        this.plugin.customModelProperties.register(StripedResidues.propertyProvider, true);
-    }
-
-    private download(b: StateBuilder.To<PSO.Root>, url: string) {
-        return b.apply(StateTransforms.Data.Download, { url, isBinary: false })
-    }
-
-    private parse(b: StateBuilder.To<PSO.Data.Binary | PSO.Data.String>, format: SupportedFormats, assemblyId: string) {
-        const parsed = format === 'cif'
-            ? b.apply(StateTransforms.Data.ParseCif).apply(StateTransforms.Model.TrajectoryFromMmCif)
-            : b.apply(StateTransforms.Model.TrajectoryFromPDB);
-
-        const props = {
-            type: {
-                name: 'assembly' as const,
-                params: { id: assemblyId || 'deposited' }
-            }
-        }
-        return parsed
-            .apply(StateTransforms.Model.ModelFromTrajectory, { modelIndex: 0 })
-            .apply(StateTransforms.Model.CustomModelProperties, { autoAttach: [StripedResidues.propertyProvider.descriptor.name], properties: {} }, { ref: 'props', state: { isGhost: false } })
-            .apply(StateTransforms.Model.StructureFromModel, props, { ref: 'asm' });
-    }
-
-    private visual(visualRoot: StateBuilder.To<PSO.Molecule.Structure>) {
-        visualRoot.apply(StateTransforms.Model.StructureComplexElement, { type: 'atomic-sequence' }, { ref: 'seq' })
-            .apply(StateTransforms.Representation.StructureRepresentation3D,
-                createStructureRepresentationParams(this.plugin, void 0, { type: 'cartoon' }), { ref: 'seq-visual' });
-        visualRoot.apply(StateTransforms.Model.StructureComplexElement, { type: 'atomic-het' })
-            .apply(StateTransforms.Representation.StructureRepresentation3D,
-                createStructureRepresentationParams(this.plugin, void 0, { type: 'ball-and-stick' }), { ref: 'het-visual' });
-        visualRoot.apply(StateTransforms.Model.StructureComplexElement, { type: 'water' })
-            .apply(StateTransforms.Representation.StructureRepresentation3D,
-                createStructureRepresentationParams(this.plugin, void 0, { type: 'ball-and-stick', typeParams: { alpha: 0.51 } }), { ref: 'water-visual' });
-        visualRoot.apply(StateTransforms.Model.StructureComplexElement, { type: 'spheres' })
-            .apply(StateTransforms.Representation.StructureRepresentation3D,
-                createStructureRepresentationParams(this.plugin, void 0, { type: 'spacefill' }), { ref: 'ihm-visual' });
-        return visualRoot;
-    }
-
-    private loadedParams: LoadParams = { url: '', format: 'cif', assemblyId: '' };
-    async load({ url, format = 'cif', assemblyId = '' }: LoadParams) {
-        let loadType: 'full' | 'update' = 'full';
-
-        const state = this.plugin.state.data;
-
-        if (this.loadedParams.url !== url || this.loadedParams.format !== format) {
-            loadType = 'full';
-        } else if (this.loadedParams.url === url) {
-            if (state.select('asm').length > 0) loadType = 'update';
-        }
-
-        let tree: StateBuilder.Root;
-        if (loadType === 'full') {
-            await PluginCommands.State.RemoveObject(this.plugin, { state, ref: state.tree.root.ref });
-            tree = state.build();
-            this.visual(this.parse(this.download(tree.toRoot(), url), format, assemblyId));
-        } else {
-            const props = {
-                type: {
-                    name: 'assembly' as const,
-                    params: { id: assemblyId || 'deposited' }
-                }
-            }
-
-            tree = state.build();
-            tree.to('asm').update(StateTransforms.Model.StructureFromModel, p => ({ ...p, ...props }));
-        }
-
-        await PluginCommands.State.Update(this.plugin, { state: this.plugin.state.data, tree });
-        this.loadedParams = { url, format, assemblyId };
-        PluginCommands.Camera.Reset(this.plugin, { });
-    }
-
-    setBackground(color: number) {
-        const renderer = this.plugin.canvas3d!.props.renderer;
-        PluginCommands.Canvas3D.SetSettings(this.plugin, { settings: { renderer: { ...renderer,  backgroundColor: Color(color) } } });
-    }
-
-    toggleSpin() {
-        if (!this.plugin.canvas3d) return;
-
-        const trackball = this.plugin.canvas3d.props.trackball;
-        const spinning = trackball.spin;
-        PluginCommands.Canvas3D.SetSettings(this.plugin, { settings: { trackball: { ...trackball, spin: !trackball.spin } } });
-        if (!spinning) PluginCommands.Camera.Reset(this.plugin, { });
-    }
-
-    animate = {
-        modelIndex: {
-            maxFPS: 8,
-            onceForward: () => { this.plugin.state.animation.play(AnimateModelIndex, { maxFPS: Math.max(0.5, this.animate.modelIndex.maxFPS | 0), mode: { name: 'once', params: { direction: 'forward' } } }) },
-            onceBackward: () => { this.plugin.state.animation.play(AnimateModelIndex, { maxFPS: Math.max(0.5, this.animate.modelIndex.maxFPS | 0), mode: { name: 'once', params: { direction: 'backward' } } }) },
-            palindrome: () => { this.plugin.state.animation.play(AnimateModelIndex, { maxFPS: Math.max(0.5, this.animate.modelIndex.maxFPS | 0), mode: { name: 'palindrome', params: {} } }) },
-            loop: () => { this.plugin.state.animation.play(AnimateModelIndex, { maxFPS: Math.max(0.5, this.animate.modelIndex.maxFPS | 0), mode: { name: 'loop', params: {} } }) },
-            stop: () => this.plugin.state.animation.stop()
-        }
-    }
-
-    coloring = {
-        applyStripes: async () => {
-            const state = this.plugin.state.data;
-
-            const visuals = state.selectQ(q => q.ofTransformer(StateTransforms.Representation.StructureRepresentation3D));
-            const tree = state.build();
-            const colorTheme = { name: StripedResidues.propertyProvider.descriptor.name, params: this.plugin.representation.structure.themes.colorThemeRegistry.get(StripedResidues.propertyProvider.descriptor.name).defaultValues };
-
-            for (const v of visuals) {
-                tree.to(v).update(old => ({ ...old, colorTheme }));
-            }
-
-            await PluginCommands.State.Update(this.plugin, { state, tree });
-        }
-    }
-
-    interactivity = {
-        highlightOn: () => {
-            const seq_id = 7;
-            const data = (this.plugin.state.data.select('asm')[0].obj as PluginStateObject.Molecule.Structure).data;
-            const sel = Script.getStructureSelection(Q => Q.struct.generator.atomGroups({
-                'residue-test': Q.core.rel.eq([Q.struct.atomProperty.macromolecular.label_seq_id(), seq_id]),
-                'group-by': Q.struct.atomProperty.macromolecular.residueKey()
-            }), data);
-            const loci = StructureSelection.toLociWithSourceUnits(sel);
-            this.plugin.managers.interactivity.lociHighlights.highlightOnly({ loci });
-        },
-        clearHighlight: () => {
-            this.plugin.managers.interactivity.lociHighlights.highlightOnly({ loci: EmptyLoci });
-        }
-    }
-
-    tests = {
-        staticSuperposition: async () => {
-            const state = this.plugin.state.data;
-            const tree = buildStaticSuperposition(this.plugin, StaticSuperpositionTestData);
-            await PluginCommands.State.RemoveObject(this.plugin, { state, ref: StateTransform.RootRef });
-            await PluginCommands.State.Update(this.plugin, { state, tree });
-        },
-        dynamicSuperposition: async () => {
-            await PluginCommands.State.RemoveObject(this.plugin, { state: this.plugin.state.data, ref: StateTransform.RootRef });
-            await dynamicSuperpositionTest(this.plugin, ['1tqn', '2hhb', '4hhb'], 'HEM');
-        },
-        toggleValidationTooltip: async () => {
-            const state = this.plugin.state.behaviors;
-            const tree = state.build().to(PDBeStructureQualityReport.id).update(PDBeStructureQualityReport, p => ({ ...p, showTooltip: !p.showTooltip }));
-            await PluginCommands.State.Update(this.plugin, { state, tree });
-        },
-        showToasts: () => {
-            PluginCommands.Toast.Show(this.plugin, {
-                title: 'Toast 1',
-                message: 'This is an example text, timeout 3s',
-                key: 'toast-1',
-                timeoutMs: 3000
-            });
-            PluginCommands.Toast.Show(this.plugin, {
-                title: 'Toast 2',
-                message: CustomToastMessage,
-                key: 'toast-2'
-            });
-        },
-        hideToasts: () => {
-            PluginCommands.Toast.Hide(this.plugin, { key: 'toast-1' });
-            PluginCommands.Toast.Hide(this.plugin, { key: 'toast-2' });
-        }
-    }
-}
-
-(window as any).BasicMolStarWrapper = new BasicWrapper();
--- a/src/apps/basic-wrapper/superposition.ts
+++ b/src/apps/basic-wrapper/superposition.ts
@@ -1,108 +0,0 @@
-/**
- * Copyright (c) 2019 mol* contributors, licensed under MIT, See LICENSE file for more info.
- *
- * @author David Sehnal <david.sehnal@gmail.com>
- */
-
-// TODO: move to an "example"
-
-import { PluginContext } from '../../mol-plugin/context';
-import { Mat4 } from '../../mol-math/linear-algebra';
-import { StateHelper } from './helpers';
-import { PluginCommands } from '../../mol-plugin/commands';
-import { StateSelection, StateBuilder } from '../../mol-state';
-import { PluginStateObject as PSO } from '../../mol-plugin-state/objects';
-import { MolScriptBuilder as MS } from '../../mol-script/language/builder';
-import { compile } from '../../mol-script/runtime/query/compiler';
-import { StructureSelection, QueryContext } from '../../mol-model/structure';
-import { superposeStructures } from '../../mol-model/structure/structure/util/superposition';
-import Expression from '../../mol-script/language/expression';
-
-export type SuperpositionTestInput = {
-    pdbId: string,
-    auth_asym_id: string,
-    matrix: Mat4
-}[];
-
-// function getAxisAngleTranslation(m: Mat4) {
-//     const translation = Mat4.getTranslation(Vec3.zero(), m);
-//     const axis = Vec3.zero();
-//     const angle = 180 / Math.PI * Quat.getAxisAngle(axis, Mat4.getRotation(Quat.zero(), m));
-//     return { translation, axis, angle };
-// }
-
-export function buildStaticSuperposition(ctx: PluginContext, src: SuperpositionTestInput) {
-    const b = ctx.state.data.build().toRoot();
-    for (const s of src) {
-        StateHelper.visual(ctx,
-            StateHelper.transform(
-                StateHelper.selectChain(
-                    StateHelper.structure(
-                        StateHelper.getModel(StateHelper.download(b, `https://www.ebi.ac.uk/pdbe/static/entry/${s.pdbId}_updated.cif`), 'cif')),
-                    s.auth_asym_id
-                ),
-                s.matrix
-            )
-        );
-    }
-    return b;
-}
-
-export const StaticSuperpositionTestData: SuperpositionTestInput = [
-    { pdbId: '1aj5', auth_asym_id: 'A', matrix: Mat4.identity() },
-    { pdbId: '1df0', auth_asym_id: 'B', matrix: Mat4.ofRows([
-        [0.406, 0.879, 0.248, -200.633],
-        [0.693, -0.473, 0.544, 73.403],
-        [0.596, -0.049, -0.802, -14.209],
-        [0, 0, 0, 1]] )},
-    { pdbId: '1dvi', auth_asym_id: 'A', matrix: Mat4.ofRows([
-        [-0.053, -0.077, 0.996, -45.633],
-        [-0.312, 0.949, 0.057, -12.255],
-        [-0.949, -0.307, -0.074, 53.562],
-        [0, 0, 0, 1]] )}
-];
-
-export async function dynamicSuperpositionTest(ctx: PluginContext, src: string[], comp_id: string) {
-    const state = ctx.state.data;
-
-    const structures = state.build().toRoot();
-    for (const s of src) {
-        StateHelper.structure(
-            StateHelper.getModel(StateHelper.download(structures, `https://www.ebi.ac.uk/pdbe/static/entry/${s}_updated.cif`), 'cif'));
-    }
-
-    await PluginCommands.State.Update(ctx, { state, tree: structures });
-
-    const pivot = MS.struct.filter.first([
-        MS.struct.generator.atomGroups({
-            'residue-test': MS.core.rel.eq([MS.struct.atomProperty.macromolecular.label_comp_id(), comp_id]),
-            'group-by': MS.struct.atomProperty.macromolecular.residueKey()
-        })
-    ]);
-    const rest = MS.struct.modifier.exceptBy({
-        0: MS.struct.generator.all(),
-        by: pivot
-    });
-
-    const query = compile<StructureSelection>(pivot);
-    const xs = state.select(StateSelection.Generators.rootsOfType(PSO.Molecule.Structure));
-    const selections = xs.map(s => StructureSelection.toLociWithCurrentUnits(query(new QueryContext(s.obj!.data))));
-
-    const transforms = superposeStructures(selections);
-    const visuals = state.build();
-
-    siteVisual(ctx, StateHelper.selectSurroundingsOfFirstResidue(visuals.to(xs[0].transform.ref), 'HEM', 7), pivot, rest);
-    for (let i = 1; i < selections.length; i++) {
-        const root = visuals.to(xs[i].transform.ref);
-        siteVisual(ctx,
-            StateHelper.transform(StateHelper.selectSurroundingsOfFirstResidue(root, 'HEM', 7), transforms[i - 1].bTransform),
-            pivot, rest);
-    }
-
-    await PluginCommands.State.Update(ctx, { state, tree: visuals });
-}
-
-function siteVisual(ctx: PluginContext, b: StateBuilder.To<PSO.Molecule.Structure>, pivot: Expression, rest: Expression) {
-    StateHelper.ballsAndSticks(ctx, b, pivot, 'residue-name');
-    StateHelper.ballsAndSticks(ctx, b, rest, 'uniform');
-}
--- a/src/apps/chem-comp-bond/create-table.ts
+++ b/src/apps/chem-comp-bond/create-table.ts
@@ -1,252 +0,0 @@
-/**
- * Copyright (c) 2018-2019 mol* contributors, licensed under MIT, See LICENSE file for more info.
- *
- * @author Alexander Rose <alexander.rose@weirdbyte.de>
- */
-
-import * as argparse from 'argparse'
-import * as util from 'util'
-import * as path from 'path'
-import * as fs from 'fs'
-import * as zlib from 'zlib'
-import fetch from 'node-fetch'
-require('util.promisify').shim()
-const readFile = util.promisify(fs.readFile)
-const writeFile = util.promisify(fs.writeFile)
-
-import { Progress } from '../../mol-task'
-import { Database, Table, DatabaseCollection } from '../../mol-data/db'
-import { CIF } from '../../mol-io/reader/cif'
-import { CifWriter } from '../../mol-io/writer/cif'
-import { CCD_Schema } from '../../mol-io/reader/cif/schema/ccd'
-import { SetUtils } from '../../mol-util/set'
-import { DefaultMap } from '../../mol-util/map'
-import { mmCIF_chemCompBond_schema } from '../../mol-io/reader/cif/schema/mmcif-extras';
-
-export async function ensureAvailable(path: string, url: string) {
-    if (FORCE_DOWNLOAD || !fs.existsSync(path)) {
-        console.log(`downloading ${url}...`)
-        const data = await fetch(url)
-        if (!fs.existsSync(DATA_DIR)) {
-            fs.mkdirSync(DATA_DIR);
-        }
-        if (url.endsWith('.gz')) {
-            await writeFile(path, zlib.gunzipSync(await data.buffer()))
-        } else {
-            await writeFile(path, await data.text())
-        }
-        console.log(`done downloading ${url}`)
-    }
-}
-
-export async function ensureDataAvailable() {
-    await ensureAvailable(CCD_PATH, CCD_URL)
-    await ensureAvailable(PVCD_PATH, PVCD_URL)
-}
-
-export async function readFileAsCollection<S extends Database.Schema>(path: string, schema: S) {
-    const parsed = await parseCif(await readFile(path, 'utf8'))
-    return CIF.toDatabaseCollection(schema, parsed.result)
-}
-
-export async function readCCD() {
-    return readFileAsCollection(CCD_PATH, CCD_Schema)
-}
-
-export async function readPVCD() {
-    return readFileAsCollection(PVCD_PATH, CCD_Schema)
-}
-
-async function parseCif(data: string | Uint8Array) {
-    const comp = CIF.parse(data);
-    console.time('parse cif');
-    const parsed = await comp.run(p => console.log(Progress.format(p)), 250);
-    console.timeEnd('parse cif');
-    if (parsed.isError) throw parsed;
-    return parsed
-}
-
-export function getEncodedCif(name: string, database: Database<Database.Schema>, binary = false) {
-    const encoder = CifWriter.createEncoder({ binary, encoderName: 'mol*' });
-    CifWriter.Encoder.writeDatabase(encoder, name, database)
-    return encoder.getData();
-}
-
-type CCB = Table<CCD_Schema['chem_comp_bond']>
-type CCA = Table<CCD_Schema['chem_comp_atom']>
-
-function ccbKey(compId: string, atomId1: string, atomId2: string) {
-    return atomId1 < atomId2 ? `${compId}:${atomId1}-${atomId2}` : `${compId}:${atomId2}-${atomId1}`
-}
-
-function addChemCompBondToSet(set: Set<string>, ccb: CCB) {
-    for (let i = 0, il = ccb._rowCount; i < il; ++i) {
-        set.add(ccbKey(ccb.comp_id.value(i), ccb.atom_id_1.value(i), ccb.atom_id_2.value(i)))
-    }
-    return set
-}
-
-function addChemCompAtomToSet(set: Set<string>, cca: CCA) {
-    for (let i = 0, il = cca._rowCount; i < il; ++i) {
-        set.add(cca.atom_id.value(i))
-    }
-    return set
-}
-
-function checkAddingBondsFromPVCD(pvcd: DatabaseCollection<CCD_Schema>) {
-    const ccbSetByParent = DefaultMap<string, Set<string>>(() => new Set())
-
-    for (const k in pvcd) {
-        const { chem_comp, chem_comp_bond } = pvcd[k]
-        if (chem_comp_bond._rowCount) {
-            const parentIds = chem_comp.mon_nstd_parent_comp_id.value(0)
-            if (parentIds.length === 0) {
-                const set = ccbSetByParent.getDefault(chem_comp.id.value(0))
-                addChemCompBondToSet(set, chem_comp_bond)
-            } else {
-                for (let i = 0, il = parentIds.length; i < il; ++i) {
-                    const parentId = parentIds[i]
-                    const set = ccbSetByParent.getDefault(parentId)
-                    addChemCompBondToSet(set, chem_comp_bond)
-                }
-            }
-        }
-    }
-
-    for (const k in pvcd) {
-        const { chem_comp, chem_comp_atom, chem_comp_bond } = pvcd[k]
-        if (chem_comp_bond._rowCount) {
-            const parentIds = chem_comp.mon_nstd_parent_comp_id.value(0)
-            if (parentIds.length > 0) {
-                for (let i = 0, il = parentIds.length; i < il; ++i) {
-                    const entryBonds = addChemCompBondToSet(new Set<string>(), chem_comp_bond)
-                    const entryAtoms = addChemCompAtomToSet(new Set<string>(), chem_comp_atom)
-                    const extraBonds = SetUtils.difference(ccbSetByParent.get(parentIds[i])!, entryBonds)
-                    extraBonds.forEach(bk => {
-                        const [a1, a2] = bk.split('|')
-                        if (entryAtoms.has(a1) && entryAtoms.has(a2)) {
-                            console.error(`Adding all PVCD bonds would wrongly add bond ${bk} for ${k}`)
-                        }
-                    })
-                }
-            }
-        }
-    }
-}
-
-async function createBonds() {
-    await ensureDataAvailable()
-    const ccd = await readCCD()
-    const pvcd = await readPVCD()
-
-    const ccbSet = new Set<string>()
-
-    const comp_id: string[] = []
-    const atom_id_1: string[] = []
-    const atom_id_2: string[] = []
-    const value_order: typeof mmCIF_chemCompBond_schema['value_order']['T'][] = []
-    const pdbx_aromatic_flag: typeof mmCIF_chemCompBond_schema['pdbx_aromatic_flag']['T'][] = []
-    const pdbx_stereo_config: typeof mmCIF_chemCompBond_schema['pdbx_stereo_config']['T'][] = []
-    const molstar_protonation_variant: string[] = []
-
-    function addBonds(compId: string, ccb: CCB, protonationVariant: boolean) {
-        for (let i = 0, il = ccb._rowCount; i < il; ++i) {
-            const atomId1 = ccb.atom_id_1.value(i)
-            const atomId2 = ccb.atom_id_2.value(i)
-            const k = ccbKey(compId, atomId1, atomId2)
-            if (!ccbSet.has(k)) {
-                atom_id_1.push(atomId1)
-                atom_id_2.push(atomId2)
-                comp_id.push(compId)
-                value_order.push(ccb.value_order.value(i))
-                pdbx_aromatic_flag.push(ccb.pdbx_aromatic_flag.value(i))
-                pdbx_stereo_config.push(ccb.pdbx_stereo_config.value(i))
-                molstar_protonation_variant.push(protonationVariant ? 'Y' : 'N')
-                ccbSet.add(k)
-            }
-        }
-    }
-
-    // check adding bonds from PVCD
-    checkAddingBondsFromPVCD(pvcd)
-
-    // add bonds from PVCD
-    for (const k in pvcd) {
-        const { chem_comp, chem_comp_bond } = pvcd[k]
-        if (chem_comp_bond._rowCount) {
-            const parentIds = chem_comp.mon_nstd_parent_comp_id.value(0)
-            if (parentIds.length === 0) {
-                addBonds(chem_comp.id.value(0), chem_comp_bond, false)
-            } else {
-                for (let i = 0, il = parentIds.length; i < il; ++i) {
-                    addBonds(parentIds[i], chem_comp_bond, true)
-                }
-            }
-        }
-    }
-
-    // add bonds from CCD
-    for (const k in ccd) {
-        const { chem_comp, chem_comp_bond } = ccd[k]
-        if (chem_comp_bond._rowCount) {
-            addBonds(chem_comp.id.value(0), chem_comp_bond, false)
-        }
-    }
-
-    const bondTable = Table.ofArrays(mmCIF_chemCompBond_schema, {
-        comp_id, atom_id_1, atom_id_2, value_order,
-        pdbx_aromatic_flag, pdbx_stereo_config, molstar_protonation_variant
-    })
-
-    const bondDatabase =  Database.ofTables(
-        TABLE_NAME,
-        { chem_comp_bond: mmCIF_chemCompBond_schema },
-        { chem_comp_bond: bondTable }
-    )
-
-    return bondDatabase
-}
-
-async function run(out: string, binary = false) {
-    const bonds = await createBonds()
-
-    const cif = getEncodedCif(TABLE_NAME, bonds, binary)
-    if (!fs.existsSync(path.dirname(out))) {
-        fs.mkdirSync(path.dirname(out));
-    }
-    writeFile(out, cif)
-}
-
-const TABLE_NAME = 'CHEM_COMP_BONDS'
-
-const DATA_DIR = path.join(__dirname, '..', '..', '..', 'build/data')
-const CCD_PATH = path.join(DATA_DIR, 'components.cif')
-const PVCD_PATH = path.join(DATA_DIR, 'aa-variants-v1.cif')
-const CCD_URL = 'http://ftp.wwpdb.org/pub/pdb/data/monomers/components.cif'
-const PVCD_URL = 'http://ftp.wwpdb.org/pub/pdb/data/monomers/aa-variants-v1.cif'
-
-const parser = new argparse.ArgumentParser({
-    addHelp: true,
-    description: 'Create a cif file with one big table of all chem_comp_bond entries from the CCD and PVCD.'
-});
-parser.addArgument('out', {
-    help: 'Generated file output path.'
-});
-parser.addArgument([ '--forceDownload', '-f' ], {
-    action: 'storeTrue',
-    help: 'Force download of CCD and PVCD.'
-});
-parser.addArgument([ '--binary', '-b' ], {
-    action: 'storeTrue',
-    help: 'Output as BinaryCIF.'
-});
-interface Args {
-    out: string
-    forceDownload?: boolean
-    binary?: boolean
-}
-const args: Args = parser.parseArgs();
-
-const FORCE_DOWNLOAD = args.forceDownload
-
-run(args.out, args.binary)
--- a/src/apps/demos/lighting/index.ts
+++ b/src/apps/demos/lighting/index.ts
@@ -1,178 +0,0 @@
-/**
- * Copyright (c) 2019 mol* contributors, licensed under MIT, See LICENSE file for more info.
- *
- * @author Alexander Rose <alexander.rose@weirdbyte.de>
- */
-
-import { createPlugin, DefaultPluginSpec } from '../../../mol-plugin';
-import './index.html'
-import { PluginContext } from '../../../mol-plugin/context';
-import { PluginCommands } from '../../../mol-plugin/commands';
-import { StateTransforms } from '../../../mol-plugin-state/transforms';
-import { PluginStateObject as PSO } from '../../../mol-plugin-state/objects';
-import { StateBuilder } from '../../../mol-state';
-import { Canvas3DProps } from '../../../mol-canvas3d/canvas3d';
-import { createStructureRepresentationParams } from '../../../mol-plugin-state/helpers/structure-representation-params';
-require('mol-plugin-ui/skin/light.scss')
-
-type SupportedFormats = 'cif' | 'pdb'
-type LoadParams = { url: string, format?: SupportedFormats, assemblyId?: string }
-
-const Canvas3DPresets = {
-    illustrative: {
-        multiSample: {
-            mode: 'temporal' as Canvas3DProps['multiSample']['mode']
-        },
-        postprocessing: {
-            occlusionEnable: true,
-            occlusionBias: 0.8,
-            occlusionKernelSize: 6,
-            outlineEnable: true,
-        },
-        renderer: {
-            ambientIntensity: 1,
-            lightIntensity: 0,
-        }
-    },
-    occlusion: {
-        multiSample: {
-            mode: 'temporal' as Canvas3DProps['multiSample']['mode']
-        },
-        postprocessing: {
-            occlusionEnable: true,
-            occlusionBias: 0.8,
-            occlusionKernelSize: 6,
-            outlineEnable: false,
-        },
-        renderer: {
-            ambientIntensity: 0.4,
-            lightIntensity: 0.6,
-        }
-    },
-    standard: {
-        multiSample: {
-            mode: 'off' as Canvas3DProps['multiSample']['mode']
-        },
-        postprocessing: {
-            occlusionEnable: false,
-            outlineEnable: false,
-        },
-        renderer: {
-            ambientIntensity: 0.4,
-            lightIntensity: 0.6,
-        }
-    }
-}
-
-type Canvas3DPreset = keyof typeof Canvas3DPresets
-
-function getPreset(preset: Canvas3DPreset) {
-    switch (preset) {
-        case 'illustrative': return Canvas3DPresets['illustrative']
-        case 'standard': return Canvas3DPresets['standard']
-        case 'occlusion': return Canvas3DPresets['occlusion']
-    }
-}
-
-class LightingDemo {
-    plugin: PluginContext;
-
-    init(target: string | HTMLElement) {
-        this.plugin = createPlugin(typeof target === 'string' ? document.getElementById(target)! : target, {
-            ...DefaultPluginSpec,
-            layout: {
-                initial: {
-                    isExpanded: false,
-                    showControls: false
-                },
-                controls: { left: 'none', right: 'none', top: 'none', bottom: 'none' }
-            }
-        });
-
-        this.setPreset('illustrative');
-    }
-
-    setPreset(preset: Canvas3DPreset) {
-        const props = getPreset(preset)
-        PluginCommands.Canvas3D.SetSettings(this.plugin, { settings: {
-            ...props,
-            multiSample: {
-                ...this.plugin.canvas3d!.props.multiSample,
-                ...props.multiSample
-            },
-            renderer: {
-                ...this.plugin.canvas3d!.props.renderer,
-                ...props.renderer
-            },
-            postprocessing: {
-                ...this.plugin.canvas3d!.props.postprocessing,
-                ...props.postprocessing
-            },
-        }});
-    }
-
-    private download(b: StateBuilder.To<PSO.Root>, url: string) {
-        return b.apply(StateTransforms.Data.Download, { url, isBinary: false })
-    }
-
-    private parse(b: StateBuilder.To<PSO.Data.Binary | PSO.Data.String>, format: SupportedFormats, assemblyId: string) {
-        const parsed = format === 'cif'
-            ? b.apply(StateTransforms.Data.ParseCif).apply(StateTransforms.Model.TrajectoryFromMmCif)
-            : b.apply(StateTransforms.Model.TrajectoryFromPDB);
-
-        const props = {
-            type: {
-                name: 'assembly' as const,
-                params: { id: assemblyId || 'deposited' }
-            }
-        }
-        return parsed
-            .apply(StateTransforms.Model.ModelFromTrajectory, { modelIndex: 0 })
-            .apply(StateTransforms.Model.StructureFromModel, props, { ref: 'asm' });
-    }
-
-    private visual(visualRoot: StateBuilder.To<PSO.Molecule.Structure>) {
-        visualRoot.apply(StateTransforms.Model.StructureComplexElement, { type: 'atomic-sequence' })
-            .apply(StateTransforms.Representation.StructureRepresentation3D,
-                createStructureRepresentationParams(this.plugin, void 0, { type: 'spacefill', color: 'illustrative' }), { ref: 'seq-visual' });
-        visualRoot.apply(StateTransforms.Model.StructureComplexElement, { type: 'atomic-het' })
-            .apply(StateTransforms.Representation.StructureRepresentation3D,
-                createStructureRepresentationParams(this.plugin, void 0, { type: 'ball-and-stick' }), { ref: 'het-visual' });
-        return visualRoot;
-    }
-
-    private loadedParams: LoadParams = { url: '', format: 'cif', assemblyId: '' };
-    async load({ url, format = 'cif', assemblyId = '' }: LoadParams) {
-        let loadType: 'full' | 'update' = 'full';
-
-        const state = this.plugin.state.data;
-
-        if (this.loadedParams.url !== url || this.loadedParams.format !== format) {
-            loadType = 'full';
-        } else if (this.loadedParams.url === url) {
-            if (state.select('asm').length > 0) loadType = 'update';
-        }
-
-        let tree: StateBuilder.Root;
-        if (loadType === 'full') {
-            await PluginCommands.State.RemoveObject(this.plugin, { state, ref: state.tree.root.ref });
-            tree = state.build();
-            this.visual(this.parse(this.download(tree.toRoot(), url), format, assemblyId));
-        } else {
-            const props = {
-                type: {
-                    name: 'assembly' as const,
-                    params: { id: assemblyId || 'deposited' }
-                }
-            }
-            tree = state.build();
-            tree.to('asm').update(StateTransforms.Model.StructureFromModel, p => ({ ...p, ...props }));
-        }
-
-        await PluginCommands.State.Update(this.plugin, { state: this.plugin.state.data, tree });
-        this.loadedParams = { url, format, assemblyId };
-        PluginCommands.Camera.Reset(this.plugin, { });
-    }
-}
-
-(window as any).LightingDemo = new LightingDemo();
--- a/src/apps/docking-viewer/index.html
+++ b/src/apps/docking-viewer/index.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<html lang="en">
+    <head>
+        <meta charset="utf-8" />
+        <meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
+        <title>Mol* Docking Viewer</title>
+        <style>
+            #app {
+                position: absolute;
+                left: 100px;
+                top: 100px;
+                width: 800px;
+                height: 600px;
+            }
+        </style>
+        <link rel="stylesheet" type="text/css" href="molstar.css" />
+    </head>
+    <body>
+        <div id="app"></div>
+        <script type="text/javascript" src="./molstar.js"></script>
+        <script type="text/javascript">
+            var viewer = new DockingViewer('app', [0x33DD22, 0x1133EE], true);
+
+            function getParam(name, regex) {
+                var r = new RegExp(name + '=' + '(' + regex + ')[&]?', 'i');
+                return decodeURIComponent(((window.location.search || '').match(r) || [])[1] || '');
+            }
+            var pdbqt = getParam('pdbqt', '[^&]+').trim();
+            var mol2 = getParam('mol2', '[^&]+').trim();
+
+            viewer.loadStructuresFromUrlsAndMerge([
+                { url: pdbqt, format: 'pdbqt' },
+                { url: mol2, format: 'mol2' }
+            ]);
+        </script>
+    </body>
+</html>
--- a/src/apps/docking-viewer/index.ts
+++ b/src/apps/docking-viewer/index.ts
@@ -0,0 +1,213 @@
+/**
+ * Copyright (c) 2018-2020 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * @author David Sehnal <david.sehnal@gmail.com>
+ * @author Alexander Rose <alexander.rose@weirdbyte.de>
+ */
+
+import '../../mol-util/polyfill';
+import { createPlugin } from '../../mol-plugin';
+import { DefaultPluginSpec } from '../../mol-plugin/spec';
+import './index.html';
+import { PluginContext } from '../../mol-plugin/context';
+import { PluginCommands } from '../../mol-plugin/commands';
+import { PluginSpec } from '../../mol-plugin/spec';
+import { PluginConfig } from '../../mol-plugin/config';
+import { ObjectKeys } from '../../mol-util/type-helpers';
+import { PluginLayoutControlsDisplay } from '../../mol-plugin/layout';
+import { BuiltInTrajectoryFormat } from '../../mol-plugin-state/formats/trajectory';
+import { Structure } from '../../mol-model/structure';
+import { PluginStateTransform, PluginStateObject as PSO } from '../../mol-plugin-state/objects';
+import { ParamDefinition as PD } from '../../mol-util/param-definition';
+import { Task } from '../../mol-task';
+import { StateObject } from '../../mol-state';
+import { ViewportComponent, StructurePreset, ShowButtons } from './viewport';
+import { PluginBehaviors } from '../../mol-plugin/behavior';
+import { ColorNames } from '../../mol-util/color/names';
+import { Color } from '../../mol-util/color';
+
+require('mol-plugin-ui/skin/light.scss');
+
+export { PLUGIN_VERSION as version } from '../../mol-plugin/version';
+export { setProductionMode, setDebugMode } from '../../mol-util/debug';
+
+const DefaultViewerOptions = {
+    extensions: ObjectKeys({}),
+    layoutIsExpanded: true,
+    layoutShowControls: true,
+    layoutShowRemoteState: true,
+    layoutControlsDisplay: 'reactive' as PluginLayoutControlsDisplay,
+    layoutShowSequence: true,
+    layoutShowLog: true,
+    layoutShowLeftPanel: true,
+
+    viewportShowExpand: PluginConfig.Viewport.ShowExpand.defaultValue,
+    viewportShowControls: PluginConfig.Viewport.ShowControls.defaultValue,
+    viewportShowSettings: PluginConfig.Viewport.ShowSettings.defaultValue,
+    viewportShowSelectionMode: PluginConfig.Viewport.ShowSelectionMode.defaultValue,
+    viewportShowAnimation: PluginConfig.Viewport.ShowAnimation.defaultValue,
+    pluginStateServer: PluginConfig.State.DefaultServer.defaultValue,
+    volumeStreamingServer: PluginConfig.VolumeStreaming.DefaultServer.defaultValue,
+    pdbProvider: PluginConfig.Download.DefaultPdbProvider.defaultValue,
+    emdbProvider: PluginConfig.Download.DefaultEmdbProvider.defaultValue,
+};
+
+class Viewer {
+    plugin: PluginContext
+
+    constructor(elementOrId: string | HTMLElement, colors = [Color(0x992211), Color(0xDDDDDD)], showButtons = true) {
+        const o = { ...DefaultViewerOptions, ...{
+            layoutIsExpanded: false,
+            layoutShowControls: false,
+            layoutShowRemoteState: false,
+            layoutShowSequence: true,
+            layoutShowLog: false,
+            layoutShowLeftPanel: true,
+
+            viewportShowExpand: true,
+            viewportShowControls: false,
+            viewportShowSettings: false,
+            viewportShowSelectionMode: false,
+            viewportShowAnimation: false,
+        } };
+        const defaultSpec = DefaultPluginSpec();
+
+        const spec: PluginSpec = {
+            actions: [...defaultSpec.actions],
+            behaviors: [
+                PluginSpec.Behavior(PluginBehaviors.Representation.HighlightLoci, { mark: false }),
+                PluginSpec.Behavior(PluginBehaviors.Representation.DefaultLociLabelProvider),
+                PluginSpec.Behavior(PluginBehaviors.Camera.FocusLoci),
+
+                PluginSpec.Behavior(PluginBehaviors.CustomProps.StructureInfo),
+                PluginSpec.Behavior(PluginBehaviors.CustomProps.Interactions),
+                PluginSpec.Behavior(PluginBehaviors.CustomProps.SecondaryStructure),
+            ],
+            animations: [...defaultSpec.animations || []],
+            customParamEditors: defaultSpec.customParamEditors,
+            layout: {
+                initial: {
+                    isExpanded: o.layoutIsExpanded,
+                    showControls: o.layoutShowControls,
+                    controlsDisplay: o.layoutControlsDisplay,
+                },
+                controls: {
+                    ...defaultSpec.layout && defaultSpec.layout.controls,
+                    top: o.layoutShowSequence ? undefined : 'none',
+                    bottom: o.layoutShowLog ? undefined : 'none',
+                    left: o.layoutShowLeftPanel ? undefined : 'none',
+                }
+            },
+            components: {
+                ...defaultSpec.components,
+                remoteState: o.layoutShowRemoteState ? 'default' : 'none',
+                viewport: {
+                    view: ViewportComponent
+                }
+            },
+            config: [
+                [PluginConfig.Viewport.ShowExpand, o.viewportShowExpand],
+                [PluginConfig.Viewport.ShowControls, o.viewportShowControls],
+                [PluginConfig.Viewport.ShowSettings, o.viewportShowSettings],
+                [PluginConfig.Viewport.ShowSelectionMode, o.viewportShowSelectionMode],
+                [PluginConfig.Viewport.ShowAnimation, o.viewportShowAnimation],
+                [PluginConfig.State.DefaultServer, o.pluginStateServer],
+                [PluginConfig.State.CurrentServer, o.pluginStateServer],
+                [PluginConfig.VolumeStreaming.DefaultServer, o.volumeStreamingServer],
+                [PluginConfig.Download.DefaultPdbProvider, o.pdbProvider],
+                [PluginConfig.Download.DefaultEmdbProvider, o.emdbProvider],
+                [ShowButtons, showButtons]
+            ]
+        };
+
+        const element = typeof elementOrId === 'string'
+            ? document.getElementById(elementOrId)
+            : elementOrId;
+        if (!element) throw new Error(`Could not get element with id '${elementOrId}'`);
+        this.plugin = createPlugin(element, spec);
+
+        (this.plugin.customState as any) = {
+            colorPalette: {
+                name: 'colors',
+                params: { list: { colors } }
+            }
+        };
+
+        this.plugin.behaviors.canvas3d.initialized.subscribe(v => {
+            if (v) {
+                PluginCommands.Canvas3D.SetSettings(this.plugin, { settings: {
+                    renderer: {
+                        ...this.plugin.canvas3d!.props.renderer,
+                        backgroundColor: ColorNames.white,
+                    },
+                    camera: {
+                        ...this.plugin.canvas3d!.props.camera,
+                        helper: { axes: { name: 'off', params: {} } }
+                    }
+                } });
+            }
+        });
+    }
+
+    async loadStructuresFromUrlsAndMerge(sources: { url: string, format: BuiltInTrajectoryFormat, isBinary?: boolean }[]) {
+        const structures: { ref: string }[] = [];
+        for (const { url, format, isBinary } of sources) {
+            const data = await this.plugin.builders.data.download({ url, isBinary });
+            const trajectory = await this.plugin.builders.structure.parseTrajectory(data, format);
+            const model = await this.plugin.builders.structure.createModel(trajectory);
+            const modelProperties = await this.plugin.builders.structure.insertModelProperties(model);
+            const structure = await this.plugin.builders.structure.createStructure(modelProperties || model);
+            const structureProperties = await this.plugin.builders.structure.insertStructureProperties(structure);
+
+            structures.push({ ref: structureProperties?.ref || structure.ref });
+        }
+
+        // remove current structuresfrom hierarchy as they will be merged
+        // TODO only works with using loadStructuresFromUrlsAndMerge once
+        //      need some more API metho to work with the hierarchy
+        this.plugin.managers.structure.hierarchy.updateCurrent(this.plugin.managers.structure.hierarchy.current.structures, 'remove');
+
+        const dependsOn = structures.map(({ ref }) => ref);
+        const data = this.plugin.state.data.build().toRoot().apply(MergeStructures, { structures }, { dependsOn });
+        const structure = await data.commit();
+        const structureProperties = await this.plugin.builders.structure.insertStructureProperties(structure);
+        this.plugin.behaviors.canvas3d.initialized.subscribe(async v => {
+            await this.plugin.builders.structure.representation.applyPreset(structureProperties || structure, StructurePreset);
+        });
+    }
+}
+
+type MergeStructures = typeof MergeStructures
+const MergeStructures = PluginStateTransform.BuiltIn({
+    name: 'merge-structures',
+    display: { name: 'Merge Structures', description: 'Merge Structure' },
+    from: PSO.Root,
+    to: PSO.Molecule.Structure,
+    params: {
+        structures: PD.ObjectList({
+            ref: PD.Text('')
+        }, ({ ref }) => ref, { isHidden: true })
+    }
+})({
+    apply({ params, dependencies }) {
+        return Task.create('Merge Structures', async ctx => {
+            if (params.structures.length === 0) return StateObject.Null;
+
+            const first = dependencies![params.structures[0].ref].data as Structure;
+            const builder = Structure.Builder({ masterModel: first.models[0] });
+            for (const { ref } of params.structures) {
+                const s = dependencies![ref].data as Structure;
+                for (const unit of s.units) {
+                    // TODO invariantId
+                    builder.addUnit(unit.kind, unit.model, unit.conformation.operator, unit.elements, unit.traits);
+                }
+            }
+
+            const structure = builder.getStructure();
+            return new PSO.Molecule.Structure(structure, { label: 'Merged Structure' });
+        });
+    }
+});
+
+(window as any).DockingViewer = Viewer;
+export { Viewer as DockingViewer };
--- a/src/apps/docking-viewer/viewport.tsx
+++ b/src/apps/docking-viewer/viewport.tsx
@@ -0,0 +1,276 @@
+/**
+ * Copyright (c) 2020 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * @author Alexander Rose <alexander.rose@weirdbyte.de>
+ */
+
+import * as React from 'react';
+import { PluginUIComponent } from '../../mol-plugin-ui/base';
+import { Viewport, ViewportControls } from '../../mol-plugin-ui/viewport';
+import { BackgroundTaskProgress } from '../../mol-plugin-ui/task';
+import { LociLabels } from '../../mol-plugin-ui/controls';
+import { Toasts } from '../../mol-plugin-ui/toast';
+import { Button } from '../../mol-plugin-ui/controls/common';
+import { StructureRepresentationPresetProvider, presetStaticComponent } from '../../mol-plugin-state/builder/structure/representation-preset';
+import { StateObjectRef } from '../../mol-state';
+import { StructureSelectionQueries, StructureSelectionQuery } from '../../mol-plugin-state/helpers/structure-selection-query';
+import { MolScriptBuilder as MS } from '../../mol-script/language/builder';
+import { InteractionsRepresentationProvider } from '../../mol-model-props/computed/representations/interactions';
+import { InteractionTypeColorThemeProvider } from '../../mol-model-props/computed/themes/interaction-type';
+import { PluginCommands } from '../../mol-plugin/commands';
+import { PluginContext } from '../../mol-plugin/context';
+import { StructureRef } from '../../mol-plugin-state/manager/structure/hierarchy-state';
+import { Color } from '../../mol-util/color';
+import { PluginConfig } from '../../mol-plugin/config';
+
+function shinyStyle(plugin: PluginContext) {
+    return PluginCommands.Canvas3D.SetSettings(plugin, { settings: {
+        renderer: {
+            ...plugin.canvas3d!.props.renderer,
+            style: { name: 'plastic', params: {} },
+        },
+        postprocessing: {
+            ...plugin.canvas3d!.props.postprocessing,
+            occlusion: { name: 'off', params: {} },
+            outline: { name: 'off', params: {} }
+        }
+    } });
+}
+
+function occlusionStyle(plugin: PluginContext) {
+    return PluginCommands.Canvas3D.SetSettings(plugin, { settings: {
+        renderer: {
+            ...plugin.canvas3d!.props.renderer,
+            style: { name: 'flat', params: {} }
+        },
+        postprocessing: {
+            ...plugin.canvas3d!.props.postprocessing,
+            occlusion: { name: 'on', params: {
+                samples: 64,
+                radius: 8,
+                bias: 1.0,
+                blurKernelSize: 13
+            } },
+            outline: { name: 'on', params: {
+                scale: 1.0,
+                threshold: 0.33
+            } }
+        }
+    } });
+}
+
+const ligandPlusSurroundings = StructureSelectionQuery('Surrounding Residues (5 \u212B) of Ligand plus Ligand itself', MS.struct.modifier.union([
+    MS.struct.modifier.includeSurroundings({
+        0: StructureSelectionQueries.ligand.expression,
+        radius: 5,
+        'as-whole-residues': true
+    })
+]));
+
+const ligandSurroundings = StructureSelectionQuery('Surrounding Residues (5 \u212B) of Ligand', MS.struct.modifier.union([
+    MS.struct.modifier.exceptBy({
+        0: ligandPlusSurroundings.expression,
+        by: StructureSelectionQueries.ligand.expression
+    })
+]));
+
+const PresetParams = {
+    ...StructureRepresentationPresetProvider.CommonParams,
+};
+
+
+
+export const StructurePreset = StructureRepresentationPresetProvider({
+    id: 'preset-structure',
+    display: { name: 'Structure' },
+    params: () => PresetParams,
+    async apply(ref, params, plugin) {
+        const structureCell = StateObjectRef.resolveAndCheck(plugin.state.data, ref);
+        if (!structureCell) return {};
+
+        const components = {
+            ligand: await presetStaticComponent(plugin, structureCell, 'ligand'),
+            polymer: await presetStaticComponent(plugin, structureCell, 'polymer'),
+        };
+
+        const { update, builder, typeParams } = StructureRepresentationPresetProvider.reprBuilder(plugin, params);
+        const representations = {
+            ligand: builder.buildRepresentation(update, components.ligand, { type: 'ball-and-stick', typeParams: { ...typeParams, sizeFactor: 0.35 }, color: 'element-symbol', colorParams: { carbonColor: { name: 'element-symbol', params: {} } } }, { tag: 'ligand' }),
+            polymer: builder.buildRepresentation(update, components.polymer, { type: 'cartoon', typeParams: { ...typeParams }, color: 'chain-id', colorParams: { palette: (plugin.customState as any).colorPalette } }, { tag: 'polymer' }),
+        };
+
+        await update.commit({ revertOnError: true });
+        await shinyStyle(plugin);
+        plugin.managers.interactivity.setProps({ granularity: 'residue' });
+
+        return { components, representations };
+    }
+});
+
+export const IllustrativePreset = StructureRepresentationPresetProvider({
+    id: 'preset-illustrative',
+    display: { name: 'Illustrative' },
+    params: () => PresetParams,
+    async apply(ref, params, plugin) {
+        const structureCell = StateObjectRef.resolveAndCheck(plugin.state.data, ref);
+        if (!structureCell) return {};
+
+        const components = {
+            ligand: await presetStaticComponent(plugin, structureCell, 'ligand'),
+            polymer: await presetStaticComponent(plugin, structureCell, 'polymer'),
+        };
+
+        const { update, builder, typeParams } = StructureRepresentationPresetProvider.reprBuilder(plugin, params);
+        const representations = {
+            ligand: builder.buildRepresentation(update, components.ligand, { type: 'spacefill', typeParams: { ...typeParams }, color: 'element-symbol', colorParams: { carbonColor: { name: 'element-symbol', params: {} } } }, { tag: 'ligand' }),
+            polymer: builder.buildRepresentation(update, components.polymer, { type: 'spacefill', typeParams: { ...typeParams }, color: 'illustrative', colorParams: { palette: (plugin.customState as any).colorPalette } }, { tag: 'polymer' }),
+        };
+
+        await update.commit({ revertOnError: true });
+        await occlusionStyle(plugin);
+        plugin.managers.interactivity.setProps({ granularity: 'residue' });
+
+        return { components, representations };
+    }
+});
+
+const SurfacePreset = StructureRepresentationPresetProvider({
+    id: 'preset-surface',
+    display: { name: 'Surface' },
+    params: () => PresetParams,
+    async apply(ref, params, plugin) {
+        const structureCell = StateObjectRef.resolveAndCheck(plugin.state.data, ref);
+        const structure = structureCell?.obj?.data;
+        if (!structureCell || !structure) return {};
+
+        const components = {
+            ligand: await presetStaticComponent(plugin, structureCell, 'ligand'),
+            polymer: await presetStaticComponent(plugin, structureCell, 'polymer'),
+        };
+
+        const { update, builder, typeParams } = StructureRepresentationPresetProvider.reprBuilder(plugin, params);
+        const representations = {
+            ligand: builder.buildRepresentation(update, components.ligand, { type: 'ball-and-stick', typeParams: { ...typeParams, sizeFactor: 0.26 }, color: 'element-symbol', colorParams: { carbonColor: { name: 'element-symbol', params: {} } } }, { tag: 'ligand' }),
+            polymer: builder.buildRepresentation(update, components.polymer, { type: 'molecular-surface', typeParams: { ...typeParams, quality: 'custom', resolution: 0.5, doubleSided: true }, color: 'partial-charge' }, { tag: 'polymer' }),
+        };
+
+        await update.commit({ revertOnError: true });
+        await shinyStyle(plugin);
+        plugin.managers.interactivity.setProps({ granularity: 'residue' });
+
+        return { components, representations };
+    }
+});
+
+const PocketPreset = StructureRepresentationPresetProvider({
+    id: 'preset-pocket',
+    display: { name: 'Pocket' },
+    params: () => PresetParams,
+    async apply(ref, params, plugin) {
+        const structureCell = StateObjectRef.resolveAndCheck(plugin.state.data, ref);
+        const structure = structureCell?.obj?.data;
+        if (!structureCell || !structure) return {};
+
+        const components = {
+            ligand: await presetStaticComponent(plugin, structureCell, 'ligand'),
+            surroundings: await plugin.builders.structure.tryCreateComponentFromSelection(structureCell, ligandSurroundings, `surroundings`),
+        };
+
+        const { update, builder, typeParams } = StructureRepresentationPresetProvider.reprBuilder(plugin, params);
+        const representations = {
+            ligand: builder.buildRepresentation(update, components.ligand, { type: 'ball-and-stick', typeParams: { ...typeParams, sizeFactor: 0.26 }, color: 'element-symbol', colorParams: { carbonColor: { name: 'element-symbol', params: {} } } }, { tag: 'ligand' }),
+            surroundings: builder.buildRepresentation(update, components.surroundings, { type: 'molecular-surface', typeParams: { ...typeParams, includeParent: true, quality: 'custom', resolution: 0.2, doubleSided: true }, color: 'partial-charge' }, { tag: 'surroundings' }),
+        };
+
+        await update.commit({ revertOnError: true });
+        await shinyStyle(plugin);
+        plugin.managers.interactivity.setProps({ granularity: 'element' });
+
+        return { components, representations };
+    }
+});
+
+const InteractionsPreset = StructureRepresentationPresetProvider({
+    id: 'preset-interactions',
+    display: { name: 'Interactions' },
+    params: () => PresetParams,
+    async apply(ref, params, plugin) {
+        const structureCell = StateObjectRef.resolveAndCheck(plugin.state.data, ref);
+        const structure = structureCell?.obj?.data;
+        if (!structureCell || !structure) return {};
+
+        const components = {
+            ligand: await presetStaticComponent(plugin, structureCell, 'ligand'),
+            surroundings: await plugin.builders.structure.tryCreateComponentFromSelection(structureCell, ligandSurroundings, `surroundings`),
+            interactions: await plugin.builders.structure.tryCreateComponentFromSelection(structureCell, ligandPlusSurroundings, `interactions`)
+        };
+
+        const { update, builder, typeParams } = StructureRepresentationPresetProvider.reprBuilder(plugin, params);
+        const representations = {
+            ligand: builder.buildRepresentation(update, components.ligand, { type: 'ball-and-stick', typeParams: { ...typeParams, sizeFactor: 0.3 }, color: 'element-symbol', colorParams: { carbonColor: { name: 'element-symbol', params: {} } } }, { tag: 'ligand' }),
+            ballAndStick: builder.buildRepresentation(update, components.surroundings, { type: 'ball-and-stick', typeParams: { ...typeParams, sizeFactor: 0.1, sizeAspectRatio: 1 }, color: 'element-symbol', colorParams: { carbonColor: { name: 'element-symbol', params: {} } } }, { tag: 'ball-and-stick' }),
+            interactions: builder.buildRepresentation(update, components.interactions, { type: InteractionsRepresentationProvider, typeParams: { ...typeParams }, color: InteractionTypeColorThemeProvider }, { tag: 'interactions' }),
+            label: builder.buildRepresentation(update, components.surroundings, { type: 'label', typeParams: { ...typeParams, background: false, borderWidth: 0.1 }, color: 'uniform', colorParams: { value: Color(0x000000) } }, { tag: 'label' }),
+        };
+
+        await update.commit({ revertOnError: true });
+        await shinyStyle(plugin);
+        plugin.managers.interactivity.setProps({ granularity: 'element' });
+
+        return { components, representations };
+    }
+});
+
+export const ShowButtons = PluginConfig.item('showButtons', true);
+
+export class ViewportComponent extends PluginUIComponent {
+    async _set(structures: readonly StructureRef[], preset: StructureRepresentationPresetProvider) {
+        await this.plugin.managers.structure.component.clear(structures);
+        await this.plugin.managers.structure.component.applyPreset(structures, preset);
+    }
+
+    set = async (preset: StructureRepresentationPresetProvider) => {
+        await this._set(this.plugin.managers.structure.hierarchy.selection.structures, preset);
+    }
+
+    structurePreset = () => this.set(StructurePreset);
+    illustrativePreset = () => this.set(IllustrativePreset);
+    surfacePreset = () => this.set(SurfacePreset);
+    pocketPreset = () => this.set(PocketPreset);
+    interactionsPreset = () => this.set(InteractionsPreset);
+
+    get showButtons () {
+        return this.plugin.config.get(ShowButtons);
+    }
+
+    render() {
+        const VPControls = this.plugin.spec.components?.viewport?.controls || ViewportControls;
+
+        return <>
+            <Viewport />
+            {this.showButtons && <div className='msp-viewport-top-left-controls'>
+                <div style={{ marginBottom: '4px' }}>
+                    <Button onClick={this.structurePreset} >Structure</Button>
+                </div>
+                <div style={{ marginBottom: '4px' }}>
+                    <Button onClick={this.illustrativePreset}>Illustrative</Button>
+                </div>
+                <div style={{ marginBottom: '4px' }}>
+                    <Button onClick={this.surfacePreset}>Surface</Button>
+                </div>
+                {/* <div style={{ marginBottom: '4px' }}>
+                    <Button onClick={this.pocketPreset}>Pocket</Button>
+                </div> */}
+                <div style={{ marginBottom: '4px' }}>
+                    <Button onClick={this.interactionsPreset}>Interactions</Button>
+                </div>
+            </div>}
+            <VPControls />
+            <BackgroundTaskProgress />
+            <div className='msp-highlight-toast-wrapper'>
+                <LociLabels />
+                <Toasts />
+            </div>
+        </>;
+    }
+}
--- a/src/apps/viewer/embedded.html
+++ b/src/apps/viewer/embedded.html
@@ -0,0 +1,43 @@
+<!DOCTYPE html>
+<html lang="en">
+    <head>
+        <meta charset="utf-8" />
+        <meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
+        <link rel="icon" href="./favicon.ico" type="image/x-icon">
+        <title>Embedded Mol* Viewer</title>
+        <style>
+            #app {
+                position: absolute;
+                left: 100px;
+                top: 100px;
+                width: 800px;
+                height: 600px;
+            }
+        </style>
+        <link rel="stylesheet" type="text/css" href="molstar.css" />
+    </head>
+    <body>
+        <div id="app"></div>
+        <script type="text/javascript" src="./molstar.js"></script>
+        <script type="text/javascript">
+            var viewer = new molstar.Viewer('app', {
+                layoutIsExpanded: false,
+                layoutShowControls: false,
+                layoutShowRemoteState: false,
+                layoutShowSequence: true,
+                layoutShowLog: false,
+                layoutShowLeftPanel: true,
+
+                viewportShowExpand: true,
+                viewportShowSelectionMode: false,
+                viewportShowAnimation: false,
+
+                pdbProvider: 'rcsb',
+                emdbProvider: 'rcsb',
+            });
+            viewer.loadPdb('7bv2');
+            viewer.loadEmdb('EMD-30210', { detail: 6 });
+            // viewer.loadAllModelsOrAssemblyFromUrl('https://cs.litemol.org/5ire/full', 'mmcif', false, { representationParams: { theme: { globalName: 'operator-name' } } })
+        </script>
+    </body>
+</html>
--- a/src/apps/viewer/extensions/cellpack/color.ts
+++ b/src/apps/viewer/extensions/cellpack/color.ts
@@ -1,96 +0,0 @@
-/**
- * Copyright (c) 2020 mol* contributors, licensed under MIT, See LICENSE file for more info.
- *
- * @author Alexander Rose <alexander.rose@weirdbyte.de>
- */
-
-import { ThemeDataContext } from '../../../../mol-theme/theme'
-import { ParamDefinition as PD } from '../../../../mol-util/param-definition'
-import { Color } from '../../../../mol-util/color'
-import { getPalette } from '../../../../mol-util/color/palette'
-import { ColorTheme, LocationColor } from '../../../../mol-theme/color'
-import { ScaleLegend, TableLegend } from '../../../../mol-util/legend'
-import { StructureElement, Bond } from '../../../../mol-model/structure'
-import { Location } from '../../../../mol-model/location';
-import { CellPackInfoProvider } from './property'
-import { distinctColors } from '../../../../mol-util/color/distinct'
-import { Hcl } from '../../../../mol-util/color/spaces/hcl'
-
-
-const DefaultColor = Color(0xCCCCCC)
-const Description = 'Gives every model in a CellPack packing a unique color similar to other models in the packing.'
-
-export const CellPackColorThemeParams = {}
-export type CellPackColorThemeParams = typeof CellPackColorThemeParams
-export function getCellPackColorThemeParams(ctx: ThemeDataContext) {
-    return CellPackColorThemeParams // TODO return copy
-}
-
-export function CellPackColorTheme(ctx: ThemeDataContext, props: PD.Values<CellPackColorThemeParams>): ColorTheme<CellPackColorThemeParams> {
-    let color: LocationColor
-    let legend: ScaleLegend | TableLegend | undefined
-
-    const info = ctx.structure && CellPackInfoProvider.get(ctx.structure).value
-
-    if (ctx.structure && info) {
-        const colors = distinctColors(info.packingsCount)
-        const hcl = Hcl.fromColor(Hcl(), colors[info.packingIndex])
-        const hue = [Math.max(0, hcl[0] - 35), Math.min(360, hcl[0] + 35)] as [number, number]
-
-        const { models } = ctx.structure.root
-
-        let size = 0;
-        for (const m of models) size = Math.max(size, m.trajectoryInfo.size);
-
-        const palette = getPalette(size, { palette: {
-            name: 'generate',
-            params: {
-                hue, chroma: [30, 80], luminance: [15, 85],
-                clusteringStepCount: 50, minSampleCount: 800, maxCount: 75,
-                minLabel: 'Min', maxLabel: 'Max', valueLabel: (i: number) => `${i + 1}`,
-            }
-        }})
-        legend = palette.legend
-        const modelColor = new Map<number, Color>()
-        for (let i = 0, il = models.length; i <il; ++i) {
-            const idx = models[i].trajectoryInfo.index;
-            modelColor.set(models[i].trajectoryInfo.index, palette.color(idx))
-        }
-
-        color = (location: Location): Color => {
-            if (StructureElement.Location.is(location)) {
-                return modelColor.get(location.unit.model.trajectoryInfo.index)!
-            } else if (Bond.isLocation(location)) {
-                return modelColor.get(location.aUnit.model.trajectoryInfo.index)!
-            }
-            return DefaultColor
-        }
-    } else {
-        color = () => DefaultColor
-    }
-
-    return {
-        factory: CellPackColorTheme,
-        granularity: 'instance',
-        color,
-        props,
-        description: Description,
-        legend
-    }
-}
-
-export const CellPackColorThemeProvider: ColorTheme.Provider<CellPackColorThemeParams, 'cellpack'> = {
-    name: 'cellpack',
-    label: 'CellPack',
-    category: ColorTheme.Category.Chain,
-    factory: CellPackColorTheme,
-    getParams: getCellPackColorThemeParams,
-    defaultValues: PD.getDefaultValues(CellPackColorThemeParams),
-    isApplicable: (ctx: ThemeDataContext) => {
-        return (
-            !!ctx.structure && ctx.structure.elementCount > 0 &&
-            ctx.structure.models[0].trajectoryInfo.size > 1 &&
-            !!CellPackInfoProvider.get(ctx.structure).value
-        )
-    }
-}
--- a/src/apps/viewer/extensions/cellpack/curve.ts
+++ b/src/apps/viewer/extensions/cellpack/curve.ts
@@ -1,228 +0,0 @@
-/**
- * Copyright (c) 2019 mol* contributors, licensed under MIT, See LICENSE file for more info.
- *
- * @author Ludovic Autin <autin@scripps.edu>
- * @author Alexander Rose <alexander.rose@weirdbyte.de>
- */
-
-import { Vec3, Quat, Mat4 } from '../../../../mol-math/linear-algebra';
-import { NumberArray } from '../../../../mol-util/type-helpers';
-
-interface Frame {
-    t: Vec3,
-    r: Vec3,
-    s: Vec3,
-}
-
-const a0Tmp = Vec3()
-const a1Tmp = Vec3()
-const a2Tmp = Vec3()
-const a3Tmp = Vec3()
-function CubicInterpolate(out: Vec3, y0: Vec3, y1: Vec3, y2: Vec3, y3: Vec3, mu: number): Vec3 {
-    const mu2 = mu * mu;
-    Vec3.sub(a0Tmp, y3, y2)
-    Vec3.sub(a0Tmp, a0Tmp, y0)
-    Vec3.add(a0Tmp, a0Tmp, y1)
-
-    Vec3.sub(a1Tmp, y0, y1)
-    Vec3.sub(a1Tmp, a1Tmp, a0Tmp)
-
-    Vec3.sub(a2Tmp, y2, y0)
-
-    Vec3.copy(a3Tmp, y1)
-
-    out[0] = a0Tmp[0] * mu * mu2 + a1Tmp[0] * mu2 + a2Tmp[0] * mu + a3Tmp[0]
-    out[1] = a0Tmp[1] * mu * mu2 + a1Tmp[1] * mu2 + a2Tmp[1] * mu + a3Tmp[1]
-    out[2] = a0Tmp[2] * mu * mu2 + a1Tmp[2] * mu2 + a2Tmp[2] * mu + a3Tmp[2]
-
-    return out
-}
-
-const cp0 = Vec3()
-const cp1 = Vec3()
-const cp2 = Vec3()
-const cp3 = Vec3()
-const currentPosition = Vec3()
-function ResampleControlPoints(points: NumberArray, segmentLength: number) {
-    const nP = points.length / 3
-    // insert a point at the end and at the begining
-    // controlPoints.Insert(0, controlPoints[0] + (controlPoints[0] - controlPoints[1]) / 2.0f);
-    // controlPoints.Add(controlPoints[nP - 1] + (controlPoints[nP - 1] - controlPoints[nP - 2]) / 2.0f);
-
-    let resampledControlPoints: Vec3[] = []
-    // resampledControlPoints.Add(controlPoints[0]);
-    // resampledControlPoints.Add(controlPoints[1]);
-
-    let idx = 1
-    // const currentPosition = Vec3.create(points[idx * 3], points[idx * 3 + 1], points[idx * 3 + 2])
-    Vec3.fromArray(currentPosition, points, idx * 3)
-
-    let lerpValue = 0.0
-
-    // Normalize the distance between control points
-    while (true) {
-        if (idx + 2 >= nP) break
-        Vec3.fromArray(cp0, points, (idx - 1) * 3)
-        Vec3.fromArray(cp1, points, idx * 3)
-        Vec3.fromArray(cp2, points, (idx + 1) * 3)
-        Vec3.fromArray(cp3, points, (idx + 2) * 3)
-        // const cp0 = Vec3.create(points[(idx-1)*3], points[(idx-1)*3+1], points[(idx-1)*3+2]) // controlPoints[currentPointId - 1];
-        // const cp1 = Vec3.create(points[idx*3], points[idx*3+1], points[idx*3+2]) // controlPoints[currentPointId];
-        // const cp2 = Vec3.create(points[(idx+1)*3], points[(idx+1)*3+1], points[(idx+1)*3+2]) // controlPoints[currentPointId + 1];
-        // const cp3 = Vec3.create(points[(idx+2)*3], points[(idx+2)*3+1], points[(idx+2)*3+2]); // controlPoints[currentPointId + 2];
-        let found = false
-        for (; lerpValue <= 1; lerpValue += 0.01) {
-            // lerp?slerp
-            // let candidate:Vec3 = Vec3.lerp(Vec3.zero(), cp0, cp1, lerpValue);
-            // const candidate:Vec3 = Vec3.bezier(Vec3.zero(), cp0, cp1, cp2, cp3, lerpValue);
-            const candidate = CubicInterpolate(Vec3(), cp0, cp1, cp2, cp3, lerpValue)
-            const d = Vec3.distance(currentPosition, candidate);
-            if (d > segmentLength) {
-                resampledControlPoints.push(candidate)
-                Vec3.copy(currentPosition, candidate)
-                found = true
-                break
-            }
-        }
-        if (!found) {
-            lerpValue = 0
-            idx += 1
-        }
-    }
-    return resampledControlPoints
-}
-
-
-const prevV = Vec3()
-const tmpV1 = Vec3()
-const tmpV2 = Vec3()
-const tmpV3 = Vec3()
-
-// easier to align to theses normals
-function GetSmoothNormals(points: Vec3[]) {
-    const nP: number = points.length;
-    const smoothNormals: Vec3[] = []
-    if (points.length < 3) {
-        for (let i = 0; i < points.length; ++i)
-            smoothNormals.push(Vec3.normalize(Vec3(), points[i]))
-        return smoothNormals;
-    }
-    let p0 = points[0]
-    let p1 = points[1]
-    let p2 = points[2]
-    const p21 = Vec3.sub(tmpV1, p2, p1)
-    const p01 =  Vec3.sub(tmpV2, p0, p1)
-    const p0121 = Vec3.cross(tmpV3, p01, p21)
-    Vec3.normalize(prevV, p0121)
-    smoothNormals.push(Vec3.clone(prevV))
-    for (let i = 1; i < points.length - 1; ++i) {
-        p0 = points[i - 1]
-        p1 = points[i]
-        p2 = points[i + 1]
-        const t = Vec3.normalize(tmpV1, Vec3.sub(tmpV1, p2 , p0))
-        const b = Vec3.normalize(tmpV2, Vec3.cross(tmpV2, t, prevV))
-        const n = Vec3.normalize(Vec3(), Vec3.cross(tmpV3, t, b))
-        Vec3.negate(n, n)
-        Vec3.copy(prevV, n)
-        smoothNormals.push(n)
-    }
-    const last = Vec3()
-    Vec3.normalize(last, Vec3.cross(last,
-        Vec3.sub(tmpV1, points[nP - 3], points[nP-2]),
-        Vec3.sub(tmpV2, points[nP-2] , points[nP-1]))
-    )
-    smoothNormals.push(last)
-    return smoothNormals;
-}
-
-const frameTmpV1 = Vec3()
-const frameTmpV2 = Vec3()
-const frameTmpV3 = Vec3()
-
-function getFrame(reference: Vec3, tangent: Vec3) {
-    const t = Vec3.normalize(Vec3(), tangent);
-    // make reference vector orthogonal to tangent
-    const proj_r_to_t = Vec3.scale(
-        frameTmpV1, tangent, Vec3.dot(reference, tangent) / Vec3.dot(tangent, tangent)
-    )
-    const r = Vec3.normalize(Vec3(), Vec3.sub(frameTmpV2, reference, proj_r_to_t))
-    // make bitangent vector orthogonal to the others
-    const s = Vec3.normalize(Vec3(), Vec3.cross(frameTmpV3, t, r))
-    return { t, r, s }
-}
-
-const mfTmpV1 = Vec3()
-const mfTmpV2 = Vec3()
-const mfTmpV3 = Vec3()
-const mfTmpV4 = Vec3()
-const mfTmpV5 = Vec3()
-const mfTmpV6 = Vec3()
-const mfTmpV7 = Vec3()
-const mfTmpV8 = Vec3()
-const mfTmpV9 = Vec3()
-
-// easier to align to theses normals
-// https://github.com/bzamecnik/gpg/blob/master/rotation-minimizing-frame/rmf.py
-function GetMiniFrame(points: Vec3[], normals: Vec3[]) {
-    const frames: Frame[] = [];
-    const t0 = Vec3.normalize(mfTmpV1, Vec3.sub(mfTmpV1, points[1], points[0]))
-    frames.push(getFrame(normals[0], t0))
-
-    for (let i = 0; i< points.length-2; ++i) {
-        const t2 = Vec3.normalize(mfTmpV1, Vec3.sub(mfTmpV1, points[i+2], points[i+1]))
-        const v1 = Vec3.sub(mfTmpV2, points[i + 1], points[i]) // this is tangeant
-        const c1 = Vec3.dot(v1, v1)
-        // compute r_i^L = R_1 * r_i
-        const v1r = Vec3.scale(mfTmpV3, v1, (2.0 / c1) * Vec3.dot(v1, frames[i].r))
-        const ref_L_i = Vec3.sub(mfTmpV4, frames[i].r, v1r)
-        // compute t_i^L = R_1 * t_i
-        const v1t = Vec3.scale(mfTmpV5, v1, (2.0 / c1) * Vec3.dot(v1, frames[i].t))
-        const tan_L_i = Vec3.sub(mfTmpV6, frames[i].t, v1t)
-        // # compute reflection vector of R_2
-        const v2 =  Vec3.sub(mfTmpV7, t2 , tan_L_i)
-        const c2 = Vec3.dot(v2, v2)
-        // compute r_(i+1) = R_2 * r_i^L
-        const v2l = Vec3.scale(mfTmpV8, v1, (2.0/c2) * Vec3.dot(v2, ref_L_i))
-        const ref_next = Vec3.sub(mfTmpV9, ref_L_i, v2l) // ref_L_i - (2 / c2) * v2.dot(ref_L_i) * v2
-        frames.push(getFrame(ref_next, t2)) // frames.append(Frame(ref_next, tangents[i+1]))
-    }
-    return frames;
-}
-
-const rpTmpVec1 = Vec3()
-
-export function getMatFromResamplePoints(points: NumberArray) {
-    const segmentLength = 3.4
-    const new_points = ResampleControlPoints(points, 3.4)
-    const npoints = new_points.length
-    const new_normal = GetSmoothNormals(new_points)
-    const frames = GetMiniFrame(new_points, new_normal)
-    const limit = npoints
-    const transforms: Mat4[] = []
-    const pti = Vec3.copy(rpTmpVec1, new_points[0]);
-    // console.log(new_points.length)
-    // console.log(points.length/3)
-    // console.log(limit)
-    // console.log(segmentLength)
-    for (let i = 0; i<npoints-2; ++i) {
-        const pti1: Vec3 = new_points[i+1] // Vec3.create(points[(i+1)*3],points[(i+1)*3+1],points[(i+1)*3+2]);
-        const d = Vec3.distance(pti, pti1)
-        if (d >= segmentLength) {
-            // use twist or random?
-            const quat = Quat.rotationTo(Quat.zero(), Vec3.create(0, 0, 1), frames[i].t) // Quat.rotationTo(Quat.zero(), Vec3.create(0,0,1),new_normal[i]);//Quat.rotationTo(Quat.zero(), Vec3.create(0,0,1),direction);new_normal
-            const rq = Quat.setAxisAngle(Quat.zero(), frames[i].t, Math.random()*3.60 ) // Quat.setAxisAngle(Quat.zero(),direction, Math.random()*3.60 );//Quat.identity();//
-            const m = Mat4.fromQuat(Mat4.zero(), Quat.multiply(Quat.zero(), rq, quat)) // Mat4.fromQuat(Mat4.zero(),Quat.multiply(Quat.zero(),quat1,quat2));//Mat4.fromQuat(Mat4.zero(),quat);//Mat4.identity();//Mat4.fromQuat(Mat4.zero(),Quat.multiply(Quat.zero(),rq,quat));
-            // let pos:Vec3 = Vec3.add(Vec3.zero(),pti1,pti)
-            // pos = Vec3.scale(pos,pos,1.0/2.0);
-            // Vec3.makeRotation(Mat4.zero(),Vec3.create(0,0,1),frames[i].t);//
-            Mat4.setTranslation(m, pti1)
-            // let m2:Mat4 = GetTubePropertiesMatrix(pti,pti1);
-            // let q:Quat = Quat.rotationTo(Quat.zero(), Vec3.create(0,1,0),Vec3.create(0,0,1))
-            // m2=Mat4.mul(Mat4.identity(),Mat4.fromQuat(Mat4.zero(),q),m2);
-            transforms.push(m)
-            Vec3.copy(pti, pti1)
-        }
-        if (transforms.length >= limit) break
-    }
-    return transforms
-}
--- a/src/apps/viewer/extensions/cellpack/data.ts
+++ b/src/apps/viewer/extensions/cellpack/data.ts
@@ -1,62 +0,0 @@
-/**
- * Copyright (c) 2019 mol* contributors, licensed under MIT, See LICENSE file for more info.
- *
- * @author Alexander Rose <alexander.rose@weirdbyte.de>
- */
-
-import { Vec3, Quat } from '../../../../mol-math/linear-algebra';
-
-export interface CellPack {
-    cell: Cell
-    packings: CellPacking[]
-}
-
-export interface CellPacking {
-    name: string,
-    location: 'surface' | 'interior' | 'cytoplasme',
-    ingredients: Packing['ingredients']
-}
-
-//
-
-export interface Cell {
-    recipe: Recipe
-    cytoplasme?: Packing
-    compartments?: { [key: string]: Compartment }
-}
-
-export interface Recipe {
-    setupfile: string
-    /** First entry is name, secound is path: [name: string, path: string][] */
-    paths: [string, string][]
-    version: string
-    name: string
-}
-
-export interface Compartment {
-    surface?: Packing
-    interior?: Packing
-}
-
-export interface Packing {
-    ingredients: { [key: string]: Ingredient }
-}
-
-export interface Ingredient {
-    source: IngredientSource
-    results: [Vec3, Quat][]
-    name: string
-    positions?: [Vec3[]] // why wrapped in an extra array?
-    radii?: [number[]] // why wrapped in an extra array?
-
-    /** Number of `curveX` properties in the object where `X` is a 0-indexed number */
-    nbCurve?: number
-    /** Curve properties are Vec3[] but that is not expressable in TypeScript */
-    [curveX: string]: unknown
-}
-
-export interface IngredientSource {
-    pdb: string
-    transform: { center: boolean, translate?: Vec3 }
-    biomt?: boolean
-}
--- a/src/apps/viewer/extensions/cellpack/model.ts
+++ b/src/apps/viewer/extensions/cellpack/model.ts
@@ -1,402 +0,0 @@
-/**
- * Copyright (c) 2019-2020 mol* contributors, licensed under MIT, See LICENSE file for more info.
- *
- * @author Alexander Rose <alexander.rose@weirdbyte.de>
- */
-
-import { StateAction, StateBuilder, StateTransformer, State } from '../../../../mol-state';
-import { PluginContext } from '../../../../mol-plugin/context';
-import { PluginStateObject as PSO } from '../../../../mol-plugin-state/objects';
-import { ParamDefinition as PD } from '../../../../mol-util/param-definition';
-import { Ingredient, CellPacking } from './data';
-import { getFromPdb, getFromCellPackDB } from './util';
-import { Model, Structure, StructureSymmetry, StructureSelection, QueryContext, Unit } from '../../../../mol-model/structure';
-import { trajectoryFromMmCIF, MmcifFormat } from '../../../../mol-model-formats/structure/mmcif';
-import { trajectoryFromPDB } from '../../../../mol-model-formats/structure/pdb';
-import { Mat4, Vec3, Quat } from '../../../../mol-math/linear-algebra';
-import { SymmetryOperator } from '../../../../mol-math/geometry';
-import { Task, RuntimeContext } from '../../../../mol-task';
-import { StateTransforms } from '../../../../mol-plugin-state/transforms';
-import { ParseCellPack, StructureFromCellpack, DefaultCellPackBaseUrl } from './state';
-import { MolScriptBuilder as MS } from '../../../../mol-script/language/builder';
-import { getMatFromResamplePoints } from './curve';
-import { compile } from '../../../../mol-script/runtime/query/compiler';
-import { CifCategory, CifField } from '../../../../mol-io/reader/cif';
-import { mmCIF_Schema } from '../../../../mol-io/reader/cif/schema/mmcif';
-import { Column } from '../../../../mol-data/db';
-import { createModels } from '../../../../mol-model-formats/structure/basic/parser';
-import { CellpackPackingPreset, CellpackMembranePreset } from './preset';
-import { AjaxTask } from '../../../../mol-util/data-source';
-import { CellPackInfoProvider } from './property';
-import { CellPackColorThemeProvider } from './color';
-
-function getCellPackModelUrl(fileName: string, baseUrl: string) {
-    return `${baseUrl}/results/${fileName}`
-}
-
-async function getModel(id: string, baseUrl: string) {
-    let model: Model;
-    if (id.match(/^[1-9][a-zA-Z0-9]{3,3}$/i)) {
-        // return
-        const cif = await getFromPdb(id)
-        model = (await trajectoryFromMmCIF(cif).run())[0]
-    } else {
-        const pdb = await getFromCellPackDB(id, baseUrl)
-        model = (await trajectoryFromPDB(pdb).run())[0]
-    }
-    return model
-}
-
-async function getStructure(model: Model, props: { assembly?: string } = {}) {
-    let structure = Structure.ofModel(model)
-    const { assembly } = props
-
-    if (assembly) {
-        structure = await StructureSymmetry.buildAssembly(structure, assembly).run()
-    }
-
-    const query = MS.struct.modifier.union([
-        MS.struct.generator.atomGroups({
-            'entity-test': MS.core.rel.eq([MS.ammp('entityType'), 'polymer'])
-        })
-    ])
-    const compiled = compile<StructureSelection>(query)
-    const result = compiled(new QueryContext(structure))
-    structure = StructureSelection.unionStructure(result)
-
-    return structure
-}
-
-function getTransform(trans: Vec3, rot: Quat) {
-    const q: Quat = Quat.create(-rot[3], rot[0], rot[1], rot[2])
-    const m: Mat4 = Mat4.fromQuat(Mat4.zero(), q)
-    Mat4.transpose(m, m)
-    Mat4.scale(m, m, Vec3.create(-1.0, 1.0, -1.0))
-    Mat4.setTranslation(m, trans)
-    return m
-}
-
-function getResultTransforms(results: Ingredient['results']) {
-    return results.map((r: Ingredient['results'][0]) => getTransform(r[0], r[1]))
-}
-
-function getCurveTransforms(ingredient: Ingredient) {
-    const n = ingredient.nbCurve || 0
-    const instances: Mat4[] = []
-
-    for (let i = 0; i < n; ++i) {
-        const cname = `curve${i}`
-        if (!(cname in ingredient)) {
-            // console.warn(`Expected '${cname}' in ingredient`)
-            continue
-        }
-        const _points = ingredient[cname] as Vec3[]
-        if (_points.length <= 2) {
-            // TODO handle curve with 2 or less points
-            continue
-        }
-        const points = new Float32Array(_points.length * 3)
-        for (let i = 0, il = _points.length; i < il; ++i) Vec3.toArray(_points[i], points, i * 3)
-        const newInstances = getMatFromResamplePoints(points)
-        instances.push(...newInstances)
-    }
-
-    return instances
-}
-
-function getAssembly(transforms: Mat4[], structure: Structure) {
-    const builder = Structure.Builder()
-    const { units } = structure;
-
-    for (let i = 0, il = transforms.length; i < il; ++i) {
-        const id = `${i + 1}`
-        const op = SymmetryOperator.create(id, transforms[i], { assembly: { id, operId: i, operList: [ id ] } })
-        for (const unit of units) {
-            builder.addWithOperator(unit, op)
-        }
-    }
-
-    return builder.getStructure();
-}
-
-function getCifCurve(name: string, transforms: Mat4[], model: Model) {
-    if (!MmcifFormat.is(model.sourceData)) throw new Error('mmcif source data needed')
-
-    const { db } = model.sourceData.data
-    const d = db.atom_site
-    const n = d._rowCount
-    const rowCount = n * transforms.length
-
-    const { offsets, count } = model.atomicHierarchy.chainAtomSegments
-
-    const x = d.Cartn_x.toArray()
-    const y = d.Cartn_y.toArray()
-    const z = d.Cartn_z.toArray()
-
-    const Cartn_x = new Float32Array(rowCount)
-    const Cartn_y = new Float32Array(rowCount)
-    const Cartn_z = new Float32Array(rowCount)
-    const map = new Uint32Array(rowCount)
-    const seq = new Int32Array(rowCount)
-    let offset = 0
-    for (let c = 0; c < count; ++c) {
-        const cStart = offsets[c]
-        const cEnd = offsets[c + 1]
-        const cLength = cEnd - cStart
-        for (let t = 0, tl = transforms.length; t < tl; ++t) {
-            const m = transforms[t]
-            for (let j = cStart; j < cEnd; ++j) {
-                const i = offset + j - cStart
-                const xj = x[j], yj = y[j], zj = z[j]
-                Cartn_x[i] = m[0] * xj + m[4] * yj + m[8] * zj + m[12]
-                Cartn_y[i] = m[1] * xj + m[5] * yj + m[9] * zj + m[13]
-                Cartn_z[i] = m[2] * xj + m[6] * yj + m[10] * zj + m[14]
-                map[i] = j
-                seq[i] = t + 1
-            }
-            offset += cLength
-        }
-    }
-
-    function multColumn<T>(column: Column<T>) {
-        const array = column.toArray()
-        return Column.ofLambda({
-            value: row => array[map[row]],
-            areValuesEqual: (rowA, rowB) => map[rowA] === map[rowB] || array[map[rowA]] === array[map[rowB]],
-            rowCount, schema: column.schema
-        })
-    }
-
-    const _atom_site: CifCategory.SomeFields<mmCIF_Schema['atom_site']> = {
-        auth_asym_id: CifField.ofColumn(multColumn(d.auth_asym_id)),
-        auth_atom_id: CifField.ofColumn(multColumn(d.auth_atom_id)),
-        auth_comp_id: CifField.ofColumn(multColumn(d.auth_comp_id)),
-        auth_seq_id: CifField.ofNumbers(seq),
-
-        B_iso_or_equiv: CifField.ofColumn(Column.ofConst(0, rowCount, Column.Schema.float)),
-        Cartn_x: CifField.ofNumbers(Cartn_x),
-        Cartn_y: CifField.ofNumbers(Cartn_y),
-        Cartn_z: CifField.ofNumbers(Cartn_z),
-        group_PDB: CifField.ofColumn(Column.ofConst('ATOM', rowCount, Column.Schema.str)),
-        id: CifField.ofColumn(Column.ofLambda({
-            value: row => row,
-            areValuesEqual: (rowA, rowB) => rowA === rowB,
-            rowCount, schema: d.id.schema,
-        })),
-
-        label_alt_id: CifField.ofColumn(multColumn(d.label_alt_id)),
-
-        label_asym_id: CifField.ofColumn(multColumn(d.label_asym_id)),
-        label_atom_id: CifField.ofColumn(multColumn(d.label_atom_id)),
-        label_comp_id: CifField.ofColumn(multColumn(d.label_comp_id)),
-        label_seq_id: CifField.ofNumbers(seq),
-        label_entity_id: CifField.ofColumn(Column.ofConst('1', rowCount, Column.Schema.str)),
-
-        occupancy: CifField.ofColumn(Column.ofConst(1, rowCount, Column.Schema.float)),
-        type_symbol: CifField.ofColumn(multColumn(d.type_symbol)),
-
-        pdbx_PDB_ins_code: CifField.ofColumn(Column.ofConst('', rowCount, Column.Schema.str)),
-        pdbx_PDB_model_num: CifField.ofColumn(Column.ofConst(1, rowCount, Column.Schema.int)),
-    }
-
-    const categories = {
-        entity: CifCategory.ofTable('entity', db.entity),
-        chem_comp: CifCategory.ofTable('chem_comp', db.chem_comp),
-        atom_site: CifCategory.ofFields('atom_site', _atom_site)
-    }
-
-    return {
-        header: name,
-        categoryNames: Object.keys(categories),
-        categories
-    };
-}
-
-async function getCurve(name: string, transforms: Mat4[], model: Model) {
-    const cif = getCifCurve(name, transforms, model)
-
-    const curveModelTask = Task.create('Curve Model', async ctx => {
-        const format = MmcifFormat.fromFrame(cif)
-        const models = await createModels(format.data.db, format, ctx)
-        return models[0]
-    })
-
-    const curveModel = await curveModelTask.run()
-    return getStructure(curveModel)
-}
-
-async function getIngredientStructure(ingredient: Ingredient, baseUrl: string) {
-    const { name, source, results, nbCurve } = ingredient
-
-    // TODO can these be added to the library?
-    if (name === 'HIV1_CAhex_0_1_0') return
-    if (name === 'HIV1_CAhexCyclophilA_0_1_0') return
-    if (name === 'iLDL') return
-    if (name === 'peptides') return
-    if (name === 'lypoglycane') return
-
-    if (source.pdb === 'None') return
-
-    const model = await getModel(source.pdb || name, baseUrl)
-    if (!model) return
-
-    if (nbCurve) {
-        return getCurve(name, getCurveTransforms(ingredient), model)
-    } else {
-        const structure = await getStructure(model, { assembly: source.biomt ? '1' : undefined })
-        return getAssembly(getResultTransforms(results), structure)
-    }
-}
-
-export function createStructureFromCellPack(packing: CellPacking, baseUrl: string) {
-    return Task.create('Create Packing Structure', async ctx => {
-        const { ingredients, name } = packing
-        const structures: Structure[] = []
-        for (const iName in ingredients) {
-            if (ctx.shouldUpdate) await ctx.update(iName)
-            const s = await getIngredientStructure(ingredients[iName], baseUrl)
-            if (s) structures.push(s)
-        }
-
-        if (ctx.shouldUpdate) await ctx.update(`${name} - units`)
-        const builder = Structure.Builder({ label: name })
-        let offsetInvariantId = 0
-        for (const s of structures) {
-            if (ctx.shouldUpdate) await ctx.update(`${s.label}`)
-            let maxInvariantId = 0
-            for (const u of s.units) {
-                const invariantId = u.invariantId + offsetInvariantId
-                if (u.invariantId > maxInvariantId) maxInvariantId = u.invariantId
-                builder.addUnit(u.kind, u.model, u.conformation.operator, u.elements, Unit.Trait.None, invariantId)
-            }
-            offsetInvariantId += maxInvariantId + 1
-        }
-
-        if (ctx.shouldUpdate) await ctx.update(`${name} - structure`)
-        const s = builder.getStructure()
-        for( let i = 0, il = s.models.length; i < il; ++i) {
-            const { trajectoryInfo } = s.models[i]
-            trajectoryInfo.size = il
-            trajectoryInfo.index = i
-        }
-        return s
-    })
-}
-
-async function handleHivRna(ctx: { runtime: RuntimeContext, fetch: AjaxTask }, packings: CellPacking[], baseUrl: string) {
-    for (let i = 0, il = packings.length; i < il; ++i) {
-        if (packings[i].name === 'HIV1_capsid_3j3q_PackInner_0_1_0') {
-            const url = `${baseUrl}/extras/rna_allpoints.json`
-            const data = await ctx.fetch({ url, type: 'string' }).runInContext(ctx.runtime);
-            const { points } = await (new Response(data)).json() as { points: number[] }
-
-            const curve0: Vec3[] = []
-            for (let j = 0, jl = points.length; j < jl; j += 3) {
-                curve0.push(Vec3.fromArray(Vec3(), points, j))
-            }
-            packings[i].ingredients['RNA'] = {
-                source: { pdb: 'RNA_U_Base.pdb', transform: { center: false } },
-                results: [],
-                name: 'RNA',
-                nbCurve: 1,
-                curve0
-            }
-        }
-    }
-}
-
-async function loadHivMembrane(plugin: PluginContext, runtime: RuntimeContext, state: State, params: LoadCellPackModelParams) {
-    const url = `${params.baseUrl}/membranes/hiv_lipids.bcif`
-    const membraneBuilder = state.build().toRoot()
-        .apply(StateTransforms.Data.Download, { label: 'hiv_lipids', url, isBinary: true }, { state: { isGhost: true } })
-        .apply(StateTransforms.Data.ParseCif, undefined, { state: { isGhost: true } })
-        .apply(StateTransforms.Model.TrajectoryFromMmCif, undefined, { state: { isGhost: true } })
-        .apply(StateTransforms.Model.ModelFromTrajectory, undefined, { state: { isGhost: true } })
-        .apply(StateTransforms.Model.StructureFromModel)
-    await state.updateTree(membraneBuilder).runInContext(runtime)
-
-    const membraneParams = {
-        representation: params.preset.representation,
-    }
-    const membrane = state.build().to(membraneBuilder.ref)
-    await plugin.updateDataState(membrane, { revertOnError: true });
-    await CellpackMembranePreset.apply(membrane.selector, membraneParams, plugin)
-}
-
-async function loadPackings(plugin: PluginContext, runtime: RuntimeContext, state: State, params: LoadCellPackModelParams) {
-    let cellPackJson: StateBuilder.To<PSO.Format.Json, StateTransformer<PSO.Data.String, PSO.Format.Json>>
-    if (params.source.name === 'id') {
-        const url = getCellPackModelUrl(params.source.params, params.baseUrl)
-        cellPackJson = state.build().toRoot()
-            .apply(StateTransforms.Data.Download, { url, isBinary: false, label: params.source.params }, { state: { isGhost: true } })
-    } else {
-        const file = params.source.params
-        cellPackJson = state.build().toRoot()
-            .apply(StateTransforms.Data.ReadFile, { file, isBinary: false, label: file.name }, { state: { isGhost: true } })
-    }
-
-    const cellPackBuilder = cellPackJson
-        .apply(StateTransforms.Data.ParseJson, undefined, { state: { isGhost: true } })
-        .apply(ParseCellPack)
-
-    const cellPackObject = await state.updateTree(cellPackBuilder).runInContext(runtime)
-    const { packings } = cellPackObject.data
-
-    await handleHivRna({ runtime, fetch: plugin.fetch }, packings, params.baseUrl)
-
-    for (let i = 0, il = packings.length; i < il; ++i) {
-        const p = { packing: i, baseUrl: params.baseUrl }
-
-        const packing = state.build().to(cellPackBuilder.ref).apply(StructureFromCellpack, p)
-        await plugin.updateDataState(packing, { revertOnError: true });
-
-        const structure = packing.selector.obj?.data
-        if (structure) {
-            await CellPackInfoProvider.attach({ fetch: plugin.fetch, runtime }, structure, {
-                info: { packingsCount: packings.length, packingIndex: i }
-            })
-        }
-
-        const packingParams = {
-            traceOnly: params.preset.traceOnly,
-            representation: params.preset.representation,
-        }
-        await CellpackPackingPreset.apply(packing.selector, packingParams, plugin)
-    }
-}
-
-const LoadCellPackModelParams = {
-    source: PD.MappedStatic('id', {
-        'id': PD.Select('influenza_model1.json', [
-            ['blood_hiv_immature_inside.json', 'blood_hiv_immature_inside'],
-            ['BloodHIV1.0_mixed_fixed_nc1.cpr', 'BloodHIV1.0_mixed_fixed_nc1'],
-            ['HIV-1_0.1.6-8_mixed_radii_pdb.cpr', 'HIV-1_0.1.6-8_mixed_radii_pdb'],
-            ['hiv_lipids.bcif', 'hiv_lipids'],
-            ['influenza_model1.json', 'influenza_model1'],
-            ['Mycoplasma1.5_mixed_pdb_fixed.cpr', 'Mycoplasma1.5_mixed_pdb_fixed'],
-        ] as const),
-        'file': PD.File({ accept: 'id' }),
-    }, { options: [['id', 'Id'], ['file', 'File']] }),
-    baseUrl: PD.Text(DefaultCellPackBaseUrl),
-    preset: PD.Group({
-        traceOnly: PD.Boolean(false),
-        representation: PD.Select('gaussian-surface', PD.arrayToOptions(['spacefill', 'gaussian-surface', 'point', 'ellipsoid']))
-    }, { isExpanded: true })
-}
-type LoadCellPackModelParams = PD.Values<typeof LoadCellPackModelParams>
-
-export const LoadCellPackModel = StateAction.build({
-    display: { name: 'Load CellPack', description: 'Open or download a model' },
-    params: LoadCellPackModelParams,
-    from: PSO.Root
-})(({ state, params }, ctx: PluginContext) => Task.create('CellPack Loader', async taskCtx => {
-    if (!ctx.representation.structure.themes.colorThemeRegistry.has(CellPackColorThemeProvider)) {
-        ctx.representation.structure.themes.colorThemeRegistry.add(CellPackColorThemeProvider)
-    }
-
-    if (params.source.name === 'id' && params.source.params === 'hiv_lipids.bcif') {
-        await loadHivMembrane(ctx, taskCtx, state, params)
-    } else {
-        await loadPackings(ctx, taskCtx, state, params)
-    }
-}));
--- a/src/apps/viewer/extensions/cellpack/state.ts
+++ b/src/apps/viewer/extensions/cellpack/state.ts
@@ -1,73 +0,0 @@
-/**
- * Copyright (c) 2019-2020 mol* contributors, licensed under MIT, See LICENSE file for more info.
- *
- * @author Alexander Rose <alexander.rose@weirdbyte.de>
- */
-
-import { PluginStateObject as PSO, PluginStateTransform } from '../../../../mol-plugin-state/objects';
-import { ParamDefinition as PD } from '../../../../mol-util/param-definition';
-import { Task } from '../../../../mol-task';
-import { CellPack as _CellPack, Cell, CellPacking } from './data';
-import { createStructureFromCellPack } from './model';
-
-export const DefaultCellPackBaseUrl = 'https://mesoscope.scripps.edu/data/cellPACK_data/cellPACK_database_1.1.0/'
-
-export class CellPack extends PSO.Create<_CellPack>({ name: 'CellPack', typeClass: 'Object' }) { }
-
-export { ParseCellPack }
-type ParseCellPack = typeof ParseCellPack
-const ParseCellPack = PluginStateTransform.BuiltIn({
-    name: 'parse-cellpack',
-    display: { name: 'Parse CellPack', description: 'Parse CellPack from JSON data' },
-    from: PSO.Format.Json,
-    to: CellPack
-})({
-    apply({ a }) {
-        return Task.create('Parse CellPack', async ctx => {
-            const cell = a.data as Cell
-
-            const packings: CellPacking[] = []
-            const { compartments, cytoplasme } = cell
-            if (compartments) {
-                for (const name in compartments) {
-                    const { surface, interior } = compartments[name]
-                    if (surface) packings.push({ name, location: 'surface', ingredients: surface.ingredients })
-                    if (interior) packings.push({ name, location: 'interior', ingredients: interior.ingredients })
-                }
-            }
-            if (cytoplasme) packings.push({ name: 'Cytoplasme', location: 'cytoplasme', ingredients: cytoplasme.ingredients })
-
-            return new CellPack({ cell, packings });
-        });
-    }
-});
-
-export { StructureFromCellpack }
-type StructureFromCellpack = typeof ParseCellPack
-const StructureFromCellpack = PluginStateTransform.BuiltIn({
-    name: 'structure-from-cellpack',
-    display: { name: 'Structure from CellPack', description: 'Create Structure from CellPack Packing' },
-    from: CellPack,
-    to: PSO.Molecule.Structure,
-    params: a => {
-        if (!a) {
-            return {
-                packing: PD.Numeric(0, {}, { description: 'Packing Index' }),
-                baseUrl: PD.Text(DefaultCellPackBaseUrl)
-            };
-        }
-        const options = a.data.packings.map((d, i) => [i, d.name] as [number, string])
-        return {
-            packing: PD.Select(0, options),
-            baseUrl: PD.Text(DefaultCellPackBaseUrl)
-        }
-    }
-})({
-    apply({ a, params }) {
-        return Task.create('Structure from CellPack', async ctx => {
-            const packing = a.data.packings[params.packing]
-            const structure = await createStructureFromCellPack(packing, params.baseUrl).runInContext(ctx)
-            return new PSO.Molecule.Structure(structure, { label: packing.name })
-        });
-    }
-});
--- a/src/apps/viewer/extensions/cellpack/util.ts
+++ b/src/apps/viewer/extensions/cellpack/util.ts
@@ -1,48 +0,0 @@
-/**
- * Copyright (c) 2019 mol* contributors, licensed under MIT, See LICENSE file for more info.
- *
- * @author Alexander Rose <alexander.rose@weirdbyte.de>
- */
-
-import { CIF } from '../../../../mol-io/reader/cif'
-import { parsePDB } from '../../../../mol-io/reader/pdb/parser';
-
-async function parseCif(data: string|Uint8Array) {
-    const comp = CIF.parse(data);
-    const parsed = await comp.run();
-    if (parsed.isError) throw parsed;
-    return parsed.result;
-}
-
-async function parsePDBfile(data: string, id: string) {
-    const comp = parsePDB(data, id);
-    const parsed = await comp.run();
-    if (parsed.isError) throw parsed;
-    return parsed.result;
-}
-
-async function downloadCif(url: string, isBinary: boolean) {
-    const data = await fetch(url);
-    return parseCif(isBinary ? new Uint8Array(await data.arrayBuffer()) : await data.text());
-}
-
-async function downloadPDB(url: string, id: string) {
-    const data = await fetch(url);
-    return parsePDBfile(await data.text(), id);
-}
-
-export async function getFromPdb(id: string) {
-    const parsed = await downloadCif(`https://files.rcsb.org/download/${id}.cif`, false);
-    return parsed.blocks[0];
-}
-
-function getCellPackDataUrl(id: string, baseUrl: string) {
-    const url = `${baseUrl}/other/${id}`
-    return url.endsWith('.pdb') ? url : `${url}.pdb`
-}
-
-export async function getFromCellPackDB(id: string, baseUrl: string) {
-    const name = id.endsWith('.pdb') ? id.substring(0, id.length - 4) : id
-    const parsed = await downloadPDB(getCellPackDataUrl(id, baseUrl), name);
-    return parsed;
-}
--- a/src/apps/viewer/extensions/jolecule.ts
+++ b/src/apps/viewer/extensions/jolecule.ts
@@ -1,168 +0,0 @@
-// /**
-//  * Copyright (c) 2019 mol* contributors, licensed under MIT, See LICENSE file for more info.
-//  *
-//  * @author David Sehnal <david.sehnal@gmail.com>
-//  */
-
-// import { StateTree, StateBuilder, StateAction, State } from '../../../mol-state';
-// import { StateTransforms } from '../../../mol-plugin/state/transforms';
-// import { createModelTree } from '../../../mol-plugin/state/actions/structure';
-// import { PluginContext } from '../../../mol-plugin/context';
-// import { PluginStateObject } from '../../../mol-plugin/state/objects';
-// import { ParamDefinition } from '../../../mol-util/param-definition';
-// import { PluginCommands } from '../../../mol-plugin/command';
-// import { Vec3 } from '../../../mol-math/linear-algebra';
-// import { PluginStateSnapshotManager } from '../../../mol-plugin/state/snapshots';
-// import { MolScriptBuilder as MS } from '../../../mol-script/language/builder';
-// import { Text } from '../../../mol-geo/geometry/text/text';
-// import { UUID } from '../../../mol-util';
-// import { ColorNames } from '../../../mol-util/color/names';
-// import { Camera } from '../../../mol-canvas3d/camera';
-// import { createStructureRepresentation3dParamss } from '../../../mol-plugin/state/transforms/representation';
-// import { createDefaultStructureComplex } from '../../../mol-plugin/util/structure-complex-helper';
-
-// export const CreateJoleculeState = StateAction.build({
-//     display: { name: 'Jolecule State Import' },
-//     params: { id: ParamDefinition.Text('1mbo') },
-//     from: PluginStateObject.Root
-// })(async ({ ref, state, params }, plugin: PluginContext) => {
-//     try {
-//         const id = params.id.trim().toLowerCase();
-//         const data = await plugin.runTask(plugin.fetch({ url: `https://jolecule.appspot.com/pdb/${id}.views.json`, type: 'json' })) as JoleculeSnapshot[];
-
-//         data.sort((a, b) => a.order - b.order);
-
-//         await PluginCommands.State.RemoveObject.dispatch(plugin, { state, ref });
-//         plugin.state.snapshots.clear();
-
-//         const template = createTemplate(plugin, state, id);
-//         const snapshots = data.map((e, idx) => buildSnapshot(plugin, template, { e, idx, len: data.length }));
-//         for (const s of snapshots) {
-//             plugin.state.snapshots.add(s);
-//         }
-
-//         PluginCommands.State.Snapshots.Apply.dispatch(plugin, { id: snapshots[0].snapshot.id });
-//     } catch (e) {
-//         plugin.log.error(`Jolecule Failed: ${e}`);
-//     }
-// });
-
-// interface JoleculeSnapshot {
-//     order: number,
-//     distances: { i_atom1: number, i_atom2: number }[],
-//     labels: { i_atom: number, text: string }[],
-//     camera: { up: Vec3, pos: Vec3, in: Vec3, slab: { z_front: number, z_back: number, zoom: number } },
-//     selected: number[],
-//     text: string
-// }
-
-// function createTemplate(plugin: PluginContext, state: State, id: string) {
-//     const b = new StateBuilder.Root(state.tree);
-//     const data = b.toRoot().apply(StateTransforms.Data.Download, { url: `https://www.ebi.ac.uk/pdbe/static/entry/${id}_updated.cif` }, { state: { isGhost: true }});
-//     const model = createModelTree(data, 'cif');
-//     const structure = model.apply(StateTransforms.Model.StructureFromModel);
-//     createDefaultStructureComplex(plugin, structure);
-//     return { tree: b.getTree(), structure: structure.ref };
-// }
-
-// const labelOptions: ParamDefinition.Values<Text.Params> = {
-//     ...ParamDefinition.getDefaultValues(Text.Params),
-//     tether: true,
-//     sizeFactor: 1.3,
-//     attachment: 'bottom-right',
-//     offsetZ: 10,
-//     background: true,
-//     backgroundMargin: 0.2,
-//     backgroundColor: ColorNames.skyblue,
-//     backgroundOpacity: 0.9
-// }
-
-// // const distanceLabelOptions = {
-// //     ...ParamDefinition.getDefaultValues(Text.Params),
-// //     sizeFactor: 1,
-// //     offsetX: 0,
-// //     offsetY: 0,
-// //     offsetZ: 10,
-// //     background: true,
-// //     backgroundMargin: 0.2,
-// //     backgroundColor: ColorNames.snow,
-// //     backgroundOpacity: 0.9
-// // }
-
-// function buildSnapshot(plugin: PluginContext, template: { tree: StateTree, structure: string }, params: { e: JoleculeSnapshot, idx: number, len: number }): PluginStateSnapshotManager.Entry {
-//     const b = new StateBuilder.Root(template.tree);
-
-//     let i = 0;
-//     for (const l of params.e.labels) {
-//         const expression = createExpression([l.i_atom]);
-//         const group = b.to(template.structure)
-//             .group(StateTransforms.Misc.CreateGroup, { label: `Label ${++i}` });
-
-//         group
-//             .apply(StateTransforms.Model.StructureSelectionFromExpression, { expression, label: 'Atom' })
-//             .apply(StateTransforms.Representation.StructureLabels3D, {
-//                 target: { name: 'static-text', params: { value: l.text || '' } },
-//                 options: labelOptions
-//             });
-
-//         group
-//             .apply(StateTransforms.Model.StructureSelectionFromExpression, { expression: MS.struct.modifier.wholeResidues([ expression ]), label: 'Residue' })
-//             .apply(StateTransforms.Representation.StructureRepresentation3D,
-//                 createStructureRepresentation3dParamss.getDefaultParamsStatic(plugin, 'ball-and-stick', {  }));
-//     }
-//     if (params.e.selected && params.e.selected.length > 0) {
-//         b.to(template.structure)
-//             .apply(StateTransforms.Model.StructureSelectionFromExpression, { expression: createExpression(params.e.selected), label: `Selected` })
-//             .apply(StateTransforms.Representation.StructureRepresentation3D,
-//                 createStructureRepresentation3dParamss.getDefaultParamsStatic(plugin, 'ball-and-stick'));
-//     }
-//     // TODO
-//     // for (const l of params.e.distances) {
-//     //     b.to('structure')
-//     //         .apply(StateTransforms.Model.StructureSelectionFromExpression, { query: createQuery([l.i_atom1, l.i_atom2]), label: `Distance ${++i}` })
-//     //         .apply(StateTransforms.Representation.StructureLabels3D, {
-//     //             target: { name: 'static-text', params: { value: l. || '' } },
-//     //             options: labelOptions
-//     //         });
-//     // }
-//     return PluginStateSnapshotManager.Entry({
-//         id: UUID.create22(),
-//         data: { tree: StateTree.toJSON(b.getTree()) },
-//         camera: {
-//             current: getCameraSnapshot(params.e.camera),
-//             transitionStyle: 'animate',
-//             transitionDurationInMs: 350
-//         }
-//     }, {
-//         name:  params.e.text
-//     });
-// }
-
-// function getCameraSnapshot(e: JoleculeSnapshot['camera']): Camera.Snapshot {
-//     const direction = Vec3.sub(Vec3(), e.pos, e.in);
-//     Vec3.normalize(direction, direction);
-//     const up = Vec3.sub(Vec3(), e.pos, e.up);
-//     Vec3.normalize(up, up);
-
-//     const s: Camera.Snapshot = {
-//         mode: 'perspective',
-//         fov: Math.PI / 4,
-//         position: Vec3.scaleAndAdd(Vec3(), e.pos, direction, e.slab.zoom),
-//         target: e.pos,
-//         radius: (e.slab.z_back - e.slab.z_front) / 2,
-//         fog: 50,
-//         up,
-//     };
-//     return s;
-// }
-
-// function createExpression(atomIndices: number[]) {
-//     if (atomIndices.length === 0) return MS.struct.generator.empty();
-
-//     return MS.struct.generator.atomGroups({
-//         'atom-test': atomIndices.length === 1
-//             ? MS.core.rel.eq([MS.struct.atomProperty.core.sourceIndex(), atomIndices[0]])
-//             : MS.core.set.has([MS.set.apply(null, atomIndices), MS.struct.atomProperty.core.sourceIndex()]),
-//         'group-by': 0
-//     });
-// }
--- a/src/apps/viewer/index.html
+++ b/src/apps/viewer/index.html
@@ -34,10 +34,56 @@
                height: 600px;
            }
        </style>
-        <link rel="stylesheet" type="text/css" href="app.css" />
+        <link rel="stylesheet" type="text/css" href="molstar.css" />
    </head>
    <body>
        <div id="app"></div>
-        <script type="text/javascript" src="./index.js"></script>
+        <script type="text/javascript" src="./molstar.js"></script>
+        <script type="text/javascript">
+            function getParam(name, regex) {
+                var r = new RegExp(name + '=' + '(' + regex + ')[&]?', 'i');
+                return decodeURIComponent(((window.location.search || '').match(r) || [])[1] || '');
+            }
+
+            var debugMode = getParam('debug-mode', '[^&]+').trim() === '1';
+            if (debugMode) molstar.setDebugMode(debugMode, debugMode);
+
+            var disableAntialiasing = getParam('disable-antialiasing', '[^&]+').trim() === '1';
+            var pixelScale = parseFloat(getParam('pixel-scale', '[^&]+').trim() || '1');
+            var disableWboit = getParam('disable-wboit', '[^&]+').trim() === '1';
+            var hideControls = getParam('hide-controls', '[^&]+').trim() === '1';
+            var pdbProvider = getParam('pdb-provider', '[^&]+').trim().toLowerCase();
+            var emdbProvider = getParam('emdb-provider', '[^&]+').trim().toLowerCase();
+            var viewer = new molstar.Viewer('app', {
+                disableAntialiasing: disableAntialiasing,
+                pixelScale: pixelScale,
+                enableWboit: !disableWboit,
+                layoutShowControls: !hideControls,
+                viewportShowExpand: false,
+                pdbProvider: pdbProvider || 'pdbe',
+                emdbProvider: emdbProvider || 'pdbe',
+            });
+
+            var snapshotId = getParam('snapshot-id', '[^&]+').trim();
+            if (snapshotId) viewer.setRemoteSnapshot(snapshotId);
+
+            var snapshotUrl = getParam('snapshot-url', '[^&]+').trim();
+            var snapshotUrlType = getParam('snapshot-url-type', '[^&]+').toLowerCase().trim() || 'molj';
+            if (snapshotUrl && snapshotUrlType) viewer.loadSnapshotFromUrl(snapshotUrl, snapshotUrlType);
+
+            var structureUrl = getParam('structure-url', '[^&]+').trim();
+            var structureUrlFormat = getParam('structure-url-format', '[a-z]+').toLowerCase().trim();
+            var structureUrlIsBinary = getParam('structure-url-is-binary', '[^&]+').trim() === '1';
+            if (structureUrl) viewer.loadStructureFromUrl(structureUrl, structureUrlFormat, structureUrlIsBinary);
+
+            var pdb = getParam('pdb', '[^&]+').trim();
+            if (pdb) viewer.loadPdb(pdb);
+
+            var pdbDev = getParam('pdb-dev', '[^&]+').trim();
+            if (pdbDev) viewer.loadPdbDev(pdbDev);
+
+            var emdb = getParam('emdb', '[^&]+').trim();
+            if (emdb) viewer.loadEmdb(emdb);
+        </script>
    </body>
 </html>
--- a/src/apps/viewer/index.ts
+++ b/src/apps/viewer/index.ts
@@ -1,102 +1,279 @@
 /**
- * Copyright (c) 2018-2019 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ * Copyright (c) 2018-2020 mol* contributors, licensed under MIT, See LICENSE file for more info.
 *
 * @author David Sehnal <david.sehnal@gmail.com>
 * @author Alexander Rose <alexander.rose@weirdbyte.de>
 */

 import '../../mol-util/polyfill';
-import { createPlugin, DefaultPluginSpec } from '../../mol-plugin';
-import './index.html'
-import './favicon.ico'
+import { createPlugin } from '../../mol-plugin';
+import { DefaultPluginSpec } from '../../mol-plugin/spec';
+import './index.html';
+import './embedded.html';
+import './favicon.ico';
 import { PluginContext } from '../../mol-plugin/context';
 import { PluginCommands } from '../../mol-plugin/commands';
 import { PluginSpec } from '../../mol-plugin/spec';
-import { LoadCellPackModel } from './extensions/cellpack/model';
-import { StructureFromCellpack } from './extensions/cellpack/state';
-import { DownloadStructure } from '../../mol-plugin-state/actions/structure';
+import { DownloadStructure, PdbDownloadProvider } from '../../mol-plugin-state/actions/structure';
 import { PluginConfig } from '../../mol-plugin/config';
-require('mol-plugin-ui/skin/light.scss')
+import { CellPack } from '../../extensions/cellpack';
+import { RCSBAssemblySymmetry, RCSBValidationReport } from '../../extensions/rcsb';
+import { PDBeStructureQualityReport } from '../../extensions/pdbe';
+import { Asset } from '../../mol-util/assets';
+import { ObjectKeys } from '../../mol-util/type-helpers';
+import { PluginState } from '../../mol-plugin/state';
+import { DownloadDensity } from '../../mol-plugin-state/actions/volume';
+import { PluginLayoutControlsDisplay } from '../../mol-plugin/layout';
+import { BuiltInTrajectoryFormat } from '../../mol-plugin-state/formats/trajectory';
+import { ANVILMembraneOrientation } from '../../extensions/anvil/behavior';
+import { DnatcoConfalPyramids } from '../../extensions/dnatco';
+import { G3DFormat, G3dProvider } from '../../extensions/g3d/format';
+import { DataFormatProvider } from '../../mol-plugin-state/formats/provider';
+import { BuildInVolumeFormat } from '../../mol-plugin-state/formats/volume';
+import { Color } from '../../mol-util/color';
+import { StateObjectSelector } from '../../mol-state';
+import { PluginStateObject } from '../../mol-plugin-state/objects';
+import { StateTransforms } from '../../mol-plugin-state/transforms';
+import { createVolumeRepresentationParams } from '../../mol-plugin-state/helpers/volume-representation-params';
+import { Mp4Export } from '../../extensions/mp4-export';
+import { StructureRepresentationPresetProvider } from '../../mol-plugin-state/builder/structure/representation-preset';

-function getParam(name: string, regex: string): string {
-    let r = new RegExp(`${name}=(${regex})[&]?`, 'i');
-    return decodeURIComponent(((window.location.search || '').match(r) || [])[1] || '');
-}
+require('mol-plugin-ui/skin/light.scss');

-const hideControls = getParam('hide-controls', `[^&]+`) === '1';
+export { PLUGIN_VERSION as version } from '../../mol-plugin/version';
+export { setProductionMode, setDebugMode } from '../../mol-util/debug';

-function init() {
-    const spec: PluginSpec = {
-        actions: [
-            ...DefaultPluginSpec.actions,
-            // PluginSpec.Action(CreateJoleculeState),
-            PluginSpec.Action(LoadCellPackModel),
-            PluginSpec.Action(StructureFromCellpack),
-        ],
-        behaviors: [...DefaultPluginSpec.behaviors],
-        animations: [...DefaultPluginSpec.animations || []],
-        customParamEditors: DefaultPluginSpec.customParamEditors,
-        layout: {
-            initial: {
-                isExpanded: true,
-                showControls: !hideControls
+const CustomFormats = [
+    ['g3d', G3dProvider] as const
+];
+
+const Extensions = {
+    'cellpack': PluginSpec.Behavior(CellPack),
+    'dnatco-confal-pyramids': PluginSpec.Behavior(DnatcoConfalPyramids),
+    'pdbe-structure-quality-report': PluginSpec.Behavior(PDBeStructureQualityReport),
+    'rcsb-assembly-symmetry': PluginSpec.Behavior(RCSBAssemblySymmetry),
+    'rcsb-validation-report': PluginSpec.Behavior(RCSBValidationReport),
+    'anvil-membrane-orientation': PluginSpec.Behavior(ANVILMembraneOrientation),
+    'g3d': PluginSpec.Behavior(G3DFormat),
+    'mp4-export': PluginSpec.Behavior(Mp4Export)
+};
+
+const DefaultViewerOptions = {
+    customFormats: CustomFormats as [string, DataFormatProvider][],
+    extensions: ObjectKeys(Extensions),
+    layoutIsExpanded: true,
+    layoutShowControls: true,
+    layoutShowRemoteState: true,
+    layoutControlsDisplay: 'reactive' as PluginLayoutControlsDisplay,
+    layoutShowSequence: true,
+    layoutShowLog: true,
+    layoutShowLeftPanel: true,
+    disableAntialiasing: false,
+    pixelScale: 1,
+    enableWboit: true,
+
+    viewportShowExpand: PluginConfig.Viewport.ShowExpand.defaultValue,
+    viewportShowControls: PluginConfig.Viewport.ShowControls.defaultValue,
+    viewportShowSettings: PluginConfig.Viewport.ShowSettings.defaultValue,
+    viewportShowSelectionMode: PluginConfig.Viewport.ShowSelectionMode.defaultValue,
+    viewportShowAnimation: PluginConfig.Viewport.ShowAnimation.defaultValue,
+    pluginStateServer: PluginConfig.State.DefaultServer.defaultValue,
+    volumeStreamingServer: PluginConfig.VolumeStreaming.DefaultServer.defaultValue,
+    volumeStreamingDisabled: !PluginConfig.VolumeStreaming.Enabled.defaultValue,
+    pdbProvider: PluginConfig.Download.DefaultPdbProvider.defaultValue,
+    emdbProvider: PluginConfig.Download.DefaultEmdbProvider.defaultValue,
+};
+type ViewerOptions = typeof DefaultViewerOptions;
+
+export class Viewer {
+    plugin: PluginContext
+
+    constructor(elementOrId: string | HTMLElement, options: Partial<ViewerOptions> = {}) {
+        const o = { ...DefaultViewerOptions, ...options };
+        const defaultSpec = DefaultPluginSpec();
+
+        const spec: PluginSpec = {
+            actions: [...defaultSpec.actions],
+            behaviors: [
+                ...defaultSpec.behaviors,
+                ...o.extensions.map(e => Extensions[e]),
+            ],
+            animations: [...defaultSpec.animations || []],
+            customParamEditors: defaultSpec.customParamEditors,
+            customFormats: o?.customFormats,
+            layout: {
+                initial: {
+                    isExpanded: o.layoutIsExpanded,
+                    showControls: o.layoutShowControls,
+                    controlsDisplay: o.layoutControlsDisplay,
+                },
+                controls: {
+                    ...defaultSpec.layout && defaultSpec.layout.controls,
+                    top: o.layoutShowSequence ? undefined : 'none',
+                    bottom: o.layoutShowLog ? undefined : 'none',
+                    left: o.layoutShowLeftPanel ? undefined : 'none',
+                }
            },
-            controls: {
-                ...DefaultPluginSpec.layout && DefaultPluginSpec.layout.controls
-            }
-        },
-        config: DefaultPluginSpec.config
-    };
-    spec.config?.set(PluginConfig.Viewport.ShowExpand, false);
-    const plugin = createPlugin(document.getElementById('app')!, spec);
-    trySetSnapshot(plugin);
-    tryLoadFromUrl(plugin);
-}
+            components: {
+                ...defaultSpec.components,
+                remoteState: o.layoutShowRemoteState ? 'default' : 'none',
+            },
+            config: [
+                [PluginConfig.General.DisableAntialiasing, o.disableAntialiasing],
+                [PluginConfig.General.PixelScale, o.pixelScale],
+                [PluginConfig.General.EnableWboit, o.enableWboit],
+                [PluginConfig.Viewport.ShowExpand, o.viewportShowExpand],
+                [PluginConfig.Viewport.ShowControls, o.viewportShowControls],
+                [PluginConfig.Viewport.ShowSettings, o.viewportShowSettings],
+                [PluginConfig.Viewport.ShowSelectionMode, o.viewportShowSelectionMode],
+                [PluginConfig.Viewport.ShowAnimation, o.viewportShowAnimation],
+                [PluginConfig.State.DefaultServer, o.pluginStateServer],
+                [PluginConfig.State.CurrentServer, o.pluginStateServer],
+                [PluginConfig.VolumeStreaming.DefaultServer, o.volumeStreamingServer],
+                [PluginConfig.VolumeStreaming.Enabled, !o.volumeStreamingDisabled],
+                [PluginConfig.Download.DefaultPdbProvider, o.pdbProvider],
+                [PluginConfig.Download.DefaultEmdbProvider, o.emdbProvider]
+            ]
+        };

-async function trySetSnapshot(ctx: PluginContext) {
-    try {
-        const snapshotUrl = getParam('snapshot-url', `[^&]+`);
-        const snapshotId = getParam('snapshot-id', `[^&]+`);
-        if (!snapshotUrl && !snapshotId) return;
-        // TODO parametrize the server
-        const url = snapshotId
-            ? `https://webchem.ncbr.muni.cz/molstar-state/get/${snapshotId}`
-            : snapshotUrl;
-        await PluginCommands.State.Snapshots.Fetch(ctx, { url })
-    } catch (e) {
-        ctx.log.error('Failed to load snapshot.');
-        console.warn('Failed to load snapshot', e);
+        const element = typeof elementOrId === 'string'
+            ? document.getElementById(elementOrId)
+            : elementOrId;
+        if (!element) throw new Error(`Could not get element with id '${elementOrId}'`);
+        this.plugin = createPlugin(element, spec);
    }
-}

-async function tryLoadFromUrl(ctx: PluginContext) {
-    const url = getParam('loadFromURL', '[^&]+').trim();
-    try {
-        if (!url) return;
+    setRemoteSnapshot(id: string) {
+        const url = `${this.plugin.config.get(PluginConfig.State.CurrentServer)}/get/${id}`;
+        return PluginCommands.State.Snapshots.Fetch(this.plugin, { url });
+    }

-        let format = 'cif', isBinary = false;
-        switch (getParam('loadFromURLFormat', '[a-z]+').toLocaleLowerCase().trim()) {
-            case 'pdb': format = 'pdb'; break;
-            case 'mmbcif': isBinary = true; break;
-        }
+    loadSnapshotFromUrl(url: string, type: PluginState.SnapshotType) {
+        return PluginCommands.State.Snapshots.OpenUrl(this.plugin, { url, type });
+    }

-        const params = DownloadStructure.createDefaultParams(void 0 as any, ctx);
-
-        return ctx.runTask(ctx.state.data.applyAction(DownloadStructure, {
+    loadStructureFromUrl(url: string, format: BuiltInTrajectoryFormat = 'mmcif', isBinary = false, options?: LoadStructureOptions) {
+        const params = DownloadStructure.createDefaultParams(this.plugin.state.data.root.obj!, this.plugin);
+        return this.plugin.runTask(this.plugin.state.data.applyAction(DownloadStructure, {
            source: {
                name: 'url',
                params: {
-                    url,
+                    url: Asset.Url(url),
                    format: format as any,
                    isBinary,
+                    options: { ...params.source.params.options, representationParams: options?.representationParams as any },
+                }
+            }
+        }));
+    }
+
+    async loadAllModelsOrAssemblyFromUrl(url: string, format: BuiltInTrajectoryFormat = 'mmcif', isBinary = false, options?: LoadStructureOptions) {
+        const plugin = this.plugin;
+
+        const data = await plugin.builders.data.download({ url, isBinary }, { state: { isGhost: true } });
+        const trajectory = await plugin.builders.structure.parseTrajectory(data, format);
+
+        await this.plugin.builders.structure.hierarchy.applyPreset(trajectory, 'all-models', { useDefaultIfSingleModel: true, representationPresetParams: options?.representationParams });
+    }
+
+    async loadStructureFromData(data: string | number[], format: BuiltInTrajectoryFormat, options?: { dataLabel?: string }) {
+        const _data = await this.plugin.builders.data.rawData({ data, label: options?.dataLabel });
+        const trajectory = await this.plugin.builders.structure.parseTrajectory(_data, format);
+        await this.plugin.builders.structure.hierarchy.applyPreset(trajectory, 'default');
+    }
+
+    loadPdb(pdb: string, options?: LoadStructureOptions) {
+        const params = DownloadStructure.createDefaultParams(this.plugin.state.data.root.obj!, this.plugin);
+        const provider = this.plugin.config.get(PluginConfig.Download.DefaultPdbProvider)!;
+        return this.plugin.runTask(this.plugin.state.data.applyAction(DownloadStructure, {
+            source: {
+                name: 'pdb' as const,
+                params: {
+                    provider: {
+                        id: pdb,
+                        server: {
+                            name: provider,
+                            params: PdbDownloadProvider[provider].defaultValue as any
+                        }
+                    },
+                    options: { ...params.source.params.options, representationParams: options?.representationParams as any },
+                }
+            }
+        }));
+    }
+
+    loadPdbDev(pdbDev: string) {
+        const params = DownloadStructure.createDefaultParams(this.plugin.state.data.root.obj!, this.plugin);
+        return this.plugin.runTask(this.plugin.state.data.applyAction(DownloadStructure, {
+            source: {
+                name: 'pdb-dev' as const,
+                params: {
+                    provider: {
+                        id: pdbDev,
+                        encoding: 'bcif',
+                    },
                    options: params.source.params.options,
                }
            }
        }));
-    } catch (e) {
-        ctx.log.error(`Failed to load from URL (${url})`);
-        console.warn(`Failed to load from URL (${url})`, e);
+    }
+
+    loadEmdb(emdb: string, options?: { detail?: number }) {
+        const provider = this.plugin.config.get(PluginConfig.Download.DefaultEmdbProvider)!;
+        return this.plugin.runTask(this.plugin.state.data.applyAction(DownloadDensity, {
+            source: {
+                name: 'pdb-emd-ds' as const,
+                params: {
+                    provider: {
+                        id: emdb,
+                        server: provider,
+                    },
+                    detail: options?.detail ?? 3,
+                }
+            }
+        }));
+    }
+
+    async loadVolumeFromUrl(url: string, format: BuildInVolumeFormat, isBinary: boolean, isovalues: VolumeIsovalueInfo[], entryId?: string) {
+        const plugin = this.plugin;
+
+        if (!plugin.dataFormats.get(format)) {
+            throw new Error(`Unknown density format: ${format}`);
+        }
+
+        return plugin.dataTransaction(async () => {
+            const data = await plugin.builders.data.download({ url, isBinary, label: entryId }, { state: { isGhost: true } });
+
+            const parsed = await plugin.dataFormats.get(format)!.parse(plugin, data, { entryId });
+            const volume = (parsed.volume || parsed.volumes[0]) as StateObjectSelector<PluginStateObject.Volume.Data>;
+            if (!volume?.isOk) throw new Error('Failed to parse any volume.');
+
+            const repr = plugin.build().to(volume);
+            for (const iso of isovalues) {
+                repr.apply(StateTransforms.Representation.VolumeRepresentation3D, createVolumeRepresentationParams(this.plugin, volume.data!, {
+                    type: 'isosurface',
+                    typeParams: { alpha: iso.alpha ?? 1, isoValue: iso.type === 'absolute' ?  { kind: 'absolute', absoluteValue: iso.value } : { kind: 'relative', relativeValue: iso.value } },
+                    color: 'uniform',
+                    colorParams: { value: iso.color }
+                }));
+            }
+
+            await repr.commit();
+        });
+    }
+
+    handleResize() {
+        this.plugin.layout.events.updated.next();
    }
 }

-init();
+export interface LoadStructureOptions {
+    representationParams?: StructureRepresentationPresetProvider.CommonParams
+}
+
+export interface VolumeIsovalueInfo {
+    type: 'absolute' | 'relative',
+    value: number,
+    color: Color,
+    alpha?: number
+}
--- a/src/cli/chem-comp-dict/create-ions.ts
+++ b/src/cli/chem-comp-dict/create-ions.ts
@@ -0,0 +1,73 @@
+#!/usr/bin/env node
+/**
+ * Copyright (c) 2020 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * @author Josh McMenemy <josh.mcmenemy@gmail.com>
+ */
+
+import * as argparse from 'argparse';
+import * as path from 'path';
+import util from 'util';
+import fs from 'fs';
+require('util.promisify').shim();
+const writeFile = util.promisify(fs.writeFile);
+
+import { DatabaseCollection } from '../../mol-data/db';
+import { CCD_Schema } from '../../mol-io/reader/cif/schema/ccd';
+import { ensureDataAvailable, readCCD } from './util';
+
+function extractIonNames(ccd: DatabaseCollection<CCD_Schema>) {
+    const ionNames: string[] = [];
+    for (const k in ccd) {
+        const {chem_comp} = ccd[k];
+        if (chem_comp.name.value(0).toUpperCase().includes(' ION')) {
+            ionNames.push(chem_comp.id.value(0));
+        }
+    }
+    // these are extra ions that don't have ION in their name
+    ionNames.push('NCO', 'OHX');
+    return ionNames;
+}
+
+function writeIonNamesFile(filePath: string, ionNames: string[]) {
+    const output = `/**
+ * Copyright (c) 2020 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * Code-generated ion names params file. Names extracted from CCD components.
+ *
+ * @author molstar/chem-comp-dict/create-table cli
+ */
+
+export const IonNames = new Set(${JSON.stringify(ionNames).replace(/"/g, "'").replace(/,/g, ', ')});
+`;
+    writeFile(filePath, output);
+}
+
+async function run(out: string, forceDownload = false) {
+    await ensureDataAvailable(forceDownload);
+    const ccd = await readCCD();
+    const ionNames = extractIonNames(ccd);
+    if (!fs.existsSync(path.dirname(out))) {
+        fs.mkdirSync(path.dirname(out));
+    }
+    writeIonNamesFile(out, ionNames);
+}
+
+const parser = new argparse.ArgumentParser({
+    addHelp: true,
+    description: 'Extract and save IonNames from CCD.'
+});
+parser.addArgument('out', {
+    help: 'Generated file output path.'
+});
+parser.addArgument([ '--forceDownload', '-f' ], {
+    action: 'storeTrue',
+    help: 'Force download of CCD and PVCD.'
+});
+interface Args {
+    out: string,
+    forceDownload?: boolean,
+}
+const args: Args = parser.parseArgs();
+
+run(args.out, args.forceDownload);
--- a/src/cli/chem-comp-dict/create-table.ts
+++ b/src/cli/chem-comp-dict/create-table.ts
@@ -0,0 +1,294 @@
+#!/usr/bin/env node
+/**
+ * Copyright (c) 2018-2020 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * @author Alexander Rose <alexander.rose@weirdbyte.de>
+ */
+
+import * as argparse from 'argparse';
+import * as util from 'util';
+import * as path from 'path';
+import * as fs from 'fs';
+require('util.promisify').shim();
+const writeFile = util.promisify(fs.writeFile);
+
+import { Database, Table, DatabaseCollection } from '../../mol-data/db';
+import { CCD_Schema } from '../../mol-io/reader/cif/schema/ccd';
+import { SetUtils } from '../../mol-util/set';
+import { DefaultMap } from '../../mol-util/map';
+import { mmCIF_chemCompBond_schema } from '../../mol-io/reader/cif/schema/mmcif-extras';
+import { ccd_chemCompAtom_schema } from '../../mol-io/reader/cif/schema/ccd-extras';
+import { ensureDataAvailable, getEncodedCif, readCCD, readPVCD } from './util';
+
+type CCB = Table<CCD_Schema['chem_comp_bond']>
+type CCA = Table<CCD_Schema['chem_comp_atom']>
+
+function ccbKey(compId: string, atomId1: string, atomId2: string) {
+    return atomId1 < atomId2 ? `${compId}:${atomId1}-${atomId2}` : `${compId}:${atomId2}-${atomId1}`;
+}
+
+function ccaKey(compId: string, atomId: string) {
+    return `${compId}:${atomId}`;
+}
+
+function addChemCompBondToSet(set: Set<string>, ccb: CCB) {
+    for (let i = 0, il = ccb._rowCount; i < il; ++i) {
+        set.add(ccbKey(ccb.comp_id.value(i), ccb.atom_id_1.value(i), ccb.atom_id_2.value(i)));
+    }
+    return set;
+}
+
+function addChemCompAtomToSet(set: Set<string>, cca: CCA) {
+    for (let i = 0, il = cca._rowCount; i < il; ++i) {
+        set.add(ccaKey(cca.comp_id.value(i), cca.atom_id.value(i)));
+    }
+    return set;
+}
+
+function checkAddingBondsFromPVCD(pvcd: DatabaseCollection<CCD_Schema>) {
+    const ccbSetByParent = DefaultMap<string, Set<string>>(() => new Set());
+
+    for (const k in pvcd) {
+        const { chem_comp, chem_comp_bond } = pvcd[k];
+        if (chem_comp_bond._rowCount) {
+            const parentIds = chem_comp.mon_nstd_parent_comp_id.value(0);
+            if (parentIds.length === 0) {
+                const set = ccbSetByParent.getDefault(chem_comp.id.value(0));
+                addChemCompBondToSet(set, chem_comp_bond);
+            } else {
+                for (let i = 0, il = parentIds.length; i < il; ++i) {
+                    const parentId = parentIds[i];
+                    const set = ccbSetByParent.getDefault(parentId);
+                    addChemCompBondToSet(set, chem_comp_bond);
+                }
+            }
+        }
+    }
+
+    for (const k in pvcd) {
+        const { chem_comp, chem_comp_atom, chem_comp_bond } = pvcd[k];
+        if (chem_comp_bond._rowCount) {
+            const parentIds = chem_comp.mon_nstd_parent_comp_id.value(0);
+            if (parentIds.length > 0) {
+                for (let i = 0, il = parentIds.length; i < il; ++i) {
+                    const entryBonds = addChemCompBondToSet(new Set<string>(), chem_comp_bond);
+                    const entryAtoms = addChemCompAtomToSet(new Set<string>(), chem_comp_atom);
+                    const extraBonds = SetUtils.difference(ccbSetByParent.get(parentIds[i])!, entryBonds);
+                    extraBonds.forEach(bk => {
+                        const [a1, a2] = bk.split('|');
+                        if (entryAtoms.has(a1) && entryAtoms.has(a2)) {
+                            console.error(`Adding all PVCD bonds would wrongly add bond ${bk} for ${k}`);
+                        }
+                    });
+                }
+            }
+        }
+    }
+}
+
+function checkAddingAtomsFromPVCD(pvcd: DatabaseCollection<CCD_Schema>) {
+    const ccaSetByParent = DefaultMap<string, Set<string>>(() => new Set());
+
+    for (const k in pvcd) {
+        const { chem_comp, chem_comp_atom } = pvcd[k];
+        if (chem_comp_atom._rowCount) {
+            const parentIds = chem_comp.mon_nstd_parent_comp_id.value(0);
+            if (parentIds.length === 0) {
+                const set = ccaSetByParent.getDefault(chem_comp.id.value(0));
+                addChemCompAtomToSet(set, chem_comp_atom);
+            } else {
+                for (let i = 0, il = parentIds.length; i < il; ++i) {
+                    const parentId = parentIds[i];
+                    const set = ccaSetByParent.getDefault(parentId);
+                    addChemCompAtomToSet(set, chem_comp_atom);
+                }
+            }
+        }
+    }
+}
+
+async function createBonds(
+    ccd: DatabaseCollection<CCD_Schema>,
+    pvcd: DatabaseCollection<CCD_Schema>,
+    atomsRequested: boolean
+) {
+    const ccbSet = new Set<string>();
+
+    const comp_id: string[] = [];
+    const atom_id_1: string[] = [];
+    const atom_id_2: string[] = [];
+    const value_order: typeof mmCIF_chemCompBond_schema['value_order']['T'][] = [];
+    const pdbx_aromatic_flag: typeof mmCIF_chemCompBond_schema['pdbx_aromatic_flag']['T'][] = [];
+    const pdbx_stereo_config: typeof mmCIF_chemCompBond_schema['pdbx_stereo_config']['T'][] = [];
+    const molstar_protonation_variant: string[] = [];
+
+    function addBonds(compId: string, ccb: CCB, protonationVariant: boolean) {
+        for (let i = 0, il = ccb._rowCount; i < il; ++i) {
+            const atomId1 = ccb.atom_id_1.value(i);
+            const atomId2 = ccb.atom_id_2.value(i);
+            const k = ccbKey(compId, atomId1, atomId2);
+            if (!ccbSet.has(k)) {
+                atom_id_1.push(atomId1);
+                atom_id_2.push(atomId2);
+                comp_id.push(compId);
+                value_order.push(ccb.value_order.value(i));
+                pdbx_aromatic_flag.push(ccb.pdbx_aromatic_flag.value(i));
+                pdbx_stereo_config.push(ccb.pdbx_stereo_config.value(i));
+                molstar_protonation_variant.push(protonationVariant ? 'Y' : 'N');
+                ccbSet.add(k);
+            }
+        }
+    }
+
+    // check adding bonds from PVCD
+    checkAddingBondsFromPVCD(pvcd);
+
+    // add bonds from PVCD
+    for (const k in pvcd) {
+        const { chem_comp, chem_comp_bond } = pvcd[k];
+        if (chem_comp_bond._rowCount) {
+            const parentIds = chem_comp.mon_nstd_parent_comp_id.value(0);
+            if (parentIds.length === 0) {
+                addBonds(chem_comp.id.value(0), chem_comp_bond, false);
+            } else {
+                for (let i = 0, il = parentIds.length; i < il; ++i) {
+                    addBonds(parentIds[i], chem_comp_bond, true);
+                }
+            }
+        }
+    }
+
+    // add bonds from CCD
+    for (const k in ccd) {
+        const { chem_comp, chem_comp_bond } = ccd[k];
+        if (chem_comp_bond._rowCount) {
+            addBonds(chem_comp.id.value(0), chem_comp_bond, false);
+        }
+    }
+
+    const bondTable = Table.ofArrays(mmCIF_chemCompBond_schema, {
+        comp_id, atom_id_1, atom_id_2, value_order,
+        pdbx_aromatic_flag, pdbx_stereo_config, molstar_protonation_variant
+    });
+
+    const bondDatabase =  Database.ofTables(
+        CCB_TABLE_NAME,
+        { chem_comp_bond: mmCIF_chemCompBond_schema },
+        { chem_comp_bond: bondTable }
+    );
+
+    return { bonds: bondDatabase, atoms: atomsRequested ? createAtoms(ccd, pvcd) : void 0 };
+}
+
+function createAtoms(ccd: DatabaseCollection<CCD_Schema>, pvcd: DatabaseCollection<CCD_Schema>) {
+    const ccaSet = new Set<string>();
+
+    const comp_id: string[] = [];
+    const atom_id: string[] = [];
+    const charge: number[] = [];
+    const pdbx_stereo_config: typeof CCD_Schema.chem_comp_atom['pdbx_stereo_config']['T'][] = [];
+
+    function addAtoms(compId: string, cca: CCA) {
+        for (let i = 0, il = cca._rowCount; i < il; ++i) {
+            const atomId = cca.atom_id.value(i);
+            const k = ccaKey(compId, atomId);
+            if (!ccaSet.has(k)) {
+                atom_id.push(atomId);
+                comp_id.push(compId);
+                charge.push(cca.charge.value(i));
+                pdbx_stereo_config.push(cca.pdbx_stereo_config.value(i));
+                ccaSet.add(k);
+            }
+        }
+    }
+
+    // check adding atoms from PVCD
+    checkAddingAtomsFromPVCD(pvcd);
+
+    // add atoms from PVCD
+    for (const k in pvcd) {
+        const { chem_comp, chem_comp_atom } = pvcd[k];
+        if (chem_comp_atom._rowCount) {
+            const parentIds = chem_comp.mon_nstd_parent_comp_id.value(0);
+            if (parentIds.length === 0) {
+                addAtoms(chem_comp.id.value(0), chem_comp_atom);
+            } else {
+                for (let i = 0, il = parentIds.length; i < il; ++i) {
+                    addAtoms(parentIds[i], chem_comp_atom);
+                }
+            }
+        }
+    }
+
+    // add atoms from CCD
+    for (const k in ccd) {
+        const { chem_comp, chem_comp_atom } = ccd[k];
+        if (chem_comp_atom._rowCount) {
+            addAtoms(chem_comp.id.value(0), chem_comp_atom);
+        }
+    }
+
+    const atomTable = Table.ofArrays(ccd_chemCompAtom_schema, {
+        comp_id, atom_id, charge, pdbx_stereo_config
+    });
+
+    return Database.ofTables(
+        CCA_TABLE_NAME,
+        { chem_comp_atom: ccd_chemCompAtom_schema },
+        { chem_comp_atom: atomTable }
+    );
+}
+
+async function run(out: string, binary = false, forceDownload = false, ccaOut?: string) {
+    await ensureDataAvailable(forceDownload);
+    const ccd = await readCCD();
+    const pvcd = await readPVCD();
+
+    const { bonds, atoms } = await createBonds(ccd, pvcd, !!ccaOut);
+
+    const ccbCif = getEncodedCif(CCB_TABLE_NAME, bonds, binary);
+    if (!fs.existsSync(path.dirname(out))) {
+        fs.mkdirSync(path.dirname(out));
+    }
+    writeFile(out, ccbCif);
+
+    if (!!ccaOut) {
+        const ccaCif = getEncodedCif(CCA_TABLE_NAME, atoms, binary);
+        if (!fs.existsSync(path.dirname(ccaOut))) {
+            fs.mkdirSync(path.dirname(ccaOut));
+        }
+        writeFile(ccaOut, ccaCif);
+    }
+}
+
+const CCB_TABLE_NAME = 'CHEM_COMP_BONDS';
+const CCA_TABLE_NAME = 'CHEM_COMP_ATOMS';
+
+const parser = new argparse.ArgumentParser({
+    addHelp: true,
+    description: 'Create a cif file with one big table of all chem_comp_bond entries from the CCD and PVCD.'
+});
+parser.addArgument('out', {
+    help: 'Generated file output path.'
+});
+parser.addArgument([ '--forceDownload', '-f' ], {
+    action: 'storeTrue',
+    help: 'Force download of CCD and PVCD.'
+});
+parser.addArgument([ '--binary', '-b' ], {
+    action: 'storeTrue',
+    help: 'Output as BinaryCIF.'
+});
+parser.addArgument(['--ccaOut', '-a'], {
+    help: 'Optional generated file output path for chem_comp_atom data.',
+    required: false
+});
+interface Args {
+    out: string,
+    forceDownload?: boolean,
+    binary?: boolean,
+    ccaOut?: string
+}
+const args: Args = parser.parseArgs();
+
+run(args.out, args.binary, args.forceDownload, args.ccaOut);
--- a/src/cli/chem-comp-dict/util.ts
+++ b/src/cli/chem-comp-dict/util.ts
@@ -0,0 +1,75 @@
+/**
+ * Copyright (c) 2018-2020 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * @author Alexander Rose <alexander.rose@weirdbyte.de>
+ */
+
+import * as util from 'util';
+import * as path from 'path';
+import * as fs from 'fs';
+import * as zlib from 'zlib';
+import fetch from 'node-fetch';
+require('util.promisify').shim();
+const readFile = util.promisify(fs.readFile);
+const writeFile = util.promisify(fs.writeFile);
+
+import { Progress } from '../../mol-task';
+import { Database } from '../../mol-data/db';
+import { CIF } from '../../mol-io/reader/cif';
+import { CifWriter } from '../../mol-io/writer/cif';
+import { CCD_Schema } from '../../mol-io/reader/cif/schema/ccd';
+
+export async function ensureAvailable(path: string, url: string, forceDownload = false) {
+    if (forceDownload || !fs.existsSync(path)) {
+        console.log(`downloading ${url}...`);
+        const data = await fetch(url);
+        if (!fs.existsSync(DATA_DIR)) {
+            fs.mkdirSync(DATA_DIR);
+        }
+        if (url.endsWith('.gz')) {
+            await writeFile(path, zlib.gunzipSync(await data.buffer()));
+        } else {
+            await writeFile(path, await data.text());
+        }
+        console.log(`done downloading ${url}`);
+    }
+}
+
+export async function ensureDataAvailable(forceDownload = false) {
+    await ensureAvailable(CCD_PATH, CCD_URL, forceDownload);
+    await ensureAvailable(PVCD_PATH, PVCD_URL, forceDownload);
+}
+
+export async function readFileAsCollection<S extends Database.Schema>(path: string, schema: S) {
+    const parsed = await parseCif(await readFile(path, 'utf8'));
+    return CIF.toDatabaseCollection(schema, parsed.result);
+}
+
+export async function readCCD() {
+    return readFileAsCollection(CCD_PATH, CCD_Schema);
+}
+
+export async function readPVCD() {
+    return readFileAsCollection(PVCD_PATH, CCD_Schema);
+}
+
+async function parseCif(data: string | Uint8Array) {
+    const comp = CIF.parse(data);
+    console.time('parse cif');
+    const parsed = await comp.run(p => console.log(Progress.format(p)), 250);
+    console.timeEnd('parse cif');
+    if (parsed.isError) throw parsed;
+    return parsed;
+}
+
+export function getEncodedCif(name: string, database: Database<Database.Schema>, binary = false) {
+    const encoder = CifWriter.createEncoder({ binary, encoderName: 'mol*' });
+    CifWriter.Encoder.writeDatabase(encoder, name, database);
+    return encoder.getData();
+}
+
+const DATA_DIR = path.join(__dirname, '..', '..', '..', '..', 'build/data');
+const CCD_PATH = path.join(DATA_DIR, 'components.cif');
+const PVCD_PATH = path.join(DATA_DIR, 'aa-variants-v1.cif');
+const CCD_URL = 'http://ftp.wwpdb.org/pub/pdb/data/monomers/components.cif';
+const PVCD_URL = 'http://ftp.wwpdb.org/pub/pdb/data/monomers/aa-variants-v1.cif';
--- a/src/cli/cif2bcif/converter.ts
+++ b/src/cli/cif2bcif/converter.ts
@@ -0,0 +1,119 @@
+/**
+ * Copyright (c) 2017 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * @author David Sehnal <david.sehnal@gmail.com>
+ * @author Sebastian Bittrich <sebastian.bittrich@rcsb.org>
+ */
+
+import { CIF, CifCategory, getCifFieldType, CifField, CifFile } from '../../mol-io/reader/cif';
+import { CifWriter, EncodingStrategyHint } from '../../mol-io/writer/cif';
+import * as util from 'util';
+import * as fs from 'fs';
+import * as zlib from 'zlib';
+import { Progress, Task, RuntimeContext } from '../../mol-task';
+import { classifyFloatArray, classifyIntArray } from '../../mol-io/common/binary-cif';
+import { BinaryEncodingProvider } from '../../mol-io/writer/cif/encoder/binary';
+import { Category } from '../../mol-io/writer/cif/encoder';
+import { ReaderResult } from '../../mol-io/reader/result';
+
+function showProgress(p: Progress) {
+    process.stdout.write(`\r${new Array(80).join(' ')}`);
+    process.stdout.write(`\r${Progress.format(p)}`);
+}
+
+const readFileAsync = util.promisify(fs.readFile);
+const unzipAsync = util.promisify<zlib.InputType, Buffer>(zlib.unzip);
+
+async function readFile(ctx: RuntimeContext, filename: string): Promise<ReaderResult<CifFile>> {
+    const isGz = /\.gz$/i.test(filename);
+    if (filename.match(/\.bcif/)) {
+        let input = await readFileAsync(filename);
+        if (isGz) input = await unzipAsync(input);
+        return await CIF.parseBinary(new Uint8Array(input)).runInContext(ctx);
+    } else {
+        let str: string;
+        if (isGz) {
+            const data = await unzipAsync(await readFileAsync(filename));
+            str = data.toString('utf8');
+        } else {
+            str = await readFileAsync(filename, 'utf8');
+        }
+        return await CIF.parseText(str).runInContext(ctx);
+    }
+}
+
+async function getCIF(ctx: RuntimeContext, filename: string) {
+    const parsed = await readFile(ctx, filename);
+    if (parsed.isError) {
+        throw new Error(parsed.toString());
+    }
+    return parsed.result;
+}
+
+function getCategoryInstanceProvider(cat: CifCategory, fields: CifWriter.Field[]): CifWriter.Category {
+    return {
+        name: cat.name,
+        instance: () => CifWriter.categoryInstance(fields, { data: cat, rowCount: cat.rowCount })
+    };
+}
+
+function classify(name: string, field: CifField): CifWriter.Field {
+    const type = getCifFieldType(field);
+    if (type['@type'] === 'str') {
+        return { name, type: CifWriter.Field.Type.Str, value: field.str, valueKind: field.valueKind };
+    } else if (type['@type'] === 'float') {
+        const encoder = classifyFloatArray(field.toFloatArray({ array: Float64Array }));
+        return CifWriter.Field.float(name, field.float, { valueKind: field.valueKind, encoder, typedArray: Float64Array });
+    } else {
+        const encoder = classifyIntArray(field.toIntArray({ array: Int32Array }));
+        return CifWriter.Field.int(name, field.int, { valueKind: field.valueKind, encoder, typedArray: Int32Array });
+    }
+}
+
+export function convert(path: string, asText = false, hints?: EncodingStrategyHint[], filter?: string) {
+    return Task.create<Uint8Array>('BinaryCIF', async ctx => {
+        const encodingProvider: BinaryEncodingProvider = hints
+            ? CifWriter.createEncodingProviderFromJsonConfig(hints)
+            : { get: (c, f) => void 0 };
+        const cif = await getCIF(ctx, path);
+
+        const encoder = CifWriter.createEncoder({
+            binary: !asText,
+            encoderName: 'mol*/ciftools cif2bcif',
+            binaryAutoClassifyEncoding: true,
+            binaryEncodingPovider: encodingProvider
+        });
+
+        if (filter) {
+            encoder.setFilter(Category.filterOf(filter));
+        }
+
+        let maxProgress = 0;
+        for (const b of cif.blocks) {
+            maxProgress += b.categoryNames.length;
+            for (const c of b.categoryNames) maxProgress += b.categories[c].fieldNames.length;
+        }
+
+        let current = 0;
+        for (const b of cif.blocks) {
+            encoder.startDataBlock(b.header);
+            for (const c of b.categoryNames) {
+                const cat = b.categories[c];
+                const fields: CifWriter.Field[] = [];
+                for (const f of cat.fieldNames) {
+                    fields.push(classify(f, cat.getField(f)!));
+                    current++;
+                    if (ctx.shouldUpdate) await ctx.update({ message: 'Encoding...', current, max: maxProgress });
+                }
+
+                encoder.writeCategory(getCategoryInstanceProvider(b.categories[c], fields));
+                current++;
+                if (ctx.shouldUpdate) await ctx.update({ message: 'Encoding...', current, max: maxProgress });
+            }
+        }
+        await ctx.update('Exporting...');
+        const ret = encoder.getData() as Uint8Array;
+        await ctx.update('Done.\n');
+        return ret;
+    }).run(showProgress, 250);
+}
--- a/src/cli/cif2bcif/index.ts
+++ b/src/cli/cif2bcif/index.ts
@@ -0,0 +1,68 @@
+#!/usr/bin/env node
+/**
+ * Copyright (c) 2017-2019 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * @author David Sehnal <david.sehnal@gmail.com>
+ * @author Alexander Rose <alexander.rose@weirdbyte.de>
+ */
+
+import * as argparse from 'argparse';
+import * as util from 'util';
+import * as fs from 'fs';
+import * as zlib from 'zlib';
+import { convert } from './converter';
+
+require('util.promisify').shim();
+
+async function process(srcPath: string, outPath: string, configPath?: string, filterPath?: string) {
+    const config = configPath ? JSON.parse(fs.readFileSync(configPath, 'utf8')) : void 0;
+    const filter = filterPath ? fs.readFileSync(filterPath, 'utf8') : void 0;
+
+    const res = await convert(srcPath, false, config, filter);
+    await write(outPath, res);
+}
+
+const zipAsync = util.promisify<zlib.InputType, Buffer>(zlib.gzip);
+
+async function write(outPath: string, res: Uint8Array) {
+    const isGz = /\.gz$/i.test(outPath);
+    if (isGz) {
+        res = await zipAsync(res);
+    }
+    fs.writeFileSync(outPath, res);
+}
+
+function run(args: Args) {
+    process(args.src, args.out, args.config, args.filter);
+}
+
+const parser = new argparse.ArgumentParser({
+    addHelp: true,
+    description: 'Convert any CIF file to a BCIF file'
+});
+parser.addArgument([ 'src' ], {
+    help: 'Source CIF path'
+});
+parser.addArgument([ 'out' ], {
+    help: 'Output BCIF path'
+});
+parser.addArgument([ '-c', '--config' ], {
+    help: 'Optional encoding strategy/precision config path',
+    required: false
+});
+parser.addArgument([ '-f', '--filter' ], {
+    help: 'Optional filter whitelist/blacklist path',
+    required: false
+});
+
+interface Args {
+    src: string
+    out: string
+    config?: string
+    filter?: string
+}
+const args: Args = parser.parseArgs();
+
+if (args) {
+    run(args);
+}
--- a/src/cli/cifschema/index.ts
+++ b/src/cli/cifschema/index.ts
@@ -0,0 +1,275 @@
+#!/usr/bin/env node
+/**
+ * Copyright (c) 2017-2020 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * @author Alexander Rose <alexander.rose@weirdbyte.de>
+ */
+
+import * as argparse from 'argparse';
+import * as fs from 'fs';
+import * as path from 'path';
+import fetch from 'node-fetch';
+
+import { parseCsv } from '../../mol-io/reader/csv/parser';
+import { CifFrame, CifBlock } from '../../mol-io/reader/cif';
+import { parseCifText } from '../../mol-io/reader/cif/text/parser';
+import { generateSchema } from './util/cif-dic';
+import { generate } from './util/generate';
+import { Filter, Database } from './util/schema';
+import { parseImportGet } from './util/helper';
+
+function getDicVersion(block: CifBlock) {
+    return block.categories.dictionary.getField('version')!.str(0);
+}
+
+function getDicNamespace(block: CifBlock) {
+    return block.categories.dictionary.getField('namespace')!.str(0);
+}
+
+async function runGenerateSchemaMmcif(name: string, fieldNamesPath: string, typescript = false, out: string, moldbImportPath: string, addAliases: boolean) {
+    await ensureMmcifDicAvailable();
+    const mmcifDic = await parseCifText(fs.readFileSync(MMCIF_DIC_PATH, 'utf8')).run();
+    if (mmcifDic.isError) throw mmcifDic;
+
+    await ensureIhmDicAvailable();
+    const ihmDic = await parseCifText(fs.readFileSync(IHM_DIC_PATH, 'utf8')).run();
+    if (ihmDic.isError) throw ihmDic;
+
+    await ensureCarbBranchDicAvailable();
+    const carbBranchDic = await parseCifText(fs.readFileSync(CARB_BRANCH_DIC_PATH, 'utf8')).run();
+    if (carbBranchDic.isError) throw carbBranchDic;
+
+    await ensureCarbCompDicAvailable();
+    const carbCompDic = await parseCifText(fs.readFileSync(CARB_COMP_DIC_PATH, 'utf8')).run();
+    if (carbCompDic.isError) throw carbCompDic;
+
+    const mmcifDicVersion = getDicVersion(mmcifDic.result.blocks[0]);
+    const ihmDicVersion = getDicVersion(ihmDic.result.blocks[0]);
+    const carbDicVersion = 'draft';
+    const version = `Dictionary versions: mmCIF ${mmcifDicVersion}, IHM ${ihmDicVersion}, CARB ${carbDicVersion}.`;
+
+    const frames: CifFrame[] = [...mmcifDic.result.blocks[0].saveFrames, ...ihmDic.result.blocks[0].saveFrames, ...carbBranchDic.result.blocks[0].saveFrames, ...carbCompDic.result.blocks[0].saveFrames];
+    const schema = generateSchema(frames);
+
+    await runGenerateSchema(name, version, schema, fieldNamesPath, typescript, out, moldbImportPath, addAliases);
+}
+
+async function runGenerateSchemaCifCore(name: string, fieldNamesPath: string, typescript = false, out: string, moldbImportPath: string, addAliases: boolean) {
+    await ensureCifCoreDicAvailable();
+    const cifCoreDic = await parseCifText(fs.readFileSync(CIF_CORE_DIC_PATH, 'utf8')).run();
+    if (cifCoreDic.isError) throw cifCoreDic;
+
+    const cifCoreDicVersion = getDicVersion(cifCoreDic.result.blocks[0]);
+    const version = `Dictionary versions: CifCore ${cifCoreDicVersion}.`;
+
+    const frames: CifFrame[] = [...cifCoreDic.result.blocks[0].saveFrames];
+    const imports = await resolveImports(frames, DIC_DIR);
+    const schema = generateSchema(frames, imports);
+
+    await runGenerateSchema(name, version, schema, fieldNamesPath, typescript, out, moldbImportPath, addAliases);
+}
+
+async function resolveImports(frames: CifFrame[], baseDir: string): Promise<Map<string, CifFrame[]>> {
+    const imports = new Map<string, CifFrame[]>();
+
+    for (const d of frames) {
+        if ('import' in d.categories) {
+            const importGet = parseImportGet(d.categories['import'].getField('get')!.str(0));
+            for (const g of importGet) {
+                const { file } = g;
+                if (!file) continue;
+                if (imports.has(file)) continue;
+
+                const dic = await parseCifText(fs.readFileSync(path.join(baseDir, file), 'utf8')).run();
+                if (dic.isError) throw dic;
+
+                imports.set(file, [...dic.result.blocks[0].saveFrames]);
+            }
+        }
+    }
+
+    return imports;
+}
+
+async function runGenerateSchemaDic(name: string, dicPath: string, fieldNamesPath: string, typescript = false, out: string, moldbImportPath: string, addAliases: boolean) {
+    const dic = await parseCifText(fs.readFileSync(dicPath, 'utf8')).run();
+    if (dic.isError) throw dic;
+
+    const dicVersion = getDicVersion(dic.result.blocks[0]);
+    const dicName = getDicNamespace(dic.result.blocks[0]);
+    const version = `Dictionary versions: ${dicName} ${dicVersion}.`;
+
+    const frames: CifFrame[] = [...dic.result.blocks[0].saveFrames];
+    const imports = await resolveImports(frames, path.dirname(dicPath));
+    const schema = generateSchema(frames, imports);
+
+    await runGenerateSchema(name, version, schema, fieldNamesPath, typescript, out, moldbImportPath, addAliases);
+}
+
+async function runGenerateSchema(name: string, version: string, schema: Database, fieldNamesPath: string, typescript = false, out: string, moldbImportPath: string, addAliases: boolean) {
+    const filter = fieldNamesPath ? await getFieldNamesFilter(fieldNamesPath) : undefined;
+    const output = typescript ? generate(name, version, schema, filter, moldbImportPath, addAliases) : JSON.stringify(schema, undefined, 4);
+
+    if (out) {
+        fs.writeFileSync(out, output);
+    } else {
+        console.log(output);
+    }
+}
+
+async function getFieldNamesFilter(fieldNamesPath: string): Promise<Filter> {
+    const fieldNamesStr = fs.readFileSync(fieldNamesPath, 'utf8');
+    const parsed = await parseCsv(fieldNamesStr, { noColumnNames: true }).run();
+    if (parsed.isError) throw parser.error;
+    const csvFile = parsed.result;
+
+    const fieldNamesCol = csvFile.table.getColumn('0');
+    if (!fieldNamesCol) throw 'error getting fields columns';
+    const fieldNames = fieldNamesCol.toStringArray();
+
+    const filter: Filter = {};
+    fieldNames.forEach((name, i) => {
+        const [ category, field ] = name.split('.');
+        // console.log(category, field)
+        if (!filter[ category ]) filter[ category ] = {};
+        filter[ category ][ field ] = true;
+    });
+    return filter;
+}
+
+async function ensureMmcifDicAvailable() { await ensureDicAvailable(MMCIF_DIC_PATH, MMCIF_DIC_URL); }
+async function ensureIhmDicAvailable() { await ensureDicAvailable(IHM_DIC_PATH, IHM_DIC_URL); }
+async function ensureCarbBranchDicAvailable() { await ensureDicAvailable(CARB_BRANCH_DIC_PATH, CARB_BRANCH_DIC_URL); }
+async function ensureCarbCompDicAvailable() { await ensureDicAvailable(CARB_COMP_DIC_PATH, CARB_COMP_DIC_URL); }
+async function ensureCifCoreDicAvailable() {
+    await ensureDicAvailable(CIF_CORE_DIC_PATH, CIF_CORE_DIC_URL);
+    await ensureDicAvailable(CIF_CORE_ENUM_PATH, CIF_CORE_ENUM_URL);
+    await ensureDicAvailable(CIF_CORE_ATTR_PATH, CIF_CORE_ATTR_URL);
+}
+
+async function ensureDicAvailable(dicPath: string, dicUrl: string) {
+    if (FORCE_DIC_DOWNLOAD || !fs.existsSync(dicPath)) {
+        const name = dicUrl.substr(dicUrl.lastIndexOf('/') + 1);
+        console.log(`downloading ${name}...`);
+        const data = await fetch(dicUrl);
+        if (!fs.existsSync(DIC_DIR)) {
+            fs.mkdirSync(DIC_DIR);
+        }
+        fs.writeFileSync(dicPath, await data.text());
+        console.log(`done downloading ${name}`);
+    }
+}
+
+const DIC_DIR = path.resolve(__dirname, '../../../../build/dics/');
+const MMCIF_DIC_PATH = `${DIC_DIR}/mmcif_pdbx_v50.dic`;
+const MMCIF_DIC_URL = 'http://mmcif.wwpdb.org/dictionaries/ascii/mmcif_pdbx_v50.dic';
+const IHM_DIC_PATH = `${DIC_DIR}/ihm-extension.dic`;
+const IHM_DIC_URL = 'https://raw.githubusercontent.com/ihmwg/IHM-dictionary/master/ihm-extension.dic';
+const CARB_BRANCH_DIC_PATH = `${DIC_DIR}/entity_branch-extension.dic`;
+const CARB_BRANCH_DIC_URL = 'https://raw.githubusercontent.com/pdbxmmcifwg/carbohydrate-extension/master/dict/entity_branch-extension.dic';
+const CARB_COMP_DIC_PATH = `${DIC_DIR}/chem_comp-extension.dic`;
+const CARB_COMP_DIC_URL = 'https://raw.githubusercontent.com/pdbxmmcifwg/carbohydrate-extension/master/dict/chem_comp-extension.dic';
+
+const CIF_CORE_DIC_PATH = `${DIC_DIR}/cif_core.dic`;
+const CIF_CORE_DIC_URL = 'https://raw.githubusercontent.com/COMCIFS/cif_core/master/cif_core.dic';
+const CIF_CORE_ENUM_PATH = `${DIC_DIR}/templ_enum.cif`;
+const CIF_CORE_ENUM_URL = 'https://raw.githubusercontent.com/COMCIFS/cif_core/master/templ_enum.cif';
+const CIF_CORE_ATTR_PATH = `${DIC_DIR}/templ_attr.cif`;
+const CIF_CORE_ATTR_URL = 'https://raw.githubusercontent.com/COMCIFS/cif_core/master/templ_attr.cif';
+
+const parser = new argparse.ArgumentParser({
+    addHelp: true,
+    description: 'Create schema from mmcif dictionary (v50 plus IHM and entity_branch extensions, downloaded from wwPDB)'
+});
+parser.addArgument([ '--preset', '-p' ], {
+    defaultValue: '',
+    choices: ['', 'mmCIF', 'CCD', 'BIRD', 'CifCore'],
+    help: 'Preset name'
+});
+parser.addArgument([ '--name', '-n' ], {
+    defaultValue: '',
+    help: 'Schema name'
+});
+parser.addArgument([ '--out', '-o' ], {
+    help: 'Generated schema output path, if not given printed to stdout'
+});
+parser.addArgument([ '--targetFormat', '-tf' ], {
+    defaultValue: 'typescript-molstar',
+    choices: ['typescript-molstar', 'json-internal'],
+    help: 'Target format'
+});
+parser.addArgument([ '--dicPath', '-d' ], {
+    defaultValue: '',
+    help: 'Path to dictionary'
+});
+parser.addArgument([ '--fieldNamesPath', '-fn' ], {
+    defaultValue: '',
+    help: 'Field names to include'
+});
+parser.addArgument([ '--forceDicDownload', '-f' ], {
+    action: 'storeTrue',
+    help: 'Force download of dictionaries'
+});
+parser.addArgument([ '--moldataImportPath', '-mip' ], {
+    defaultValue: 'molstar/lib/mol-data',
+    help: 'mol-data import path (for typescript target only)'
+});
+parser.addArgument([ '--addAliases', '-aa' ], {
+    action: 'storeTrue',
+    help: 'Add field name/path aliases'
+});
+interface Args {
+    name: string
+    preset: '' | 'mmCIF' | 'CCD' | 'BIRD' | 'CifCore'
+    forceDicDownload: boolean
+    dic: '' | 'mmCIF' | 'CifCore'
+    dicPath: string,
+    fieldNamesPath: string
+    targetFormat: 'typescript-molstar' | 'json-internal'
+    out: string,
+    moldataImportPath: string
+    addAliases: boolean
+}
+const args: Args = parser.parseArgs();
+
+const FORCE_DIC_DOWNLOAD = args.forceDicDownload;
+
+switch (args.preset) {
+    case 'mmCIF':
+        args.name = 'mmCIF';
+        args.dic = 'mmCIF';
+        args.fieldNamesPath = path.resolve(__dirname, '../../../../data/cif-field-names/mmcif-field-names.csv');
+        break;
+    case 'CCD':
+        args.name = 'CCD';
+        args.dic = 'mmCIF';
+        args.fieldNamesPath = path.resolve(__dirname, '../../../../data/cif-field-names/ccd-field-names.csv');
+        break;
+    case 'BIRD':
+        args.name = 'BIRD';
+        args.dic = 'mmCIF';
+        args.fieldNamesPath = path.resolve(__dirname, '../../../../data/cif-field-names/bird-field-names.csv');
+        break;
+    case 'CifCore':
+        args.name = 'CifCore';
+        args.dic = 'CifCore';
+        args.fieldNamesPath = path.resolve(__dirname, '../../../../data/cif-field-names/cif-core-field-names.csv');
+        break;
+}
+
+if (args.name) {
+    const typescript = args.targetFormat === 'typescript-molstar';
+    if (args.dicPath) {
+        runGenerateSchemaDic(args.name, args.dicPath, args.fieldNamesPath, typescript, args.out, args.moldataImportPath, args.addAliases).catch(e => {
+            console.error(e);
+        });
+    } else if (args.dic === 'mmCIF') {
+        runGenerateSchemaMmcif(args.name, args.fieldNamesPath, typescript, args.out, args.moldataImportPath, args.addAliases).catch(e => {
+            console.error(e);
+        });
+    } else if (args.dic === 'CifCore') {
+        runGenerateSchemaCifCore(args.name, args.fieldNamesPath, typescript, args.out, args.moldataImportPath, args.addAliases).catch(e => {
+            console.error(e);
+        });
+    }
+}
--- a/src/cli/cifschema/util/cif-dic.ts
+++ b/src/cli/cifschema/util/cif-dic.ts
@@ -0,0 +1,475 @@
+/**
+ * Copyright (c) 2017-2018 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * @author Alexander Rose <alexander.rose@weirdbyte.de>
+ */
+
+import { Database, Column, EnumCol, StrCol, IntCol, ListCol, FloatCol, CoordCol, MatrixCol, VectorCol } from './schema';
+import { parseImportGet } from './helper';
+import * as Data from '../../../mol-io/reader/cif/data-model';
+import { CifFrame } from '../../../mol-io/reader/cif/data-model';
+
+export function getFieldType(type: string, description: string, values?: string[], container?: string): Column {
+    switch (type) {
+        // mmCIF
+        case 'code':
+        case 'ucode':
+        case 'line':
+        case 'uline':
+        case 'text':
+        case 'char':
+        case 'uchar3':
+        case 'uchar1':
+        case 'boolean':
+            return values && values.length ? EnumCol(values, 'str', description) : StrCol(description);
+        case 'aliasname':
+        case 'name':
+        case 'idname':
+        case 'any':
+        case 'atcode':
+        case 'fax':
+        case 'phone':
+        case 'email':
+        case 'code30':
+        case 'seq-one-letter-code':
+        case 'author':
+        case 'orcid_id':
+        case 'sequence_dep':
+        case 'pdb_id':
+        case 'emd_id':
+        // todo, consider adding specialised fields
+        case 'yyyy-mm-dd':
+        case 'yyyy-mm-dd:hh:mm':
+        case 'yyyy-mm-dd:hh:mm-flex':
+        case 'int-range':
+        case 'float-range':
+        case 'binary':
+        case 'operation_expression':
+        case 'point_symmetry':
+        case '4x3_matrix':
+        case '3x4_matrices':
+        case 'point_group':
+        case 'point_group_helical':
+        case 'symmetry_operation':
+        case 'date_dep':
+        case 'url':
+        case 'symop':
+        case 'exp_data_doi':
+        case 'asym_id':
+            return StrCol(description);
+        case 'int':
+        case 'non_negative_int':
+        case 'positive_int':
+            return values && values.length ? EnumCol(values, 'int', description) : IntCol(description);
+        case 'float':
+            return FloatCol(description);
+        case 'ec-type':
+        case 'ucode-alphanum-csv':
+        case 'id_list':
+            return ListCol('str', ',', description);
+        case 'id_list_spc':
+            return ListCol('str', ' ', description);
+
+        // cif
+        case 'Text':
+        case 'Code':
+        case 'Complex':
+        case 'Symop':
+        case 'List':
+        case 'List(Real,Real)':
+        case 'List(Real,Real,Real,Real)':
+        case 'Date':
+        case 'Datetime':
+        case 'Tag':
+        case 'Implied':
+            return wrapContainer('str', ',', description, container);
+        case 'Real':
+            return wrapContainer('float', ',', description, container);
+        case 'Integer':
+            return wrapContainer('int', ',', description, container);
+
+    }
+    console.log(`unknown type '${type}'`);
+    return StrCol(description);
+}
+
+function ColFromType(type: 'int' | 'str' | 'float' | 'coord', description: string): Column {
+    switch (type) {
+        case 'int': return IntCol(description);
+        case 'str': return StrCol(description);
+        case 'float': return FloatCol(description);
+        case 'coord': return CoordCol(description);
+    }
+}
+
+function wrapContainer(type: 'int' | 'str' | 'float' | 'coord', separator: string, description: string, container?: string) {
+    return container && container === 'List' ? ListCol(type, separator, description) : ColFromType(type, description);
+}
+
+type FrameCategories = { [category: string]: Data.CifFrame }
+type FrameLinks = { [k: string]: string }
+
+interface FrameData {
+    categories: FrameCategories
+    links: FrameLinks
+}
+
+type Imports = Map<string, CifFrame[]>
+
+function getImportFrames(d: Data.CifFrame, imports: Imports) {
+    const frames: Data.CifFrame[] = [];
+    if (!('import' in d.categories)) return frames;
+
+    const importGet = parseImportGet(d.categories['import'].getField('get')!.str(0));
+    for (const g of importGet) {
+        const { file, save } = g;
+        if (!file || !save) {
+            console.warn(`missing 'save' or 'file' for import in '${d.header}'`);
+            continue;
+        }
+        const importFrames = imports.get(file);
+        if (!importFrames) {
+            console.warn(`missing '${file}' entry in imports`);
+            continue;
+        }
+        const importSave = importFrames.find(id => id.header.toLowerCase() === save.toLowerCase());
+        if (!importSave) {
+            console.warn(`missing '${save}' save frame in '${file}'`);
+            continue;
+        }
+
+        frames.push(importSave);
+    }
+
+    return frames;
+}
+
+/** get field from given or linked category */
+function getField(category: string, field: string, d: Data.CifFrame, imports: Imports, ctx: FrameData): Data.CifField|undefined {
+    const { categories, links } = ctx;
+    const cat = d.categories[category];
+    if (cat) {
+        return cat.getField(field);
+    } else if (d.header in links) {
+        const linkName = links[d.header];
+        if (linkName in categories) {
+            return getField(category, field, categories[linkName], imports, ctx);
+        } else {
+            // console.log(`link '${linkName}' not found`)
+        }
+    } else {
+        const importFrames = getImportFrames(d, imports);
+        for (const idf of importFrames) {
+            return getField(category, field, idf, imports, ctx);
+        }
+    }
+}
+
+function getEnums(d: Data.CifFrame, imports: Imports, ctx: FrameData) {
+    const value = getField('item_enumeration', 'value', d, imports, ctx);
+    const enums: string[] = [];
+    if (value) {
+        for (let i = 0; i < value.rowCount; ++i) {
+            enums.push(value.str(i));
+            // console.log(value.str(i))
+        }
+        return enums;
+    } else {
+        // console.log(`item_enumeration.value not found for '${d.header}'`)
+    }
+}
+
+function getContainer(d: Data.CifFrame, imports: Imports, ctx: FrameData) {
+    const value = getField('type', 'container', d, imports, ctx);
+    return value ? value.str(0) : undefined;
+}
+
+function getCode(d: Data.CifFrame, imports: Imports, ctx: FrameData): [string, string[] | undefined, string | undefined ] | undefined {
+    const code = getField('item_type', 'code', d, imports, ctx) || getField('type', 'contents', d, imports, ctx);
+    if (code) {
+        return [ code.str(0), getEnums(d, imports, ctx), getContainer(d, imports, ctx) ];
+    } else {
+        console.log(`item_type.code or type.contents not found for '${d.header}'`);
+    }
+}
+
+function getSubCategory(d: Data.CifFrame, imports: Imports, ctx: FrameData): string | undefined {
+    const value = getField('item_sub_category', 'id', d, imports, ctx);
+    if (value) {
+        return value.str(0);
+    }
+}
+
+function getDescription(d: Data.CifFrame, imports: Imports, ctx: FrameData): string | undefined {
+    const value = getField('item_description', 'description', d, imports, ctx) || getField('description', 'text', d, imports, ctx);
+    if (value) {
+        // trim (after newlines) and remove references to square brackets
+        return value.str(0).trim()
+            .replace(/(\r\n|\r|\n)([ \t]+)/g, '\n')
+            .replace(/(\[[1-3]\])+ element/, 'elements')
+            .replace(/(\[[1-3]\])+/, '');
+    }
+}
+
+function getAliases(d: Data.CifFrame, imports: Imports, ctx: FrameData): string[] | undefined {
+    const value = getField('item_aliases', 'alias_name', d, imports, ctx) || getField('alias', 'definition_id', d, imports, ctx);
+    return value ? value.toStringArray().map(v => v.substr(1)) : undefined;
+}
+
+const reMatrixField = /\[[1-3]\]\[[1-3]\]/;
+const reVectorField = /\[[1-3]\]/;
+
+const FORCE_INT_FIELDS = [
+    '_atom_site.id',
+    '_atom_site.auth_seq_id',
+    '_atom_site_anisotrop.id',
+    '_pdbx_struct_mod_residue.auth_seq_id',
+    '_struct_conf.beg_auth_seq_id',
+    '_struct_conf.end_auth_seq_id',
+    '_struct_conn.ptnr1_auth_seq_id',
+    '_struct_conn.ptnr2_auth_seq_id',
+    '_struct_sheet_range.beg_auth_seq_id',
+    '_struct_sheet_range.end_auth_seq_id',
+];
+
+const FORCE_MATRIX_FIELDS_MAP: { [k: string]: string } = {
+    'atom_site_aniso.U_11': 'U',
+    'atom_site_aniso.U_22': 'U',
+    'atom_site_aniso.U_33': 'U',
+    'atom_site_aniso.U_23': 'U',
+    'atom_site_aniso.U_13': 'U',
+    'atom_site_aniso.U_12': 'U',
+    'atom_site_aniso.U_11_su': 'U_su',
+    'atom_site_aniso.U_22_su': 'U_su',
+    'atom_site_aniso.U_33_su': 'U_su',
+    'atom_site_aniso.U_23_su': 'U_su',
+    'atom_site_aniso.U_13_su': 'U_su',
+    'atom_site_aniso.U_12_su': 'U_su',
+};
+const FORCE_MATRIX_FIELDS = Object.keys(FORCE_MATRIX_FIELDS_MAP);
+
+const EXTRA_ALIASES: Database['aliases'] = {
+    'atom_site_aniso.U': [
+        'atom_site_anisotrop_U'
+    ],
+    'atom_site_aniso.U_su': [
+        'atom_site_aniso_U_esd',
+        'atom_site_anisotrop_U_esd',
+    ],
+};
+
+const COMMA_SEPARATED_LIST_FIELDS = [
+    '_atom_site.pdbx_struct_group_id',
+    '_chem_comp.mon_nstd_parent_comp_id',
+    '_diffrn_radiation.pdbx_wavelength_list',
+    '_diffrn_source.pdbx_wavelength_list',
+    '_em_diffraction.tilt_angle_list', // 20,40,50,55
+    '_em_entity_assembly.entity_id_list',
+    '_entity.pdbx_description', // Endolysin,Beta-2 adrenergic receptor
+    '_entity.pdbx_ec',
+    '_entity_poly.pdbx_strand_id', // A,B
+    '_entity_src_gen.pdbx_gene_src_gene', // ADRB2, ADRB2R, B2AR
+    '_pdbx_depui_entry_details.experimental_methods',
+    '_pdbx_depui_entry_details.requested_accession_types',
+    '_pdbx_soln_scatter_model.software_list', // INSIGHT II, HOMOLOGY, DISCOVERY, BIOPOLYMER, DELPHI
+    '_pdbx_soln_scatter_model.software_author_list', // MSI
+    '_pdbx_soln_scatter_model.entry_fitting_list', // Odd example: 'PDB CODE 1HFI, 1HCC, 1HFH, 1VCC'
+    '_pdbx_struct_assembly_gen.entity_inst_id',
+    '_pdbx_struct_assembly_gen.asym_id_list',
+    '_pdbx_struct_assembly_gen.auth_asym_id_list',
+    '_pdbx_struct_assembly_gen_depositor_info.asym_id_list',
+    '_pdbx_struct_assembly_gen_depositor_info.chain_id_list',
+    '_pdbx_struct_group_list.group_enumeration_type',
+    '_reflns.pdbx_diffrn_id',
+    '_refine.pdbx_diffrn_id',
+    '_reflns_shell.pdbx_diffrn_id',
+    '_struct_keywords.text',
+];
+
+const SPACE_SEPARATED_LIST_FIELDS = [
+    '_chem_comp.pdbx_subcomponent_list', // TSM DPH HIS CHF EMR
+    '_pdbx_soln_scatter.data_reduction_software_list', // OTOKO
+    '_pdbx_soln_scatter.data_analysis_software_list', // SCTPL5 GNOM
+];
+
+const SEMICOLON_SEPARATED_LIST_FIELDS = [
+    '_chem_comp.pdbx_synonyms' // GLYCERIN; PROPANE-1,2,3-TRIOL
+];
+
+/**
+ * Useful when a dictionary extension will add enum values to an existing dictionary.
+ * By adding them here, the dictionary extension can be tested before the added enum
+ * values are available in the existing dictionary.
+ */
+const EXTRA_ENUM_VALUES: { [k: string]: string[] } = {
+
+};
+
+export function generateSchema(frames: CifFrame[], imports: Imports = new Map()): Database {
+    const tables: Database['tables'] = {};
+    const aliases: Database['aliases'] = { ...EXTRA_ALIASES };
+
+    const categories: FrameCategories = {};
+    const links: FrameLinks = {};
+    const ctx = { categories, links };
+
+    // get category metadata
+    frames.forEach(d => {
+        // category definitions in mmCIF start with '_' and don't include a '.'
+        // category definitions in cifCore don't include a '.'
+        if (d.header[0] === '_'  || d.header.includes('.')) return;
+        const categoryName = d.header.toLowerCase();
+        // console.log(d.header, d.categoryNames, d.categories)
+        let descriptionField: Data.CifField | undefined;
+        const categoryKeyNames = new Set<string>();
+
+        if ('category' in d.categories && 'category_key' in d.categories) {
+            const category = d.categories['category'];
+            const categoryKey = d.categories['category_key'];
+            if (categoryKey) {
+                const categoryKey_names = categoryKey.getField('name');
+                if (categoryKey_names) {
+                    for (let i = 0, il = categoryKey_names.rowCount; i < il; ++i) {
+                        categoryKeyNames.add(categoryKey_names.str(i));
+                    }
+                }
+            }
+
+            descriptionField = category.getField('description');
+
+            if (categoryKeyNames.size === 0) {
+                console.log(`no key given for category '${categoryName}'`);
+            }
+        }
+
+        if ('description' in d.categories) {
+            descriptionField = d.categories['description'].getField('text');
+        }
+
+        let description = '';
+        if (descriptionField) {
+            description = descriptionField.str(0).trim()
+                .replace(/(\r\n|\r|\n)([ \t]+)/g, '\n'); // remove padding after newlines
+        } else {
+            console.log(`no description given for category '${categoryName}'`);
+        }
+
+        tables[categoryName] = { description, key: categoryKeyNames, columns: {} };
+
+        // console.log('++++++++++++++++++++++++++++++++++++++++++')
+        // console.log('name', categoryName)
+        // console.log('desc', description)
+        // console.log('key', categoryKeyNames)
+    });
+
+    // build list of links between categories
+    frames.forEach(d => {
+        if (d.header[0] !== '_' && !d.header.includes('.')) return;
+        categories[d.header] = d;
+        const item_linked = d.categories['item_linked'];
+        if (item_linked) {
+            const child_name = item_linked.getField('child_name');
+            const parent_name = item_linked.getField('parent_name');
+            if (child_name && parent_name) {
+                for (let i = 0; i < item_linked.rowCount; ++i) {
+                    const childName = child_name.str(i);
+                    const parentName = parent_name.str(i);
+                    if (childName in links && links[childName] !== parentName) {
+                        console.log(`${childName} linked to ${links[childName]}, ignoring link to ${parentName}`);
+                    }
+                    links[childName] = parentName;
+                }
+            }
+        }
+    });
+
+    // get field data
+    Object.keys(categories).forEach(fullName => {
+        const d = categories[fullName];
+        if (!d) {
+            console.log(`'${fullName}' not found, moving on`);
+            return;
+        }
+
+        const categoryName = d.header.substring(d.header[0] === '_' ? 1 : 0, d.header.indexOf('.'));
+        const itemName = d.header.substring(d.header.indexOf('.') + 1);
+        let fields: { [k: string]: Column };
+        if (categoryName in tables) {
+            fields = tables[categoryName].columns;
+            tables[categoryName].key.add(itemName);
+        } else if (categoryName.toLowerCase() in tables) {
+            // take case from category name in 'field' data as it is better if data is from cif dictionaries
+            tables[categoryName] = tables[categoryName.toLowerCase()];
+            fields = tables[categoryName].columns;
+        } else {
+            console.log(`category '${categoryName}' has no metadata`);
+            fields = {};
+            tables[categoryName] = {
+                description: '',
+                key: new Set(),
+                columns: fields
+            };
+        }
+
+        const itemAliases = getAliases(d, imports, ctx);
+        if (itemAliases) aliases[`${categoryName}.${itemName}`] = itemAliases;
+
+        const description = getDescription(d, imports, ctx) || '';
+
+        // need to use regex to check for matrix or vector items
+        // as sub_category assignment is missing for some entries
+        const subCategory = getSubCategory(d, imports, ctx);
+        if (subCategory === 'cartesian_coordinate' || subCategory === 'fractional_coordinate') {
+            fields[itemName] = CoordCol(description);
+        } else if (FORCE_INT_FIELDS.includes(d.header)) {
+            fields[itemName] = IntCol(description);
+            console.log(`forcing int: ${d.header}`);
+        } else if (FORCE_MATRIX_FIELDS.includes(d.header)) {
+            fields[itemName] = FloatCol(description);
+            fields[FORCE_MATRIX_FIELDS_MAP[d.header]] = MatrixCol(3, 3, description);
+            console.log(`forcing matrix: ${d.header}`);
+        } else if (subCategory === 'matrix') {
+            fields[itemName.replace(reMatrixField, '')] = MatrixCol(3, 3, description);
+        } else if (subCategory === 'vector') {
+            fields[itemName.replace(reVectorField, '')] = VectorCol(3, description);
+        } else {
+            if (itemName.match(reMatrixField)) {
+                fields[itemName.replace(reMatrixField, '')] = MatrixCol(3, 3, description);
+                console.log(`${d.header} should have 'matrix' _item_sub_category.id`);
+            } else if (itemName.match(reVectorField)) {
+                fields[itemName.replace(reVectorField, '')] = VectorCol(3, description);
+                console.log(`${d.header} should have 'vector' _item_sub_category.id`);
+            } else {
+                const code = getCode(d, imports, ctx);
+                if (code) {
+                    let fieldType = getFieldType(code[0], description, code[1], code[2]);
+                    if (fieldType.type === 'str') {
+                        if (COMMA_SEPARATED_LIST_FIELDS.includes(d.header)) {
+                            fieldType = ListCol('str', ',', description);
+                            console.log(`forcing comma separated: ${d.header}`);
+                        } else if (SPACE_SEPARATED_LIST_FIELDS.includes(d.header)) {
+                            fieldType = ListCol('str', ' ', description);
+                            console.log(`forcing space separated: ${d.header}`);
+                        } else if (SEMICOLON_SEPARATED_LIST_FIELDS.includes(d.header)) {
+                            fieldType = ListCol('str', ';', description);
+                            console.log(`forcing space separated: ${d.header}`);
+                        }
+                    }
+                    if (d.header in EXTRA_ENUM_VALUES) {
+                        if (fieldType.type === 'enum') {
+                            fieldType.values.push(...EXTRA_ENUM_VALUES[d.header]);
+                        } else {
+                            console.warn(`expected enum: ${d.header}`);
+                        }
+                    }
+                    fields[itemName] = fieldType;
+                } else {
+                    fields[itemName] = StrCol(description);
+                    // console.log(`could not determine code for '${d.header}'`)
+                }
+            }
+        }
+    });
+
+    return { tables, aliases };
+}
--- a/src/cli/cifschema/util/generate.ts
+++ b/src/cli/cifschema/util/generate.ts
@@ -0,0 +1,151 @@
+/**
+ * Copyright (c) 2017-2019 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * @author Alexander Rose <alexander.rose@weirdbyte.de>
+ */
+
+import { Database, Filter, Column } from './schema';
+import { indentString } from '../../../mol-util/string';
+import { FieldPath } from '../../../mol-io/reader/cif/schema';
+
+function header (name: string, info: string, moldataImportPath: string) {
+    return `/**
+ * Copyright (c) 2017-2020 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * Code-generated '${name}' schema file. ${info}
+ *
+ * @author molstar/ciftools package
+ */
+
+import { Database, Column } from '${moldataImportPath}/db';
+
+import Schema = Column.Schema;`;
+}
+
+function footer (name: string) {
+    return `
+export type ${name}_Schema = typeof ${name}_Schema;
+export interface ${name}_Database extends Database<${name}_Schema> {};`;
+}
+
+function getTypeShorthands(schema: Database, fields?: Filter) {
+    const types = new Set<string>();
+    Object.keys(schema.tables).forEach(table => {
+        if (fields && !fields[table]) return;
+        const { columns } = schema.tables[table];
+        Object.keys(columns).forEach(columnName => {
+            if (fields && !fields[table][columnName]) return;
+            types.add(schema.tables[table].columns[columnName].type);
+        });
+    });
+    const shorthands: string[] = [];
+    types.forEach(type => {
+        switch (type) {
+            case 'str': shorthands.push('const str = Schema.str;'); break;
+            case 'int': shorthands.push('const int = Schema.int;'); break;
+            case 'float': shorthands.push('const float = Schema.float;'); break;
+            case 'coord': shorthands.push('const coord = Schema.coord;'); break;
+            case 'enum': shorthands.push('const Aliased = Schema.Aliased;'); break;
+            case 'matrix': shorthands.push('const Matrix = Schema.Matrix;'); break;
+            case 'vector': shorthands.push('const Vector = Schema.Vector;'); break;
+            case 'list': shorthands.push('const List = Schema.List;'); break;
+        }
+    });
+    return shorthands.join('\n');
+}
+
+function getTypeDef(c: Column): string {
+    switch (c.type) {
+        case 'str': return 'str';
+        case 'int': return 'int';
+        case 'float': return 'float';
+        case 'coord': return 'coord';
+        case 'enum':
+            return `Aliased<'${c.values.map(v => v.replace(/'/g, '\\\'')).join(`' | '`)}'>(${c.subType})`;
+        case 'matrix':
+            return `Matrix(${c.rows}, ${c.columns})`;
+        case 'vector':
+            return `Vector(${c.length})`;
+        case 'list':
+            if (c.subType === 'int') {
+                return `List('${c.separator}', x => parseInt(x, 10))`;
+            } else if (c.subType === 'float' || c.subType === 'coord') {
+                return `List('${c.separator}', x => parseFloat(x))`;
+            } else {
+                return `List('${c.separator}', x => x)`;
+            }
+    }
+}
+
+const reSafePropertyName = /^[a-zA-Z_$][0-9a-zA-Z_$]*$/;
+function safePropertyString(name: string) { return name.match(reSafePropertyName) ? name : `'${name}'`; }
+
+function doc(description: string, spacesCount: number) {
+    const spaces = ' '.repeat(spacesCount);
+    return [
+        `${spaces}/**`,
+        `${indentString(description, 1, `${spaces} * `)}`.replace(/ +\n/g, '\n'),
+        `${spaces} */`
+    ].join('\n');
+}
+
+export function generate (name: string, info: string, schema: Database, fields: Filter | undefined, moldataImportPath: string, addAliases: boolean) {
+    const codeLines: string[] = [];
+
+    if (fields) {
+        Object.keys(fields).forEach(table => {
+            if (table in schema.tables) {
+                const schemaTable = schema.tables[table];
+                Object.keys(fields[table]).forEach(column => {
+                    if (!(column in schemaTable.columns)) {
+                        console.log(`filter field '${table}.${column}' not found in schema`);
+                    }
+                });
+            } else {
+                console.log(`filter category '${table}' not found in schema`);
+            }
+        });
+    }
+
+    codeLines.push(`export const ${name}_Schema = {`);
+    Object.keys(schema.tables).forEach(table => {
+        if (fields && !fields[table]) return;
+        const { description, columns } = schema.tables[table];
+        if (description) codeLines.push(doc(description, 4));
+        codeLines.push(`    ${safePropertyString(table)}: {`);
+        Object.keys(columns).forEach(columnName => {
+            if (fields && !fields[table][columnName]) return;
+            const c = columns[columnName];
+            const typeDef = getTypeDef(c);
+            if (c.description) codeLines.push(doc(c.description, 8));
+            codeLines.push(`        ${safePropertyString(columnName)}: ${typeDef},`);
+        });
+        codeLines.push('    },');
+    });
+    codeLines.push('};');
+
+    if (addAliases) {
+        codeLines.push('');
+        codeLines.push(`export const ${name}_Aliases = {`);
+        Object.keys(schema.aliases).forEach(path => {
+            const [ table, columnName ] = path.split('.');
+            if (fields && !fields[table]) return;
+            if (fields && !fields[table][columnName]) return;
+
+            const filteredAliases = new Set<string>();
+            schema.aliases[path].forEach(p => {
+                if (!FieldPath.equal(p, path)) filteredAliases.add(FieldPath.canonical(p));
+            });
+
+            if (filteredAliases.size === 0) return;
+            codeLines.push(`    ${safePropertyString(path)}: [`);
+            filteredAliases.forEach(alias => {
+                codeLines.push(`        '${alias}',`);
+            });
+            codeLines.push('    ],');
+        });
+        codeLines.push('};');
+    }
+
+    return `${header(name, info, moldataImportPath)}\n\n${getTypeShorthands(schema, fields)}\n\n${codeLines.join('\n')}\n${footer(name)}`;
+}
--- a/src/cli/cifschema/util/helper.ts
+++ b/src/cli/cifschema/util/helper.ts
@@ -0,0 +1,20 @@
+/**
+ * Copyright (c) 2019 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * @author Alexander Rose <alexander.rose@weirdbyte.de>
+ */
+
+export type Import = { save?: string, file?: string }
+
+export function parseImportGet(s: string): Import[] {
+    // [{'save':hi_ang_Fox_coeffs  'file':templ_attr.cif}   {'save':hi_ang_Fox_c0  'file':templ_enum.cif}]
+    // [{"file":'templ_enum.cif' "save":'H_M_ref'}]
+    return s.trim().substring(2, s.length - 2).split(/}[ \n\t]*{/g).map(s => {
+        const save = s.match(/('save'|"save"):([^ \t\n]+)/);
+        const file = s.match(/('file'|"file"):([^ \t\n]+)/);
+        return {
+            save: save ? save[0].substr(7).replace(/['"]/g, '') : undefined,
+            file: file ? file[0].substr(7).replace(/['"]/g, '') : undefined
+        };
+    });
+}
--- a/src/cli/cifschema/util/schema.ts
+++ b/src/cli/cifschema/util/schema.ts
@@ -0,0 +1,77 @@
+/**
+ * Copyright (c) 2017-2019 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * @author Alexander Rose <alexander.rose@weirdbyte.de>
+ */
+
+export interface Database {
+    tables: { [ tableName: string ]: Table }
+    aliases: { [ path: string ]: string[] }
+}
+export interface Table {
+    description: string
+    key: Set<string>
+    columns: { [ columnName: string ]: Column }
+}
+export type Column = IntCol | StrCol | FloatCol | CoordCol | EnumCol | VectorCol | MatrixCol | ListCol
+
+type BaseCol = { description: string }
+
+export type IntCol = { type: 'int' } & BaseCol
+export function IntCol(description: string): IntCol { return { type: 'int', description }; }
+
+export type StrCol = { type: 'str' } & BaseCol
+export function StrCol(description: string): StrCol { return { type: 'str', description }; }
+
+export type FloatCol = { type: 'float' } & BaseCol
+export function FloatCol(description: string): FloatCol { return { type: 'float', description }; }
+
+export type CoordCol = { type: 'coord' } & BaseCol
+export function CoordCol(description: string): CoordCol { return { type: 'coord', description }; }
+
+export type EnumCol = { type: 'enum', subType: 'int' | 'str', values: string[] } & BaseCol
+export function EnumCol(values: string[], subType: 'int' | 'str', description: string): EnumCol {
+    return { type: 'enum', description, values, subType };
+}
+
+export type VectorCol = { type: 'vector', length: number } & BaseCol
+export function VectorCol(length: number, description: string): VectorCol {
+    return { type: 'vector', description, length };
+}
+
+export type MatrixCol = { type: 'matrix', rows: number, columns: number } & BaseCol
+export function MatrixCol(columns: number, rows: number, description: string): MatrixCol {
+    return { type: 'matrix', description, columns, rows };
+}
+
+export type ListCol = { type: 'list', subType: 'int' | 'str' | 'float' | 'coord', separator: string } & BaseCol
+export function ListCol(subType: 'int' | 'str' | 'float' | 'coord', separator: string, description: string): ListCol {
+    return { type: 'list', description, separator, subType };
+}
+
+export type Filter = { [ table: string ]: { [ column: string ]: true } }
+
+export function mergeFilters (...filters: Filter[]) {
+    const n = filters.length;
+    const mergedFilter: Filter = {};
+    const fields: Map<string, number> = new Map();
+    filters.forEach(filter => {
+        Object.keys(filter).forEach(category => {
+            Object.keys(filter[ category ]).forEach(field => {
+                const key = `${category}.${field}`;
+                const value = fields.get(key) || 0;
+                fields.set(key, value + 1);
+            });
+        });
+    });
+    fields.forEach((v, k) => {
+        if (v !== n) return;
+        const [categoryName, fieldName] = k.split('.');
+        if (categoryName in mergedFilter) {
+            mergedFilter[categoryName][fieldName] = true;
+        } else {
+            mergedFilter[categoryName] = { fieldName: true };
+        }
+    });
+    return mergedFilter;
+}
--- a/src/cli/lipid-params/index.ts
+++ b/src/cli/lipid-params/index.ts
@@ -0,0 +1,93 @@
+#!/usr/bin/env node
+/**
+ * Copyright (c) 2020 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * @author Alexander Rose <alexander.rose@weirdbyte.de>
+ */
+
+import * as argparse from 'argparse';
+import * as fs from 'fs';
+import * as path from 'path';
+import fetch from 'node-fetch';
+import { UniqueArray } from '../../mol-data/generic';
+
+const LIPIDS_DIR = path.resolve(__dirname, '../../../../build/lipids/');
+
+const MARTINI_LIPIDS_PATH = path.resolve(LIPIDS_DIR, 'martini_lipids.itp');
+const MARTINI_LIPIDS_URL = 'http://www.cgmartini.nl/images/parameters/lipids/Collections/martini_v2.0_lipids_all_201506.itp';
+
+async function ensureAvailable(path: string, url: string) {
+    if (FORCE_DOWNLOAD || !fs.existsSync(path)) {
+        const name = url.substr(url.lastIndexOf('/') + 1);
+        console.log(`downloading ${name}...`);
+        const data = await fetch(url);
+        if (!fs.existsSync(LIPIDS_DIR)) {
+            fs.mkdirSync(LIPIDS_DIR);
+        }
+        fs.writeFileSync(path, await data.text());
+        console.log(`done downloading ${name}`);
+    }
+}
+
+async function ensureLipidsAvailable() { await ensureAvailable(MARTINI_LIPIDS_PATH, MARTINI_LIPIDS_URL); }
+
+const extraLipids = ['DMPC'];
+
+async function run(out: string) {
+    await ensureLipidsAvailable();
+    const lipidsItpStr = fs.readFileSync(MARTINI_LIPIDS_PATH, 'utf8');
+
+    const lipids = UniqueArray.create<string>();
+    const reLipid = /\[moleculetype\]\n; molname      nrexcl\n +([a-zA-Z]{3,5})/g;
+    let m: RegExpExecArray | null;
+
+    while ((m = reLipid.exec(lipidsItpStr)) !== null) {
+        const v = m[0].substr(m[0].lastIndexOf(' ') + 1);
+        UniqueArray.add(lipids, v, v);
+    }
+
+    for (const v of extraLipids) {
+        UniqueArray.add(lipids, v, v);
+    }
+
+    const lipidNames = JSON.stringify(lipids.array);
+
+    if (out) {
+        const output = `/**
+ * Copyright (c) 2020 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * Code-generated lipid params file. Names extracted from Martini FF lipids itp.
+ *
+ * @author molstar/lipid-params cli
+ */
+
+export const LipidNames = new Set(${lipidNames.replace(/"/g, "'").replace(/,/g, ', ')});
+`;
+        fs.writeFileSync(out, output);
+    } else {
+        console.log(lipidNames);
+    }
+}
+
+const parser = new argparse.ArgumentParser({
+    addHelp: true,
+    description: 'Create lipid params (from martini lipids itp)'
+});
+parser.addArgument([ '--out', '-o' ], {
+    help: 'Generated lipid params output path, if not given printed to stdout'
+});
+parser.addArgument([ '--forceDownload', '-f' ], {
+    action: 'storeTrue',
+    help: 'Force download of martini lipids itp'
+});
+interface Args {
+    out: string
+    forceDownload: boolean
+}
+const args: Args = parser.parseArgs();
+
+const FORCE_DOWNLOAD = args.forceDownload;
+
+run(args.out || '').catch(e => {
+    console.error(e);
+});
--- a/src/apps/state-docs/index.ts
+++ b/src/apps/state-docs/index.ts
@@ -1,10 +1,11 @@
+#!/usr/bin/env node
 /**
 * Copyright (c) 2018 mol* contributors, licensed under MIT, See LICENSE file for more info.
 *
 * @author David Sehnal <david.sehnal@gmail.com>
 */

-import * as _ from '../../mol-plugin-state/transforms'
+import * as _ from '../../mol-plugin-state/transforms';
 import { StateTransformer, StateObject } from '../../mol-state';
 import { StringBuilder } from '../../mol-util';
 import * as fs from 'fs';
@@ -13,7 +14,7 @@ import { PluginContext } from '../../mol-plugin/context';
 import { ParamDefinition } from '../../mol-util/param-definition';

 // force the transform to be evaluated
-_.StateTransforms.Data.Download.id
+_.StateTransforms.Data.Download.id;

 // Empty plugin context
 const ctx = new PluginContext({
@@ -32,7 +33,7 @@ function writeTransformer(t: StateTransformer) {
    StringBuilder.write(builder, `## <a name="${t.id.replace('.', '-')}"></a>${t.id} :: ${typeToString(t.definition.from)} -> ${typeToString(t.definition.to)}`);
    StringBuilder.newline(builder);
    if (t.definition.display.description) {
-        StringBuilder.write(builder, `*${t.definition.display.description}*`)
+        StringBuilder.write(builder, `*${t.definition.display.description}*`);
        StringBuilder.newline(builder);
    }
    StringBuilder.newline(builder);
@@ -48,7 +49,7 @@ function writeTransformer(t: StateTransformer) {
        StringBuilder.write(builder, `\`\`\`js\n${JSON.stringify(ParamDefinition.getDefaultValues(params), null, 2)}\n\`\`\``);
        StringBuilder.newline(builder);
    }
-    StringBuilder.write(builder, '----------------------------')
+    StringBuilder.write(builder, '----------------------------');
    StringBuilder.newline(builder);
 }

@@ -62,7 +63,7 @@ transformers.forEach(t => {
    StringBuilder.newline(builder);
 });
 StringBuilder.newline(builder);
-StringBuilder.write(builder, '----------------------------')
+StringBuilder.write(builder, '----------------------------');
 StringBuilder.newline(builder);
 transformers.forEach(t => writeTransformer(t));

--- a/src/apps/state-docs/pd-to-md.ts
+++ b/src/apps/state-docs/pd-to-md.ts
@@ -22,9 +22,12 @@ function paramInfo(param: PD.Any, offset: number): string {
        case 'color-list': return `A list of colors as 0xrrggbb`;
        case 'vec3': return `3D vector [x, y, z]`;
        case 'mat4': return `4x4 transformation matrix`;
+        case 'url': return `URL couple with unique identifier`;
        case 'file': return `JavaScript File Handle`;
        case 'file-list': return `JavaScript FileList Handle`;
        case 'select': return `One of ${oToS(param.options)}`;
+        case 'value-ref': return `Reference to a runtime defined value.`;
+        case 'data-ref': return `Reference to a computed data value.`;
        case 'text': return 'String';
        case 'interval': return `Interval [min, max]`;
        case 'group': return `Object with:\n${getParams(param.params, offset + 2)}`;
--- a/src/apps/structure-info/helpers.ts
+++ b/src/apps/structure-info/helpers.ts
@@ -4,19 +4,19 @@
 * @author David Sehnal <david.sehnal@gmail.com>
 */

-import * as util from 'util'
-import * as fs from 'fs'
-import fetch from 'node-fetch'
+import * as util from 'util';
+import * as fs from 'fs';
+import fetch from 'node-fetch';
 require('util.promisify').shim();

-import { CIF } from '../../mol-io/reader/cif'
-import { Progress } from '../../mol-task'
+import { CIF } from '../../mol-io/reader/cif';
+import { Progress } from '../../mol-task';

 const readFileAsync = util.promisify(fs.readFile);

 async function readFile(path: string) {
    if (path.match(/\.bcif$/)) {
-        const input = await readFileAsync(path)
+        const input = await readFileAsync(path);
        const data = new Uint8Array(input.byteLength);
        for (let i = 0; i < input.byteLength; i++) data[i] = input[i];
        return data;
--- a/src/apps/structure-info/model.ts
+++ b/src/apps/structure-info/model.ts
@@ -1,3 +1,4 @@
+#!/usr/bin/env node
 /**
 * Copyright (c) 2018 mol* contributors, licensed under MIT, See LICENSE file for more info.
 *
@@ -5,11 +6,11 @@
 * @author David Sehnal <david.sehnal@gmail.com>
 */

-import * as argparse from 'argparse'
+import * as argparse from 'argparse';
 require('util.promisify').shim();

-import { CifFrame } from '../../mol-io/reader/cif'
-import { Model, Structure, StructureElement, Unit, StructureProperties, UnitRing } from '../../mol-model/structure'
+import { CifFrame } from '../../mol-io/reader/cif';
+import { Model, Structure, StructureElement, Unit, StructureProperties, UnitRing, Trajectory } from '../../mol-model/structure';
 // import { Run, Progress } from '../../mol-task'
 import { OrderedSet } from '../../mol-data/int';
 import { openCif, downloadCif } from './helpers';
@@ -18,6 +19,7 @@ import { trajectoryFromMmCIF } from '../../mol-model-formats/structure/mmcif';
 import { Sequence } from '../../mol-model/sequence';
 import { ModelSecondaryStructure } from '../../mol-model-formats/structure/property/secondary-structure';
 import { ModelSymmetry } from '../../mol-model-formats/structure/property/symmetry';
+import { Task } from '../../mol-task';


 async function downloadFromPdb(pdb: string) {
@@ -32,30 +34,32 @@ export async function readCifFile(path: string) {
 }

 export function atomLabel(model: Model, aI: number) {
-    const { atoms, residues, chains, residueAtomSegments, chainAtomSegments } = model.atomicHierarchy
-    const { label_atom_id } = atoms
-    const { label_comp_id, label_seq_id } = residues
-    const { label_asym_id } = chains
-    const rI = residueAtomSegments.index[aI]
-    const cI = chainAtomSegments.index[aI]
-    return `${label_asym_id.value(cI)} ${label_comp_id.value(rI)} ${label_seq_id.value(rI)} ${label_atom_id.value(aI)}`
+    const { atoms, residues, chains, residueAtomSegments, chainAtomSegments } = model.atomicHierarchy;
+    const { label_atom_id, label_comp_id } = atoms;
+    const { label_seq_id } = residues;
+    const { label_asym_id } = chains;
+    const rI = residueAtomSegments.index[aI];
+    const cI = chainAtomSegments.index[aI];
+    return `${label_asym_id.value(cI)} ${label_comp_id.value(aI)} ${label_seq_id.value(rI)} ${label_atom_id.value(aI)}`;
 }

 export function residueLabel(model: Model, rI: number) {
-    const { residues, chains, residueAtomSegments, chainAtomSegments } = model.atomicHierarchy
-    const { label_comp_id, label_seq_id } = residues
-    const { label_asym_id } = chains
-    const cI = chainAtomSegments.index[residueAtomSegments.offsets[rI]]
-    return `${label_asym_id.value(cI)} ${label_comp_id.value(rI)} ${label_seq_id.value(rI)}`
+    const { atoms, residues, chains, residueAtomSegments, chainAtomSegments } = model.atomicHierarchy;
+    const { label_comp_id } = atoms;
+    const { label_seq_id } = residues;
+    const { label_asym_id } = chains;
+    const aI = residueAtomSegments.offsets[rI];
+    const cI = chainAtomSegments.index[aI];
+    return `${label_asym_id.value(cI)} ${label_comp_id.value(aI)} ${label_seq_id.value(rI)}`;
 }

 export function printSecStructure(model: Model) {
    console.log('\nSecondary Structure\n=============');
    const { residues } = model.atomicHierarchy;
    const secondaryStructure = ModelSecondaryStructure.Provider.get(model);
-    if (!secondaryStructure) return
+    if (!secondaryStructure) return;

-    const { key, elements } = secondaryStructure
+    const { key, elements } = secondaryStructure;
    const count = residues._rowCount;
    let rI = 0;
    while (rI < count) {
@@ -95,15 +99,17 @@ export function printBonds(structure: Structure, showIntra: boolean, showInter:
        for (const unit of structure.units) {
            if (!Unit.isAtomic(unit)) continue;

-            for (const pairBonds of bonds.getConnectedUnits(unit)) {
+            for (const pairBonds of bonds.getConnectedUnits(unit.id)) {
                if (!pairBonds.areUnitsOrdered || pairBonds.edgeCount === 0) continue;

-                const { unitA, unitB } = pairBonds;
-                console.log(`${pairBonds.unitA.id} - ${pairBonds.unitB.id}: ${pairBonds.edgeCount} bond(s)`);
+                const { unitA, unitB, edgeCount } = pairBonds;
+                const uA = structure.unitMap.get(unitA);
+                const uB = structure.unitMap.get(unitB);
+                console.log(`${unitA} - ${unitB}: ${edgeCount} bond(s)`);

                for (const aI of pairBonds.connectedIndices) {
                    for (const bond of pairBonds.getEdges(aI)) {
-                        console.log(`${atomLabel(unitA.model, unitA.elements[aI])} -- ${atomLabel(unitB.model, unitB.elements[bond.indexB])}`);
+                        console.log(`${atomLabel(uA.model, uA.elements[aI])} -- ${atomLabel(uB.model, uB.elements[bond.indexB])}`);
                    }
                }
            }
@@ -116,8 +122,8 @@ export function printSequence(model: Model) {
    const { byEntityKey } = model.sequence;
    for (const key of Object.keys(byEntityKey)) {
        const { sequence, entityId } = byEntityKey[+key];
-        const { seqId, compId } = sequence
-        console.log(`${entityId} (${sequence.kind} ${seqId.value(0)} (offset ${sequence.offset}), ${seqId.value(seqId.rowCount - 1)}) (${compId.value(0)}, ${compId.value(compId.rowCount - 1)})`);
+        const { seqId, compId } = sequence;
+        console.log(`${entityId} (${sequence.kind} ${seqId.value(0)}, ${seqId.value(seqId.rowCount - 1)}) (${compId.value(0)}, ${compId.value(compId.rowCount - 1)})`);
        console.log(`${Sequence.getSequenceString(sequence)}`);
    }
    console.log();
@@ -132,7 +138,7 @@ export function printRings(structure: Structure) {
        for (let i = 0, _i = Math.min(5, all.length); i < _i; i++) {
            fps[fps.length] = UnitRing.fingerprint(unit, all[i]);
        }
-        if (all.length > 5) fps.push('...')
+        if (all.length > 5) fps.push('...');
        console.log(`Unit ${unit.id}, ${all.length} ring(s), ${byFingerprint.size} different fingerprint(s).\n  ${fps.join(', ')}`);
    }
    console.log();
@@ -171,8 +177,8 @@ export function printUnits(structure: Structure) {

 export function printSymmetryInfo(model: Model) {
    console.log('\nSymmetry Info\n=============');
-    const symmetry = ModelSymmetry.Provider.get(model)
-    if (!symmetry) return
+    const symmetry = ModelSymmetry.Provider.get(model);
+    if (!symmetry) return;
    const { size, anglesInRadians } = symmetry.spacegroup.cell;
    console.log(`Spacegroup: ${symmetry.spacegroup.name} size: ${Vec3.toString(size)} angles: ${Vec3.toString(anglesInRadians)}`);
    console.log(`Assembly names: ${symmetry.assemblies.map(a => a.id).join(', ')}`);
@@ -180,10 +186,11 @@ export function printSymmetryInfo(model: Model) {
    console.log(`NCS operators: ${symmetry.ncsOperators && symmetry.ncsOperators.map(a => a.name).join(', ')}`);
 }

-export function printModelStats(models: ReadonlyArray<Model>) {
+export async function printModelStats(models: Trajectory) {
    console.log('\nModels\n=============');

-    for (const m of models) {
+    for (let i = 0; i < models.frameCount; i++) {
+        const m = await Task.resolveInContext(models.getFrameAtIndex(i));
        if (m.coarseHierarchy.isDefined) {
            console.log(`${m.label} ${m.modelNum}: ${m.atomicHierarchy.atoms._rowCount} atom(s), ${m.coarseHierarchy.spheres.count} sphere(s), ${m.coarseHierarchy.gaussians.count} gaussian(s)`);
        } else {
@@ -195,7 +202,7 @@ export function printModelStats(models: ReadonlyArray<Model>) {

 export async function getModelsAndStructure(frame: CifFrame) {
    const models = await trajectoryFromMmCIF(frame).run();
-    const structure = Structure.ofModel(models[0]);
+    const structure = Structure.ofModel(models.representative);
    return { models, structure };
 }

@@ -203,17 +210,17 @@ async function run(frame: CifFrame, args: Args) {
    const { models, structure } = await getModelsAndStructure(frame);

    if (args.models) printModelStats(models);
-    if (args.seq) printSequence(models[0]);
+    if (args.seq) printSequence(models.representative);
    if (args.units) printUnits(structure);
-    if (args.sym) printSymmetryInfo(models[0]);
+    if (args.sym) printSymmetryInfo(models.representative);
    if (args.rings) printRings(structure);
    if (args.intraBonds) printBonds(structure, true, false);
    if (args.interBonds) printBonds(structure, false, true);
-    if (args.sec) printSecStructure(models[0]);
+    if (args.sec) printSecStructure(models.representative);
 }

 async function runDL(pdb: string, args: Args) {
-    const mmcif = await downloadFromPdb(pdb)
+    const mmcif = await downloadFromPdb(pdb);
    run(mmcif, args);
 }

@@ -255,5 +262,5 @@ interface Args {
 }
 const args: Args = parser.parseArgs();

-if (args.download) runDL(args.download, args)
-else if (args.file) runFile(args.file, args)
+if (args.download) runDL(args.download, args);
+else if (args.file) runFile(args.file, args);
--- a/src/apps/structure-info/volume.ts
+++ b/src/apps/structure-info/volume.ts
@@ -1,46 +1,44 @@
+#!/usr/bin/env node
 /**
 * Copyright (c) 2018 mol* contributors, licensed under MIT, See LICENSE file for more info.
 *
 * @author David Sehnal <david.sehnal@gmail.com>
 */

-import * as fs from 'fs'
-import * as argparse from 'argparse'
-import * as util from 'util'
+import * as fs from 'fs';
+import * as argparse from 'argparse';
+import * as util from 'util';

-import { VolumeData, VolumeIsoValue } from '../../mol-model/volume'
-import { downloadCif } from './helpers'
-import { CIF } from '../../mol-io/reader/cif'
-import { DensityServer_Data_Database } from '../../mol-io/reader/cif/schema/density-server';
+import { Volume } from '../../mol-model/volume';
+import { downloadCif } from './helpers';
+import { CIF } from '../../mol-io/reader/cif';
 import { Table } from '../../mol-data/db';
 import { StringBuilder } from '../../mol-util';
 import { Task } from '../../mol-task';
 import { createVolumeIsosurfaceMesh } from '../../mol-repr/volume/isosurface';
 import { Theme } from '../../mol-theme/theme';
-import { volumeFromDensityServerData } from '../../mol-model-formats/volume/density-server';
+import { volumeFromDensityServerData, DscifFormat } from '../../mol-model-formats/volume/density-server';

 require('util.promisify').shim();
 const writeFileAsync = util.promisify(fs.writeFile);

-type Volume = { source: DensityServer_Data_Database, volume: VolumeData }
-
 async function getVolume(url: string): Promise<Volume> {
    const cif = await downloadCif(url, true);
    const data = CIF.schema.densityServer(cif.blocks[1]);
-    return { source: data, volume: await volumeFromDensityServerData(data).run() };
+    return await volumeFromDensityServerData(data).run();
 }

-function print(data: Volume) {
-    const { volume_data_3d_info } = data.source;
+function print(volume: Volume) {
+    if (!DscifFormat.is(volume.sourceData)) return;
+    const { volume_data_3d_info } = volume.sourceData.data;
    const row = Table.getRow(volume_data_3d_info, 0);
    console.log(row);
-    console.log(data.volume.cell);
-    console.log(data.volume.dataStats);
-    console.log(data.volume.fractionalBox);
+    console.log(volume.grid.transform);
+    console.log(volume.grid.stats);
 }

-async function doMesh(data: Volume, filename: string) {
-    const mesh = await Task.create('', runtime => createVolumeIsosurfaceMesh({ runtime }, data.volume, Theme.createEmpty(), { isoValue: VolumeIsoValue.absolute(1.5) } )).run();
+async function doMesh(volume: Volume, filename: string) {
+    const mesh = await Task.create('', runtime => createVolumeIsosurfaceMesh({ runtime }, volume, Theme.createEmpty(), { isoValue: Volume.IsoValue.absolute(1.5) } )).run();
    console.log({ vc: mesh.vertexCount, tc: mesh.triangleCount });

    // Export the mesh in OBJ format.
--- a/src/examples/alpha-orbitals/controls.tsx
+++ b/src/examples/alpha-orbitals/controls.tsx
@@ -0,0 +1,25 @@
+/**
+ * Copyright (c) 2020 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * @author David Sehnal <david.sehnal@gmail.com>
+ */
+
+import * as React from 'react';
+import * as ReactDOM from 'react-dom';
+import { AlphaOrbitalsExample } from '.';
+import { ParameterControls } from '../../mol-plugin-ui/controls/parameters';
+import { useBehavior } from '../../mol-plugin-ui/hooks/use-behavior';
+import { PluginContextContainer } from '../../mol-plugin-ui/plugin';
+
+export function mountControls(orbitals: AlphaOrbitalsExample, parent: Element) {
+    ReactDOM.render(<PluginContextContainer plugin={orbitals.plugin}>
+        <Controls orbitals={orbitals} />
+    </PluginContextContainer>, parent);
+}
+
+function Controls({ orbitals }: { orbitals: AlphaOrbitalsExample }) {
+    const params = useBehavior(orbitals.params);
+    const values = useBehavior(orbitals.state);
+
+    return <ParameterControls params={params as any} values={values} onChangeValues={(vs: any) => orbitals.state.next(vs)} />;
+}
--- a/src/examples/alpha-orbitals/example-data.ts
+++ b/src/examples/alpha-orbitals/example-data.ts
--- a/src/examples/alpha-orbitals/index.html
+++ b/src/examples/alpha-orbitals/index.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<html lang="en">
+    <head>
+        <meta charset="utf-8" />
+        <meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
+        <title>Mol* Alpha Orbitals Example</title>
+        <style>
+            * {
+                margin: 0;
+                padding: 0;
+                box-sizing: border-box;
+            }
+            #app {
+                position: absolute;
+                left: 0;
+                top: 0;
+                bottom: 0;
+                right: 0;
+            }
+            #controls {
+                position: absolute;
+                left: 8px;
+                top: 8px;
+                width: 300px;
+            }            
+        </style>
+        <link rel="stylesheet" type="text/css" href="molstar.css" />
+        <script type="text/javascript" src="./index.js"></script>
+    </head>
+    <body>
+        <div id="app"></div>
+        <div id='controls'></div>
+        <script>
+            AlphaOrbitalsExample.init('app')
+        </script>
+    </body>
+</html>
--- a/src/examples/alpha-orbitals/index.ts
+++ b/src/examples/alpha-orbitals/index.ts
@@ -0,0 +1,213 @@
+/**
+ * Copyright (c) 2020 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * @author David Sehnal <david.sehnal@gmail.com>
+ */
+
+import { SphericalBasisOrder } from '../../extensions/alpha-orbitals/spherical-functions';
+import { BasisAndOrbitals, CreateOrbitalDensityVolume, CreateOrbitalRepresentation3D, CreateOrbitalVolume, StaticBasisAndOrbitals } from '../../extensions/alpha-orbitals/transforms';
+import { createPluginAsync } from '../../mol-plugin';
+import { DefaultPluginSpec } from '../../mol-plugin/spec';
+import { PluginStateObject } from '../../mol-plugin-state/objects';
+import { PluginConfig } from '../../mol-plugin/config';
+import { PluginContext } from '../../mol-plugin/context';
+import { StateObjectSelector, StateTransformer } from '../../mol-state';
+import { Color } from '../../mol-util/color';
+import { ColorNames } from '../../mol-util/color/names';
+import { ParamDefinition } from '../../mol-util/param-definition';
+import { mountControls } from './controls';
+import { DemoMoleculeSDF, DemoOrbitals } from './example-data';
+import { BehaviorSubject } from 'rxjs';
+import { debounceTime, skip } from 'rxjs/operators';
+import './index.html';
+import { Basis, AlphaOrbital } from '../../extensions/alpha-orbitals/data-model';
+import { PluginCommands } from '../../mol-plugin/commands';
+import { canComputeGrid3dOnGPU } from '../../mol-gl/compute/grid3d';
+require('mol-plugin-ui/skin/light.scss');
+
+interface DemoInput {
+    moleculeSdf: string,
+    basis: Basis,
+    order: SphericalBasisOrder,
+    orbitals: AlphaOrbital[]
+}
+
+interface Params {
+    show: { name: 'orbital', params: { index: number } } | { name: 'density', params: {} },
+    isoValue: number,
+    gpuSurface: boolean
+}
+
+type Selectors = {
+    type: 'orbital',
+    volume: StateObjectSelector<PluginStateObject.Volume.Data, typeof CreateOrbitalVolume>,
+    positive: StateObjectSelector<PluginStateObject.Volume.Representation3D, typeof CreateOrbitalRepresentation3D>
+    negative: StateObjectSelector<PluginStateObject.Volume.Representation3D, typeof CreateOrbitalRepresentation3D>
+} | {
+    type: 'density',
+    volume: StateObjectSelector<PluginStateObject.Volume.Data, typeof CreateOrbitalDensityVolume>,
+    positive: StateObjectSelector<PluginStateObject.Volume.Representation3D, typeof CreateOrbitalRepresentation3D>
+}
+
+export class AlphaOrbitalsExample {
+    plugin: PluginContext;
+
+    async init(target: string | HTMLElement) {
+        this.plugin = await createPluginAsync(typeof target === 'string' ? document.getElementById(target)! : target, {
+            ...DefaultPluginSpec(),
+            layout: {
+                initial: {
+                    isExpanded: false,
+                    showControls: false
+                },
+                controls: { left: 'none', right: 'none', top: 'none', bottom: 'none' },
+            },
+            config: [
+                [PluginConfig.Viewport.ShowExpand, false],
+                [PluginConfig.Viewport.ShowControls, false],
+                [PluginConfig.Viewport.ShowSelectionMode, false],
+                [PluginConfig.Viewport.ShowAnimation, false],
+            ]
+        });
+
+        this.plugin.managers.interactivity.setProps({ granularity: 'element' });
+
+        if (!canComputeGrid3dOnGPU(this.plugin.canvas3d?.webgl)) {
+            PluginCommands.Toast.Show(this.plugin, {
+                title: 'Error',
+                message: `Browser/device does not support required WebGL extension (OES_texture_float).`
+            });
+            return;
+        }
+
+        this.load({
+            moleculeSdf: DemoMoleculeSDF,
+            ...DemoOrbitals
+        });
+
+        mountControls(this, document.getElementById('controls')!);
+    }
+
+    readonly params = new BehaviorSubject<ParamDefinition.For<Params>>({} as any);
+    readonly state = new BehaviorSubject<Params>({ show: { name: 'orbital', params: { index: 32 } }, isoValue: 1, gpuSurface: false });
+
+    private selectors?: Selectors = void 0;
+    private basis?: StateObjectSelector<BasisAndOrbitals> = void 0;
+
+    private currentParams: Params = { ...this.state.value };
+
+    private clearVolume() {
+        if (!this.selectors) return;
+        const v = this.selectors.volume;
+        this.selectors = void 0;
+        return this.plugin.build().delete(v).commit();
+    }
+
+    private async syncVolume() {
+        if (!this.basis?.isOk) return;
+
+        const state = this.state.value;
+
+        if (state.show.name !== this.selectors?.type) {
+            await this.clearVolume();
+        }
+
+        const update = this.plugin.build();
+        if (state.show.name === 'orbital') {
+            if (!this.selectors) {
+                const volume = update
+                    .to(this.basis)
+                    .apply(CreateOrbitalVolume, { index: state.show.params.index });
+
+                const positive = volume.apply(CreateOrbitalRepresentation3D, this.volumeParams('positive', ColorNames.blue)).selector;
+                const negative = volume.apply(CreateOrbitalRepresentation3D, this.volumeParams('negative', ColorNames.red)).selector;
+
+                this.selectors = { type: 'orbital', volume: volume.selector, positive, negative };
+            } else {
+                const index = state.show.params.index;
+                update.to(this.selectors.volume).update(CreateOrbitalVolume, () => ({ index }));
+            }
+        } else {
+            if (!this.selectors) {
+                const volume = update
+                    .to(this.basis)
+                    .apply(CreateOrbitalDensityVolume);
+                const positive = volume.apply(CreateOrbitalRepresentation3D, this.volumeParams('positive', ColorNames.blue)).selector;
+                this.selectors = { type: 'density', volume: volume.selector, positive };
+            }
+        }
+
+        await update.commit();
+
+        if (this.currentParams.gpuSurface !== this.state.value.gpuSurface) {
+            await this.setIsovalue();
+        }
+
+        this.currentParams = this.state.value;
+    }
+
+    private setIsovalue() {
+        if (!this.selectors) return;
+
+        this.currentParams = this.state.value;
+        const update = this.plugin.build();
+        update.to(this.selectors.positive).update(this.volumeParams('positive', ColorNames.blue));
+        if (this.selectors?.type === 'orbital') {
+            update.to(this.selectors.negative).update(this.volumeParams('negative', ColorNames.red));
+        }
+        return update.commit();
+    }
+
+    private volumeParams(kind: 'positive' | 'negative', color: Color): StateTransformer.Params<typeof CreateOrbitalRepresentation3D> {
+        return {
+            alpha: 0.85,
+            color,
+            directVolume: this.state.value.gpuSurface,
+            kind,
+            relativeIsovalue: this.state.value.isoValue,
+            pickable: false,
+            xrayShaded: true
+        };
+    }
+
+    async load(input: DemoInput) {
+        await this.plugin.clear();
+
+        const data = await this.plugin.builders.data.rawData({ data: input.moleculeSdf }, { state: { isGhost: true } });
+        const trajectory = await this.plugin.builders.structure.parseTrajectory(data, 'mol');
+        const model = await this.plugin.builders.structure.createModel(trajectory);
+        const structure = await this.plugin.builders.structure.createStructure(model);
+
+        const all = await this.plugin.builders.structure.tryCreateComponentStatic(structure, 'all');
+        if (all) await this.plugin.builders.structure.representation.addRepresentation(all, { type: 'ball-and-stick', color: 'element-symbol', colorParams: { carbonColor: { name: 'element-symbol', params: {} } } });
+
+
+        this.basis = await this.plugin.build().toRoot()
+            .apply(StaticBasisAndOrbitals, { basis: input.basis, order: input.order, orbitals: input.orbitals })
+            .commit();
+
+        await this.syncVolume();
+
+        this.params.next({
+            show: ParamDefinition.MappedStatic('orbital', {
+                'orbital': ParamDefinition.Group({
+                    index: ParamDefinition.Numeric(32, { min: 0, max: input.orbitals.length - 1 }, { immediateUpdate: true, isEssential: true }),
+                }),
+                'density': ParamDefinition.EmptyGroup()
+            }, { cycle: true }),
+            isoValue: ParamDefinition.Numeric(this.currentParams.isoValue, { min: 0.5, max: 3, step: 0.1 }, { immediateUpdate: true, isEssential: false }),
+            gpuSurface: ParamDefinition.Boolean(this.currentParams.gpuSurface, { isHidden: true })
+        });
+
+        this.state.pipe(skip(1), debounceTime(1000 / 24)).subscribe(async params => {
+            if (params.show.name !== this.currentParams.show.name
+                || (params.show.name === 'orbital' && this.currentParams.show.name === 'orbital' && params.show.params.index !== this.currentParams.show.params.index)) {
+                this.syncVolume();
+            } else if (params.isoValue !== this.currentParams.isoValue || params.gpuSurface !== this.currentParams.gpuSurface) {
+                this.setIsovalue();
+            }
+        });
+    }
+}
+
+(window as any).AlphaOrbitalsExample = new AlphaOrbitalsExample();
--- a/src/examples/basic-wrapper/coloring.ts
+++ b/src/examples/basic-wrapper/coloring.ts
@@ -18,13 +18,13 @@ export const StripedResidues = CustomElementProperty.create<number>({
        for (let i = 0, _i = model.atomicHierarchy.atoms._rowCount; i < _i; i++) {
            map.set(i as ElementIndex, residueIndex[i] % 2);
        }
-        return map;
+        return { value: map };
    },
    coloring: {
-        getColor(e) { return e === 0 ? Color(0xff0000) : Color(0x0000ff) },
+        getColor(e) { return e === 0 ? Color(0xff0000) : Color(0x0000ff); },
        defaultColor: Color(0x777777)
    },
    getLabel(e) {
-        return e === 0 ? 'Odd stripe' : 'Even stripe'
+        return e === 0 ? 'Odd stripe' : 'Even stripe';
    }
-})
+});
--- a/src/examples/basic-wrapper/controls.tsx
+++ b/src/examples/basic-wrapper/controls.tsx
@@ -0,0 +1,16 @@
+/**
+ * Copyright (c) 2019 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * @author David Sehnal <david.sehnal@gmail.com>
+ */
+
+import { PluginUIComponent } from '../../mol-plugin-ui/base';
+import * as React from 'react';
+
+export class CustomToastMessage extends PluginUIComponent {
+    render() {
+        return <>
+            Custom <i>Toast</i> content. No timeout.
+        </>;
+    }
+}
--- a/src/examples/basic-wrapper/index.html
+++ b/src/examples/basic-wrapper/index.html
@@ -41,7 +41,7 @@
                display: block;
            }
        </style>
-        <link rel="stylesheet" type="text/css" href="app.css" />
+        <link rel="stylesheet" type="text/css" href="molstar.css" />
        <script type="text/javascript" src="./index.js"></script>
    </head>
    <body>
@@ -50,18 +50,18 @@
            <input type='text' id='url' placeholder='url' />
            <input type='text' id='assemblyId' placeholder='assembly id' />
            <select id='format'>
-                <option value='cif' selected>CIF</option>
+                <option value='mmcif' selected>mmCIF</option>
                <option value='pdb'>PDB</option>
            </select>
        </div>
        <div id="app"></div>
-        <script>      
+        <script>
            function $(id) { return document.getElementById(id); }
-        
+
            var pdbId = '1grm', assemblyId= '1';
            var url = 'https://www.ebi.ac.uk/pdbe/static/entry/' + pdbId + '_updated.cif';
-            var format = 'cif';
-            
+            var format = 'mmcif';
+
            $('url').value = url;
            $('url').onchange = function (e) { url = e.target.value; }
            $('assemblyId').value = assemblyId;
@@ -69,15 +69,8 @@
            $('format').value = format;
            $('format').onchange = function (e) { format = e.target.value; }

-            // var url = 'https://www.ebi.ac.uk/pdbe/entry-files/pdb' + pdbId + '.ent';
-            // var format = 'pdb';
-            // var assemblyId = 'deposited';
-
            BasicMolStarWrapper.init('app' /** or document.getElementById('app') */);
            BasicMolStarWrapper.setBackground(0xffffff);
-            // BasicMolStarWrapper.load({ url: url, format: format, assemblyId: assemblyId });
-            // BasicMolStarWrapper.toggleSpin();
-

            addControl('Load Asym Unit', () => BasicMolStarWrapper.load({ url: url, format: format }));
            addControl('Load Assembly', () => BasicMolStarWrapper.load({ url: url, format: format, assemblyId: assemblyId }));
@@ -86,14 +79,14 @@

            addHeader('Camera');
            addControl('Toggle Spin', () => BasicMolStarWrapper.toggleSpin());
-            
+
            addSeparator();

            addHeader('Animation');

            // adjust this number to make the animation faster or slower
            // requires to "restart" the animation if changed
-            BasicMolStarWrapper.animate.modelIndex.maxFPS = 30;
+            BasicMolStarWrapper.animate.modelIndex.targetFps = 30;

            addControl('Play To End', () => BasicMolStarWrapper.animate.modelIndex.onceForward());
            addControl('Play To Start', () => BasicMolStarWrapper.animate.modelIndex.onceBackward());
@@ -104,6 +97,7 @@
            addHeader('Misc');

            addControl('Apply Stripes', () => BasicMolStarWrapper.coloring.applyStripes());
+            addControl('Default Coloring', () => BasicMolStarWrapper.coloring.applyDefault());

            addHeader('Interactivity');
            addControl('Highlight seq_id=7', () => BasicMolStarWrapper.interactivity.highlightOn());
@@ -114,7 +108,7 @@
            addControl('Static Superposition', () => BasicMolStarWrapper.tests.staticSuperposition());
            addControl('Dynamic Superposition', () => BasicMolStarWrapper.tests.dynamicSuperposition());
            addControl('Validation Tooltip', () => BasicMolStarWrapper.tests.toggleValidationTooltip());
-            
+
            addControl('Show Toasts', () => BasicMolStarWrapper.tests.showToasts());
            addControl('Hide Toasts', () => BasicMolStarWrapper.tests.hideToasts());

--- a/src/examples/basic-wrapper/index.ts
+++ b/src/examples/basic-wrapper/index.ts
@@ -0,0 +1,168 @@
+/**
+ * Copyright (c) 2019 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * @author David Sehnal <david.sehnal@gmail.com>
+ */
+
+import { EmptyLoci } from '../../mol-model/loci';
+import { StructureSelection } from '../../mol-model/structure';
+import { createPlugin } from '../../mol-plugin';
+import { DefaultPluginSpec } from '../../mol-plugin/spec';
+import { AnimateModelIndex } from '../../mol-plugin-state/animation/built-in/model-index';
+import { BuiltInTrajectoryFormat } from '../../mol-plugin-state/formats/trajectory';
+import { PluginCommands } from '../../mol-plugin/commands';
+import { PluginContext } from '../../mol-plugin/context';
+import { Script } from '../../mol-script/script';
+import { Color } from '../../mol-util/color';
+import { StripedResidues } from './coloring';
+import { CustomToastMessage } from './controls';
+import './index.html';
+import { buildStaticSuperposition, dynamicSuperpositionTest, StaticSuperpositionTestData } from './superposition';
+import { PDBeStructureQualityReport } from '../../extensions/pdbe';
+import { Asset } from '../../mol-util/assets';
+require('mol-plugin-ui/skin/light.scss');
+
+type LoadParams = { url: string, format?: BuiltInTrajectoryFormat, isBinary?: boolean, assemblyId?: string }
+
+class BasicWrapper {
+    plugin: PluginContext;
+
+    init(target: string | HTMLElement) {
+        this.plugin = createPlugin(typeof target === 'string' ? document.getElementById(target)! : target, {
+            ...DefaultPluginSpec(),
+            layout: {
+                initial: {
+                    isExpanded: false,
+                    showControls: false
+                },
+                controls: {
+                    // left: 'none'
+                }
+            },
+            components: {
+                remoteState: 'none'
+            }
+        });
+
+        this.plugin.representation.structure.themes.colorThemeRegistry.add(StripedResidues.colorThemeProvider!);
+        this.plugin.managers.lociLabels.addProvider(StripedResidues.labelProvider!);
+        this.plugin.customModelProperties.register(StripedResidues.propertyProvider, true);
+    }
+
+    async load({ url, format = 'mmcif', isBinary = false, assemblyId = '' }: LoadParams) {
+        await this.plugin.clear();
+
+        const data = await this.plugin.builders.data.download({ url: Asset.Url(url), isBinary }, { state: { isGhost: true } });
+        const trajectory = await this.plugin.builders.structure.parseTrajectory(data, format);
+
+        await this.plugin.builders.structure.hierarchy.applyPreset(trajectory, 'default', {
+            structure: assemblyId ? {
+                name: 'assembly',
+                params: { id: assemblyId }
+            } : {
+                name: 'model',
+                params: { }
+            },
+            showUnitcell: false,
+            representationPreset: 'auto'
+        });
+    }
+
+    setBackground(color: number) {
+        PluginCommands.Canvas3D.SetSettings(this.plugin, { settings: props => { props.renderer.backgroundColor = Color(color); } });
+    }
+
+    toggleSpin() {
+        if (!this.plugin.canvas3d) return;
+
+        PluginCommands.Canvas3D.SetSettings(this.plugin, {
+            settings: props => {
+                props.trackball.spin = !props.trackball.spin;
+            }
+        });
+        if (!this.plugin.canvas3d.props.trackball.spin) PluginCommands.Camera.Reset(this.plugin, {});
+    }
+
+    private animateModelIndexTargetFps() {
+        return Math.max(1, this.animate.modelIndex.targetFps | 0);
+    }
+
+    animate = {
+        modelIndex: {
+            targetFps: 8,
+            onceForward: () => { this.plugin.managers.animation.play(AnimateModelIndex, { duration: { name: 'computed', params: { targetFps: this.animateModelIndexTargetFps() } }, mode: { name: 'once', params: { direction: 'forward' } } }); },
+            onceBackward: () => { this.plugin.managers.animation.play(AnimateModelIndex, { duration: { name: 'computed', params: { targetFps: this.animateModelIndexTargetFps() } }, mode: { name: 'once', params: { direction: 'backward' } } }); },
+            palindrome: () => { this.plugin.managers.animation.play(AnimateModelIndex, { duration: { name: 'computed', params: { targetFps: this.animateModelIndexTargetFps() } }, mode: { name: 'palindrome', params: {} } }); },
+            loop: () => { this.plugin.managers.animation.play(AnimateModelIndex, { duration: { name: 'computed', params: { targetFps: this.animateModelIndexTargetFps() } }, mode: { name: 'loop', params: {} } }); },
+            stop: () => this.plugin.managers.animation.stop()
+        }
+    }
+
+    coloring = {
+        applyStripes: async () => {
+            this.plugin.dataTransaction(async () => {
+                for (const s of this.plugin.managers.structure.hierarchy.current.structures) {
+                    await this.plugin.managers.structure.component.updateRepresentationsTheme(s.components, { color: StripedResidues.propertyProvider.descriptor.name as any });
+                }
+            });
+        },
+        applyDefault: async () => {
+            this.plugin.dataTransaction(async () => {
+                for (const s of this.plugin.managers.structure.hierarchy.current.structures) {
+                    await this.plugin.managers.structure.component.updateRepresentationsTheme(s.components, { color: 'default' });
+                }
+            });
+        }
+    }
+
+    interactivity = {
+        highlightOn: () => {
+            const data = this.plugin.managers.structure.hierarchy.current.structures[0]?.cell.obj?.data;
+            if (!data) return;
+
+            const seq_id = 7;
+            const sel = Script.getStructureSelection(Q => Q.struct.generator.atomGroups({
+                'residue-test': Q.core.rel.eq([Q.struct.atomProperty.macromolecular.label_seq_id(), seq_id]),
+                'group-by': Q.struct.atomProperty.macromolecular.residueKey()
+            }), data);
+            const loci = StructureSelection.toLociWithSourceUnits(sel);
+            this.plugin.managers.interactivity.lociHighlights.highlightOnly({ loci });
+        },
+        clearHighlight: () => {
+            this.plugin.managers.interactivity.lociHighlights.highlightOnly({ loci: EmptyLoci });
+        }
+    }
+
+    tests = {
+        staticSuperposition: async () => {
+            await this.plugin.clear();
+            return buildStaticSuperposition(this.plugin, StaticSuperpositionTestData);
+        },
+        dynamicSuperposition: async () => {
+            await this.plugin.clear();
+            return dynamicSuperpositionTest(this.plugin, ['1tqn', '2hhb', '4hhb'], 'HEM');
+        },
+        toggleValidationTooltip: () => {
+            return this.plugin.state.updateBehavior(PDBeStructureQualityReport, params => { params.showTooltip = !params.showTooltip; });
+        },
+        showToasts: () => {
+            PluginCommands.Toast.Show(this.plugin, {
+                title: 'Toast 1',
+                message: 'This is an example text, timeout 3s',
+                key: 'toast-1',
+                timeoutMs: 3000
+            });
+            PluginCommands.Toast.Show(this.plugin, {
+                title: 'Toast 2',
+                message: CustomToastMessage,
+                key: 'toast-2'
+            });
+        },
+        hideToasts: () => {
+            PluginCommands.Toast.Hide(this.plugin, { key: 'toast-1' });
+            PluginCommands.Toast.Hide(this.plugin, { key: 'toast-2' });
+        }
+    }
+}
+
+(window as any).BasicMolStarWrapper = new BasicWrapper();
--- a/src/examples/basic-wrapper/superposition.ts
+++ b/src/examples/basic-wrapper/superposition.ts
@@ -0,0 +1,119 @@
+/**
+ * Copyright (c) 2019 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * @author David Sehnal <david.sehnal@gmail.com>
+ */
+
+import { Mat4 } from '../../mol-math/linear-algebra';
+import { QueryContext, StructureSelection } from '../../mol-model/structure';
+import { superpose } from '../../mol-model/structure/structure/util/superposition';
+import { PluginStateObject as PSO } from '../../mol-plugin-state/objects';
+import { PluginContext } from '../../mol-plugin/context';
+import { MolScriptBuilder as MS } from '../../mol-script/language/builder';
+import { Expression } from '../../mol-script/language/expression';
+import { compile } from '../../mol-script/runtime/query/compiler';
+import { StateObjectRef } from '../../mol-state';
+import { BuiltInTrajectoryFormat } from '../../mol-plugin-state/formats/trajectory';
+import { StateTransforms } from '../../mol-plugin-state/transforms';
+import { Asset } from '../../mol-util/assets';
+
+export type SuperpositionTestInput = {
+    pdbId: string,
+    auth_asym_id: string,
+    matrix: Mat4
+}[];
+
+export function buildStaticSuperposition(plugin: PluginContext, src: SuperpositionTestInput) {
+    return plugin.dataTransaction(async () => {
+        for (const s of src) {
+            const { structure } = await loadStructure(plugin, `https://www.ebi.ac.uk/pdbe/static/entry/${s.pdbId}_updated.cif`, 'mmcif');
+            await transform(plugin, structure, s.matrix);
+            const chain = await plugin.builders.structure.tryCreateComponentFromExpression(structure, chainSelection(s.auth_asym_id), `Chain ${s.auth_asym_id}`);
+            if (chain) await plugin.builders.structure.representation.addRepresentation(chain, { type: 'cartoon' });
+        }
+    });
+}
+
+export const StaticSuperpositionTestData: SuperpositionTestInput = [
+    {
+        pdbId: '1aj5', auth_asym_id: 'A', matrix: Mat4.identity()
+    },
+    {
+        pdbId: '1df0', auth_asym_id: 'B', matrix: Mat4.ofRows([
+            [0.406, 0.879, 0.248, -200.633],
+            [0.693, -0.473, 0.544, 73.403],
+            [0.596, -0.049, -0.802, -14.209],
+            [0, 0, 0, 1]])
+    },
+    {
+        pdbId: '1dvi', auth_asym_id: 'A', matrix: Mat4.ofRows([
+            [-0.053, -0.077, 0.996, -45.633],
+            [-0.312, 0.949, 0.057, -12.255],
+            [-0.949, -0.307, -0.074, 53.562],
+            [0, 0, 0, 1]])
+    }
+];
+
+export function dynamicSuperpositionTest(plugin: PluginContext, src: string[], comp_id: string) {
+    return plugin.dataTransaction(async () => {
+        for (const s of src) {
+            await loadStructure(plugin, `https://www.ebi.ac.uk/pdbe/static/entry/${s}_updated.cif`, 'mmcif');
+        }
+
+        const pivot = MS.struct.filter.first([
+            MS.struct.generator.atomGroups({
+                'residue-test': MS.core.rel.eq([MS.struct.atomProperty.macromolecular.label_comp_id(), comp_id]),
+                'group-by': MS.struct.atomProperty.macromolecular.residueKey()
+            })
+        ]);
+
+        const rest = MS.struct.modifier.exceptBy({
+            0: MS.struct.modifier.includeSurroundings({
+                0: pivot,
+                radius: 5
+            }),
+            by: pivot
+        });
+
+        const query = compile<StructureSelection>(pivot);
+        const xs = plugin.managers.structure.hierarchy.current.structures;
+        const selections = xs.map(s => StructureSelection.toLociWithCurrentUnits(query(new QueryContext(s.cell.obj!.data))));
+
+        const transforms = superpose(selections);
+
+        await siteVisual(plugin, xs[0].cell, pivot, rest);
+        for (let i = 1; i < selections.length; i++) {
+            await transform(plugin, xs[i].cell, transforms[i - 1].bTransform);
+            await siteVisual(plugin, xs[i].cell, pivot, rest);
+        }
+    });
+}
+
+async function siteVisual(plugin: PluginContext, s: StateObjectRef<PSO.Molecule.Structure>, pivot: Expression, rest: Expression) {
+    const center = await plugin.builders.structure.tryCreateComponentFromExpression(s, pivot, 'pivot');
+    if (center) await plugin.builders.structure.representation.addRepresentation(center, { type: 'ball-and-stick', color: 'residue-name' });
+
+    const surr = await plugin.builders.structure.tryCreateComponentFromExpression(s, rest, 'rest');
+    if (surr) await plugin.builders.structure.representation.addRepresentation(surr, { type: 'ball-and-stick', color: 'uniform', size: 'uniform', sizeParams: { value: 0.33 } });
+}
+
+async function loadStructure(plugin: PluginContext, url: string, format: BuiltInTrajectoryFormat, assemblyId?: string) {
+    const data = await plugin.builders.data.download({ url: Asset.Url(url) });
+    const trajectory = await plugin.builders.structure.parseTrajectory(data, format);
+    const model = await plugin.builders.structure.createModel(trajectory);
+    const structure = await plugin.builders.structure.createStructure(model, assemblyId ? { name: 'assembly', params: { id: assemblyId } } : void 0);
+
+    return { data, trajectory, model, structure };
+}
+
+function chainSelection(auth_asym_id: string) {
+    return MS.struct.generator.atomGroups({
+        'chain-test': MS.core.rel.eq([MS.struct.atomProperty.macromolecular.auth_asym_id(), auth_asym_id])
+    });
+}
+
+function transform(plugin: PluginContext, s: StateObjectRef<PSO.Molecule.Structure>, matrix: Mat4) {
+    const b = plugin.state.data.build().to(s)
+        .insert(StateTransforms.Model.TransformStructureConformation, { transform: { name: 'matrix', params: { data: matrix, transpose: false } } });
+    return plugin.runTask(plugin.state.data.updateTree(b));
+}
--- a/src/examples/domain-annotation-server/mapping.ts
+++ b/src/examples/domain-annotation-server/mapping.ts
@@ -4,12 +4,12 @@
 * @author David Sehnal <david.sehnal@gmail.com>
 */

-import { Table } from '../../mol-data/db'
-import { CifWriter } from '../../mol-io/writer/cif'
-import * as S from './schemas'
+import { Table } from '../../mol-data/db';
+import { CifWriter } from '../../mol-io/writer/cif';
+import * as S from './schemas';
 // import { getCategoryInstanceProvider } from './utils'

-export default function create(allData: any) {
+export function createMapping(allData: any) {
    const mols = Object.keys(allData);
    const enc = CifWriter.createEncoder();
    enc.startDataBlock(mols[0]);
--- a/src/examples/domain-annotation-server/schemas.ts
+++ b/src/examples/domain-annotation-server/schemas.ts
@@ -4,21 +4,21 @@
 * @author David Sehnal <david.sehnal@gmail.com>
 */

-import { Column } from '../../mol-data/db'
+import { Column } from '../../mol-data/db';

 import Type = Column.Schema

 export const Sources = {
    id: Type.str,
    count: Type.int
-}
+};
 export type Sources = typeof Sources

 export const Base = {
    id: Type.str,
    identifier: Type.str,
    mapping_group_id: Type.int
-}
+};
 export type Base = typeof Base

 export const mapping = {
@@ -36,17 +36,17 @@ export const mapping = {
    end_label_seq_id: Type.int,
    end_auth_seq_id: Type.int,
    pdbx_end_PDB_ins_code: Type.str
-}
+};
 export type mapping = typeof mapping

 export const Pfam = {
    description: Type.str
-}
+};
 export type Pfam = typeof Pfam

 export const InterPro = {
    name: Type.str
-}
+};
 export type InterPro = typeof InterPro

 export const CATH = {
@@ -56,32 +56,32 @@ export const CATH = {
    identifier: Type.str,
    class: Type.str,
    topology: Type.str,
-}
+};
 export type CATH = typeof CATH

 export const EC = {
    accepted_name: Type.str,
    reaction: Type.str,
    systematic_name: Type.str
-}
+};
 export type EC = typeof EC

 export const UniProt = {
    name: Type.str
-}
+};
 export type UniProt = typeof UniProt

 export const SCOP = {
    sccs: Type.str,
    description: Type.str
-}
+};
 export type SCOP = typeof SCOP

 export const GO = {
    category: Type.str,
    definition: Type.str,
    name: Type.str
-}
+};
 export type GO = typeof GO

 export const categories = {
@@ -92,4 +92,4 @@ export const categories = {
    UniProt,
    SCOP,
    GO
-}
+};
--- a/src/examples/domain-annotation-server/server.ts
+++ b/src/examples/domain-annotation-server/server.ts
@@ -4,9 +4,9 @@
 * @author David Sehnal <david.sehnal@gmail.com>
 */

-import * as express from 'express'
-import fetch from 'node-fetch'
-import createMapping from './mapping'
+import express from 'express';
+import fetch from 'node-fetch';
+import { createMapping } from './mapping';

 async function getMappings(id: string) {
    const data = await fetch(`https://www.ebi.ac.uk/pdbe/api/mappings/${id}`);
@@ -19,7 +19,7 @@ let PORT = process.env.port || 1338;

 const app = express();

-const PREFIX = '/'
+const PREFIX = '/';

 app.get(`${PREFIX}/:id`, async (req, res) => {
    try {
@@ -41,7 +41,7 @@ app.get(`${PREFIX}/:id`, async (req, res) => {
 app.get(`${PREFIX}`, (req, res) => {
    res.writeHead(200, { 'Content-Type': 'text/plain; charset=utf-8' });
    res.end('Usage: /pdb_id, e.g. /1tqn');
-})
+});

 app.listen(PORT);

--- a/src/examples/domain-annotation-server/test.ts
+++ b/src/examples/domain-annotation-server/test.ts
@@ -4,8 +4,8 @@
 * @author David Sehnal <david.sehnal@gmail.com>
 */

-import fetch from 'node-fetch'
-import createMapping from './mapping'
+import fetch from 'node-fetch';
+import { createMapping } from './mapping';

 (async function () {
    const data = await fetch('https://www.ebi.ac.uk/pdbe/api/mappings/1tqn?pretty=true');
--- a/src/apps/demos/lighting/index.html
+++ b/src/apps/demos/lighting/index.html
@@ -12,18 +12,18 @@
            }
            #app {
                position: absolute;
-                left: 160px;
-                top: 100px;
-                width: 600px;
-                height: 600px;
-                border: 1px solid #ccc;
+                width: 100%;
+                height: 100%;
            }

            #controls {
                position: absolute;
                width: 150px;
-                top: 100px;
-                left: 780px;
+                bottom: 100px;
+                right: 50px;
+                z-index: 10;
+                font-family: sans-serif;
+                font-size: smaller;
            }

            #controls > button {
@@ -38,21 +38,21 @@
                display: block;
            }
        </style>
-        <link rel="stylesheet" type="text/css" href="app.css" />
+        <link rel="stylesheet" type="text/css" href="molstar.css" />
        <script type="text/javascript" src="./index.js"></script>
    </head>
    <body>
        <div id='controls'></div>
        <div id="app"></div>
-        <script>      
+        <script>
            LightingDemo.init('app')
-            LightingDemo.load({ url: 'https://files.rcsb.org/download/1M07.cif', assemblyId: '1' })
-            
+            LightingDemo.load({ url: 'https://models.rcsb.org/4KTC.bcif', assemblyId: '1' }, 5, 1.3)
+
            addHeader('Example PDB IDs');
-            addControl('1M07', () => LightingDemo.load({ url: 'https://files.rcsb.org/download/1M07.cif', assemblyId: '1' }));
-            addControl('6HY0', () => LightingDemo.load({ url: 'https://files.rcsb.org/download/6HY0.cif', assemblyId: '1' }));
-            addControl('6QVK', () => LightingDemo.load({ url: 'https://files.rcsb.org/download/6QVK.cif', assemblyId: '1' }));
-            addControl('1RB8', () => LightingDemo.load({ url: 'https://files.rcsb.org/download/1RB8.cif', assemblyId: '1' }));
+            addControl('4KTC', () => LightingDemo.load({ url: 'https://models.rcsb.org/4KTC.bcif', assemblyId: '1' }, 5, 1.3));
+            addControl('5FJ5', () => LightingDemo.load({ url: 'https://models.rcsb.org/5FJ5.bcif', assemblyId: '1' }, 8, 1.8));
+            addControl('1UPN', () => LightingDemo.load({ url: 'https://models.rcsb.org/1UPN.bcif', assemblyId: '1' }, 7, 1.6));
+            addControl('1RB8', () => LightingDemo.load({ url: 'https://models.rcsb.org/1RB8.bcif', assemblyId: '1' }, 6, 1.3));

            addSeparator()

--- a/src/examples/lighting/index.ts
+++ b/src/examples/lighting/index.ts
@@ -0,0 +1,129 @@
+/**
+ * Copyright (c) 2019 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * @author Alexander Rose <alexander.rose@weirdbyte.de>
+ */
+
+import { Canvas3DProps } from '../../mol-canvas3d/canvas3d';
+import { createPlugin } from '../../mol-plugin';
+import { DefaultPluginSpec } from '../../mol-plugin/spec';
+import { BuiltInTrajectoryFormat } from '../../mol-plugin-state/formats/trajectory';
+import { PluginCommands } from '../../mol-plugin/commands';
+import { PluginContext } from '../../mol-plugin/context';
+import './index.html';
+import { Asset } from '../../mol-util/assets';
+require('mol-plugin-ui/skin/light.scss');
+
+type LoadParams = { url: string, format?: BuiltInTrajectoryFormat, isBinary?: boolean, assemblyId?: string }
+
+type _Preset = Pick<Canvas3DProps, 'multiSample' | 'postprocessing' | 'renderer'>
+type Preset = { [K in keyof _Preset]: Partial<_Preset[K]> }
+
+const Canvas3DPresets = {
+    illustrative: <Preset> {
+        multiSample: {
+            mode: 'temporal' as Canvas3DProps['multiSample']['mode']
+        },
+        postprocessing: {
+            occlusion: { name: 'on', params: { samples: 32, radius: 6, bias: 1.4, blurKernelSize: 15 } },
+            outline: { name: 'on', params: { scale: 1, threshold: 0.1 } }
+        },
+        renderer: {
+            style: { name: 'flat', params: {} }
+        }
+    },
+    occlusion: <Preset> {
+        multiSample: {
+            mode: 'temporal' as Canvas3DProps['multiSample']['mode']
+        },
+        postprocessing: {
+            occlusion: { name: 'on', params: { samples: 32, radius: 6, bias: 1.4, blurKernelSize: 15 } },
+            outline: { name: 'off', params: { } }
+        },
+        renderer: {
+            style: { name: 'matte', params: {} }
+        }
+    },
+    standard: <Preset> {
+        multiSample: {
+            mode: 'off' as Canvas3DProps['multiSample']['mode']
+        },
+        postprocessing: {
+            occlusion: { name: 'off', params: { } },
+            outline: { name: 'off', params: { } }
+        },
+        renderer: {
+            style: { name: 'matte', params: {} }
+        }
+    }
+};
+
+
+type Canvas3DPreset = keyof typeof Canvas3DPresets
+
+class LightingDemo {
+    plugin: PluginContext;
+
+    private radius = 5;
+    private bias = 1.1;
+    private preset: Canvas3DPreset = 'illustrative';
+
+    init(target: string | HTMLElement) {
+        this.plugin = createPlugin(typeof target === 'string' ? document.getElementById(target)! : target, {
+            ...DefaultPluginSpec(),
+            layout: {
+                initial: {
+                    isExpanded: false,
+                    showControls: false
+                },
+                controls: { left: 'none', right: 'none', top: 'none', bottom: 'none' }
+            }
+        });
+
+        this.setPreset('illustrative');
+    }
+
+    setPreset(preset: Canvas3DPreset) {
+        const props = Canvas3DPresets[preset];
+        if (props.postprocessing.occlusion?.name === 'on') {
+            props.postprocessing.occlusion.params.radius = this.radius;
+            props.postprocessing.occlusion.params.bias = this.bias;
+        }
+        PluginCommands.Canvas3D.SetSettings(this.plugin, { settings: {
+            ...props,
+            multiSample: {
+                ...this.plugin.canvas3d!.props.multiSample,
+                ...props.multiSample
+            },
+            renderer: {
+                ...this.plugin.canvas3d!.props.renderer,
+                ...props.renderer
+            },
+            postprocessing: {
+                ...this.plugin.canvas3d!.props.postprocessing,
+                ...props.postprocessing
+            },
+        }});
+    }
+
+    async load({ url, format = 'mmcif', isBinary = true, assemblyId = '' }: LoadParams, radius: number, bias: number) {
+        await this.plugin.clear();
+
+        const data = await this.plugin.builders.data.download({ url: Asset.Url(url), isBinary }, { state: { isGhost: true } });
+        const trajectory = await this.plugin.builders.structure.parseTrajectory(data, format);
+        const model = await this.plugin.builders.structure.createModel(trajectory);
+        const structure = await this.plugin.builders.structure.createStructure(model, assemblyId ? { name: 'assembly', params: { id: assemblyId } } : { name: 'model', params: { } });
+
+        const polymer = await this.plugin.builders.structure.tryCreateComponentStatic(structure, 'polymer');
+        if (polymer) await this.plugin.builders.structure.representation.addRepresentation(polymer, { type: 'spacefill', color: 'illustrative' });
+
+        const ligand = await this.plugin.builders.structure.tryCreateComponentStatic(structure, 'ligand');
+        if (ligand) await this.plugin.builders.structure.representation.addRepresentation(ligand, { type: 'ball-and-stick', color: 'element-symbol', colorParams: { carbonColor: { name: 'element-symbol', params: {} } } });
+
+        this.radius = radius;
+        this.bias = bias;
+        this.setPreset(this.preset);
+    }
+}
+
+(window as any).LightingDemo = new LightingDemo();
--- a/src/examples/proteopedia-wrapper/annotation.ts
+++ b/src/examples/proteopedia-wrapper/annotation.ts
@@ -9,6 +9,7 @@ import { CustomElementProperty } from '../../mol-model-props/common/custom-eleme
 import { Model, ElementIndex, ResidueIndex } from '../../mol-model/structure';
 import { Color } from '../../mol-util/color';
 import { CustomProperty } from '../../mol-model-props/common/custom-property';
+import { Asset } from '../../mol-util/assets';

 const EvolutionaryConservationPalette: Color[] = [
    [255, 255, 129], // insufficient
@@ -30,9 +31,9 @@ export const EvolutionaryConservation = CustomElementProperty.create<number>({
    type: 'static',
    async getData(model: Model, ctx: CustomProperty.Context) {
        const id = model.entryId.toLowerCase();
-        const url = `https://proteopedia.org/cgi-bin/cnsrf?${id}`
-        const json = await ctx.fetch({ url, type: 'json' }).runInContext(ctx.runtime)
-        const annotations = (json && json.residueAnnotations) || [];
+        const url = Asset.getUrlAsset(ctx.assetManager, `https://proteopedia.org/cgi-bin/cnsrf?${id}`);
+        const json = await ctx.assetManager.resolve(url, 'json').runInContext(ctx.runtime);
+        const annotations = json.data?.residueAnnotations || [];

        const conservationMap = new Map<string, number>();

@@ -58,7 +59,7 @@ export const EvolutionaryConservation = CustomElementProperty.create<number>({
            }
        }

-        return map;
+        return { value: map, assets: [json] };
    },
    coloring: {
        getColor(e: number) {
@@ -68,7 +69,7 @@ export const EvolutionaryConservation = CustomElementProperty.create<number>({
        defaultColor: EvolutionaryConservationDefaultColor
    },
    getLabel(e) {
-        if (e === 10) return `Evolutionary Conservation: InsufficientData`;
+        if (e === 10) return `Evolutionary Conservation: Insufficient Data`;
        return e ? `Evolutionary Conservation: ${e}` : void 0;
    }
 });
--- a/src/examples/proteopedia-wrapper/coloring.ts
+++ b/src/examples/proteopedia-wrapper/coloring.ts
@@ -11,58 +11,58 @@ import { Unit, StructureProperties, StructureElement, Bond } from '../../mol-mod
 import { Color } from '../../mol-util/color';
 import { Location } from '../../mol-model/location';
 import { ColorTheme, LocationColor } from '../../mol-theme/color';
-import { ParamDefinition as PD } from '../../mol-util/param-definition'
+import { ParamDefinition as PD } from '../../mol-util/param-definition';
 import { ThemeDataContext } from '../../mol-theme/theme';
 import { Column } from '../../mol-data/db';

-const Description = 'Gives every chain a color from a list based on its `asym_id` value.'
+const Description = 'Gives every chain a color from a list based on its `asym_id` value.';

 export function createProteopediaCustomTheme(colors: number[]) {
    const ProteopediaCustomColorThemeParams = {
        colors: PD.ObjectList({ color: PD.Color(Color(0xffffff)) }, ({ color }) => Color.toHexString(color),
            { defaultValue: colors.map(c => ({ color: Color(c) })) })
-    }
+    };
    type ProteopediaCustomColorThemeParams = typeof ProteopediaCustomColorThemeParams
    function getChainIdColorThemeParams(ctx: ThemeDataContext) {
-        return ProteopediaCustomColorThemeParams // TODO return copy
+        return ProteopediaCustomColorThemeParams; // TODO return copy
    }

    function getAsymId(unit: Unit): StructureElement.Property<string> {
        switch (unit.kind) {
            case Unit.Kind.Atomic:
-                return StructureProperties.chain.label_asym_id
+                return StructureProperties.chain.label_asym_id;
            case Unit.Kind.Spheres:
            case Unit.Kind.Gaussians:
-                return StructureProperties.coarse.asym_id
+                return StructureProperties.coarse.asym_id;
        }
    }

    function addAsymIds(map: Map<string, number>, data: Column<string>) {
-        let j = map.size
+        let j = map.size;
        for (let o = 0, ol = data.rowCount; o < ol; ++o) {
-            const k = data.value(o)
+            const k = data.value(o);
            if (!map.has(k)) {
-                map.set(k, j)
-                j += 1
+                map.set(k, j);
+                j += 1;
            }
        }
    }

    function ProteopediaCustomColorTheme(ctx: ThemeDataContext, props: PD.Values<ProteopediaCustomColorThemeParams>): ColorTheme<ProteopediaCustomColorThemeParams> {
-        let color: LocationColor
+        let color: LocationColor;

        const colors = props.colors, colorCount = colors.length, defaultColor = colors[0].color;

        if (ctx.structure) {
-            const l = StructureElement.Location.create(ctx.structure)
-            const { models } = ctx.structure
-            const asymIdSerialMap = new Map<string, number>()
+            const l = StructureElement.Location.create(ctx.structure);
+            const { models } = ctx.structure;
+            const asymIdSerialMap = new Map<string, number>();
            for (let i = 0, il = models.length; i < il; ++i) {
-                const m = models[i]
-                addAsymIds(asymIdSerialMap, m.atomicHierarchy.chains.label_asym_id)
+                const m = models[i];
+                addAsymIds(asymIdSerialMap, m.atomicHierarchy.chains.label_asym_id);
                if (m.coarseHierarchy.isDefined) {
-                    addAsymIds(asymIdSerialMap, m.coarseHierarchy.spheres.asym_id)
-                    addAsymIds(asymIdSerialMap, m.coarseHierarchy.gaussians.asym_id)
+                    addAsymIds(asymIdSerialMap, m.coarseHierarchy.spheres.asym_id);
+                    addAsymIds(asymIdSerialMap, m.coarseHierarchy.gaussians.asym_id);
                }
            }

@@ -72,16 +72,16 @@ export function createProteopediaCustomTheme(colors: number[]) {
                    const o = asymIdSerialMap.get(asym_id(location)) || 0;
                    return colors[o % colorCount].color;
                } else if (Bond.isLocation(location)) {
-                    const asym_id = getAsymId(location.aUnit)
-                    l.unit = location.aUnit
-                    l.element = location.aUnit.elements[location.aIndex]
+                    const asym_id = getAsymId(location.aUnit);
+                    l.unit = location.aUnit;
+                    l.element = location.aUnit.elements[location.aIndex];
                    const o = asymIdSerialMap.get(asym_id(l)) || 0;
                    return colors[o % colorCount].color;
                }
-                return defaultColor
-            }
+                return defaultColor;
+            };
        } else {
-            color = () => defaultColor
+            color = () => defaultColor;
        }

        return {
@@ -91,7 +91,7 @@ export function createProteopediaCustomTheme(colors: number[]) {
            props,
            description: Description,
            legend: undefined
-        }
+        };
    }

    return {
@@ -102,5 +102,5 @@ export function createProteopediaCustomTheme(colors: number[]) {
        getParams: getChainIdColorThemeParams,
        defaultValues: PD.getDefaultValues(ProteopediaCustomColorThemeParams),
        isApplicable: (ctx: ThemeDataContext) => !!ctx.structure
-    }
+    };
 }
--- a/src/examples/proteopedia-wrapper/helpers.ts
+++ b/src/examples/proteopedia-wrapper/helpers.ts
@@ -4,12 +4,11 @@
 * @author David Sehnal <david.sehnal@gmail.com>
 */

-import { ResidueIndex, Model } from '../../mol-model/structure';
+import { ModelSymmetry } from '../../mol-model-formats/structure/property/symmetry';
+import { Model, ResidueIndex } from '../../mol-model/structure';
+import { PluginContext } from '../../mol-plugin/context';
 import { StructureRepresentationRegistry } from '../../mol-repr/structure/registry';
 import { ColorTheme } from '../../mol-theme/color';
-import { PolymerType } from '../../mol-model/structure/model/types';
-import { PluginContext } from '../../mol-plugin/context';
-import { ModelSymmetry } from '../../mol-model-formats/structure/property/symmetry';

 export interface ModelInfo {
    hetResidues: { name: string, indices: ResidueIndex[] }[],
@@ -54,13 +53,12 @@ export namespace ModelInfo {
        const hetMap = new Map<string, ModelInfo['hetResidues'][0]>();

        for (let rI = 0 as ResidueIndex; rI < residueCount; rI++) {
-            if (model.atomicHierarchy.derived.residue.polymerType[rI] !== PolymerType.NA) continue;
-
            const cI = chainIndex[residueOffsets[rI]];
            const eI = model.atomicHierarchy.index.getEntityFromChain(cI);
-            if (model.entities.data.type.value(eI) === 'water') continue;
+            const entityType = model.entities.data.type.value(eI);
+            if (entityType !== 'non-polymer' && entityType !== 'branched') continue;

-            const comp_id = model.atomicHierarchy.residues.label_comp_id.value(rI);
+            const comp_id = model.atomicHierarchy.atoms.label_comp_id.value(residueOffsets[rI]);

            let lig = hetMap.get(comp_id);
            if (!lig) {
@@ -72,7 +70,7 @@ export namespace ModelInfo {
        }

        const preferredAssemblyId = await pref;
-        const symmetry = ModelSymmetry.Provider.get(model)
+        const symmetry = ModelSymmetry.Provider.get(model);

        return {
            hetResidues: hetResidues,
@@ -86,6 +84,7 @@ export type SupportedFormats = 'cif' | 'pdb'
 export interface LoadParams {
    url: string,
    format?: SupportedFormats,
+    isBinary?: boolean,
    assemblyId?: string,
    representationStyle?: RepresentationStyle
 }
--- a/src/examples/proteopedia-wrapper/index.html
+++ b/src/examples/proteopedia-wrapper/index.html
@@ -48,7 +48,7 @@
                width: 300px;
            }
        </style>
-        <link rel="stylesheet" type="text/css" href="app.css" />
+        <link rel="stylesheet" type="text/css" href="molstar.css" />
        <script type="text/javascript" src="./index.js"></script>
    </head>
    <body>
@@ -60,11 +60,12 @@
                <option value='cif' selected>CIF</option>
                <option value='pdb'>PDB</option>
            </select>
+            <input type='checkbox' id='isBinary' style="display: inline-block; width: auto" /> <label for="isBinary"> Binary</label><br />
        </div>
        <div id="app"></div>
        <div id="volume-streaming-wrapper"></div>
        <script>
-            // it might be a good idea to define these colors in a separate script file 
+            // it might be a good idea to define these colors in a separate script file
            var CustomColors = [0x00ff00, 0x0000ff];

            // create an instance of the plugin
@@ -73,24 +74,28 @@
            console.log('Wrapper version', MolStarProteopediaWrapper.VERSION_MAJOR, MolStarProteopediaWrapper.VERSION_MINOR);

            function $(id) { return document.getElementById(id); }
-        
-            var pdbId = '1cbs', assemblyId= 'preferred';
-            var url = 'https://www.ebi.ac.uk/pdbe/static/entry/' + pdbId + '_updated.cif';
+
+            var pdbId = '1cbs', assemblyId= 'preferred', isBinary = true;
+            var url = 'https://www.ebi.ac.uk/pdbe/entry-files/download/' + pdbId + '.bcif'
            var format = 'cif';
-            
+
            $('url').value = url;
            $('url').onchange = function (e) { url = e.target.value; }
            $('assemblyId').value = assemblyId;
            $('assemblyId').onchange = function (e) { assemblyId = e.target.value; }
            $('format').value = format;
            $('format').onchange = function (e) { format = e.target.value; }
+            $('isBinary').checked = isBinary;
+            $('isBinary').onchange = function (e) { isBinary = !!e.target.checked; };

-            // var url = 'https://www.ebi.ac.uk/pdbe/entry-files/pdb' + pdbId + '.ent';
-            // var format = 'pdb';
-            // var assemblyId = 'deposited';
+            function loadAndSnapshot(params) {
+                PluginWrapper.load(params).then(() => {
+                    setTimeout(() => snapshot = PluginWrapper.plugin.state.getSnapshot({ canvas3d: false /* do not save spinning state */ }), 500);
+                });
+            }

            var representationStyle = {
-                sequence: { coloring: 'proteopedia-custom' }, // or just { }
+                // sequence: { coloring: 'proteopedia-custom' }, // or just { }
                hetGroups: { kind: 'ball-and-stick' }, // or 'spacefill
                water: { hide: true },
                snfg3d: { hide: false }
@@ -100,7 +105,7 @@
                customColorList: CustomColors
            });
            PluginWrapper.setBackground(0xffffff);
-            PluginWrapper.load({ url: url, format: format, assemblyId: assemblyId, representationStyle: representationStyle });
+            loadAndSnapshot({ url: url, format: format, isBinary: isBinary, assemblyId: assemblyId, representationStyle: representationStyle });
            PluginWrapper.toggleSpin();

            PluginWrapper.events.modelInfo.subscribe(function (info) {
@@ -108,8 +113,8 @@
                listHetGroups(info);
            });

-            addControl('Load Asym Unit', () => PluginWrapper.load({ url: url, format: format }));
-            addControl('Load Assembly', () => PluginWrapper.load({ url: url, format: format, assemblyId: assemblyId }));
+            addControl('Load Asym Unit', () => loadAndSnapshot({ url: url, format: format, isBinary }));
+            addControl('Load Assembly', () => loadAndSnapshot({ url: url, format: format, isBinary, assemblyId: assemblyId }));

            addSeparator();

@@ -135,14 +140,14 @@
            // Same as "wheel icon" and Viewport options
            // addControl('Clip', () => PluginWrapper.viewport.setSettings({ clip: [33, 66] }));
            // addControl('Reset Clip', () => PluginWrapper.viewport.setSettings({ clip: [1, 100] }));
-            
+
            addSeparator();

            addHeader('Animation');

            // adjust this number to make the animation faster or slower
            // requires to "restart" the animation if changed
-            PluginWrapper.animate.modelIndex.maxFPS = 30;
+            PluginWrapper.animate.modelIndex.targetFps = 30;

            addControl('Play To End', () => PluginWrapper.animate.modelIndex.onceForward());
            addControl('Play To Start', () => PluginWrapper.animate.modelIndex.onceBackward());
@@ -168,21 +173,24 @@
            addControl('Init', () => PluginWrapper.experimentalData.init($('volume-streaming-wrapper')));
            addControl('Remove', () => PluginWrapper.experimentalData.remove());

-            addSeparator(); 
+            addSeparator();
            addHeader('State');

            var snapshot;
            addControl('Set Snapshot', () => {
-                snapshot = PluginWrapper.snapshot.get();
-                // could use JSON.stringify(snapshot) and upload the data
+                // const options = { data: true, behavior: false, animation: false, interactivity: false, canvas3d: false, camera: false, cameraTransition: false };
+                snapshot = PluginWrapper.plugin.state.getSnapshot(/** options */);
                // console.log(JSON.stringify(snapshot, null, 2));
            });
            addControl('Restore Snapshot', () => {
                if (!snapshot) return;
                PluginWrapper.snapshot.set(snapshot);
            });
-            addControl('Download Snapshot', () => {
-                snapshot = PluginWrapper.snapshot.download();
+            addControl('Download State', () => {
+                PluginWrapper.snapshot.download('molj');
+            });
+            addControl('Download Session', () => {
+                PluginWrapper.snapshot.download('molx');
            });

            ////////////////////////////////////////////////////////
@@ -218,7 +226,7 @@
                    var l = document.createElement('button');
                    l.innerText = r.name;
                    l.onclick = function () {
-                        PluginWrapper.hetGroups.focusFirst(r.name);
+                        PluginWrapper.hetGroups.focusFirst(r.name, { doNotLabelWaters: true });
                    };
                    div.appendChild(l);
                });
--- a/src/examples/proteopedia-wrapper/index.ts
+++ b/src/examples/proteopedia-wrapper/index.ts
@@ -5,34 +5,35 @@
 */

 import * as ReactDOM from 'react-dom';
-import { createPlugin, DefaultPluginSpec } from '../../mol-plugin';
-import './index.html'
-import { PluginContext } from '../../mol-plugin/context';
-import { PluginCommands } from '../../mol-plugin/commands';
-import { StateTransforms } from '../../mol-plugin-state/transforms';
-import { Color } from '../../mol-util/color';
-import { PluginStateObject as PSO, PluginStateObject } from '../../mol-plugin-state/objects';
-import { AnimateModelIndex } from '../../mol-plugin-state/animation/built-in';
-import { StateBuilder, StateObject, StateSelection } from '../../mol-state';
-import { EvolutionaryConservation } from './annotation';
-import { LoadParams, SupportedFormats, RepresentationStyle, ModelInfo, StateElements } from './helpers';
-import { RxEventHelper } from '../../mol-util/rx-event-helper';
-import { volumeStreamingControls } from './ui/controls';
-import { PluginState } from '../../mol-plugin/state';
-import { Scheduler } from '../../mol-task';
-import { createProteopediaCustomTheme } from './coloring';
-import { MolScriptBuilder as MS } from '../../mol-script/language/builder';
-import { ColorNames } from '../../mol-util/color/names';
-import { InitVolumeStreaming, CreateVolumeStreamingInfo } from '../../mol-plugin/behavior/dynamic/volume-streaming/transformers';
-import { DefaultCanvas3DParams, Canvas3DProps } from '../../mol-canvas3d/canvas3d';
+import { Canvas3DProps, DefaultCanvas3DParams } from '../../mol-canvas3d/canvas3d';
+import { createPlugin } from '../../mol-plugin';
+import { DefaultPluginSpec } from '../../mol-plugin/spec';
+import { AnimateModelIndex } from '../../mol-plugin-state/animation/built-in/model-index';
 import { createStructureRepresentationParams } from '../../mol-plugin-state/helpers/structure-representation-params';
-import { download } from '../../mol-util/download';
+import { PluginStateObject, PluginStateObject as PSO } from '../../mol-plugin-state/objects';
+import { StateTransforms } from '../../mol-plugin-state/transforms';
+import { CreateVolumeStreamingInfo, InitVolumeStreaming } from '../../mol-plugin/behavior/dynamic/volume-streaming/transformers';
+import { PluginCommands } from '../../mol-plugin/commands';
+import { PluginContext } from '../../mol-plugin/context';
+import { PluginState } from '../../mol-plugin/state';
+import { MolScriptBuilder as MS } from '../../mol-script/language/builder';
+import { StateBuilder, StateObject, StateSelection } from '../../mol-state';
+import { Asset } from '../../mol-util/assets';
+import { Color } from '../../mol-util/color';
+import { ColorNames } from '../../mol-util/color/names';
 import { getFormattedTime } from '../../mol-util/date';
-require('../../mol-plugin-ui/skin/light.scss')
+import { download } from '../../mol-util/download';
+import { RxEventHelper } from '../../mol-util/rx-event-helper';
+import { EvolutionaryConservation } from './annotation';
+import { createProteopediaCustomTheme } from './coloring';
+import { LoadParams, ModelInfo, RepresentationStyle, StateElements, SupportedFormats } from './helpers';
+import './index.html';
+import { volumeStreamingControls } from './ui/controls';
+require('../../mol-plugin-ui/skin/light.scss');

 class MolStarProteopediaWrapper {
    static VERSION_MAJOR = 5;
-    static VERSION_MINOR = 0;
+    static VERSION_MINOR = 5;

    private _ev = RxEventHelper.create();

@@ -46,7 +47,7 @@ class MolStarProteopediaWrapper {
        customColorList?: number[]
    }) {
        this.plugin = createPlugin(typeof target === 'string' ? document.getElementById(target)! : target, {
-            ...DefaultPluginSpec,
+            ...DefaultPluginSpec(),
            animations: [
                AnimateModelIndex
            ],
@@ -73,8 +74,8 @@ class MolStarProteopediaWrapper {
        return this.plugin.state.data;
    }

-    private download(b: StateBuilder.To<PSO.Root>, url: string) {
-        return b.apply(StateTransforms.Data.Download, { url, isBinary: false })
+    private download(b: StateBuilder.To<PSO.Root>, url: string, isBinary: boolean) {
+        return b.apply(StateTransforms.Data.Download, { url: Asset.Url(url), isBinary });
    }

    private model(b: StateBuilder.To<PSO.Data.Binary | PSO.Data.String>, format: SupportedFormats) {
@@ -89,11 +90,14 @@ class MolStarProteopediaWrapper {
    private structure(assemblyId: string) {
        const model = this.state.build().to(StateElements.Model);
        const props = {
-            type: {
+            type: assemblyId ? {
                name: 'assembly' as const,
-                params: { id: assemblyId || 'deposited' }
+                params: { id: assemblyId }
+            } : {
+                name: 'model' as const,
+                params: { }
            }
-        }
+        };

        const s = model
            .apply(StateTransforms.Model.StructureFromModel, props, { ref: StateElements.Assembly });
@@ -185,7 +189,7 @@ class MolStarProteopediaWrapper {
        const model = this.getObj<PluginStateObject.Molecule.Model>('model');
        if (!model) return;

-        const info = await ModelInfo.get(this.plugin, model, checkPreferredAssembly)
+        const info = await ModelInfo.get(this.plugin, model, checkPreferredAssembly);
        this.events.modelInfo.next(info);
        return info;
    }
@@ -194,8 +198,9 @@ class MolStarProteopediaWrapper {
        return PluginCommands.State.Update(this.plugin, { state: this.plugin.state.data, tree });
    }

-    private loadedParams: LoadParams = { url: '', format: 'cif', assemblyId: '' };
-    async load({ url, format = 'cif', assemblyId = 'deposited', representationStyle }: LoadParams) {
+    private emptyLoadedParams: LoadParams = { url: '', format: 'cif', isBinary: false, assemblyId: '' };
+    private loadedParams: LoadParams = { url: '', format: 'cif', isBinary: false, assemblyId: '' };
+    async load({ url, format = 'cif', assemblyId = '', isBinary = false, representationStyle }: LoadParams) {
        let loadType: 'full' | 'update' = 'full';

        const state = this.plugin.state.data;
@@ -208,7 +213,7 @@ class MolStarProteopediaWrapper {

        if (loadType === 'full') {
            await PluginCommands.State.RemoveObject(this.plugin, { state, ref: state.tree.root.ref });
-            const modelTree = this.model(this.download(state.build().toRoot(), url), format);
+            const modelTree = this.model(this.download(state.build().toRoot(), url, isBinary), format);
            await this.applyState(modelTree);
            const info = await this.doInfo(true);
            const asmId = (assemblyId === 'preferred' && info && info.preferredAssemblyId) || assemblyId;
@@ -219,11 +224,14 @@ class MolStarProteopediaWrapper {
            const info = await this.doInfo(true);
            const asmId = (assemblyId === 'preferred' && info && info.preferredAssemblyId) || assemblyId;
            const props = {
-                type: {
+                type: assemblyId ? {
                    name: 'assembly' as const,
-                    params: { id: asmId || 'deposited' }
+                    params: { id: asmId }
+                } : {
+                    name: 'model' as const,
+                    params: { }
                }
-            }
+            };
            tree.to(StateElements.Assembly).update(StateTransforms.Model.StructureFromModel, p => ({ ...p, ...props }));
            await this.applyState(tree);
        }
@@ -231,7 +239,6 @@ class MolStarProteopediaWrapper {
        await this.updateStyle(representationStyle);

        this.loadedParams = { url, format, assemblyId };
-        Scheduler.setImmediate(() => PluginCommands.Camera.Reset(this.plugin, { }));
    }

    async updateStyle(style?: RepresentationStyle, partial?: boolean) {
@@ -249,9 +256,7 @@ class MolStarProteopediaWrapper {
    toggleSpin() {
        if (!this.plugin.canvas3d) return;
        const trackball = this.plugin.canvas3d.props.trackball;
-        const spinning = trackball.spin;
        PluginCommands.Canvas3D.SetSettings(this.plugin, { settings: { trackball: { ...trackball, spin: !trackball.spin } } });
-        if (!spinning) PluginCommands.Camera.Reset(this.plugin, { });
    }

    viewport = {
@@ -264,36 +269,21 @@ class MolStarProteopediaWrapper {

    camera = {
        toggleSpin: () => this.toggleSpin(),
-        resetPosition: () => PluginCommands.Camera.Reset(this.plugin, { }),
-        // setClip: (options?: { distance?: number, near?: number, far?: number }) => {
-        //     if (!options) {
-        //         PluginCommands.Canvas3D.SetSettings(this.plugin, {
-        //             settings: {
-        //                 cameraClipDistance: DefaultCanvas3DParams.cameraClipDistance,
-        //                 clip: DefaultCanvas3DParams.clip
-        //             }
-        //         });
-        //         return;
-        //     }
+        resetPosition: () => PluginCommands.Camera.Reset(this.plugin, { })
+    }

-        //     options = options || { };
-        //     const props = this.plugin.canvas3d.props;
-        //     const clipNear = typeof options.near === 'undefined' ? props.clip[0] : options.near;
-        //     const clipFar = typeof options.far === 'undefined' ? props.clip[1] : options.far;
-        //     PluginCommands.Canvas3D.SetSettings(this.plugin, {
-        //         settings: { cameraClipDistance: options.distance, clip: [clipNear, clipFar] }
-        //     });
-        // }
+    private animateModelIndexTargetFps() {
+        return Math.max(1, this.animate.modelIndex.targetFps | 0);
    }

    animate = {
        modelIndex: {
-            maxFPS: 8,
-            onceForward: () => { this.plugin.state.animation.play(AnimateModelIndex, { maxFPS: Math.max(0.5, this.animate.modelIndex.maxFPS | 0), mode: { name: 'once', params: { direction: 'forward' } } }) },
-            onceBackward: () => { this.plugin.state.animation.play(AnimateModelIndex, { maxFPS: Math.max(0.5, this.animate.modelIndex.maxFPS | 0), mode: { name: 'once', params: { direction: 'backward' } } }) },
-            palindrome: () => { this.plugin.state.animation.play(AnimateModelIndex, { maxFPS: Math.max(0.5, this.animate.modelIndex.maxFPS | 0), mode: { name: 'palindrome', params: {} } }) },
-            loop: () => { this.plugin.state.animation.play(AnimateModelIndex, { maxFPS: Math.max(0.5, this.animate.modelIndex.maxFPS | 0), mode: { name: 'loop', params: {} } }) },
-            stop: () => this.plugin.state.animation.stop()
+            targetFps: 8,
+            onceForward: () => { this.plugin.managers.animation.play(AnimateModelIndex, { duration: { name: 'computed', params: { targetFps: this.animateModelIndexTargetFps() } }, mode: { name: 'once', params: { direction: 'forward' } } }); },
+            onceBackward: () => { this.plugin.managers.animation.play(AnimateModelIndex, { duration: { name: 'computed', params: { targetFps: this.animateModelIndexTargetFps() } }, mode: { name: 'once', params: { direction: 'backward' } } }); },
+            palindrome: () => { this.plugin.managers.animation.play(AnimateModelIndex, { duration: { name: 'computed', params: { targetFps: this.animateModelIndexTargetFps() } }, mode: { name: 'palindrome', params: {} } }); },
+            loop: () => { this.plugin.managers.animation.play(AnimateModelIndex, { duration: { name: 'computed', params: { targetFps: this.animateModelIndexTargetFps() } }, mode: { name: 'loop', params: {} } }); },
+            stop: () => this.plugin.managers.animation.stop()
        }
    }

@@ -304,11 +294,6 @@ class MolStarProteopediaWrapper {
            }

            const state = this.state;
-
-            // const visuals = state.selectQ(q => q.ofType(PluginStateObject.Molecule.Structure.Representation3D).filter(c => c.transform.transformer === StateTransforms.Representation.StructureRepresentation3D));
-            // for (const v of visuals) {
-            // }
-
            const tree = state.build();
            const colorTheme = { name: EvolutionaryConservation.propertyProvider.descriptor.name, params: this.plugin.representation.structure.themes.colorThemeRegistry.get(EvolutionaryConservation.propertyProvider.descriptor.name).defaultValues };

@@ -353,12 +338,10 @@ class MolStarProteopediaWrapper {
            PluginCommands.State.Update(this.plugin, { state: this.state, tree: update });
            PluginCommands.Camera.Reset(this.plugin, { });
        },
-        focusFirst: async (compId: string) => {
+        focusFirst: async (compId: string, options?: { hideLabels: boolean, doNotLabelWaters: boolean }) => {
            if (!this.state.transforms.has(StateElements.Assembly)) return;
            await PluginCommands.Camera.Reset(this.plugin, { });

-            // const asm = (this.state.select(StateElements.Assembly)[0].obj as PluginStateObject.Molecule.Structure).data;
-
            const update = this.state.build();

            update.delete(StateElements.HetGroupFocusGroup);
@@ -372,69 +355,66 @@ class MolStarProteopediaWrapper {
            const surroundings = MS.struct.modifier.includeSurroundings({ 0: core, radius: 5, 'as-whole-residues': true });

            const group = update.to(StateElements.Assembly).group(StateTransforms.Misc.CreateGroup, { label: compId }, { ref: StateElements.HetGroupFocusGroup });
+            const asm = this.state.select(StateElements.Assembly)[0].obj as PluginStateObject.Molecule.Structure;
+            const coreSel = group.apply(StateTransforms.Model.StructureSelectionFromExpression, { label: 'Core', expression: core }, { ref: StateElements.HetGroupFocus });
+
+
+            coreSel.apply(StateTransforms.Representation.StructureRepresentation3D, createStructureRepresentationParams(this.plugin, asm.data, {
+                type: 'ball-and-stick'
+            }));
+            coreSel.apply(StateTransforms.Representation.StructureRepresentation3D, createStructureRepresentationParams(this.plugin, asm.data, {
+                type: 'label',
+                typeParams: { level: 'element' }
+            }), { tags: ['proteopedia-labels'] });

-            group.apply(StateTransforms.Model.StructureSelectionFromExpression, { label: 'Core', expression: core }, { ref: StateElements.HetGroupFocus })
-                .apply(StateTransforms.Representation.StructureRepresentation3D, this.createCoreVisualParams());
            group.apply(StateTransforms.Model.StructureSelectionFromExpression, { label: 'Surroundings', expression: surroundings })
-                .apply(StateTransforms.Representation.StructureRepresentation3D, this.createSurVisualParams());
-            // sel.apply(StateTransforms.Representation.StructureLabels3D, {
-            //     target: { name: 'residues', params: { } },
-            //     options: {
-            //         ...ParamDefinition.getDefaultValues(Text.Params),
-            //         background: true,
-            //         backgroundMargin: 0.2,
-            //         backgroundColor: ColorNames.snow,
-            //         backgroundOpacity: 0.9,
-            //     }
-            // });
+                .apply(StateTransforms.Representation.StructureRepresentation3D, createStructureRepresentationParams(this.plugin, asm.data, {
+                    type: 'ball-and-stick',
+                    color: 'uniform', colorParams: { value: ColorNames.gray },
+                    size: 'uniform', sizeParams: { value: 0.33 }
+                }));
+
+            if (!options?.hideLabels) {
+                // Labels
+                const waters = MS.struct.generator.atomGroups({
+                    'entity-test': MS.core.rel.eq([MS.struct.atomProperty.macromolecular.entityType(), 'water']),
+                });
+                const exclude = options?.doNotLabelWaters ? MS.struct.combinator.merge([core, waters]) : core;
+                const onlySurroundings = MS.struct.modifier.exceptBy({ 0: surroundings, by: exclude });
+
+                group.apply(StateTransforms.Model.StructureSelectionFromExpression, { label: 'Surroundings (only)', expression: onlySurroundings })
+                    .apply(StateTransforms.Representation.StructureRepresentation3D, createStructureRepresentationParams(this.plugin, asm.data, {
+                        type: 'label',
+                        typeParams: { level: 'residue' }
+                    }), { tags: ['proteopedia-labels'] }); // the tag can later be used to toggle the labels
+            }

            await PluginCommands.State.Update(this.plugin, { state: this.state, tree: update });

            const focus = (this.state.select(StateElements.HetGroupFocus)[0].obj as PluginStateObject.Molecule.Structure).data;
            const sphere = focus.boundary.sphere;
-            // const asmCenter = asm.boundary.sphere.center;
-            // const position = Vec3.sub(Vec3.zero(), sphere.center, asmCenter);
-            // Vec3.normalize(position, position);
-            // Vec3.scaleAndAdd(position, sphere.center, position, sphere.radius);
-            const radius = Math.max(sphere.radius, 5)
+            const radius = Math.max(sphere.radius, 5);
            const snapshot = this.plugin.canvas3d!.camera.getFocus(sphere.center, radius);
            PluginCommands.Camera.SetSnapshot(this.plugin, { snapshot, durationMs: 250 });
        }
    }

-    private createSurVisualParams() {
-        const asm = this.state.select(StateElements.Assembly)[0].obj as PluginStateObject.Molecule.Structure;
-        return createStructureRepresentationParams(this.plugin, asm.data, {
-            type: 'ball-and-stick',
-            color: 'uniform', colorParams: { value: ColorNames.gray },
-            size: 'uniform', sizeParams: { value: 0.33 }
-        });
-    }
-
-    private createCoreVisualParams() {
-        const asm = this.state.select(StateElements.Assembly)[0].obj as PluginStateObject.Molecule.Structure;
-        return createStructureRepresentationParams(this.plugin, asm.data, {
-            type: 'ball-and-stick'
-        });
-    }
-
    snapshot = {
-        get: () => {
-            return this.plugin.state.getSnapshot();
+        get: (params?: PluginState.SnapshotParams) => {
+            return this.plugin.state.getSnapshot(params);
        },
        set: (snapshot: PluginState.Snapshot) => {
            return this.plugin.state.setSnapshot(snapshot);
        },
-        download: () => {
-            const json = JSON.stringify(this.plugin.state.getSnapshot(), null, 2);
-            const blob = new Blob([json], {type : 'application/json;charset=utf-8'});
-            download(blob, `mol-star_state_${(name || getFormattedTime())}.json`)
+        download: async (type: 'molj' | 'molx' = 'molj', params?: PluginState.SnapshotParams) => {
+            const data = await this.plugin.managers.snapshot.serialize({ type, params });
+            download(data, `mol-star_state_${getFormattedTime()}.${type}`);
        },
-        fetch: async (url: string) => {
+        fetch: async (url: string, type: 'molj' | 'molx' = 'molj') => {
            try {
-                const snapshot = await this.plugin.runTask(this.plugin.fetch({ url, type: 'json' }));
-                // TODO: is this OK to test for snapshots from server?
-                await this.plugin.state.setSnapshot(snapshot?.data?.entries?.[0]?.snapshot || snapshot);
+                const data = await this.plugin.runTask(this.plugin.fetch({ url, type: 'binary' }));
+                this.loadedParams = { ...this.emptyLoadedParams };
+                return await this.plugin.managers.snapshot.open(new File([data], `state.${type}`));
            } catch (e) {
                console.log(e);
            }
--- a/src/examples/proteopedia-wrapper/ui/controls.tsx
+++ b/src/examples/proteopedia-wrapper/ui/controls.tsx
@@ -13,7 +13,6 @@ import { StateElements } from '../helpers';

 export function volumeStreamingControls(plugin: PluginContext, parent: Element) {
    ReactDOM.render(<PluginContextContainer plugin={plugin}>
-            <TransformUpdaterControl nodeRef={StateElements.VolumeStreaming} />
-        </PluginContextContainer>,
-        parent);
+        <TransformUpdaterControl nodeRef={StateElements.VolumeStreaming} />
+    </PluginContextContainer>, parent);
 }
--- a/src/examples/task.ts
+++ b/src/examples/task.ts
@@ -4,7 +4,7 @@
 * @author David Sehnal <david.sehnal@gmail.com>
 */

-import { Task, Progress, Scheduler, MultistepTask, chunkedSubtask } from '../mol-task'
+import { Task, Progress, Scheduler, MultistepTask, chunkedSubtask } from '../mol-task';
 import { now } from '../mol-util/now';

 export async function test1() {
@@ -85,19 +85,19 @@ export const ms = MultistepTask('ms-task', ['step 1', 'step 2', 'step 3'], async
    await step(0);

    const child = Task.create('chunked', async ctx => {
-        const s = await chunkedSubtask(ctx, 25, { i: 0, current: 0, total: 125 }, processChunk, (ctx, s, p) => ctx.update('chunk test ' + p))
+        const s = await chunkedSubtask(ctx, 25, { i: 0, current: 0, total: 125 }, processChunk, (ctx, s, p) => ctx.update('chunk test ' + p));
        return s.i;
    });

    await child.runAsChild(ctx);
    await Scheduler.delay(250);
    await step(1);
-    await chunkedSubtask(ctx, 25, { i: 0, current: 0, total: 80 }, processChunk, (ctx, s, p) => ctx.update('chunk test ' + p))
+    await chunkedSubtask(ctx, 25, { i: 0, current: 0, total: 80 }, processChunk, (ctx, s, p) => ctx.update('chunk test ' + p));
    await Scheduler.delay(250);
    await step(2);
    await Scheduler.delay(250);
    return p.i + 3;
-})
+});


 export function abortingObserver(p: Progress) {
--- a/src/extensions/alpha-orbitals/_spec/collocation.spec.ts
+++ b/src/extensions/alpha-orbitals/_spec/collocation.spec.ts
@@ -0,0 +1,214 @@
+/**
+ * Copyright (c) 2020 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * @author David Sehnal <david.sehnal@gmail.com>
+ */
+
+import { Box3D } from '../../../mol-math/geometry';
+import { Vec3 } from '../../../mol-math/linear-algebra';
+import { RuntimeContext } from '../../../mol-task';
+import { sphericalCollocation } from '../collocation';
+import { Basis, CubeGridInfo } from '../data-model';
+
+describe('alpha-orbitals-cubes', () => {
+    it('water', async () => {
+        const grid: CubeGridInfo = {
+            params: {
+                basis: _testBasis,
+                cutoffThreshold: 0,
+                sphericalOrder: 'cca-reverse',
+                boxExpand: 0,
+                gridSpacing: []
+            },
+            box: Box3D.create(Vec3.create(-1, -1, -1), Vec3.create(1, 1, 1)),
+            delta: Vec3.create(2, 2, 2),
+            dimensions: Vec3.create(2, 2, 2),
+            npoints: 8,
+            size: Vec3.create(2, 2, 2)
+        };
+
+        const matrix = await sphericalCollocation(grid, {
+            energy: 0,
+            occupancy: 0,
+            alpha: [-2.2623991420609075e-16, 0.6360205395000592, 0.6672122399886391, -0.3876927909355508, -1.6780131293332933e-16, 2.844782862661151e-16, 4.977960694176068e-19, -2.3945919908996803e-16]
+        }, RuntimeContext.Synchronous);
+
+        const expected = [-0.1451730622877498, 0.06479453956039086, -0.2777738736440713, -0.057116584776260436, 0.05929916178822645, 0.2742903371231049, -0.07221698722165386, 0.15389180241391376];
+
+        expect(matrix.length).toBe(expected.length);
+
+        for (let i = 0; i < matrix.length; i++) {
+            expect(Math.abs(matrix[i] - expected[i]) < 1e-6).toBe(true);
+        }
+    });
+});
+
+const _testBasis: Basis = {
+    'atoms': [
+        {
+            'center': [
+                0.025886090588624934,
+                0.019164790004065606,
+                -0.013539970104105408
+            ] as Vec3,
+            'shells': [
+                {
+                    'angularMomentum': [0],
+                    'coefficients': [
+                        [
+                            -0.004151277818987536,
+                            -0.02067024147993795,
+                            -0.05150303336984537,
+                            0.33462711739899537,
+                            0.5621061300983125,
+                            0.17129946969948573
+                        ]
+                    ],
+                    'exponents': [
+                        152.28769660788095,
+                        27.928015215973073,
+                        7.848374792384515,
+                        1.1223350202705642,
+                        0.5093846587907856,
+                        0.24292266532510307
+                    ]
+                },
+                {
+                    'angularMomentum': [1],
+                    'coefficients': [
+                        [
+                            0.007924233646294425,
+                            0.051441048251911314,
+                            0.18984000600705359,
+                            0.4049863191150474,
+                            0.40123628611490797,
+                            0.1051855189039082
+                        ]
+                    ],
+                    'exponents': [
+                        27.203421487167727,
+                        7.09409912597673,
+                        2.5383362605345954,
+                        1.0610730767843852,
+                        0.4851948916410433,
+                        0.22938302550642545
+                    ]
+                }
+            ]
+        },
+        {
+            'center': [
+                0.5082729578468134,
+                1.6880351220025265,
+                0.4963443067810461
+            ] as Vec3,
+            'shells': [
+                {
+                    'angularMomentum': [0],
+                    'coefficients': [
+                        [
+                            0.009163596280542963,
+                            0.04936149294292479,
+                            0.16853830490998634,
+                            0.37056279972195677,
+                            0.4164915298246781,
+                            0.13033408410772263
+                        ]
+                    ],
+                    'exponents': [
+                        33.710073211949485,
+                        6.180705022740464,
+                        1.7291385346152253,
+                        0.5940057549921978,
+                        0.2306698170449518,
+                        0.09500256906284119
+                    ]
+                },
+                {
+                    'angularMomentum': [0],
+                    'coefficients': [
+                        [
+                            -0.32279868167000036,
+                            3.209629817295221,
+                            2.4672629224617935,
+                            -0.048487066612842224,
+                            -0.2611850111200143,
+                            -0.8917817597810863,
+                            -1.9607480081275706,
+                            -2.203769342520311,
+                            -0.6896328935259993
+                        ]
+                    ],
+                    'exponents': [
+                        10.256286070314905,
+                        0.6227965325875392,
+                        0.2391007667853915,
+                        33.710073211949485,
+                        6.180705022740464,
+                        1.7291385346152253,
+                        0.5940057549921978,
+                        0.2306698170449518,
+                        0.09500256906284119
+                    ]
+                }
+            ]
+        },
+        {
+            'center': [
+                1.1367367844436005,
+                -0.47018519422670163,
+                -1.356802622574504
+            ] as Vec3,
+            'shells': [
+                {
+                    'angularMomentum': [0],
+                    'coefficients': [
+                        [
+                            0.009163596280542963,
+                            0.04936149294292479,
+                            0.16853830490998634,
+                            0.37056279972195677,
+                            0.4164915298246781,
+                            0.13033408410772263
+                        ]
+                    ],
+                    'exponents': [
+                        33.710073211949485,
+                        6.180705022740464,
+                        1.7291385346152253,
+                        0.5940057549921978,
+                        0.2306698170449518,
+                        0.09500256906284119
+                    ]
+                },
+                {
+                    'angularMomentum': [0],
+                    'coefficients': [
+                        [
+                            -0.32279868167000036,
+                            3.209629817295221,
+                            2.4672629224617935,
+                            -0.048487066612842224,
+                            -0.2611850111200143,
+                            -0.8917817597810863,
+                            -1.9607480081275706,
+                            -2.203769342520311,
+                            -0.6896328935259993
+                        ]
+                    ],
+                    'exponents': [
+                        10.256286070314905,
+                        0.6227965325875392,
+                        0.2391007667853915,
+                        33.710073211949485,
+                        6.180705022740464,
+                        1.7291385346152253,
+                        0.5940057549921978,
+                        0.2306698170449518,
+                        0.09500256906284119
+                    ]
+                }
+            ]
+        }
+    ]
+};
--- a/src/extensions/alpha-orbitals/collocation.ts
+++ b/src/extensions/alpha-orbitals/collocation.ts
@@ -0,0 +1,162 @@
+/**
+ * Copyright (c) 2020 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * Inspired by https://github.com/dgasmith/gau2grid.
+ *
+ * @author David Sehnal <david.sehnal@gmail.com>
+ */
+
+import { Vec3 } from '../../mol-math/linear-algebra';
+import { RuntimeContext } from '../../mol-task';
+import { arrayMin } from '../../mol-util/array';
+import { AlphaOrbital, CubeGridInfo } from './data-model';
+import { normalizeBasicOrder, SphericalFunctions } from './spherical-functions';
+
+export async function sphericalCollocation(
+    grid: CubeGridInfo,
+    orbital: AlphaOrbital,
+    taskCtx: RuntimeContext
+) {
+    const { basis, sphericalOrder, cutoffThreshold } = grid.params;
+    let baseCount = 0;
+
+    for (const atom of basis.atoms) {
+        for (const shell of atom.shells) {
+            for (const L of shell.angularMomentum) {
+                if (L > 4) {
+                    // TODO: will L > 4 be required? Would need to precompute more functions in that case.
+                    throw new Error('Angular momentum L > 4 not supported.');
+                }
+
+                baseCount += 2 * L + 1;
+            }
+        }
+    }
+
+    const matrix = new Float32Array(grid.npoints);
+
+    let baseIndex = 0;
+    for (const atom of basis.atoms) {
+        for (const shell of atom.shells) {
+            let amIndex = 0;
+            for (const L of shell.angularMomentum) {
+                const alpha = normalizeBasicOrder(
+                    L,
+                    orbital.alpha.slice(baseIndex, baseIndex + 2 * L + 1),
+                    sphericalOrder
+                );
+                baseIndex += 2 * L + 1;
+
+                collocationBasis(
+                    matrix,
+                    grid,
+                    L,
+                    shell.coefficients[amIndex++],
+                    shell.exponents,
+                    atom.center,
+                    cutoffThreshold,
+                    alpha
+                );
+
+                if (taskCtx.shouldUpdate) {
+                    await taskCtx.update({
+                        message: 'Computing...',
+                        current: baseIndex,
+                        max: baseCount,
+                        isIndeterminate: false,
+                    });
+                }
+            }
+        }
+    }
+
+    return matrix;
+}
+
+function collocationBasis(
+    matrix: Float32Array,
+    grid: CubeGridInfo,
+    L: number,
+    coefficients: number[],
+    exponents: number[],
+    center: Vec3,
+    cutoffThreshold: number,
+    alpha: number[]
+) {
+    const ncoeff = exponents.length;
+    const sphericalFunc = SphericalFunctions[L];
+
+    const cx = center[0],
+        cy = center[1],
+        cz = center[2];
+    const ny = grid.dimensions[1],
+        nz = grid.dimensions[2];
+    const gdx = grid.delta[0],
+        gdy = grid.delta[1],
+        gdz = grid.delta[2];
+    const sx = grid.box.min[0],
+        sy = grid.box.min[1],
+        sz = grid.box.min[2];
+
+    const cutoffRadius =
+        cutoffThreshold > 0
+            ? Math.sqrt(-Math.log(cutoffThreshold) / arrayMin(exponents))
+            : 10000;
+    const cutoffSquared = cutoffRadius * cutoffRadius;
+
+    const radiusBox = getRadiusBox(grid, center, cutoffRadius);
+    const iMin = radiusBox[0][0],
+        jMin = radiusBox[0][1],
+        kMin = radiusBox[0][2];
+    const iMax = radiusBox[1][0],
+        jMax = radiusBox[1][1],
+        kMax = radiusBox[1][2];
+
+    for (let i = iMin; i <= iMax; i++) {
+        const x = sx + gdx * i - cx;
+        const oX = i * ny * nz;
+
+        for (let j = jMin; j <= jMax; j++) {
+            const y = sy + gdy * j - cy;
+            const oY = oX + j * nz;
+            for (let k = kMin; k <= kMax; k++) {
+                const z = sz + gdz * k - cz;
+                const R2 = x * x + y * y + z * z;
+
+                if (R2 > cutoffSquared) {
+                    continue;
+                }
+
+                let gaussianSum = 0;
+                for (let c = 0; c < ncoeff; c++) {
+                    gaussianSum +=
+                        coefficients[c] * Math.exp(-exponents[c] * R2);
+                }
+
+                const sphericalSum = L === 0 ? alpha[0] : sphericalFunc(alpha, x, y, z);
+
+
+                matrix[k + oY] += gaussianSum * sphericalSum;
+            }
+        }
+    }
+}
+
+function getRadiusBox(grid: CubeGridInfo, center: Vec3, radius: number) {
+    const r = Vec3.create(radius, radius, radius);
+    const min = Vec3.scaleAndAdd(Vec3(), center, r, -1);
+    const max = Vec3.add(Vec3(), center, r);
+
+    Vec3.sub(min, min, grid.box.min);
+    Vec3.sub(max, max, grid.box.min);
+
+    Vec3.div(min, min, grid.delta);
+    Vec3.floor(min, min);
+    Vec3.max(min, min, Vec3());
+
+    Vec3.div(max, max, grid.delta);
+    Vec3.ceil(max, max);
+    Vec3.min(max, max, Vec3.subScalar(Vec3(), grid.dimensions, 1));
+
+    return [min, max];
+}
--- a/src/extensions/alpha-orbitals/data-model.ts
+++ b/src/extensions/alpha-orbitals/data-model.ts
@@ -0,0 +1,131 @@
+/**
+ * Copyright (c) 2020 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * @author David Sehnal <david.sehnal@gmail.com>
+ */
+
+import { Mat4, Tensor, Vec3 } from '../../mol-math/linear-algebra';
+import { Grid } from '../../mol-model/volume';
+import { SphericalBasisOrder } from './spherical-functions';
+import { Box3D, RegularGrid3d } from '../../mol-math/geometry';
+import { arrayMin, arrayMax, arrayRms, arrayMean } from '../../mol-util/array';
+
+// Note: generally contracted gaussians are currently not supported.
+export interface SphericalElectronShell {
+    exponents: number[];
+    angularMomentum: number[];
+    // number[] for each angular momentum
+    coefficients: number[][];
+}
+
+export interface Basis {
+    atoms: {
+        // in Bohr units!
+        center: Vec3;
+        shells: SphericalElectronShell[];
+    }[];
+}
+
+export interface AlphaOrbital {
+    energy: number;
+    occupancy: number;
+    alpha: number[];
+}
+
+export interface CubeGridComputationParams {
+    basis: Basis;
+    /**
+     * for each electron shell compute a cutoff radius as
+     *    const cutoffRadius = Math.sqrt(-Math.log(cutoffThreshold) / arrayMin(exponents));
+     */
+    cutoffThreshold: number;
+    sphericalOrder: SphericalBasisOrder;
+    boxExpand: number;
+    gridSpacing: number | [atomCountThreshold: number, spacing: number][];
+    doNotComputeIsovalues?: boolean;
+}
+
+export interface CubeGridInfo {
+    params: CubeGridComputationParams;
+    dimensions: Vec3;
+    box: Box3D;
+    size: Vec3;
+    npoints: number;
+    delta: Vec3;
+}
+
+export interface CubeGrid {
+    grid: Grid;
+    isovalues?: { negative?: number; positive?: number };
+}
+
+export function initCubeGrid(params: CubeGridComputationParams): CubeGridInfo {
+    const geometry = params.basis.atoms.map(a => a.center);
+    const { gridSpacing: spacing, boxExpand: expand } = params;
+
+    const count = geometry.length;
+    const box = Box3D.expand(
+        Box3D(),
+        Box3D.fromVec3Array(Box3D(), geometry),
+        Vec3.create(expand, expand, expand)
+    );
+    const size = Box3D.size(Vec3(), box);
+
+    const spacingThresholds =
+        typeof spacing === 'number' ? [[0, spacing]] : [...spacing];
+    spacingThresholds.sort((a, b) => b[0] - a[0]);
+
+    let s = 0.4;
+    for (let i = 0; i <= spacingThresholds.length; i++) {
+        s = spacingThresholds[i][1];
+        if (spacingThresholds[i][0] <= count) break;
+    }
+
+    const dimensions = Vec3.ceil(Vec3(), Vec3.scale(Vec3(), size, 1 / s));
+
+    return {
+        params,
+        box,
+        dimensions,
+        size,
+        npoints: dimensions[0] * dimensions[1] * dimensions[2],
+        delta: Vec3.div(Vec3(), size, Vec3.subScalar(Vec3(), dimensions, 1)),
+    };
+}
+
+const BohrToAngstromFactor = 0.529177210859;
+
+export function createGrid(gridInfo: RegularGrid3d, values: Float32Array, axisOrder: number[]) {
+    const boxSize = Box3D.size(Vec3(), gridInfo.box);
+    const boxOrigin = Vec3.clone(gridInfo.box.min);
+
+    Vec3.scale(boxSize, boxSize, BohrToAngstromFactor);
+    Vec3.scale(boxOrigin, boxOrigin, BohrToAngstromFactor);
+
+    const scale = Mat4.fromScaling(
+        Mat4(),
+        Vec3.div(
+            Vec3(),
+            boxSize,
+            Vec3.sub(Vec3(), gridInfo.dimensions, Vec3.create(1, 1, 1))
+        )
+    );
+    const translate = Mat4.fromTranslation(Mat4(), boxOrigin);
+    const matrix = Mat4.mul(Mat4(), translate, scale);
+
+    const grid: Grid = {
+        transform: { kind: 'matrix', matrix },
+        cells: Tensor.create(
+            Tensor.Space(gridInfo.dimensions, axisOrder, Float32Array),
+            (values as any) as Tensor.Data
+        ),
+        stats: {
+            min: arrayMin(values),
+            max: arrayMax(values),
+            mean: arrayMean(values),
+            sigma: arrayRms(values),
+        },
+    };
+
+    return grid;
+}
--- a/src/extensions/alpha-orbitals/density.ts
+++ b/src/extensions/alpha-orbitals/density.ts
@@ -0,0 +1,124 @@
+/**
+ * Copyright (c) 2020 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * @author David Sehnal <david.sehnal@gmail.com>
+ */
+
+import { sortArray } from '../../mol-data/util';
+import { canComputeGrid3dOnGPU } from '../../mol-gl/compute/grid3d';
+import { WebGLContext } from '../../mol-gl/webgl/context';
+import { Task } from '../../mol-task';
+import { AlphaOrbital, createGrid, CubeGrid, CubeGridComputationParams, initCubeGrid } from './data-model';
+import { gpuComputeAlphaOrbitalsDensityGridValues } from './gpu/compute';
+
+export function createSphericalCollocationDensityGrid(
+    params: CubeGridComputationParams, orbitals: AlphaOrbital[], webgl?: WebGLContext
+): Task<CubeGrid> {
+    return Task.create('Spherical Collocation Grid', async (ctx) => {
+        const cubeGrid = initCubeGrid(params);
+
+        let matrix: Float32Array;
+        if (canComputeGrid3dOnGPU(webgl)) {
+            // console.time('gpu');
+            matrix = await gpuComputeAlphaOrbitalsDensityGridValues(ctx, webgl!, cubeGrid, orbitals);
+            // console.timeEnd('gpu');
+        } else {
+            throw new Error('Missing OES_texture_float WebGL extension.');
+        }
+
+        const grid = createGrid(cubeGrid, matrix, [0, 1, 2]);
+        let isovalues: { negative?: number, positive?: number } | undefined;
+
+        if (!params.doNotComputeIsovalues) {
+            isovalues = computeDensityIsocontourValues(matrix, 0.85);
+        }
+
+        return { grid, isovalues };
+    });
+}
+
+export function computeDensityIsocontourValues(input: Float32Array, cumulativeThreshold: number) {
+    let weightSum = 0;
+    for (let i = 0, _i = input.length; i < _i; i++) {
+        const v = input[i];
+        const w = Math.abs(v);
+        weightSum += w;
+    }
+    const avgWeight = weightSum / input.length;
+    let minWeight = 3 * avgWeight;
+
+    // do not try to identify isovalues for degenerate data
+    // e.g. all values are almost same
+    if (Math.abs(avgWeight - input[0] * input[0]) < 1e-5) {
+        return { negative: void 0, positive: void 0 };
+    }
+
+    let size = 0;
+    while (true) {
+        let csum = 0;
+        size = 0;
+        for (let i = 0, _i = input.length; i < _i; i++) {
+            const v = input[i];
+            const w = Math.abs(v);
+            if (w >= minWeight) {
+                csum += w;
+                size++;
+            }
+        }
+
+        if (csum / weightSum > cumulativeThreshold) {
+            break;
+        }
+
+        minWeight -= avgWeight;
+    }
+
+    const values = new Float32Array(size);
+    const weights = new Float32Array(size);
+    const indices = new Int32Array(size);
+
+    let o = 0;
+    for (let i = 0, _i = input.length; i < _i; i++) {
+        const v = input[i];
+        const w = Math.abs(v);
+        if (w >= minWeight) {
+            values[o] = v;
+            weights[o] = w;
+            indices[o] = o;
+            o++;
+        }
+    }
+
+    sortArray(
+        indices,
+        (indices, i, j) => weights[indices[j]] - weights[indices[i]]
+    );
+
+    let cweight = 0,
+        cutoffIndex = 0;
+    for (let i = 0; i < size; i++) {
+        cweight += weights[indices[i]];
+
+        if (cweight / weightSum >= cumulativeThreshold) {
+            cutoffIndex = i;
+            break;
+        }
+    }
+
+    let positive = Number.POSITIVE_INFINITY,
+        negative = Number.NEGATIVE_INFINITY;
+
+    for (let i = 0; i < cutoffIndex; i++) {
+        const v = values[indices[i]];
+        if (v > 0) {
+            if (v < positive) positive = v;
+        } else if (v < 0) {
+            if (v > negative) negative = v;
+        }
+    }
+
+    return {
+        negative: negative !== Number.NEGATIVE_INFINITY ? negative : void 0,
+        positive: positive !== Number.POSITIVE_INFINITY ? positive : void 0,
+    };
+}
--- a/src/extensions/alpha-orbitals/gpu/compute.ts
+++ b/src/extensions/alpha-orbitals/gpu/compute.ts
@@ -0,0 +1,170 @@
+/**
+ * Copyright (c) 2020 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * @author David Sehnal <david.sehnal@gmail.com>
+ */
+
+import { createGrid3dComputeRenderable } from '../../../mol-gl/compute/grid3d';
+import { TextureSpec, UnboxedValues, UniformSpec } from '../../../mol-gl/renderable/schema';
+import { WebGLContext } from '../../../mol-gl/webgl/context';
+import { RuntimeContext } from '../../../mol-task';
+import { ValueCell } from '../../../mol-util';
+import { arrayMin } from '../../../mol-util/array';
+import { AlphaOrbital, Basis, CubeGridInfo } from '../data-model';
+import { normalizeBasicOrder, SphericalBasisOrder } from '../spherical-functions';
+import { MAIN, UTILS } from './shader.frag';
+
+const Schema = {
+    tCenters: TextureSpec('image-float32', 'rgba', 'float', 'nearest'),
+    tInfo: TextureSpec('image-float32', 'rgba', 'float', 'nearest'),
+    tCoeff: TextureSpec('image-float32', 'rgb', 'float', 'nearest'),
+    tAlpha: TextureSpec('image-float32', 'alpha', 'float', 'nearest'),
+    uNCenters: UniformSpec('i'),
+    uNAlpha: UniformSpec('i'),
+    uNCoeff: UniformSpec('i'),
+    uMaxCoeffs: UniformSpec('i'),
+};
+
+const Orbitals = createGrid3dComputeRenderable({
+    schema: Schema,
+    loopBounds: ['uNCenters', 'uMaxCoeffs'],
+    mainCode: MAIN,
+    utilCode: UTILS,
+    returnCode: 'v',
+    values(params: { grid: CubeGridInfo, orbital: AlphaOrbital }) {
+        return createTextureData(params.grid, params.orbital);
+    }
+});
+
+const Density = createGrid3dComputeRenderable({
+    schema: {
+        ...Schema,
+        uOccupancy: UniformSpec('f'),
+    },
+    loopBounds: ['uNCenters', 'uMaxCoeffs'],
+    mainCode: MAIN,
+    utilCode: UTILS,
+    returnCode: 'current + uOccupancy * v * v',
+    values(params: { grid: CubeGridInfo, orbitals: AlphaOrbital[] }) {
+        return {
+            ...createTextureData(params.grid, params.orbitals[0]),
+            uOccupancy: 0
+        };
+    },
+    cumulative: {
+        states(params: { grid: CubeGridInfo, orbitals: AlphaOrbital[] }) {
+            return params.orbitals.filter(o => o.occupancy !== 0);
+        },
+        update({ grid }, state: AlphaOrbital, values) {
+            const alpha = getNormalizedAlpha(grid.params.basis, state.alpha, grid.params.sphericalOrder);
+            ValueCell.updateIfChanged(values.uOccupancy, state.occupancy);
+            ValueCell.update(values.tAlpha, { width: alpha.length, height: 1, array: alpha });
+        }
+    }
+});
+
+export function gpuComputeAlphaOrbitalsGridValues(ctx: RuntimeContext, webgl: WebGLContext, grid: CubeGridInfo, orbital: AlphaOrbital) {
+    return Orbitals(ctx, webgl, grid, { grid, orbital });
+}
+
+export function gpuComputeAlphaOrbitalsDensityGridValues(ctx: RuntimeContext, webgl: WebGLContext, grid: CubeGridInfo, orbitals: AlphaOrbital[]) {
+    return Density(ctx, webgl, grid, { grid, orbitals });
+}
+
+function getNormalizedAlpha(basis: Basis, alphaOrbitals: number[], sphericalOrder: SphericalBasisOrder) {
+    const alpha = new Float32Array(alphaOrbitals.length);
+
+    let aO = 0;
+    for (const atom of basis.atoms) {
+        for (const shell of atom.shells) {
+            for (const L of shell.angularMomentum) {
+                const a0 = normalizeBasicOrder(L, alphaOrbitals.slice(aO, aO + 2 * L + 1), sphericalOrder);
+                for (let i = 0; i < a0.length; i++) alpha[aO + i] = a0[i];
+                aO += 2 * L + 1;
+            }
+        }
+    }
+
+    return alpha;
+}
+
+function createTextureData(grid: CubeGridInfo, orbital: AlphaOrbital): UnboxedValues<typeof Schema> {
+    const { basis, sphericalOrder, cutoffThreshold } = grid.params;
+
+    let centerCount = 0;
+    let baseCount = 0;
+    let coeffCount = 0;
+    for (const atom of basis.atoms) {
+        for (const shell of atom.shells) {
+            for (const L of shell.angularMomentum) {
+                if (L > 4) {
+                    // TODO: will L > 4 be required? Would need to precompute more functions in that case.
+                    throw new Error('Angular momentum L > 4 not supported.');
+                }
+
+                centerCount++;
+                baseCount += 2 * L + 1;
+                coeffCount += shell.exponents.length;
+            }
+        }
+    }
+
+    const centers = new Float32Array(4 * centerCount);
+    // L, alpha_offset, coeff_offset_start, coeff_offset_end
+    const info = new Float32Array(4 * centerCount);
+    const alpha = new Float32Array(baseCount);
+    const coeff = new Float32Array(3 * coeffCount);
+
+    let maxCoeffs = 0;
+    let cO = 0, aO = 0, coeffO = 0;
+    for (const atom of basis.atoms) {
+        for (const shell of atom.shells) {
+
+            let amIndex = 0;
+            for (const L of shell.angularMomentum) {
+                const a0 = normalizeBasicOrder(L, orbital.alpha.slice(aO, aO + 2 * L + 1), sphericalOrder);
+
+                const cutoffRadius = cutoffThreshold > 0
+                    ? Math.sqrt(-Math.log(cutoffThreshold) / arrayMin(shell.exponents))
+                    : 10000;
+
+                centers[4 * cO + 0] = atom.center[0];
+                centers[4 * cO + 1] = atom.center[1];
+                centers[4 * cO + 2] = atom.center[2];
+                centers[4 * cO + 3] = cutoffRadius * cutoffRadius;
+
+                info[4 * cO + 0] = L;
+                info[4 * cO + 1] = aO;
+                info[4 * cO + 2] = coeffO;
+                info[4 * cO + 3] = coeffO + shell.exponents.length;
+
+                for (let i = 0; i < a0.length; i++) alpha[aO + i] = a0[i];
+
+                const c0 = shell.coefficients[amIndex++];
+                for (let i = 0; i < shell.exponents.length; i++) {
+                    coeff[3 * (coeffO + i) + 0] = c0[i];
+                    coeff[3 * (coeffO + i) + 1] = shell.exponents[i];
+                }
+
+                if (c0.length > maxCoeffs) {
+                    maxCoeffs = c0.length;
+                }
+
+                cO++;
+                aO += 2 * L + 1;
+                coeffO += shell.exponents.length;
+            }
+        }
+    }
+
+    return {
+        uNCenters: centerCount,
+        uNAlpha: baseCount,
+        uNCoeff: coeffCount,
+        uMaxCoeffs: maxCoeffs,
+        tCenters: { width: centerCount, height: 1, array: centers },
+        tInfo: { width: centerCount, height: 1, array: info },
+        tCoeff: { width: coeffCount, height: 1, array: coeff },
+        tAlpha: { width: baseCount, height: 1, array: alpha },
+    };
+}
--- a/src/extensions/alpha-orbitals/gpu/shader.frag.ts
+++ b/src/extensions/alpha-orbitals/gpu/shader.frag.ts
@@ -0,0 +1,145 @@
+/**
+ * Copyright (c) 2020 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * @author David Sehnal <david.sehnal@gmail.com>
+ */
+
+export const UTILS = `
+float L1(vec3 p, float a0, float a1, float a2) {
+    return a0 * p.z + a1 * p.x + a2 * p.y;
+}
+
+float L2(vec3 p, float a0, float a1, float a2, float a3, float a4) {
+    float x = p.x, y = p.y, z = p.z;
+    float xx = x * x, yy = y * y, zz = z * z;
+    return (
+        a0 * (-0.5 * xx - 0.5 * yy + zz) +
+        a1 * (1.7320508075688772 * x * z) +
+        a2 * (1.7320508075688772 * y * z) +
+        a3 * (0.8660254037844386 * xx - 0.8660254037844386 * yy) +
+        a4 * (1.7320508075688772 * x * y)
+    );
+}
+
+float L3(vec3 p, float a0, float a1, float a2, float a3, float a4, float a5, float a6) {
+    float x = p.x, y = p.y, z = p.z;
+    float xx = x * x, yy = y * y, zz = z * z;
+    float xxx = xx * x, yyy = yy * y, zzz = zz * z;
+    return (
+        a0 * (-1.5 * xx * z - 1.5 * yy * z + zzz) +
+        a1 * (-0.6123724356957945 * xxx - 0.6123724356957945 * x * yy + 2.449489742783178 * x * zz) +
+        a2 * (-0.6123724356957945 * xx * y - 0.6123724356957945 * yyy + 2.449489742783178 * y * zz) +
+        a3 * (1.9364916731037085 * xx * z - 1.9364916731037085 * yy * z) +
+        a4 * (3.872983346207417 * x * y * z) +
+        a5 * (0.7905694150420949 * xxx - 2.3717082451262845 * x * yy) +
+        a6 * (2.3717082451262845 * xx * y - 0.7905694150420949 * yyy)
+    );
+}
+
+float L4(vec3 p, float a0, float a1, float a2, float a3, float a4, float a5, float a6, float a7, float a8) {
+    float x = p.x, y = p.y, z = p.z;
+    float xx = x * x, yy = y * y, zz = z * z;
+    float xxx = xx * x, yyy = yy * y, zzz = zz * z;
+    float xxxx = xxx * x, yyyy = yyy * y, zzzz = zzz * z;
+    return (
+        a0 * (0.375 * xxxx + 0.75 * xx * yy + 0.375 * yyyy - 3.0 * xx * zz - 3.0 * yy * zz + zzzz) +
+        a1 * (-2.3717082451262845 * xxx * z - 2.3717082451262845 * x * yy * z + 3.1622776601683795 * x * zzz) +
+        a2 * (-2.3717082451262845 * xx * y * z - 2.3717082451262845 * yyy * z + 3.1622776601683795 * y * zzz) +
+        a3 * (-0.5590169943749475 * xxxx + 0.5590169943749475 * yyyy + 3.3541019662496847 * xx * zz - 3.3541019662496847 * yy * zz) +
+        a4 * (-1.118033988749895 * xxx * y - 1.118033988749895 * x * yyy + 6.708203932499369 * x * y * zz) +
+        a5 * (2.091650066335189 * xxx * z + -6.274950199005566 * x * yy * z) +
+        a6 * (6.274950199005566 * xx * y * z + -2.091650066335189 * yyy * z) +
+        a7 * (0.739509972887452 * xxxx - 4.437059837324712 * xx * yy + 0.739509972887452 * yyyy) +
+        a8 * (2.958039891549808 * xxx * y + -2.958039891549808 * x * yyy)
+    );
+}
+
+float alpha(float offset, float f) {
+    #ifdef WEBGL1
+        // in webgl1, the value is in the alpha channel!
+        return texture2D(tAlpha, vec2(offset * f, 0.5)).a;
+    #else
+        return texture2D(tAlpha, vec2(offset * f, 0.5)).x;
+    #endif
+}
+
+float Y(int L, vec3 X, float aO, float fA) {
+    if (L == 0) {
+        return alpha(aO, fA);
+    } else if (L == 1) {
+        return L1(X,
+            alpha(aO, fA), alpha(aO + 1.0, fA), alpha(aO + 2.0, fA)
+        );
+    } else if (L == 2) {
+        return L2(X,
+            alpha(aO, fA), alpha(aO + 1.0, fA), alpha(aO + 2.0, fA), alpha(aO + 3.0, fA), alpha(aO + 4.0, fA)
+        );
+    } else if (L == 3) {
+        return L3(X,
+            alpha(aO, fA), alpha(aO + 1.0, fA), alpha(aO + 2.0, fA), alpha(aO + 3.0, fA), alpha(aO + 4.0, fA),
+            alpha(aO + 5.0, fA), alpha(aO + 6.0, fA)
+        );
+    } else if (L == 4) {
+        return L4(X,
+            alpha(aO, fA), alpha(aO + 1.0, fA), alpha(aO + 2.0, fA), alpha(aO + 3.0, fA), alpha(aO + 4.0, fA),
+            alpha(aO + 5.0, fA), alpha(aO + 6.0, fA), alpha(aO + 7.0, fA), alpha(aO + 8.0, fA)
+        );
+    }
+    // TODO: do we need L > 4?
+    return 0.0;
+}
+
+#ifndef WEBGL1
+    float R(float R2, int start, int end, float fCoeff) {
+        float gauss = 0.0;
+        for (int i = start; i < end; i++) {
+            vec2 c = texture2D(tCoeff, vec2(float(i) * fCoeff, 0.5)).xy;
+            gauss += c.x * exp(-c.y * R2);
+        }
+        return gauss;
+    }
+#else
+    float R(float R2, int start, int end, float fCoeff) {
+        float gauss = 0.0;
+        int o = start;
+        for (int i = 0; i < uMaxCoeffs; i++) {
+            if (o >= end) break;
+
+            vec2 c = texture2D(tCoeff, vec2(float(o) * fCoeff, 0.5)).xy;
+            gauss += c.x * exp(-c.y * R2);
+            o++;
+        }
+        return gauss;
+    }
+#endif
+`;
+
+export const MAIN = `
+    float fCenter = 1.0 / float(uNCenters - 1);
+    float fCoeff = 1.0 / float(uNCoeff - 1);
+    float fA = 1.0 / float(uNAlpha - 1);
+
+    float v = 0.0;
+
+    for (int i = 0; i < uNCenters; i++) {
+        vec2 cCoord = vec2(float(i) * fCenter, 0.5);
+
+        vec4 center = texture2D(tCenters, cCoord);
+        vec3 X = xyz - center.xyz;
+        float R2 = dot(X, X);
+
+        // center.w is squared cutoff radius
+        if (R2 > center.w) {
+            continue;
+        }
+
+        vec4 info = texture2D(tInfo, cCoord);
+
+        int L = int(info.x);
+        float aO = info.y;
+        int coeffStart = int(info.z);
+        int coeffEnd = int(info.w);
+
+        v += R(R2, coeffStart, coeffEnd, fCoeff) * Y(L, X, aO, fA);
+    }
+`;
--- a/src/extensions/alpha-orbitals/orbitals.ts
+++ b/src/extensions/alpha-orbitals/orbitals.ts
@@ -0,0 +1,131 @@
+/**
+ * Copyright (c) 2020 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * Inspired by https://github.com/dgasmith/gau2grid.
+ *
+ * @author David Sehnal <david.sehnal@gmail.com>
+ */
+
+import { sortArray } from '../../mol-data/util';
+import { canComputeGrid3dOnGPU } from '../../mol-gl/compute/grid3d';
+import { WebGLContext } from '../../mol-gl/webgl/context';
+import { Task } from '../../mol-task';
+import { sphericalCollocation } from './collocation';
+import { AlphaOrbital, createGrid, CubeGrid, CubeGridComputationParams, initCubeGrid } from './data-model';
+import { gpuComputeAlphaOrbitalsGridValues } from './gpu/compute';
+
+// setDebugMode(true);
+
+export function createSphericalCollocationGrid(
+    params: CubeGridComputationParams, orbital: AlphaOrbital, webgl?: WebGLContext
+): Task<CubeGrid> {
+    return Task.create('Spherical Collocation Grid', async (ctx) => {
+        const cubeGrid = initCubeGrid(params);
+
+        let matrix: Float32Array;
+        if (canComputeGrid3dOnGPU(webgl)) {
+            // console.time('gpu');
+            matrix = await gpuComputeAlphaOrbitalsGridValues(ctx, webgl!, cubeGrid, orbital);
+            // console.timeEnd('gpu');
+        } else {
+            // console.time('cpu');
+            matrix = await sphericalCollocation(cubeGrid, orbital, ctx);
+            // console.timeEnd('cpu');
+        }
+
+        const grid = createGrid(cubeGrid, matrix, [0, 1, 2]);
+        let isovalues: { negative?: number, positive?: number } | undefined;
+
+        if (!params.doNotComputeIsovalues) {
+            isovalues = computeOrbitalIsocontourValues(matrix, 0.85);
+        }
+
+        return { grid, isovalues };
+    });
+}
+
+export function computeOrbitalIsocontourValues(input: Float32Array, cumulativeThreshold: number) {
+    let weightSum = 0;
+    for (let i = 0, _i = input.length; i < _i; i++) {
+        const v = input[i];
+        const w = v * v;
+        weightSum += w;
+    }
+    const avgWeight = weightSum / input.length;
+    let minWeight = 3 * avgWeight;
+
+    // do not try to identify isovalues for degenerate data
+    // e.g. all values are almost same
+    if (Math.abs(avgWeight - input[0] * input[0]) < 1e-5) {
+        return { negative: void 0, positive: void 0 };
+    }
+
+    let size = 0;
+    while (true) {
+        let csum = 0;
+        size = 0;
+        for (let i = 0, _i = input.length; i < _i; i++) {
+            const v = input[i];
+            const w = v * v;
+            if (w >= minWeight) {
+                csum += w;
+                size++;
+            }
+        }
+
+        if (csum / weightSum > cumulativeThreshold) {
+            break;
+        }
+
+        minWeight -= avgWeight;
+    }
+
+    const values = new Float32Array(size);
+    const weights = new Float32Array(size);
+    const indices = new Int32Array(size);
+
+    let o = 0;
+    for (let i = 0, _i = input.length; i < _i; i++) {
+        const v = input[i];
+        const w = v * v;
+        if (w >= minWeight) {
+            values[o] = v;
+            weights[o] = w;
+            indices[o] = o;
+            o++;
+        }
+    }
+
+    sortArray(
+        indices,
+        (indices, i, j) => weights[indices[j]] - weights[indices[i]]
+    );
+
+    let cweight = 0,
+        cutoffIndex = 0;
+    for (let i = 0; i < size; i++) {
+        cweight += weights[indices[i]];
+
+        if (cweight / weightSum >= cumulativeThreshold) {
+            cutoffIndex = i;
+            break;
+        }
+    }
+
+    let positive = Number.POSITIVE_INFINITY,
+        negative = Number.NEGATIVE_INFINITY;
+
+    for (let i = 0; i < cutoffIndex; i++) {
+        const v = values[indices[i]];
+        if (v > 0) {
+            if (v < positive) positive = v;
+        } else if (v < 0) {
+            if (v > negative) negative = v;
+        }
+    }
+
+    return {
+        negative: negative !== Number.NEGATIVE_INFINITY ? negative : void 0,
+        positive: positive !== Number.POSITIVE_INFINITY ? positive : void 0,
+    };
+}
--- a/src/extensions/alpha-orbitals/spherical-functions.ts
+++ b/src/extensions/alpha-orbitals/spherical-functions.ts
@@ -0,0 +1,93 @@
+/**
+ * Copyright (c) 2020 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * Inspired by https://github.com/dgasmith/gau2grid.
+ *
+ * @author David Sehnal <david.sehnal@gmail.com>
+ */
+
+// gaussian:
+//     R_0, R^+_1, R^-_1, ..., R^+_l, R^-_l
+// cca:
+//     R^-_(l), R^-_(l-1), ..., R_0, ..., R^+_(l-1), R^+_l
+// cca-reverse:
+//     R^+_(l), R^+_(l-1), ..., R_0, ..., R^-_(l-1), R^-_l
+export type SphericalBasisOrder = 'gaussian' | 'cca' | 'cca-reverse';
+
+export function normalizeBasicOrder(
+    L: number,
+    alpha: number[],
+    order: SphericalBasisOrder
+) {
+    if (order === 'gaussian' || L === 0) return alpha;
+
+    const ret: number[] = [alpha[L]];
+    for (let l = 0; l < L; l++) {
+        const a = alpha[L - l - 1],
+            b = alpha[L + l + 1];
+        if (order === 'cca') ret.push(b, a);
+        else ret.push(a, b);
+    }
+    return ret;
+}
+
+export type SphericalFunc = (
+    alpha: number[],
+    x: number,
+    y: number,
+    z: number
+) => number;
+
+export const SphericalFunctions: SphericalFunc[] = [L0, L1, L2, L3, L4];
+
+// L_i functions were auto-generated.
+
+function L0(alpha: number[], x: number, y: number, z: number) {
+    return alpha[0];
+}
+
+function L1(alpha: number[], x: number, y: number, z: number) {
+    return alpha[0] * z + alpha[1] * x + alpha[2] * y;
+}
+
+function L2(alpha: number[], x: number, y: number, z: number) {
+    const xx = x * x, yy = y * y, zz = z * z;
+    return (
+        alpha[0] * (-0.5 * xx - 0.5 * yy + zz) +
+        alpha[1] * (1.7320508075688772 * x * z) +
+        alpha[2] * (1.7320508075688772 * y * z) +
+        alpha[3] * (0.8660254037844386 * xx - 0.8660254037844386 * yy) +
+        alpha[4] * (1.7320508075688772 * x * y)
+    );
+}
+
+function L3(alpha: number[], x: number, y: number, z: number) {
+    const xx = x * x, yy = y * y, zz = z * z;
+    const xxx = xx * x, yyy = yy * y, zzz = zz * z;
+    return (
+        alpha[0] * (-1.5 * xx * z - 1.5 * yy * z + zzz) +
+        alpha[1] * (-0.6123724356957945 * xxx - 0.6123724356957945 * x * yy + 2.449489742783178 * x * zz) +
+        alpha[2] * (-0.6123724356957945 * xx * y - 0.6123724356957945 * yyy + 2.449489742783178 * y * zz) +
+        alpha[3] * (1.9364916731037085 * xx * z - 1.9364916731037085 * yy * z) +
+        alpha[4] * (3.872983346207417 * x * y * z) +
+        alpha[5] * (0.7905694150420949 * xxx - 2.3717082451262845 * x * yy) +
+        alpha[6] * (2.3717082451262845 * xx * y - 0.7905694150420949 * yyy)
+    );
+}
+
+function L4(alpha: number[], x: number, y: number, z: number) {
+    const xx = x * x, yy = y * y, zz = z * z;
+    const xxx = xx * x, yyy = yy * y, zzz = zz * z;
+    const xxxx = xxx * x, yyyy = yyy * y, zzzz = zzz * z;
+    return (
+        alpha[0] * (0.375 * xxxx + 0.75 * xx * yy + 0.375 * yyyy - 3.0 * xx * zz - 3.0 * yy * zz + zzzz) +
+        alpha[1] * (-2.3717082451262845 * xxx * z - 2.3717082451262845 * x * yy * z + 3.1622776601683795 * x * zzz) +
+        alpha[2] * (-2.3717082451262845 * xx * y * z - 2.3717082451262845 * yyy * z + 3.1622776601683795 * y * zzz) +
+        alpha[3] * (-0.5590169943749475 * xxxx + 0.5590169943749475 * yyyy + 3.3541019662496847 * xx * zz - 3.3541019662496847 * yy * zz) +
+        alpha[4] * (-1.118033988749895 * xxx * y - 1.118033988749895 * x * yyy + 6.708203932499369 * x * y * zz) +
+        alpha[5] * (2.091650066335189 * xxx * z + -6.274950199005566 * x * yy * z) +
+        alpha[6] * (6.274950199005566 * xx * y * z + -2.091650066335189 * yyy * z) +
+        alpha[7] * (0.739509972887452 * xxxx - 4.437059837324712 * xx * yy + 0.739509972887452 * yyyy) +
+        alpha[8] * (2.958039891549808 * xxx * y + -2.958039891549808 * x * yyy)
+    );
+}
--- a/src/extensions/alpha-orbitals/transforms.ts
+++ b/src/extensions/alpha-orbitals/transforms.ts
@@ -0,0 +1,236 @@
+/**
+ * Copyright (c) 2020 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * @author David Sehnal <david.sehnal@gmail.com>
+ */
+
+import { PluginStateObject, PluginStateTransform } from '../../mol-plugin-state/objects';
+import { createSphericalCollocationGrid } from './orbitals';
+import { ParamDefinition as PD } from '../../mol-util/param-definition';
+import { Task } from '../../mol-task';
+import { CustomProperties } from '../../mol-model/custom-property';
+import { SphericalBasisOrder } from './spherical-functions';
+import { Volume } from '../../mol-model/volume';
+import { PluginContext } from '../../mol-plugin/context';
+import { ColorNames } from '../../mol-util/color/names';
+import { createVolumeRepresentationParams } from '../../mol-plugin-state/helpers/volume-representation-params';
+import { StateTransformer } from '../../mol-state';
+import { Theme } from '../../mol-theme/theme';
+import { VolumeRepresentation3DHelpers } from '../../mol-plugin-state/transforms/representation';
+import { AlphaOrbital, Basis, CubeGrid } from './data-model';
+import { createSphericalCollocationDensityGrid } from './density';
+import { Tensor } from '../../mol-math/linear-algebra';
+
+export class BasisAndOrbitals extends PluginStateObject.Create<{ basis: Basis, order: SphericalBasisOrder, orbitals: AlphaOrbital[] }>({ name: 'Basis', typeClass: 'Object' }) { }
+
+export const StaticBasisAndOrbitals = PluginStateTransform.BuiltIn({
+    name: 'static-basis-and-orbitals',
+    display: 'Basis and Orbitals',
+    from: PluginStateObject.Root,
+    to: BasisAndOrbitals,
+    params: {
+        label: PD.Text('Orbital Data', { isHidden: true }),
+        basis: PD.Value<Basis>(void 0 as any, { isHidden: true }),
+        order: PD.Text<SphericalBasisOrder>('gaussian' as SphericalBasisOrder, { isHidden: true }),
+        orbitals: PD.Value<AlphaOrbital[]>([], { isHidden: true })
+    },
+})({
+    apply({ params }) {
+        return new BasisAndOrbitals({ basis: params.basis, order: params.order, orbitals: params.orbitals }, { label: params.label });
+    }
+});
+
+const CreateOrbitalVolumeParamBase = {
+    cutoffThreshold: PD.Numeric(0.0015, { min: 0, max: 0.1, step: 0.0001 }),
+    boxExpand: PD.Numeric(4.5, { min: 0, max: 7, step: 0.1 }),
+    gridSpacing: PD.ObjectList({ atomCount: PD.Numeric(0), spacing: PD.Numeric(0.35, { min: 0.1, max: 2, step: 0.01 }) }, e => `Atoms ${e.atomCount}: ${e.spacing}`, {
+        defaultValue: [
+            { atomCount: 55, spacing: 0.5 },
+            { atomCount: 40, spacing: 0.45 },
+            { atomCount: 25, spacing: 0.4 },
+            { atomCount: 0, spacing: 0.35 },
+        ]
+    }),
+    clampValues: PD.MappedStatic('off', {
+        off: PD.EmptyGroup(),
+        on: PD.Group({
+            sigma: PD.Numeric(8, { min: 1, max: 20 }, { description: 'Clamp values to range [sigma * negIsoValue, sigma * posIsoValue].' })
+        })
+    })
+};
+
+function clampData(matrix: Tensor.Data, min: number, max: number) {
+    for (let i = 0, _i = matrix.length; i < _i; i++) {
+        const v = matrix[i];
+        if (v < min) matrix[i] = min;
+        else if (v > max) matrix[i] = max;
+    }
+}
+
+function clampGrid(data: CubeGrid, v: number) {
+    const grid = data.grid;
+    const min = (data.isovalues?.negative ?? data.grid.stats.min) * v;
+    const max = (data.isovalues?.positive ?? data.grid.stats.max) * v;
+
+    // clamp values for better direct volume resolution
+    // current implementation uses Byte array for values
+    // if this is not enough, update mol* to use float
+    // textures instead
+    if (grid.stats.min < min || grid.stats.max > max) {
+        clampData(data.grid.cells.data, min, max);
+        if (grid.stats.min < min) {
+            (grid.stats.min as number) = min;
+        }
+        if (grid.stats.max > max) {
+            (grid.stats.max as number) = max;
+        }
+    }
+}
+
+export const CreateOrbitalVolume = PluginStateTransform.BuiltIn({
+    name: 'create-orbital-volume',
+    display: 'Orbital Volume',
+    from: BasisAndOrbitals,
+    to: PluginStateObject.Volume.Data,
+    params: (a) => {
+        if (!a) {
+            return { index: PD.Numeric(0), ...CreateOrbitalVolumeParamBase };
+        }
+
+        return {
+            index: PD.Select(0, a.data.orbitals.map((o, i) => [i, `[${i + 1}] ${o.energy.toFixed(4)}`])),
+            ...CreateOrbitalVolumeParamBase
+        };
+    }
+})({
+    apply({ a, params }, plugin: PluginContext) {
+        return Task.create('Orbital Volume', async ctx => {
+            const data = await createSphericalCollocationGrid({
+                basis: a.data.basis,
+                cutoffThreshold: params.cutoffThreshold,
+                sphericalOrder: a.data.order,
+                boxExpand: params.boxExpand,
+                gridSpacing: params.gridSpacing.map(e => [e.atomCount, e.spacing] as [number, number])
+            }, a.data.orbitals[params.index], plugin.canvas3d?.webgl).runInContext(ctx);
+            const volume: Volume = {
+                grid: data.grid,
+                sourceData: { name: 'custom grid', kind: 'alpha-orbitals', data },
+                customProperties: new CustomProperties(),
+                _propertyData: Object.create(null),
+            };
+
+            if (params.clampValues?.name === 'on') {
+                clampGrid(data, params.clampValues?.params?.sigma ?? 8);
+            }
+
+            return new PluginStateObject.Volume.Data(volume, { label: 'Orbital Volume' });
+        });
+    }
+});
+
+export const CreateOrbitalDensityVolume = PluginStateTransform.BuiltIn({
+    name: 'create-orbital-density-volume',
+    display: 'Orbital Density Volume',
+    from: BasisAndOrbitals,
+    to: PluginStateObject.Volume.Data,
+    params: CreateOrbitalVolumeParamBase
+})({
+    apply({ a, params }, plugin: PluginContext) {
+        return Task.create('Orbital Volume', async ctx => {
+            const data = await createSphericalCollocationDensityGrid({
+                basis: a.data.basis,
+                cutoffThreshold: params.cutoffThreshold,
+                sphericalOrder: a.data.order,
+                boxExpand: params.boxExpand,
+                gridSpacing: params.gridSpacing.map(e => [e.atomCount, e.spacing] as [number, number])
+            }, a.data.orbitals, plugin.canvas3d?.webgl).runInContext(ctx);
+            const volume: Volume = {
+                grid: data.grid,
+                sourceData: { name: 'custom grid', kind: 'alpha-orbitals', data },
+                customProperties: new CustomProperties(),
+                _propertyData: Object.create(null),
+            };
+
+            if (params.clampValues?.name === 'on') {
+                clampGrid(data, params.clampValues?.params?.sigma ?? 8);
+            }
+
+            return new PluginStateObject.Volume.Data(volume, { label: 'Orbital Volume' });
+        });
+    }
+});
+
+export const CreateOrbitalRepresentation3D = PluginStateTransform.BuiltIn({
+    name: 'create-orbital-representation-3d',
+    display: 'Orbital Representation 3D',
+    from: PluginStateObject.Volume.Data,
+    to: PluginStateObject.Volume.Representation3D,
+    params: {
+        directVolume: PD.Boolean(false),
+        relativeIsovalue: PD.Numeric(1, { min: 0.01, max: 5, step: 0.01 }),
+        kind: PD.Select<'positive' | 'negative'>('positive', [['positive', 'Positive'], ['negative', 'Negative']]),
+        color: PD.Color(ColorNames.blue),
+        alpha: PD.Numeric(1, { min: 0, max: 1, step: 0.01 }),
+        xrayShaded: PD.Boolean(false),
+        pickable: PD.Boolean(true)
+    }
+})({
+    canAutoUpdate() {
+        return true;
+    },
+    apply({ a, params: srcParams }, plugin: PluginContext) {
+        return Task.create('Orbitals Representation 3D', async ctx => {
+            const params = volumeParams(plugin, a, srcParams);
+
+            const propertyCtx = { runtime: ctx, assetManager: plugin.managers.asset };
+            const provider = plugin.representation.volume.registry.get(params.type.name);
+            if (provider.ensureCustomProperties) await provider.ensureCustomProperties.attach(propertyCtx, a.data);
+            const props = params.type.params || {};
+            const repr = provider.factory({ webgl: plugin.canvas3d?.webgl, ...plugin.representation.volume.themes }, provider.getParams);
+            repr.setTheme(Theme.create(plugin.representation.volume.themes, { volume: a.data }, params));
+            await repr.createOrUpdate(props, a.data).runInContext(ctx);
+            repr.setState({ pickable: srcParams.pickable });
+            return new PluginStateObject.Volume.Representation3D({ repr, source: a }, { label: provider.label, description: VolumeRepresentation3DHelpers.getDescription(props) });
+        });
+    },
+    update({ a, b, newParams: srcParams }, plugin: PluginContext) {
+        return Task.create('Orbitals Representation 3D', async ctx => {
+            const newParams = volumeParams(plugin, a, srcParams);
+
+            const props = { ...b.data.repr.props, ...newParams.type.params };
+            b.data.repr.setTheme(Theme.create(plugin.representation.volume.themes, { volume: a.data }, newParams));
+            await b.data.repr.createOrUpdate(props, a.data).runInContext(ctx);
+            b.data.repr.setState({ pickable: srcParams.pickable });
+            b.description = VolumeRepresentation3DHelpers.getDescription(props);
+            return StateTransformer.UpdateResult.Updated;
+        });
+    }
+});
+
+function volumeParams(plugin: PluginContext, volume: PluginStateObject.Volume.Data, params: StateTransformer.Params<typeof CreateOrbitalRepresentation3D>) {
+    if (volume.data.sourceData.kind !== 'alpha-orbitals') throw new Error('Invalid data source kind.');
+
+    const { isovalues } = volume.data.sourceData.data as CubeGrid;
+    if (!isovalues) throw new Error('Isovalues are not computed.');
+
+    const value = isovalues[params.kind];
+
+    return createVolumeRepresentationParams(plugin, volume.data, params.directVolume ? {
+        type: 'direct-volume',
+        typeParams: {
+            alpha: params.alpha,
+            renderMode: {
+                name: 'isosurface',
+                params: { isoValue: { kind: 'absolute', absoluteValue: (value ?? 1000) * params.relativeIsovalue }, singleLayer: false }
+            },
+            xrayShaded: params.xrayShaded
+        },
+        color: 'uniform',
+        colorParams: { value: params.color }
+    } : {
+        type: 'isosurface',
+        typeParams: { isoValue: { kind: 'absolute', absoluteValue: (value ?? 1000) * params.relativeIsovalue }, alpha: params.alpha, xrayShaded: params.xrayShaded },
+        color: 'uniform',
+        colorParams: { value: params.color }
+    });
+}
--- a/src/extensions/anvil/algorithm.ts
+++ b/src/extensions/anvil/algorithm.ts
@@ -0,0 +1,370 @@
+/**
+ * Copyright (c) 2020 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * @author Sebastian Bittrich <sebastian.bittrich@rcsb.org>
+ * @author Alexander Rose <alexander.rose@weirdbyte.de>
+ */
+
+import { Structure, StructureElement, StructureProperties } from '../../mol-model/structure';
+import { Task, RuntimeContext } from '../../mol-task';
+import { CentroidHelper } from '../../mol-math/geometry/centroid-helper';
+import { AccessibleSurfaceAreaProvider } from '../../mol-model-props/computed/accessible-surface-area';
+import { Vec3 } from '../../mol-math/linear-algebra';
+import { getElementMoleculeType } from '../../mol-model/structure/util';
+import { MoleculeType } from '../../mol-model/structure/model/types';
+import { AccessibleSurfaceArea } from '../../mol-model-props/computed/accessible-surface-area/shrake-rupley';
+import { ParamDefinition as PD } from '../../mol-util/param-definition';
+import { MembraneOrientation } from './prop';
+
+interface ANVILContext {
+    structure: Structure,
+
+    numberOfSpherePoints: number,
+    stepSize: number,
+    minThickness: number,
+    maxThickness: number,
+    asaCutoff: number,
+
+    offsets: ArrayLike<number>,
+    exposed: ArrayLike<boolean>,
+    centroid: Vec3,
+    extent: number
+};
+
+export const ANVILParams = {
+    numberOfSpherePoints: PD.Numeric(120, { min: 35, max: 700, step: 1 }, { description: 'Number of spheres/directions to test for membrane placement. Original value is 350.' }),
+    stepSize: PD.Numeric(1, { min: 0.25, max: 4, step: 0.25 }, { description: 'Thickness of membrane slices that will be tested' }),
+    minThickness: PD.Numeric(20, { min: 10, max: 30, step: 1}, { description: 'Minimum membrane thickness used during refinement' }),
+    maxThickness: PD.Numeric(40, { min: 30, max: 50, step: 1}, { description: 'Maximum membrane thickness used during refinement' }),
+    asaCutoff: PD.Numeric(40, { min: 10, max: 100, step: 1 }, { description: 'Absolute ASA cutoff above which residues will be considered' })
+};
+export type ANVILParams = typeof ANVILParams
+export type ANVILProps = PD.Values<ANVILParams>
+
+/**
+ * Implements:
+ * Membrane positioning for high- and low-resolution protein structures through a binary classification approach
+ * Guillaume Postic, Yassine Ghouzam, Vincent Guiraud, and Jean-Christophe Gelly
+ * Protein Engineering, Design & Selection, 2015, 1–5
+ * doi: 10.1093/protein/gzv063
+ */
+export function computeANVIL(structure: Structure, props: ANVILProps) {
+    return Task.create('Compute Membrane Orientation', async runtime => {
+        return await calculate(runtime, structure, props);
+    });
+}
+
+
+const centroidHelper = new CentroidHelper();
+function initialize(structure: Structure, props: ANVILProps): ANVILContext {
+    const l = StructureElement.Location.create(structure);
+    const { label_atom_id, x, y, z } = StructureProperties.atom;
+    const elementCount = structure.polymerResidueCount;
+    centroidHelper.reset();
+
+    let offsets = new Int32Array(elementCount);
+    let exposed = new Array<boolean>(elementCount);
+
+    const accessibleSurfaceArea = structure && AccessibleSurfaceAreaProvider.get(structure);
+    const asa = accessibleSurfaceArea.value!;
+
+    const vec = Vec3();
+    let m = 0;
+    for (let i = 0, il = structure.units.length; i < il; ++i) {
+        const unit = structure.units[i];
+        const { elements } = unit;
+        l.unit = unit;
+
+        for (let j = 0, jl = elements.length; j < jl; ++j) {
+            const eI = elements[j];
+            l.element = eI;
+
+            // consider only amino acids
+            if (getElementMoleculeType(unit, eI) !== MoleculeType.Protein) {
+                continue;
+            }
+
+            // only CA is considered for downstream operations
+            if (label_atom_id(l) !== 'CA') {
+                continue;
+            }
+
+            // while iterating use first pass to compute centroid
+            Vec3.set(vec, x(l), y(l), z(l));
+            centroidHelper.includeStep(vec);
+
+            // keep track of offsets and exposed state to reuse
+            offsets[m] = structure.serialMapping.getSerialIndex(l.unit, l.element);
+            exposed[m] = AccessibleSurfaceArea.getValue(l, asa) > props.asaCutoff;
+
+            m++;
+        }
+    }
+
+    // omit potentially empty tail1
+    offsets = offsets.slice(0, m);
+    exposed = exposed.slice(0, m);
+
+    // calculate centroid and extent
+    centroidHelper.finishedIncludeStep();
+    const centroid = centroidHelper.center;
+    for (let k = 0, kl = offsets.length; k < kl; k++) {
+        setLocation(l, structure, offsets[k]);
+        Vec3.set(vec, x(l), y(l), z(l));
+        centroidHelper.radiusStep(vec);
+    }
+    const extent = 1.2 * Math.sqrt(centroidHelper.radiusSq);
+
+    return {
+        ...props,
+        structure: structure,
+
+        offsets: offsets,
+        exposed: exposed,
+        centroid: centroid,
+        extent: extent
+    };
+}
+
+export async function calculate(runtime: RuntimeContext, structure: Structure, params: ANVILProps): Promise<MembraneOrientation> {
+    const { label_comp_id } = StructureProperties.atom;
+
+    const ctx = initialize(structure, params);
+    const initialHphobHphil = HphobHphil.filtered(ctx, label_comp_id);
+
+    const initialMembrane = findMembrane(ctx, generateSpherePoints(ctx, ctx.numberOfSpherePoints), initialHphobHphil, label_comp_id);
+    const alternativeMembrane = findMembrane(ctx, findProximateAxes(ctx, initialMembrane), initialHphobHphil, label_comp_id);
+
+    const membrane = initialMembrane.qmax! > alternativeMembrane.qmax! ? initialMembrane : alternativeMembrane;
+
+    return {
+        planePoint1: membrane.planePoint1,
+        planePoint2: membrane.planePoint2,
+        normalVector: membrane.normalVector!,
+        radius: ctx.extent,
+        centroid: ctx.centroid
+    };
+}
+
+interface MembraneCandidate {
+    planePoint1: Vec3,
+    planePoint2: Vec3,
+    stats: HphobHphil,
+    normalVector?: Vec3,
+    spherePoint?: Vec3,
+    qmax?: number
+}
+
+namespace MembraneCandidate {
+    export function initial(c1: Vec3, c2: Vec3, stats: HphobHphil): MembraneCandidate {
+        return {
+            planePoint1: c1,
+            planePoint2: c2,
+            stats: stats
+        };
+    }
+
+    export function scored(spherePoint: Vec3, c1: Vec3, c2: Vec3, stats: HphobHphil, qmax: number, centroid: Vec3): MembraneCandidate {
+        const diam_vect = Vec3();
+        Vec3.sub(diam_vect, centroid, spherePoint);
+        return {
+            planePoint1: c1,
+            planePoint2: c2,
+            stats: stats,
+            normalVector: diam_vect,
+            spherePoint: spherePoint,
+            qmax: qmax
+        };
+    }
+}
+
+function findMembrane(ctx: ANVILContext, spherePoints: Vec3[], initialStats: HphobHphil, label_comp_id: StructureElement.Property<string>): MembraneCandidate {
+    const { centroid, stepSize, minThickness, maxThickness } = ctx;
+    // best performing membrane
+    let membrane: MembraneCandidate;
+    // score of the best performing membrane
+    let qmax = 0;
+
+    // construct slices of thickness 1.0 along the axis connecting the centroid and the spherePoint
+    const diam = Vec3();
+    for (let i = 0, il = spherePoints.length; i < il; i++) {
+        const spherePoint = spherePoints[i];
+        Vec3.sub(diam, centroid, spherePoint);
+        Vec3.scale(diam, diam, 2);
+        const diamNorm = Vec3.magnitude(diam);
+        const qvartemp = [];
+
+        for (let i = 0, il = diamNorm - stepSize; i < il; i += stepSize) {
+            const c1 = Vec3();
+            const c2 = Vec3();
+            Vec3.scaleAndAdd(c1, spherePoint, diam, i / diamNorm);
+            Vec3.scaleAndAdd(c2, spherePoint, diam, (i + stepSize) / diamNorm);
+
+            // evaluate how well this membrane slice embeddeds the peculiar residues
+            const stats = HphobHphil.filtered(ctx, label_comp_id, (testPoint: Vec3) => isInMembranePlane(testPoint, diam, c1, c2));
+            qvartemp.push(MembraneCandidate.initial(c1, c2, stats));
+        }
+
+        let jmax = (minThickness / stepSize) - 1;
+
+        for (let width = 0, widthl = maxThickness; width < widthl;) {
+            const imax = qvartemp.length - 1 - jmax;
+
+            for (let i = 0, il = imax; i < il; i++) {
+                const c1 = qvartemp[i].planePoint1;
+                const c2 = qvartemp[i + jmax].planePoint2;
+
+                let hphob = 0;
+                let hphil = 0;
+                let total = 0;
+                for (let j = 0; j < jmax; j++) {
+                    const ij = qvartemp[i + j];
+                    if (j === 0 || j === jmax - 1) {
+                        hphob += 0.5 * ij.stats.hphob;
+                        hphil += 0.5 * ij.stats.hphil;
+                    } else {
+                        hphob += ij.stats.hphob;
+                        hphil += ij.stats.hphil;
+                    }
+                    total += ij.stats.total;
+                }
+
+                const stats = HphobHphil.of(hphob, hphil, total);
+
+                if (hphob !== 0) {
+                    const qvaltest = qValue(stats, initialStats);
+                    if (qvaltest > qmax) {
+                        qmax = qvaltest;
+                        membrane = MembraneCandidate.scored(spherePoint, c1, c2, HphobHphil.of(hphob, hphil, total), qmax, centroid);
+                    }
+                }
+            }
+            jmax++;
+            width = (jmax + 1) * stepSize;
+        }
+    }
+
+    return membrane!;
+}
+
+function qValue(currentStats: HphobHphil, initialStats: HphobHphil): number {
+    if(initialStats.hphob < 1) {
+        initialStats.hphob = 0.1;
+    }
+
+    if(initialStats.hphil < 1) {
+        initialStats.hphil += 1;
+    }
+
+    const part_tot = currentStats.hphob + currentStats.hphil;
+    return (currentStats.hphob * (initialStats.hphil - currentStats.hphil) - currentStats.hphil * (initialStats.hphob - currentStats.hphob)) /
+            Math.sqrt(part_tot * initialStats.hphob * initialStats.hphil * (initialStats.hphob + initialStats.hphil - part_tot));
+}
+
+export function isInMembranePlane(testPoint: Vec3, normalVector: Vec3, planePoint1: Vec3, planePoint2: Vec3): boolean {
+    const d1 = -Vec3.dot(normalVector, planePoint1);
+    const d2 = -Vec3.dot(normalVector, planePoint2);
+    const d = -Vec3.dot(normalVector, testPoint);
+    return d > Math.min(d1, d2) && d < Math.max(d1, d2);
+}
+
+// generates a defined number of points on a sphere with radius = extent around the specified centroid
+function generateSpherePoints(ctx: ANVILContext, numberOfSpherePoints: number): Vec3[] {
+    const { centroid, extent } = ctx;
+    const points = [];
+    let oldPhi = 0, h, theta, phi;
+    for(let k = 1, kl = numberOfSpherePoints + 1; k < kl; k++) {
+        h = -1 + 2 * (k - 1) / (numberOfSpherePoints - 1);
+        theta = Math.acos(h);
+        phi = (k === 1 || k === numberOfSpherePoints) ? 0 : (oldPhi + 3.6 / Math.sqrt(numberOfSpherePoints * (1 - h * h))) % (2 * Math.PI);
+
+        const point = Vec3.create(
+            extent * Math.sin(phi) * Math.sin(theta) + centroid[0],
+            extent * Math.cos(theta) + centroid[1],
+            extent * Math.cos(phi) * Math.sin(theta) + centroid[2]
+        );
+        points[k - 1] = point;
+        oldPhi = phi;
+    }
+
+    return points;
+}
+
+// generates sphere points close to that of the initial membrane
+function findProximateAxes(ctx: ANVILContext, membrane: MembraneCandidate): Vec3[] {
+    const { numberOfSpherePoints, extent } = ctx;
+    const points = generateSpherePoints(ctx, 30000);
+    let j = 4;
+    let sphere_pts2: Vec3[] = [];
+    while (sphere_pts2.length < numberOfSpherePoints) {
+        const d = 2 * extent / numberOfSpherePoints + j;
+        const dsq = d * d;
+        sphere_pts2 = [];
+        for (let i = 0, il = points.length; i < il; i++) {
+            if (Vec3.squaredDistance(points[i], membrane.spherePoint!) < dsq) {
+                sphere_pts2.push(points[i]);
+            }
+        }
+        j += 0.2;
+    }
+    return sphere_pts2;
+}
+
+interface HphobHphil {
+    hphob: number,
+    hphil: number,
+    total: number
+}
+
+namespace HphobHphil {
+    export function of(hphob: number, hphil: number, total?: number) {
+        return {
+            hphob: hphob,
+            hphil: hphil,
+            total: !!total ? total : hphob + hphil
+        };
+    }
+
+    const testPoint = Vec3();
+    export function filtered(ctx: ANVILContext, label_comp_id: StructureElement.Property<string>, filter?: (test: Vec3) => boolean): HphobHphil {
+        const { offsets, exposed, structure } = ctx;
+        const l = StructureElement.Location.create(structure);
+        const { x, y, z } = StructureProperties.atom;
+        let hphob = 0;
+        let hphil = 0;
+        for (let k = 0, kl = offsets.length; k < kl; k++) {
+            // ignore buried residues
+            if (!exposed[k]) {
+                continue;
+            }
+
+            setLocation(l, structure, offsets[k]);
+            Vec3.set(testPoint, x(l), y(l), z(l));
+
+            // testPoints have to be in putative membrane layer
+            if (filter && !filter(testPoint)) {
+                continue;
+            }
+
+            if (isHydrophobic(label_comp_id(l))) {
+                hphob++;
+            } else {
+                hphil++;
+            }
+        }
+        return of(hphob, hphil);
+    }
+}
+
+// ANVIL-specific (not general) definition of membrane-favoring amino acids
+const HYDROPHOBIC_AMINO_ACIDS = new Set(['ALA', 'CYS', 'GLY', 'HIS', 'ILE', 'LEU', 'MET', 'PHE', 'SER', 'THR', 'VAL']);
+export function isHydrophobic(label_comp_id: string): boolean {
+    return HYDROPHOBIC_AMINO_ACIDS.has(label_comp_id);
+}
+
+function setLocation(l: StructureElement.Location, structure: Structure, serialIndex: number) {
+    l.structure = structure;
+    l.unit = structure.units[structure.serialMapping.unitIndices[serialIndex]];
+    l.element = structure.serialMapping.elementIndices[serialIndex];
+    return l;
+}
--- a/src/extensions/anvil/behavior.ts
+++ b/src/extensions/anvil/behavior.ts
@@ -0,0 +1,174 @@
+/**
+ * Copyright (c) 2020 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * @author Alexander Rose <alexander.rose@weirdbyte.de>
+ * @author Sebastian Bittrich <sebastian.bittrich@rcsb.org>
+ */
+
+import { ParamDefinition as PD } from '../../mol-util/param-definition';
+import { StructureRepresentationPresetProvider, PresetStructureRepresentations } from '../../mol-plugin-state/builder/structure/representation-preset';
+import { MembraneOrientationProvider, MembraneOrientation } from './prop';
+import { StateObjectRef, StateTransformer, StateTransform } from '../../mol-state';
+import { Task } from '../../mol-task';
+import { PluginBehavior } from '../../mol-plugin/behavior';
+import { MembraneOrientationRepresentationProvider, MembraneOrientationParams, MembraneOrientationRepresentation } from './representation';
+import { HydrophobicityColorThemeProvider } from '../../mol-theme/color/hydrophobicity';
+import { PluginStateObject, PluginStateTransform } from '../../mol-plugin-state/objects';
+import { PluginContext } from '../../mol-plugin/context';
+import { DefaultQueryRuntimeTable } from '../../mol-script/runtime/query/compiler';
+import { StructureSelectionQuery, StructureSelectionCategory } from '../../mol-plugin-state/helpers/structure-selection-query';
+import { MolScriptBuilder as MS } from '../../mol-script/language/builder';
+import { GenericRepresentationRef } from '../../mol-plugin-state/manager/structure/hierarchy-state';
+
+const Tag = MembraneOrientation.Tag;
+
+export const ANVILMembraneOrientation = PluginBehavior.create<{ autoAttach: boolean }>({
+    name: 'anvil-membrane-orientation-prop',
+    category: 'custom-props',
+    display: {
+        name: 'Membrane Orientation',
+        description: 'Data calculated with ANVIL algorithm.'
+    },
+    ctor: class extends PluginBehavior.Handler<{ autoAttach: boolean }> {
+        private provider = MembraneOrientationProvider
+
+        register(): void {
+            DefaultQueryRuntimeTable.addCustomProp(this.provider.descriptor);
+
+            this.ctx.customStructureProperties.register(this.provider, this.params.autoAttach);
+
+            this.ctx.representation.structure.registry.add(MembraneOrientationRepresentationProvider);
+            this.ctx.query.structure.registry.add(isTransmembrane);
+
+            this.ctx.genericRepresentationControls.set(Tag.Representation, selection => {
+                const refs: GenericRepresentationRef[] = [];
+                selection.structures.forEach(structure => {
+                    const memRepr = structure.genericRepresentations?.filter(r => r.cell.transform.transformer.id === MembraneOrientation3D.id)[0];
+                    if (memRepr) refs.push(memRepr);
+                });
+                return [refs, 'Membrane Orientation'];
+            });
+            this.ctx.builders.structure.representation.registerPreset(MembraneOrientationPreset);
+        }
+
+        update(p: { autoAttach: boolean }) {
+            let updated = this.params.autoAttach !== p.autoAttach;
+            this.params.autoAttach = p.autoAttach;
+            this.ctx.customStructureProperties.setDefaultAutoAttach(this.provider.descriptor.name, this.params.autoAttach);
+            return updated;
+        }
+
+        unregister() {
+            DefaultQueryRuntimeTable.removeCustomProp(this.provider.descriptor);
+
+            this.ctx.customStructureProperties.unregister(this.provider.descriptor.name);
+
+            this.ctx.representation.structure.registry.remove(MembraneOrientationRepresentationProvider);
+            this.ctx.query.structure.registry.remove(isTransmembrane);
+
+            this.ctx.genericRepresentationControls.delete(Tag.Representation);
+            this.ctx.builders.structure.representation.unregisterPreset(MembraneOrientationPreset);
+        }
+    },
+    params: () => ({
+        autoAttach: PD.Boolean(false)
+    })
+});
+
+//
+
+export const isTransmembrane = StructureSelectionQuery('Residues Embedded in Membrane', MS.struct.modifier.union([
+    MS.struct.modifier.wholeResidues([
+        MS.struct.modifier.union([
+            MS.struct.generator.atomGroups({
+                'chain-test': MS.core.rel.eq([MS.ammp('objectPrimitive'), 'atomistic']),
+                'atom-test': MembraneOrientation.symbols.isTransmembrane.symbol(),
+            })
+        ])
+    ])
+]), {
+    description: 'Select residues that are embedded between the membrane layers.',
+    category: StructureSelectionCategory.Residue,
+    ensureCustomProperties: (ctx, structure) => {
+        return MembraneOrientationProvider.attach(ctx, structure);
+    }
+});
+
+//
+
+export { MembraneOrientation3D };
+
+type MembraneOrientation3D = typeof MembraneOrientation3D
+const MembraneOrientation3D = PluginStateTransform.BuiltIn({
+    name: 'membrane-orientation-3d',
+    display: {
+        name: 'Membrane Orientation',
+        description: 'Membrane Orientation planes and rims. Data calculated with ANVIL algorithm.'
+    },
+    from: PluginStateObject.Molecule.Structure,
+    to: PluginStateObject.Shape.Representation3D,
+    params: (a) => {
+        return {
+            ...MembraneOrientationParams,
+        };
+    }
+})({
+    canAutoUpdate({ oldParams, newParams }) {
+        return true;
+    },
+    apply({ a, params }, plugin: PluginContext) {
+        return Task.create('Membrane Orientation', async ctx => {
+            await MembraneOrientationProvider.attach({ runtime: ctx, assetManager: plugin.managers.asset }, a.data);
+            const repr = MembraneOrientationRepresentation({ webgl: plugin.canvas3d?.webgl, ...plugin.representation.structure.themes }, () => MembraneOrientationParams);
+            await repr.createOrUpdate(params, a.data).runInContext(ctx);
+            return new PluginStateObject.Shape.Representation3D({ repr, source: a }, { label: 'Membrane Orientation' });
+        });
+    },
+    update({ a, b, newParams }, plugin: PluginContext) {
+        return Task.create('Membrane Orientation', async ctx => {
+            await MembraneOrientationProvider.attach({ runtime: ctx, assetManager: plugin.managers.asset }, a.data);
+            const props = { ...b.data.repr.props, ...newParams };
+            await b.data.repr.createOrUpdate(props, a.data).runInContext(ctx);
+            return StateTransformer.UpdateResult.Updated;
+        });
+    },
+    isApplicable(a) {
+        return MembraneOrientationProvider.isApplicable(a.data);
+    }
+});
+
+export const MembraneOrientationPreset = StructureRepresentationPresetProvider({
+    id: 'preset-membrane-orientation',
+    display: {
+        name: 'Membrane Orientation', group: 'Annotation',
+        description: 'Shows orientation of membrane layers. Data calculated with ANVIL algorithm.' // TODO add ' or obtained via RCSB PDB'
+    },
+    isApplicable(a) {
+        return MembraneOrientationProvider.isApplicable(a.data);
+    },
+    params: () => StructureRepresentationPresetProvider.CommonParams,
+    async apply(ref, params, plugin) {
+        const structureCell = StateObjectRef.resolveAndCheck(plugin.state.data, ref);
+        const structure  = structureCell?.obj?.data;
+        if (!structureCell || !structure) return {};
+
+        if (!MembraneOrientationProvider.get(structure).value) {
+            await plugin.runTask(Task.create('Membrane Orientation', async runtime => {
+                await MembraneOrientationProvider.attach({ runtime, assetManager: plugin.managers.asset }, structure);
+            }));
+        }
+
+        const membraneOrientation = await tryCreateMembraneOrientation(plugin, structureCell);
+        const colorTheme = HydrophobicityColorThemeProvider.name as any;
+        const preset = await PresetStructureRepresentations.auto.apply(ref, { ...params, theme: { globalName: colorTheme, focus: { name: colorTheme } } }, plugin);
+
+        return { components: preset.components, representations: { ...preset.representations, membraneOrientation } };
+    }
+});
+
+export function tryCreateMembraneOrientation(plugin: PluginContext, structure: StateObjectRef<PluginStateObject.Molecule.Structure>, params?: StateTransformer.Params<MembraneOrientation3D>, initialState?: Partial<StateTransform.State>) {
+    const state = plugin.state.data;
+    const membraneOrientation = state.build().to(structure)
+        .applyOrUpdateTagged('membrane-orientation-3d', MembraneOrientation3D, params, { state: initialState });
+    return membraneOrientation.commit({ revertOnError: true });
+}
--- a/src/extensions/anvil/prop.ts
+++ b/src/extensions/anvil/prop.ts
@@ -0,0 +1,82 @@
+/**
+ * Copyright (c) 2020 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * @author Sebastian Bittrich <sebastian.bittrich@rcsb.org>
+ * @author Alexander Rose <alexander.rose@weirdbyte.de>
+ */
+
+import { ParamDefinition as PD } from '../../mol-util/param-definition';
+import { Structure, StructureProperties, Unit } from '../../mol-model/structure';
+import { CustomPropertyDescriptor } from '../../mol-model/custom-property';
+import { ANVILParams, ANVILProps, computeANVIL, isInMembranePlane } from './algorithm';
+import { CustomStructureProperty } from '../../mol-model-props/common/custom-structure-property';
+import { CustomProperty } from '../../mol-model-props/common/custom-property';
+import { AccessibleSurfaceAreaProvider } from '../../mol-model-props/computed/accessible-surface-area';
+import { Vec3 } from '../../mol-math/linear-algebra';
+import { QuerySymbolRuntime } from '../../mol-script/runtime/query/base';
+import { CustomPropSymbol } from '../../mol-script/language/symbol';
+import { Type } from '../../mol-script/language/type';
+
+export const MembraneOrientationParams = {
+    ...ANVILParams
+};
+export type MembraneOrientationParams = typeof MembraneOrientationParams
+export type MembraneOrientationProps = PD.Values<MembraneOrientationParams>
+
+export { MembraneOrientation };
+
+interface MembraneOrientation {
+    // point in membrane boundary
+    readonly planePoint1: Vec3,
+    // point in opposite side of membrane boundary
+    readonly planePoint2: Vec3,
+    // normal vector of membrane layer
+    readonly normalVector: Vec3,
+    // the radius of the membrane layer
+    readonly radius: number,
+    readonly centroid: Vec3
+}
+
+namespace MembraneOrientation {
+    export enum Tag {
+        Representation = 'membrane-orientation-3d'
+    }
+
+    const pos = Vec3();
+    export const symbols = {
+        isTransmembrane: QuerySymbolRuntime.Dynamic(CustomPropSymbol('computed', 'membrane-orientation.is-transmembrane', Type.Bool),
+            ctx => {
+                const { unit, structure } = ctx.element;
+                const { x, y, z } = StructureProperties.atom;
+                if (!Unit.isAtomic(unit)) return 0;
+                const membraneOrientation = MembraneOrientationProvider.get(structure).value;
+                if (!membraneOrientation) return 0;
+                Vec3.set(pos, x(ctx.element), y(ctx.element), z(ctx.element));
+                const { normalVector, planePoint1, planePoint2 } = membraneOrientation!;
+                return isInMembranePlane(pos, normalVector, planePoint1, planePoint2);
+            })
+    };
+}
+
+export const MembraneOrientationProvider: CustomStructureProperty.Provider<MembraneOrientationParams, MembraneOrientation> = CustomStructureProperty.createProvider({
+    label: 'Membrane Orientation',
+    descriptor: CustomPropertyDescriptor({
+        name: 'anvil_computed_membrane_orientation',
+        symbols: MembraneOrientation.symbols,
+        // TODO `cifExport`
+    }),
+    type: 'root',
+    defaultParams: MembraneOrientationParams,
+    getParams: (data: Structure) => MembraneOrientationParams,
+    isApplicable: (data: Structure) => true,
+    obtain: async (ctx: CustomProperty.Context, data: Structure, props: Partial<MembraneOrientationProps>) => {
+        const p = { ...PD.getDefaultValues(MembraneOrientationParams), ...props };
+        return { value: await computeAnvil(ctx, data, p) };
+    }
+});
+
+async function computeAnvil(ctx: CustomProperty.Context, data: Structure, props: Partial<ANVILProps>): Promise<MembraneOrientation> {
+    await AccessibleSurfaceAreaProvider.attach(ctx, data);
+    const p = { ...PD.getDefaultValues(ANVILParams), ...props };
+    return await computeANVIL(data, p).runInContext(ctx.runtime);
+}
--- a/src/extensions/anvil/representation.ts
+++ b/src/extensions/anvil/representation.ts
@@ -0,0 +1,156 @@
+/**
+ * Copyright (c) 2020 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * @author Alexander Rose <alexander.rose@weirdbyte.de>
+ * @author Sebastian Bittrich <sebastian.bittrich@rcsb.org>
+ */
+
+import { ParamDefinition as PD } from '../../mol-util/param-definition';
+import { Vec3, Mat4 } from '../../mol-math/linear-algebra';
+import { Representation, RepresentationContext, RepresentationParamsGetter } from '../../mol-repr/representation';
+import { Structure } from '../../mol-model/structure';
+import { Spheres } from '../../mol-geo/geometry/spheres/spheres';
+import { StructureRepresentationProvider, StructureRepresentation, StructureRepresentationStateBuilder } from '../../mol-repr/structure/representation';
+import { MembraneOrientation } from './prop';
+import { ThemeRegistryContext } from '../../mol-theme/theme';
+import { ShapeRepresentation } from '../../mol-repr/shape/representation';
+import { Shape } from '../../mol-model/shape';
+import { RuntimeContext } from '../../mol-task';
+import { Lines } from '../../mol-geo/geometry/lines/lines';
+import { Mesh } from '../../mol-geo/geometry/mesh/mesh';
+import { LinesBuilder } from '../../mol-geo/geometry/lines/lines-builder';
+import { Circle } from '../../mol-geo/primitive/circle';
+import { transformPrimitive } from '../../mol-geo/primitive/primitive';
+import { MeshBuilder } from '../../mol-geo/geometry/mesh/mesh-builder';
+import { MembraneOrientationProvider } from './prop';
+import { MarkerActions } from '../../mol-util/marker-action';
+import { lociLabel } from '../../mol-theme/label';
+import { ColorNames } from '../../mol-util/color/names';
+import { CustomProperty } from '../../mol-model-props/common/custom-property';
+
+const SharedParams = {
+    color: PD.Color(ColorNames.lightgrey),
+    radiusFactor: PD.Numeric(0.8333, { min: 0.1, max: 3.0, step: 0.01 }, { description: 'Scale the radius of the membrane layer' })
+};
+
+const BilayerSpheresParams = {
+    ...Spheres.Params,
+    ...SharedParams,
+    sphereSize: PD.Numeric(1, { min: 0.1, max: 10, step: 0.1 }, { description: 'Size of spheres that represent membrane planes' }),
+    density: PD.Numeric(1, { min: 0.25, max: 10, step: 0.25 }, { description: 'Distance between spheres'})
+};
+export type BilayerSpheresParams = typeof BilayerSpheresParams
+export type BilayerSpheresProps = PD.Values<BilayerSpheresParams>
+
+const BilayerPlanesParams = {
+    ...Mesh.Params,
+    ...SharedParams,
+    sectorOpacity: PD.Numeric(0.5, { min: 0, max: 1, step: 0.01 }),
+};
+export type BilayerPlanesParams = typeof BilayerPlanesParams
+export type BilayerPlanesProps = PD.Values<BilayerPlanesParams>
+
+const BilayerRimsParams = {
+    ...Lines.Params,
+    ...SharedParams,
+    lineSizeAttenuation: PD.Boolean(true),
+    linesSize: PD.Numeric(0.3, { min: 0.01, max: 50, step: 0.01 }),
+    dashedLines: PD.Boolean(true),
+};
+export type BilayerRimsParams = typeof BilayerRimsParams
+export type BilayerRimsProps = PD.Values<BilayerRimsParams>
+
+const MembraneOrientationVisuals = {
+    'bilayer-planes': (ctx: RepresentationContext, getParams: RepresentationParamsGetter<MembraneOrientation, BilayerPlanesParams>) => ShapeRepresentation(getBilayerPlanes, Mesh.Utils, { modifyState: s => ({ ...s, markerActions: MarkerActions.Highlighting }), modifyProps: p => ({ ...p, alpha: p.sectorOpacity, ignoreLight: true, doubleSided: false }) }),
+    'bilayer-rims': (ctx: RepresentationContext, getParams: RepresentationParamsGetter<MembraneOrientation, BilayerRimsParams>) => ShapeRepresentation(getBilayerRims, Lines.Utils, { modifyState: s => ({ ...s, markerActions: MarkerActions.Highlighting }) })
+};
+
+export const MembraneOrientationParams = {
+    ...BilayerSpheresParams,
+    ...BilayerPlanesParams,
+    ...BilayerRimsParams,
+    visuals: PD.MultiSelect(['bilayer-planes', 'bilayer-rims'], PD.objectToOptions(MembraneOrientationVisuals)),
+};
+export type MembraneOrientationParams = typeof MembraneOrientationParams
+export type MembraneOrientationProps = PD.Values<MembraneOrientationParams>
+
+export function getMembraneOrientationParams(ctx: ThemeRegistryContext, structure: Structure) {
+    return PD.clone(MembraneOrientationParams);
+}
+
+export type MembraneOrientationRepresentation = StructureRepresentation<MembraneOrientationParams>
+export function MembraneOrientationRepresentation(ctx: RepresentationContext, getParams: RepresentationParamsGetter<Structure, MembraneOrientationParams>): MembraneOrientationRepresentation {
+    return Representation.createMulti('Membrane Orientation', ctx, getParams, StructureRepresentationStateBuilder, MembraneOrientationVisuals as unknown as Representation.Def<Structure, MembraneOrientationParams>);
+}
+
+export const MembraneOrientationRepresentationProvider = StructureRepresentationProvider({
+    name: 'membrane-orientation',
+    label: 'Membrane Orientation',
+    description: 'Displays a grid of points representing membrane layers.',
+    factory: MembraneOrientationRepresentation,
+    getParams: getMembraneOrientationParams,
+    defaultValues: PD.getDefaultValues(MembraneOrientationParams),
+    defaultColorTheme: { name: 'shape-group' },
+    defaultSizeTheme: { name: 'shape-group' },
+    isApplicable: (structure: Structure) => structure.elementCount > 0,
+    ensureCustomProperties: {
+        attach: (ctx: CustomProperty.Context, structure: Structure) => MembraneOrientationProvider.attach(ctx, structure, void 0, true),
+        detach: (data) => MembraneOrientationProvider.ref(data, false)
+    }
+});
+
+function membraneLabel(data: Structure) {
+    return `${lociLabel(Structure.Loci(data))} | Membrane Orientation`;
+}
+
+function getBilayerRims(ctx: RuntimeContext, data: Structure, props: BilayerRimsProps, shape?: Shape<Lines>): Shape<Lines> {
+    const { planePoint1: p1, planePoint2: p2, centroid, normalVector: normal, radius } = MembraneOrientationProvider.get(data).value!;
+    const scaledRadius = props.radiusFactor * radius;
+    const builder = LinesBuilder.create(128, 64, shape?.geometry);
+    getLayerCircle(builder, p1, centroid, normal, scaledRadius, props);
+    getLayerCircle(builder, p2, centroid, normal, scaledRadius, props);
+    return Shape.create('Bilayer rims', data, builder.getLines(), () => props.color, () => props.linesSize, () => membraneLabel(data));
+}
+
+function getLayerCircle(builder: LinesBuilder, p: Vec3, centroid: Vec3, normal: Vec3, radius: number, props: BilayerRimsProps, shape?: Shape<Lines>) {
+    const circle = getCircle(p, centroid, normal, radius);
+    const { indices, vertices } = circle;
+    for (let j = 0, jl = indices.length; j < jl; j += 3) {
+        if (props.dashedLines && j % 2 === 1) continue; // draw every other segment to get dashes
+        const start = indices[j] * 3;
+        const end = indices[j + 1] * 3;
+        const startX = vertices[start];
+        const startY = vertices[start + 1];
+        const startZ = vertices[start + 2];
+        const endX = vertices[end];
+        const endY = vertices[end + 1];
+        const endZ = vertices[end + 2];
+        builder.add(startX, startY, startZ, endX, endY, endZ, 0);
+    }
+}
+
+const tmpMat = Mat4();
+function getCircle(p: Vec3, centroid: Vec3, normal: Vec3, radius: number) {
+    Mat4.targetTo(tmpMat, p, centroid, normal);
+    Mat4.setTranslation(tmpMat, p);
+    Mat4.mul(tmpMat, tmpMat, Mat4.rotX90);
+
+    const circle = Circle({ radius, segments: 64 });
+    return transformPrimitive(circle, tmpMat);
+}
+
+function getBilayerPlanes(ctx: RuntimeContext, data: Structure, props: BilayerPlanesProps, shape?: Shape<Mesh>): Shape<Mesh> {
+    const { planePoint1: p1, planePoint2: p2, centroid, normalVector: normal, radius } = MembraneOrientationProvider.get(data).value!;
+    const state = MeshBuilder.createState(128, 64, shape && shape.geometry);
+    const scaledRadius = props.radiusFactor * radius;
+    getLayerPlane(state, p1, centroid, normal, scaledRadius);
+    getLayerPlane(state, p2, centroid, normal, scaledRadius);
+    return Shape.create('Bilayer planes', data, MeshBuilder.getMesh(state), () => props.color, () => 1, () => membraneLabel(data));
+}
+
+function getLayerPlane(state: MeshBuilder.State, p: Vec3, centroid: Vec3, normal: Vec3, radius: number) {
+    const circle = getCircle(p, centroid, normal, radius);
+    state.currentGroup = 0;
+    MeshBuilder.addPrimitive(state, Mat4.id, circle);
+    MeshBuilder.addPrimitiveFlipped(state, Mat4.id, circle);
+}
--- a/src/extensions/cellpack/color/generate.ts
+++ b/src/extensions/cellpack/color/generate.ts
@@ -0,0 +1,95 @@
+/**
+ * Copyright (c) 2020-2021 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * @author Alexander Rose <alexander.rose@weirdbyte.de>
+ */
+
+import { ThemeDataContext } from '../../../mol-theme/theme';
+import { ParamDefinition as PD } from '../../../mol-util/param-definition';
+import { Color } from '../../../mol-util/color';
+import { getPalette } from '../../../mol-util/color/palette';
+import { ColorTheme, LocationColor } from '../../../mol-theme/color';
+import { ScaleLegend, TableLegend } from '../../../mol-util/legend';
+import { StructureElement, Bond, Model } from '../../../mol-model/structure';
+import { Location } from '../../../mol-model/location';
+import { CellPackInfoProvider } from '../property';
+import { distinctColors } from '../../../mol-util/color/distinct';
+import { Hcl } from '../../../mol-util/color/spaces/hcl';
+
+const DefaultColor = Color(0xCCCCCC);
+const Description = 'Gives every model in a CellPack packing a unique generated color similar to other models in the packing.';
+
+export const CellPackGenerateColorThemeParams = {};
+export type CellPackGenerateColorThemeParams = typeof CellPackGenerateColorThemeParams
+export function getCellPackGenerateColorThemeParams(ctx: ThemeDataContext) {
+    return CellPackGenerateColorThemeParams; // TODO return copy
+}
+
+export function CellPackGenerateColorTheme(ctx: ThemeDataContext, props: PD.Values<CellPackGenerateColorThemeParams>): ColorTheme<CellPackGenerateColorThemeParams> {
+    let color: LocationColor;
+    let legend: ScaleLegend | TableLegend | undefined;
+
+    const info = ctx.structure && CellPackInfoProvider.get(ctx.structure).value;
+
+    if (ctx.structure && info) {
+        const colors = distinctColors(info.packingsCount);
+        let hcl = Hcl.fromColor(Hcl(), colors[info.packingIndex]);
+
+        const hue = [Math.max(0, hcl[0] - 35), Math.min(360, hcl[0] + 35)] as [number, number];
+
+        const { models } = ctx.structure.root;
+
+        let size = 0;
+        for (const m of models) size = Math.max(size, Model.TrajectoryInfo.get(m).size);
+
+        const palette = getPalette(size, { palette: {
+            name: 'generate',
+            params: {
+                hue, chroma: [30, 80], luminance: [15, 85],
+                clusteringStepCount: 50, minSampleCount: 800, maxCount: 75
+            }
+        }}, { minLabel: 'Min', maxLabel: 'Max' });
+        legend = palette.legend;
+        const modelColor = new Map<number, Color>();
+        for (let i = 0, il = models.length; i < il; ++i) {
+            const idx = Model.TrajectoryInfo.get(models[i]).index;
+            modelColor.set(Model.TrajectoryInfo.get(models[i]).index, palette.color(idx));
+        }
+
+        color = (location: Location): Color => {
+            if (StructureElement.Location.is(location)) {
+                return modelColor.get(Model.TrajectoryInfo.get(location.unit.model).index)!;
+            } else if (Bond.isLocation(location)) {
+                return modelColor.get(Model.TrajectoryInfo.get(location.aUnit.model).index)!;
+            }
+            return DefaultColor;
+        };
+    } else {
+        color = () => DefaultColor;
+    }
+
+    return {
+        factory: CellPackGenerateColorTheme,
+        granularity: 'instance',
+        color,
+        props,
+        description: Description,
+        legend
+    };
+}
+
+export const CellPackGenerateColorThemeProvider: ColorTheme.Provider<CellPackGenerateColorThemeParams, 'cellpack-generate'> = {
+    name: 'cellpack-generate',
+    label: 'CellPack Generate',
+    category: ColorTheme.Category.Chain,
+    factory: CellPackGenerateColorTheme,
+    getParams: getCellPackGenerateColorThemeParams,
+    defaultValues: PD.getDefaultValues(CellPackGenerateColorThemeParams),
+    isApplicable: (ctx: ThemeDataContext) => {
+        return (
+            !!ctx.structure && ctx.structure.elementCount > 0 &&
+            !!CellPackInfoProvider.get(ctx.structure).value
+        );
+    }
+};
+
--- a/src/extensions/cellpack/color/provided.ts
+++ b/src/extensions/cellpack/color/provided.ts
@@ -0,0 +1,75 @@
+/**
+ * Copyright (c) 2020 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * @author Alexander Rose <alexander.rose@weirdbyte.de>
+ */
+
+import { ThemeDataContext } from '../../../mol-theme/theme';
+import { ParamDefinition as PD } from '../../../mol-util/param-definition';
+import { Color } from '../../../mol-util/color';
+import { ColorTheme, LocationColor } from '../../../mol-theme/color';
+import { ScaleLegend, TableLegend } from '../../../mol-util/legend';
+import { StructureElement, Model, Bond } from '../../../mol-model/structure';
+import { Location } from '../../../mol-model/location';
+import { CellPackInfoProvider } from '../property';
+
+const DefaultColor = Color(0xCCCCCC);
+const Description = 'Gives every model in a CellPack the color provied in the packing data.';
+
+export const CellPackProvidedColorThemeParams = {};
+export type CellPackProvidedColorThemeParams = typeof CellPackProvidedColorThemeParams
+export function getCellPackProvidedColorThemeParams(ctx: ThemeDataContext) {
+    return CellPackProvidedColorThemeParams; // TODO return copy
+}
+
+export function CellPackProvidedColorTheme(ctx: ThemeDataContext, props: PD.Values<CellPackProvidedColorThemeParams>): ColorTheme<CellPackProvidedColorThemeParams> {
+    let color: LocationColor;
+    let legend: ScaleLegend | TableLegend | undefined;
+
+    const info = ctx.structure && CellPackInfoProvider.get(ctx.structure).value;
+
+    if (ctx.structure && info?.colors) {
+        const { models } = ctx.structure.root;
+        const modelColor = new Map<number, Color>();
+        for (let i = 0, il = models.length; i < il; ++i) {
+            const idx = Model.TrajectoryInfo.get(models[i]).index;
+            modelColor.set(Model.TrajectoryInfo.get(models[i]).index, info.colors[idx]);
+        }
+
+        color = (location: Location): Color => {
+            if (StructureElement.Location.is(location)) {
+                return modelColor.get(Model.TrajectoryInfo.get(location.unit.model).index)!;
+            } else if (Bond.isLocation(location)) {
+                return modelColor.get(Model.TrajectoryInfo.get(location.aUnit.model).index)!;
+            }
+            return DefaultColor;
+        };
+    } else {
+        color = () => DefaultColor;
+    }
+
+    return {
+        factory: CellPackProvidedColorTheme,
+        granularity: 'instance',
+        color,
+        props,
+        description: Description,
+        legend
+    };
+}
+
+export const CellPackProvidedColorThemeProvider: ColorTheme.Provider<CellPackProvidedColorThemeParams, 'cellpack-provided'> = {
+    name: 'cellpack-provided',
+    label: 'CellPack Provided',
+    category: ColorTheme.Category.Chain,
+    factory: CellPackProvidedColorTheme,
+    getParams: getCellPackProvidedColorThemeParams,
+    defaultValues: PD.getDefaultValues(CellPackProvidedColorThemeParams),
+    isApplicable: (ctx: ThemeDataContext) => {
+        return (
+            !!ctx.structure && ctx.structure.elementCount > 0 &&
+            Model.TrajectoryInfo.get(ctx.structure.models[0]).size > 1 &&
+            !!CellPackInfoProvider.get(ctx.structure).value?.colors
+        );
+    }
+};
--- a/src/extensions/cellpack/curve.ts
+++ b/src/extensions/cellpack/curve.ts
@@ -0,0 +1,229 @@
+/**
+ * Copyright (c) 2019 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * @author Ludovic Autin <autin@scripps.edu>
+ * @author Alexander Rose <alexander.rose@weirdbyte.de>
+ */
+
+import { Vec3, Quat, Mat4 } from '../../mol-math/linear-algebra';
+import { NumberArray } from '../../mol-util/type-helpers';
+
+interface Frame {
+    t: Vec3,
+    r: Vec3,
+    s: Vec3,
+}
+
+const a0Tmp = Vec3();
+const a1Tmp = Vec3();
+const a2Tmp = Vec3();
+const a3Tmp = Vec3();
+function CubicInterpolate(out: Vec3, y0: Vec3, y1: Vec3, y2: Vec3, y3: Vec3, mu: number): Vec3 {
+    const mu2 = mu * mu;
+    Vec3.sub(a0Tmp, y3, y2);
+    Vec3.sub(a0Tmp, a0Tmp, y0);
+    Vec3.add(a0Tmp, a0Tmp, y1);
+
+    Vec3.sub(a1Tmp, y0, y1);
+    Vec3.sub(a1Tmp, a1Tmp, a0Tmp);
+
+    Vec3.sub(a2Tmp, y2, y0);
+
+    Vec3.copy(a3Tmp, y1);
+
+    out[0] = a0Tmp[0] * mu * mu2 + a1Tmp[0] * mu2 + a2Tmp[0] * mu + a3Tmp[0];
+    out[1] = a0Tmp[1] * mu * mu2 + a1Tmp[1] * mu2 + a2Tmp[1] * mu + a3Tmp[1];
+    out[2] = a0Tmp[2] * mu * mu2 + a1Tmp[2] * mu2 + a2Tmp[2] * mu + a3Tmp[2];
+
+    return out;
+}
+
+const cp0 = Vec3();
+const cp1 = Vec3();
+const cp2 = Vec3();
+const cp3 = Vec3();
+const currentPosition = Vec3();
+function ResampleControlPoints(points: NumberArray, segmentLength: number) {
+    const nP = points.length / 3;
+    // insert a point at the end and at the begining
+    // controlPoints.Insert(0, controlPoints[0] + (controlPoints[0] - controlPoints[1]) / 2.0f);
+    // controlPoints.Add(controlPoints[nP - 1] + (controlPoints[nP - 1] - controlPoints[nP - 2]) / 2.0f);
+
+    let resampledControlPoints: Vec3[] = [];
+    // resampledControlPoints.Add(controlPoints[0]);
+    // resampledControlPoints.Add(controlPoints[1]);
+
+    let idx = 1;
+    // const currentPosition = Vec3.create(points[idx * 3], points[idx * 3 + 1], points[idx * 3 + 2])
+    Vec3.fromArray(currentPosition, points, idx * 3);
+
+    let lerpValue = 0.0;
+
+    // Normalize the distance between control points
+    while (true) {
+        if (idx + 2 >= nP) break;
+        Vec3.fromArray(cp0, points, (idx - 1) * 3);
+        Vec3.fromArray(cp1, points, idx * 3);
+        Vec3.fromArray(cp2, points, (idx + 1) * 3);
+        Vec3.fromArray(cp3, points, (idx + 2) * 3);
+        // const cp0 = Vec3.create(points[(idx-1)*3], points[(idx-1)*3+1], points[(idx-1)*3+2]) // controlPoints[currentPointId - 1];
+        // const cp1 = Vec3.create(points[idx*3], points[idx*3+1], points[idx*3+2]) // controlPoints[currentPointId];
+        // const cp2 = Vec3.create(points[(idx+1)*3], points[(idx+1)*3+1], points[(idx+1)*3+2]) // controlPoints[currentPointId + 1];
+        // const cp3 = Vec3.create(points[(idx+2)*3], points[(idx+2)*3+1], points[(idx+2)*3+2]); // controlPoints[currentPointId + 2];
+        let found = false;
+        for (; lerpValue <= 1; lerpValue += 0.01) {
+            // lerp?slerp
+            // let candidate:Vec3 = Vec3.lerp(Vec3.zero(), cp0, cp1, lerpValue);
+            // const candidate:Vec3 = Vec3.bezier(Vec3.zero(), cp0, cp1, cp2, cp3, lerpValue);
+            const candidate = CubicInterpolate(Vec3(), cp0, cp1, cp2, cp3, lerpValue);
+            const d = Vec3.distance(currentPosition, candidate);
+            if (d > segmentLength) {
+                resampledControlPoints.push(candidate);
+                Vec3.copy(currentPosition, candidate);
+                found = true;
+                break;
+            }
+        }
+        if (!found) {
+            lerpValue = 0;
+            idx += 1;
+        }
+    }
+    return resampledControlPoints;
+}
+
+
+const prevV = Vec3();
+const tmpV1 = Vec3();
+const tmpV2 = Vec3();
+const tmpV3 = Vec3();
+
+// easier to align to theses normals
+function GetSmoothNormals(points: Vec3[]) {
+    const nP: number = points.length;
+    const smoothNormals: Vec3[] = [];
+    if (points.length < 3) {
+        for (let i = 0; i < points.length; ++i)
+            smoothNormals.push(Vec3.normalize(Vec3(), points[i]));
+        return smoothNormals;
+    }
+    let p0 = points[0];
+    let p1 = points[1];
+    let p2 = points[2];
+    const p21 = Vec3.sub(tmpV1, p2, p1);
+    const p01 =  Vec3.sub(tmpV2, p0, p1);
+    const p0121 = Vec3.cross(tmpV3, p01, p21);
+    Vec3.normalize(prevV, p0121);
+    smoothNormals.push(Vec3.clone(prevV));
+    for (let i = 1; i < points.length - 1; ++i) {
+        p0 = points[i - 1];
+        p1 = points[i];
+        p2 = points[i + 1];
+        const t = Vec3.normalize(tmpV1, Vec3.sub(tmpV1, p2, p0));
+        const b = Vec3.normalize(tmpV2, Vec3.cross(tmpV2, t, prevV));
+        const n = Vec3.normalize(Vec3(), Vec3.cross(tmpV3, t, b));
+        Vec3.negate(n, n);
+        Vec3.copy(prevV, n);
+        smoothNormals.push(n);
+    }
+    const last = Vec3();
+    Vec3.normalize(last, Vec3.cross(last,
+        Vec3.sub(tmpV1, points[nP - 3], points[nP - 2]),
+        Vec3.sub(tmpV2, points[nP - 2], points[nP - 1]))
+    );
+    smoothNormals.push(last);
+    return smoothNormals;
+}
+
+const frameTmpV1 = Vec3();
+const frameTmpV2 = Vec3();
+const frameTmpV3 = Vec3();
+
+function getFrame(reference: Vec3, tangent: Vec3) {
+    const t = Vec3.normalize(Vec3(), tangent);
+    // make reference vector orthogonal to tangent
+    const proj_r_to_t = Vec3.scale(
+        frameTmpV1, tangent, Vec3.dot(reference, tangent) / Vec3.dot(tangent, tangent)
+    );
+    const r = Vec3.normalize(Vec3(), Vec3.sub(frameTmpV2, reference, proj_r_to_t));
+    // make bitangent vector orthogonal to the others
+    const s = Vec3.normalize(Vec3(), Vec3.cross(frameTmpV3, t, r));
+    return { t, r, s };
+}
+
+const mfTmpV1 = Vec3();
+const mfTmpV2 = Vec3();
+const mfTmpV3 = Vec3();
+const mfTmpV4 = Vec3();
+const mfTmpV5 = Vec3();
+const mfTmpV6 = Vec3();
+const mfTmpV7 = Vec3();
+const mfTmpV8 = Vec3();
+const mfTmpV9 = Vec3();
+
+// easier to align to theses normals
+// https://github.com/bzamecnik/gpg/blob/master/rotation-minimizing-frame/rmf.py
+function GetMiniFrame(points: Vec3[], normals: Vec3[]) {
+    const frames: Frame[] = [];
+    const t0 = Vec3.normalize(mfTmpV1, Vec3.sub(mfTmpV1, points[1], points[0]));
+    frames.push(getFrame(normals[0], t0));
+
+    for (let i = 0; i < points.length - 2; ++i) {
+        const t2 = Vec3.normalize(mfTmpV1, Vec3.sub(mfTmpV1, points[i + 2], points[i + 1]));
+        const v1 = Vec3.sub(mfTmpV2, points[i + 1], points[i]); // this is tangeant
+        const c1 = Vec3.dot(v1, v1);
+        // compute r_i^L = R_1 * r_i
+        const v1r = Vec3.scale(mfTmpV3, v1, (2.0 / c1) * Vec3.dot(v1, frames[i].r));
+        const ref_L_i = Vec3.sub(mfTmpV4, frames[i].r, v1r);
+        // compute t_i^L = R_1 * t_i
+        const v1t = Vec3.scale(mfTmpV5, v1, (2.0 / c1) * Vec3.dot(v1, frames[i].t));
+        const tan_L_i = Vec3.sub(mfTmpV6, frames[i].t, v1t);
+        // # compute reflection vector of R_2
+        const v2 =  Vec3.sub(mfTmpV7, t2, tan_L_i);
+        const c2 = Vec3.dot(v2, v2);
+        // compute r_(i+1) = R_2 * r_i^L
+        const v2l = Vec3.scale(mfTmpV8, v1, (2.0 / c2) * Vec3.dot(v2, ref_L_i));
+        const ref_next = Vec3.sub(mfTmpV9, ref_L_i, v2l); // ref_L_i - (2 / c2) * v2.dot(ref_L_i) * v2
+        frames.push(getFrame(ref_next, t2)); // frames.append(Frame(ref_next, tangents[i+1]))
+    }
+    return frames;
+}
+
+const rpTmpVec1 = Vec3();
+
+export function getMatFromResamplePoints(points: NumberArray, segmentLength: number, resample: boolean) {
+    let new_points: Vec3[] = [];
+    if (resample) new_points = ResampleControlPoints(points, segmentLength);
+    else {
+        for (let idx = 0; idx < points.length / 3; ++idx){
+            new_points.push(Vec3.fromArray(Vec3.zero(), points, idx * 3));
+        }
+    }
+    const npoints = new_points.length;
+    const new_normal = GetSmoothNormals(new_points);
+    const frames = GetMiniFrame(new_points, new_normal);
+    const limit = npoints;
+    const transforms: Mat4[] = [];
+    const pti = Vec3.copy(rpTmpVec1, new_points[0]);
+    for (let i = 0; i < npoints - 2; ++i) {
+        const pti1: Vec3 = new_points[i + 1]; // Vec3.create(points[(i+1)*3],points[(i+1)*3+1],points[(i+1)*3+2]);
+        const d = Vec3.distance(pti, pti1);
+        if (d >= segmentLength) {
+            // use twist or random?
+            const quat = Quat.rotationTo(Quat.zero(), Vec3.create(0, 0, 1), frames[i].t); // Quat.rotationTo(Quat.zero(), Vec3.create(0,0,1),new_normal[i]);//Quat.rotationTo(Quat.zero(), Vec3.create(0,0,1),direction);new_normal
+            const rq = Quat.setAxisAngle(Quat.zero(), frames[i].t, Math.random() * 3.60 ); // Quat.setAxisAngle(Quat.zero(),direction, Math.random()*3.60 );//Quat.identity();//
+            const m = Mat4.fromQuat(Mat4.zero(), Quat.multiply(Quat.zero(), rq, quat)); // Mat4.fromQuat(Mat4.zero(),Quat.multiply(Quat.zero(),quat1,quat2));//Mat4.fromQuat(Mat4.zero(),quat);//Mat4.identity();//Mat4.fromQuat(Mat4.zero(),Quat.multiply(Quat.zero(),rq,quat));
+            // let pos:Vec3 = Vec3.add(Vec3.zero(),pti1,pti)
+            // pos = Vec3.scale(pos,pos,1.0/2.0);
+            // Vec3.makeRotation(Mat4.zero(),Vec3.create(0,0,1),frames[i].t);//
+            Mat4.setTranslation(m, pti1);
+            // let m2:Mat4 = GetTubePropertiesMatrix(pti,pti1);
+            // let q:Quat = Quat.rotationTo(Quat.zero(), Vec3.create(0,1,0),Vec3.create(0,0,1))
+            // m2=Mat4.mul(Mat4.identity(),Mat4.fromQuat(Mat4.zero(),q),m2);
+            transforms.push(m);
+            Vec3.copy(pti, pti1);
+        }
+        if (transforms.length >= limit) break;
+    }
+    return transforms;
+}
--- a/src/extensions/cellpack/data.ts
+++ b/src/extensions/cellpack/data.ts
@@ -0,0 +1,84 @@
+/**
+ * Copyright (c) 2019 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * @author Alexander Rose <alexander.rose@weirdbyte.de>
+ */
+
+import { Vec3, Quat } from '../../mol-math/linear-algebra';
+
+export interface CellPack {
+    cell: Cell
+    packings: CellPacking[]
+}
+
+export interface CellPacking {
+    name: string,
+    location: 'surface' | 'interior' | 'cytoplasme',
+    ingredients: Packing['ingredients']
+}
+
+//
+
+export interface Cell {
+    recipe: Recipe
+    cytoplasme?: Packing
+    compartments?: { [key: string]: Compartment }
+}
+
+export interface Recipe {
+    setupfile: string
+    paths: [string, string][] // [name: string, path: string][]
+    version: string
+    name: string
+}
+
+export interface Compartment {
+    surface?: Packing
+    interior?: Packing
+}
+
+export interface Packing {
+    ingredients: { [key: string]: Ingredient }
+}
+
+export interface Positions {
+    coords?: Vec3[];
+}
+
+export interface Radii {
+    radii?: number[];
+}
+
+export interface Ingredient {
+    source: IngredientSource;
+    results: [Vec3, Quat][];
+    name: string;
+    /** Vec3[]];CoarseGraind Beads coordinates LOD */
+    positions?: [Positions];
+    /** number[]];CoarseGraind Beads radii LOD */
+    radii?: [Radii];
+    /** Number of `curveX` properties in the object where `X` is a 0-indexed number */
+    nbCurve?: number;
+    uLength?: number;
+    /** Curve properties are Vec3[] but that is not expressable in TypeScript */
+    [curveX: string]: unknown;
+    /** the orientation in the membrane */
+    principalAxis?: Vec3;
+    /** offset along membrane */
+    offset?: Vec3;
+    ingtype?: string;
+    color?: Vec3;
+    confidence?: number;
+}
+
+export interface IngredientSource {
+    pdb: string;
+    bu?: string;  /** biological unit e.g AU,BU1,etc.. */
+    selection?: string; /** NGL selection or :A or :B etc.. */
+    model?: string;     /** model number e.g 0,1,2... */
+    transform: {
+        center: boolean;
+        translate?: Vec3;
+    };
+    biomt?: boolean;
+}
--- a/src/extensions/cellpack/index.ts
+++ b/src/extensions/cellpack/index.ts
@@ -0,0 +1,32 @@
+/**
+ * Copyright (c) 2020 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * @author Alexander Rose <alexander.rose@weirdbyte.de>
+ */
+
+import { PluginBehavior } from '../../mol-plugin/behavior';
+import { LoadCellPackModel } from './model';
+import { CellPackGenerateColorThemeProvider } from './color/generate';
+import { CellPackProvidedColorThemeProvider } from './color/provided';
+
+export const CellPack = PluginBehavior.create<{ autoAttach: boolean, showTooltip: boolean }>({
+    name: 'cellpack',
+    category: 'custom-props',
+    display: {
+        name: 'CellPack',
+        description: 'CellPack Model Loading and Viewing.'
+    },
+    ctor: class extends PluginBehavior.Handler<{ autoAttach: boolean, showTooltip: boolean }> {
+        register(): void {
+            this.ctx.state.data.actions.add(LoadCellPackModel);
+            this.ctx.representation.structure.themes.colorThemeRegistry.add(CellPackGenerateColorThemeProvider);
+            this.ctx.representation.structure.themes.colorThemeRegistry.add(CellPackProvidedColorThemeProvider);
+        }
+
+        unregister() {
+            this.ctx.state.data.actions.remove(LoadCellPackModel);
+            this.ctx.representation.structure.themes.colorThemeRegistry.remove(CellPackGenerateColorThemeProvider);
+            this.ctx.representation.structure.themes.colorThemeRegistry.remove(CellPackProvidedColorThemeProvider);
+        }
+    }
+});
--- a/src/extensions/cellpack/model.ts
+++ b/src/extensions/cellpack/model.ts
@@ -0,0 +1,584 @@
+/**
+ * Copyright (c) 2019-2021 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * @author Alexander Rose <alexander.rose@weirdbyte.de>
+ */
+
+import { StateAction, StateBuilder, StateTransformer, State } from '../../mol-state';
+import { PluginContext } from '../../mol-plugin/context';
+import { PluginStateObject as PSO } from '../../mol-plugin-state/objects';
+import { ParamDefinition as PD } from '../../mol-util/param-definition';
+import { Ingredient, IngredientSource, CellPacking } from './data';
+import { getFromPdb, getFromCellPackDB, IngredientFiles, parseCif, parsePDBfile, getStructureMean, getFromOPM } from './util';
+import { Model, Structure, StructureSymmetry, StructureSelection, QueryContext, Unit, Trajectory } from '../../mol-model/structure';
+import { trajectoryFromMmCIF, MmcifFormat } from '../../mol-model-formats/structure/mmcif';
+import { trajectoryFromPDB } from '../../mol-model-formats/structure/pdb';
+import { Mat4, Vec3, Quat } from '../../mol-math/linear-algebra';
+import { SymmetryOperator } from '../../mol-math/geometry';
+import { Task, RuntimeContext } from '../../mol-task';
+import { StateTransforms } from '../../mol-plugin-state/transforms';
+import { ParseCellPack, StructureFromCellpack, DefaultCellPackBaseUrl, StructureFromAssemblies } from './state';
+import { MolScriptBuilder as MS } from '../../mol-script/language/builder';
+import { getMatFromResamplePoints } from './curve';
+import { compile } from '../../mol-script/runtime/query/compiler';
+import { CifCategory, CifField } from '../../mol-io/reader/cif';
+import { mmCIF_Schema } from '../../mol-io/reader/cif/schema/mmcif';
+import { Column } from '../../mol-data/db';
+import { createModels } from '../../mol-model-formats/structure/basic/parser';
+import { CellpackPackingPreset, CellpackMembranePreset } from './preset';
+import { Asset } from '../../mol-util/assets';
+import { Color } from '../../mol-util/color';
+import { readFromFile } from '../../mol-util/data-source';
+import { objectForEach } from '../../mol-util/object';
+
+function getCellPackModelUrl(fileName: string, baseUrl: string) {
+    return `${baseUrl}/results/${fileName}`;
+}
+
+class TrajectoryCache {
+    private map = new Map<string, Trajectory>();
+    set(id: string, trajectory: Trajectory) { this.map.set(id, trajectory); }
+    get(id: string) { return this.map.get(id); }
+}
+
+async function getModel(plugin: PluginContext, id: string, ingredient: Ingredient, baseUrl: string, trajCache: TrajectoryCache, file?: Asset.File) {
+    const assetManager = plugin.managers.asset;
+    const modelIndex = (ingredient.source.model) ? parseInt(ingredient.source.model) : 0;
+    const surface = (ingredient.ingtype) ? (ingredient.ingtype === 'transmembrane') : false;
+    let trajectory = trajCache.get(id);
+    let assets: Asset.Wrapper[] = [];
+    if (!trajectory) {
+        if (file) {
+            if (file.name.endsWith('.cif')) {
+                const text = await plugin.runTask(assetManager.resolve(file, 'string'));
+                assets.push(text);
+                const cif = (await parseCif(plugin, text.data)).blocks[0];
+                trajectory = await plugin.runTask(trajectoryFromMmCIF(cif));
+            } else if (file.name.endsWith('.bcif')) {
+                const binary = await plugin.runTask(assetManager.resolve(file, 'binary'));
+                assets.push(binary);
+                const cif = (await parseCif(plugin, binary.data)).blocks[0];
+                trajectory = await plugin.runTask(trajectoryFromMmCIF(cif));
+            } else if (file.name.endsWith('.pdb')) {
+                const text = await plugin.runTask(assetManager.resolve(file, 'string'));
+                assets.push(text);
+                const pdb = await parsePDBfile(plugin, text.data, id);
+                trajectory = await plugin.runTask(trajectoryFromPDB(pdb));
+            } else {
+                throw new Error(`unsupported file type '${file.name}'`);
+            }
+        } else if (id.match(/^[1-9][a-zA-Z0-9]{3,3}$/i)) {
+            if (surface){
+                try {
+                    const data = await getFromOPM(plugin, id, assetManager);
+                    assets.push(data.asset);
+                    trajectory = await plugin.runTask(trajectoryFromPDB(data.pdb));
+                } catch (e) {
+                    // fallback to getFromPdb
+                    // console.error(e);
+                    const { mmcif, asset } = await getFromPdb(plugin, id, assetManager);
+                    assets.push(asset);
+                    trajectory = await plugin.runTask(trajectoryFromMmCIF(mmcif));
+                }
+            } else {
+                const { mmcif, asset } = await getFromPdb(plugin, id, assetManager);
+                assets.push(asset);
+                trajectory = await plugin.runTask(trajectoryFromMmCIF(mmcif));
+            }
+        } else {
+            const data = await getFromCellPackDB(plugin, id, baseUrl, assetManager);
+            assets.push(data.asset);
+            if ('pdb' in data) {
+                trajectory = await plugin.runTask(trajectoryFromPDB(data.pdb));
+            } else {
+                trajectory = await plugin.runTask(trajectoryFromMmCIF(data.mmcif));
+            }
+        }
+        trajCache.set(id, trajectory!);
+    }
+    const model = await plugin.resolveTask(trajectory?.getFrameAtIndex(modelIndex)!);
+    return { model, assets };
+}
+
+async function getStructure(plugin: PluginContext, model: Model, source: IngredientSource, props: { assembly?: string } = {}) {
+    let structure = Structure.ofModel(model);
+    const { assembly } = props;
+
+    if (assembly) {
+        structure = await plugin.runTask(StructureSymmetry.buildAssembly(structure, assembly));
+    }
+    let query;
+    if (source.selection){
+        const asymIds: string[] = source.selection.replace(' ', '').replace(':', '').split('or');
+        query = MS.struct.modifier.union([
+            MS.struct.generator.atomGroups({
+                'entity-test': MS.core.rel.eq([MS.ammp('entityType'), 'polymer']),
+                'chain-test': MS.core.set.has([MS.set(...asymIds), MS.ammp('auth_asym_id')])
+            })
+        ]);
+    } else {
+        query = MS.struct.modifier.union([
+            MS.struct.generator.atomGroups({
+                'entity-test': MS.core.rel.eq([MS.ammp('entityType'), 'polymer'])
+            })
+        ]);
+    }
+
+    const compiled = compile<StructureSelection>(query);
+    const result = compiled(new QueryContext(structure));
+    structure = StructureSelection.unionStructure(result);
+
+    return structure;
+}
+
+function getTransformLegacy(trans: Vec3, rot: Quat) {
+    const q: Quat = Quat.create(-rot[3], rot[0], rot[1], rot[2]);
+    const m: Mat4 = Mat4.fromQuat(Mat4.zero(), q);
+    Mat4.transpose(m, m);
+    Mat4.scale(m, m, Vec3.create(-1.0, 1.0, -1.0));
+    Mat4.setTranslation(m, trans);
+    return m;
+}
+
+function getTransform(trans: Vec3, rot: Quat) {
+    const q: Quat = Quat.create(rot[0], rot[1], rot[2], rot[3]);
+    const m: Mat4 = Mat4.fromQuat(Mat4.zero(), q);
+    const p: Vec3 = Vec3.create(trans[0], trans[1], trans[2]);
+    Mat4.setTranslation(m, p);
+    return m;
+}
+
+function getResultTransforms(results: Ingredient['results'], legacy: boolean) {
+    if (legacy) return results.map((r: Ingredient['results'][0]) => getTransformLegacy(r[0], r[1]));
+    else return results.map((r: Ingredient['results'][0]) => getTransform(r[0], r[1]));
+}
+
+function getCurveTransforms(ingredient: Ingredient) {
+    const n = ingredient.nbCurve || 0;
+    const instances: Mat4[] = [];
+    let segmentLength = 3.4;
+    if (ingredient.uLength){
+        segmentLength = ingredient.uLength;
+    } else if (ingredient.radii){
+        segmentLength = ingredient.radii[0].radii
+            ? ingredient.radii[0].radii[0] * 2.0
+            : 3.4;
+    }
+    let resampling: boolean = false;
+    for (let i = 0; i < n; ++i) {
+        const cname = `curve${i}`;
+        if (!(cname in ingredient)) {
+            // console.warn(`Expected '${cname}' in ingredient`)
+            continue;
+        }
+        const _points = ingredient[cname] as Vec3[];
+        if (_points.length <= 2) {
+            // TODO handle curve with 2 or less points
+            continue;
+        }
+        // test for resampling
+        let distance: number = Vec3.distance(_points[0], _points[1]);
+        if (distance >= segmentLength + 2.0) {
+            console.info(distance);
+            resampling = true;
+        }
+        const points = new Float32Array(_points.length * 3);
+        for (let i = 0, il = _points.length; i < il; ++i) Vec3.toArray(_points[i], points, i * 3);
+        const newInstances = getMatFromResamplePoints(points, segmentLength, resampling);
+        instances.push(...newInstances);
+    }
+    return instances;
+}
+
+function getAssembly(transforms: Mat4[], structure: Structure) {
+    const builder = Structure.Builder();
+    const { units } = structure;
+
+    for (let i = 0, il = transforms.length; i < il; ++i) {
+        const id = `${i + 1}`;
+        const op = SymmetryOperator.create(id, transforms[i], { assembly: { id, operId: i, operList: [ id ] } });
+        for (const unit of units) {
+            builder.addWithOperator(unit, op);
+        }
+    }
+
+    return builder.getStructure();
+}
+
+function getCifCurve(name: string, transforms: Mat4[], model: Model) {
+    if (!MmcifFormat.is(model.sourceData)) throw new Error('mmcif source data needed');
+
+    const { db } = model.sourceData.data;
+    const d = db.atom_site;
+    const n = d._rowCount;
+    const rowCount = n * transforms.length;
+
+    const { offsets, count } = model.atomicHierarchy.chainAtomSegments;
+
+    const x = d.Cartn_x.toArray();
+    const y = d.Cartn_y.toArray();
+    const z = d.Cartn_z.toArray();
+
+    const Cartn_x = new Float32Array(rowCount);
+    const Cartn_y = new Float32Array(rowCount);
+    const Cartn_z = new Float32Array(rowCount);
+    const map = new Uint32Array(rowCount);
+    const seq = new Int32Array(rowCount);
+    let offset = 0;
+    for (let c = 0; c < count; ++c) {
+        const cStart = offsets[c];
+        const cEnd = offsets[c + 1];
+        const cLength = cEnd - cStart;
+        for (let t = 0, tl = transforms.length; t < tl; ++t) {
+            const m = transforms[t];
+            for (let j = cStart; j < cEnd; ++j) {
+                const i = offset + j - cStart;
+                const xj = x[j], yj = y[j], zj = z[j];
+                Cartn_x[i] = m[0] * xj + m[4] * yj + m[8] * zj + m[12];
+                Cartn_y[i] = m[1] * xj + m[5] * yj + m[9] * zj + m[13];
+                Cartn_z[i] = m[2] * xj + m[6] * yj + m[10] * zj + m[14];
+                map[i] = j;
+                seq[i] = t + 1;
+            }
+            offset += cLength;
+        }
+    }
+
+    function multColumn<T>(column: Column<T>) {
+        const array = column.toArray();
+        return Column.ofLambda({
+            value: row => array[map[row]],
+            areValuesEqual: (rowA, rowB) => map[rowA] === map[rowB] || array[map[rowA]] === array[map[rowB]],
+            rowCount, schema: column.schema
+        });
+    }
+
+    const _atom_site: CifCategory.SomeFields<mmCIF_Schema['atom_site']> = {
+        auth_asym_id: CifField.ofColumn(multColumn(d.auth_asym_id)),
+        auth_atom_id: CifField.ofColumn(multColumn(d.auth_atom_id)),
+        auth_comp_id: CifField.ofColumn(multColumn(d.auth_comp_id)),
+        auth_seq_id: CifField.ofNumbers(seq),
+
+        B_iso_or_equiv: CifField.ofColumn(Column.ofConst(0, rowCount, Column.Schema.float)),
+        Cartn_x: CifField.ofNumbers(Cartn_x),
+        Cartn_y: CifField.ofNumbers(Cartn_y),
+        Cartn_z: CifField.ofNumbers(Cartn_z),
+        group_PDB: CifField.ofColumn(Column.ofConst('ATOM', rowCount, Column.Schema.str)),
+        id: CifField.ofColumn(Column.ofLambda({
+            value: row => row,
+            areValuesEqual: (rowA, rowB) => rowA === rowB,
+            rowCount, schema: d.id.schema,
+        })),
+
+        label_alt_id: CifField.ofColumn(multColumn(d.label_alt_id)),
+
+        label_asym_id: CifField.ofColumn(multColumn(d.label_asym_id)),
+        label_atom_id: CifField.ofColumn(multColumn(d.label_atom_id)),
+        label_comp_id: CifField.ofColumn(multColumn(d.label_comp_id)),
+        label_seq_id: CifField.ofNumbers(seq),
+        label_entity_id: CifField.ofColumn(Column.ofConst('1', rowCount, Column.Schema.str)),
+
+        occupancy: CifField.ofColumn(Column.ofConst(1, rowCount, Column.Schema.float)),
+        type_symbol: CifField.ofColumn(multColumn(d.type_symbol)),
+
+        pdbx_PDB_ins_code: CifField.ofColumn(Column.ofConst('', rowCount, Column.Schema.str)),
+        pdbx_PDB_model_num: CifField.ofColumn(Column.ofConst(1, rowCount, Column.Schema.int)),
+    };
+
+    const categories = {
+        entity: CifCategory.ofTable('entity', db.entity),
+        chem_comp: CifCategory.ofTable('chem_comp', db.chem_comp),
+        atom_site: CifCategory.ofFields('atom_site', _atom_site)
+    };
+
+    return {
+        header: name,
+        categoryNames: Object.keys(categories),
+        categories
+    };
+}
+
+async function getCurve(plugin: PluginContext, name: string, ingredient: Ingredient, transforms: Mat4[], model: Model) {
+    const cif = getCifCurve(name, transforms, model);
+    const curveModelTask = Task.create('Curve Model', async ctx => {
+        const format = MmcifFormat.fromFrame(cif);
+        const models = await createModels(format.data.db, format, ctx);
+        return models.representative;
+    });
+
+    const curveModel = await plugin.runTask(curveModelTask);
+    return getStructure(plugin, curveModel, ingredient.source);
+}
+
+async function getIngredientStructure(plugin: PluginContext, ingredient: Ingredient, baseUrl: string, ingredientFiles: IngredientFiles, trajCache: TrajectoryCache) {
+    const { name, source, results, nbCurve } = ingredient;
+    if (source.pdb === 'None') return;
+
+    const file = ingredientFiles[source.pdb];
+    if (!file) {
+        // TODO can these be added to the library?
+        if (name === 'HIV1_CAhex_0_1_0') return; // 1VU4CtoH_hex.pdb
+        if (name === 'HIV1_CAhexCyclophilA_0_1_0') return; // 1AK4fitTo1VU4hex.pdb
+        if (name === 'iLDL') return; // EMD-5239
+        if (name === 'peptides') return; // peptide.pdb
+        if (name === 'lypoglycane') return;
+    }
+
+    // model id in case structure is NMR
+    const { model, assets } = await getModel(plugin, source.pdb || name, ingredient, baseUrl, trajCache, file);
+    if (!model) return;
+
+    let structure: Structure;
+    if (nbCurve) {
+        structure = await getCurve(plugin, name, ingredient, getCurveTransforms(ingredient), model);
+    } else {
+        let bu: string|undefined = source.bu ? source.bu : undefined;
+        if (bu){
+            if (bu === 'AU') {
+                bu = undefined;
+            } else {
+                bu = bu.slice(2);
+            }
+        }
+        structure = await getStructure(plugin, model, source, { assembly: bu });
+        // transform with offset and pcp
+        let legacy: boolean = true;
+        if (ingredient.offset || ingredient.principalAxis){
+            legacy = false;
+            const structureMean = getStructureMean(structure);
+            Vec3.negate(structureMean, structureMean);
+            const m1: Mat4 = Mat4.identity();
+            Mat4.setTranslation(m1, structureMean);
+            structure = Structure.transform(structure, m1);
+            if (ingredient.offset){
+                if (!Vec3.exactEquals(ingredient.offset, Vec3.zero())){
+                    const m: Mat4 = Mat4.identity();
+                    Mat4.setTranslation(m, ingredient.offset);
+                    structure = Structure.transform(structure, m);
+                }
+            }
+            if (ingredient.principalAxis){
+                if (!Vec3.exactEquals(ingredient.principalAxis, Vec3.unitZ)){
+                    const q: Quat = Quat.identity();
+                    Quat.rotationTo(q, ingredient.principalAxis, Vec3.unitZ);
+                    const m: Mat4 = Mat4.fromQuat(Mat4.zero(), q);
+                    structure = Structure.transform(structure, m);
+                }
+            }
+        }
+        structure = getAssembly(getResultTransforms(results, legacy), structure);
+    }
+
+    return { structure, assets };
+}
+
+export function createStructureFromCellPack(plugin: PluginContext, packing: CellPacking, baseUrl: string, ingredientFiles: IngredientFiles) {
+    return Task.create('Create Packing Structure', async ctx => {
+        const { ingredients, name } = packing;
+        const assets: Asset.Wrapper[] = [];
+        const trajCache = new TrajectoryCache();
+        const structures: Structure[] = [];
+        const colors: Color[] = [];
+        let skipColors: boolean = false;
+        for (const iName in ingredients) {
+            if (ctx.shouldUpdate) await ctx.update(iName);
+            const ingredientStructure = await getIngredientStructure(plugin, ingredients[iName], baseUrl, ingredientFiles, trajCache);
+            if (ingredientStructure) {
+                structures.push(ingredientStructure.structure);
+                assets.push(...ingredientStructure.assets);
+                const c = ingredients[iName].color;
+                if (c){
+                    colors.push(Color.fromNormalizedRgb(c[0], c[1], c[2]));
+                } else {
+                    skipColors = true;
+                }
+            }
+        }
+
+        if (ctx.shouldUpdate) await ctx.update(`${name} - units`);
+        const units: Unit[] = [];
+        let offsetInvariantId = 0;
+        let offsetChainGroupId = 0;
+        for (const s of structures) {
+            if (ctx.shouldUpdate) await ctx.update(`${s.label}`);
+            let maxInvariantId = 0;
+            let maxChainGroupId = 0;
+            for (const u of s.units) {
+                const invariantId = u.invariantId + offsetInvariantId;
+                const chainGroupId = u.chainGroupId + offsetChainGroupId;
+                if (u.invariantId > maxInvariantId) maxInvariantId = u.invariantId;
+                units.push(Unit.create(units.length, invariantId, chainGroupId, u.traits, u.kind, u.model, u.conformation.operator, u.elements, u.props));
+            }
+            offsetInvariantId += maxInvariantId + 1;
+            offsetChainGroupId += maxChainGroupId + 1;
+        }
+
+        if (ctx.shouldUpdate) await ctx.update(`${name} - structure`);
+        const structure = new Structure(units);
+        for( let i = 0, il = structure.models.length; i < il; ++i) {
+            Model.TrajectoryInfo.set(structure.models[i], { size: il, index: i });
+        }
+        return { structure, assets, colors: skipColors ? undefined : colors };
+    });
+}
+
+async function handleHivRna(plugin: PluginContext, packings: CellPacking[], baseUrl: string) {
+    for (let i = 0, il = packings.length; i < il; ++i) {
+        if (packings[i].name === 'HIV1_capsid_3j3q_PackInner_0_1_0') {
+            const url = Asset.getUrlAsset(plugin.managers.asset, `${baseUrl}/extras/rna_allpoints.json`);
+            const json = await plugin.runTask(plugin.managers.asset.resolve(url, 'json', false));
+            const points = json.data.points as number[];
+
+            const curve0: Vec3[] = [];
+            for (let j = 0, jl = points.length; j < jl; j += 3) {
+                curve0.push(Vec3.fromArray(Vec3(), points, j));
+            }
+            packings[i].ingredients['RNA'] = {
+                source: { pdb: 'RNA_U_Base.pdb', transform: { center: false } },
+                results: [],
+                name: 'RNA',
+                nbCurve: 1,
+                curve0
+            };
+        }
+    }
+}
+
+async function loadMembrane(plugin: PluginContext, name: string, state: State, params: LoadCellPackModelParams) {
+    let file: Asset.File | undefined = undefined;
+    if (params.ingredients !== null) {
+        const fileName = `${name}.bcif`;
+        for (const f of params.ingredients) {
+            if (fileName === f.name) {
+                file = f;
+                break;
+            }
+        }
+        if (!file){
+            // check for cif directly
+            const cifileName = `${name}.cif`;
+            for (const f of params.ingredients) {
+                if (cifileName === f.name) {
+                    file = f;
+                    break;
+                }
+            }
+        }
+    }
+
+    let b = state.build().toRoot();
+    if (file) {
+        if (file.name.endsWith('.cif')) {
+            b = b.apply(StateTransforms.Data.ReadFile, { file, isBinary: false, label: file.name }, { state: { isGhost: true } });
+        } else if (file.name.endsWith('.bcif')) {
+            b = b.apply(StateTransforms.Data.ReadFile, { file, isBinary: true, label: file.name }, { state: { isGhost: true } });
+        }
+    } else {
+        const url = Asset.getUrlAsset(plugin.managers.asset, `${params.baseUrl}/membranes/${name}.bcif`);
+        b = b.apply(StateTransforms.Data.Download, { url, isBinary: true, label: name }, { state: { isGhost: true } });
+    }
+
+    const membrane = await b.apply(StateTransforms.Data.ParseCif, undefined, { state: { isGhost: true } })
+        .apply(StateTransforms.Model.TrajectoryFromMmCif, undefined, { state: { isGhost: true } })
+        .apply(StateTransforms.Model.ModelFromTrajectory, undefined, { state: { isGhost: true } })
+        .apply(StructureFromAssemblies, undefined, { state: { isGhost: true } })
+        .commit({ revertOnError: true });
+
+    const membraneParams = {
+        representation: params.preset.representation,
+    };
+
+    await CellpackMembranePreset.apply(membrane, membraneParams, plugin);
+}
+
+async function loadPackings(plugin: PluginContext, runtime: RuntimeContext, state: State, params: LoadCellPackModelParams) {
+    const ingredientFiles = params.ingredients || [];
+
+    let cellPackJson: StateBuilder.To<PSO.Format.Json, StateTransformer<PSO.Data.String, PSO.Format.Json>>;
+    if (params.source.name === 'id') {
+        const url = Asset.getUrlAsset(plugin.managers.asset, getCellPackModelUrl(params.source.params, params.baseUrl));
+        cellPackJson = state.build().toRoot()
+            .apply(StateTransforms.Data.Download, { url, isBinary: false, label: params.source.params }, { state: { isGhost: true } });
+    } else {
+        const file = params.source.params;
+        if (!file?.file) {
+            plugin.log.error('No file selected');
+            return;
+        }
+
+        let jsonFile: Asset.File;
+        if (file.name.toLowerCase().endsWith('.zip')) {
+            const data = await readFromFile(file.file, 'zip').runInContext(runtime);
+            jsonFile = Asset.File(new File([data['model.json']], 'model.json'));
+            objectForEach(data, (v, k) => {
+                if (k === 'model.json') return;
+                ingredientFiles.push(Asset.File(new File([v], k)));
+            });
+        } else {
+            jsonFile = file;
+        }
+
+        cellPackJson = state.build().toRoot()
+            .apply(StateTransforms.Data.ReadFile, { file: jsonFile, isBinary: false, label: jsonFile.name }, { state: { isGhost: true } });
+    }
+
+    const cellPackBuilder = cellPackJson
+        .apply(StateTransforms.Data.ParseJson, undefined, { state: { isGhost: true } })
+        .apply(ParseCellPack);
+
+    const cellPackObject = await state.updateTree(cellPackBuilder).runInContext(runtime);
+    const { packings } = cellPackObject.obj!.data;
+
+    await handleHivRna(plugin, packings, params.baseUrl);
+
+    for (let i = 0, il = packings.length; i < il; ++i) {
+        const p = { packing: i, baseUrl: params.baseUrl, ingredientFiles };
+
+        const packing = await state.build()
+            .to(cellPackBuilder.ref)
+            .apply(StructureFromCellpack, p)
+            .commit({ revertOnError: true });
+
+        const packingParams = {
+            traceOnly: params.preset.traceOnly,
+            representation: params.preset.representation,
+        };
+        await CellpackPackingPreset.apply(packing, packingParams, plugin);
+        if ( packings[i].location === 'surface' && params.membrane){
+            await loadMembrane(plugin, packings[i].name, state, params);
+        }
+    }
+}
+
+const LoadCellPackModelParams = {
+    source: PD.MappedStatic('id', {
+        'id': PD.Select('InfluenzaModel2.json', [
+            ['blood_hiv_immature_inside.json', 'Blood HIV immature'],
+            ['HIV_immature_model.json', 'HIV immature'],
+            ['BloodHIV1.0_mixed_fixed_nc1.cpr', 'Blood HIV'],
+            ['HIV-1_0.1.6-8_mixed_radii_pdb.cpr', 'HIV'],
+            ['influenza_model1.json', 'Influenza envelope'],
+            ['InfluenzaModel2.json', 'Influenza Complete'],
+            ['ExosomeModel.json', 'Exosome Model'],
+            ['Mycoplasma1.5_mixed_pdb_fixed.cpr', 'Mycoplasma simple'],
+            ['MycoplasmaModel.json', 'Mycoplasma WholeCell model'],
+        ] as const, { description: 'Download the model definition with `id` from the server at `baseUrl.`' }),
+        'file': PD.File({ accept: '.json,.cpr,.zip', description: 'Open model definition from .json/.cpr file or open .zip file containing model definition plus ingredients.' }),
+    }, { options: [['id', 'Id'], ['file', 'File']] }),
+    baseUrl: PD.Text(DefaultCellPackBaseUrl),
+    membrane: PD.Boolean(true),
+    ingredients: PD.FileList({ accept: '.cif,.bcif,.pdb', label: 'Ingredients' }),
+    preset: PD.Group({
+        traceOnly: PD.Boolean(false),
+        representation: PD.Select('gaussian-surface', PD.arrayToOptions(['spacefill', 'gaussian-surface', 'point', 'orientation']))
+    }, { isExpanded: true })
+};
+type LoadCellPackModelParams = PD.Values<typeof LoadCellPackModelParams>
+
+export const LoadCellPackModel = StateAction.build({
+    display: { name: 'Load CellPack', description: 'Open or download a model' },
+    params: LoadCellPackModelParams,
+    from: PSO.Root
+})(({ state, params }, ctx: PluginContext) => Task.create('CellPack Loader', async taskCtx => {
+    await loadPackings(ctx, taskCtx, state, params);
+}));
--- a/src/apps/viewer/extensions/cellpack/preset.ts
+++ b/src/apps/viewer/extensions/cellpack/preset.ts
@@ -4,16 +4,18 @@
 * @author Alexander Rose <alexander.rose@weirdbyte.de>
 */

-import { StateObjectRef } from '../../../../mol-state';
-import { StructureRepresentationPresetProvider, presetStaticComponent } from '../../../../mol-plugin-state/builder/structure/representation-preset';
-import { ParamDefinition as PD } from '../../../../mol-util/param-definition';
-import { ColorNames } from '../../../../mol-util/color/names';
-import { CellPackColorThemeProvider } from './color';
+import { StateObjectRef } from '../../mol-state';
+import { StructureRepresentationPresetProvider, presetStaticComponent } from '../../mol-plugin-state/builder/structure/representation-preset';
+import { ParamDefinition as PD } from '../../mol-util/param-definition';
+import { ColorNames } from '../../mol-util/color/names';
+import { CellPackGenerateColorThemeProvider } from './color/generate';
+import { CellPackInfoProvider } from './property';
+import { CellPackProvidedColorThemeProvider } from './color/provided';

 export const CellpackPackingPresetParams = {
    traceOnly: PD.Boolean(true),
    representation: PD.Select('gaussian-surface', PD.arrayToOptions(['gaussian-surface', 'spacefill', 'point', 'orientation'])),
-}
+};
 export type CellpackPackingPresetParams = PD.ValuesFor<typeof CellpackPackingPresetParams>

 export const CellpackPackingPreset = StructureRepresentationPresetProvider({
@@ -35,18 +37,20 @@ export const CellpackPackingPreset = StructureRepresentationPresetProvider({
        if (params.representation === 'gaussian-surface') {
            Object.assign(reprProps, {
                quality: 'custom', resolution: 10, radiusOffset: 2, doubleSided: false
-            })
+            });
        } else if (params.representation === 'spacefill' && params.traceOnly) {
-            Object.assign(reprProps, { sizeFactor: 2 })
+            Object.assign(reprProps, { sizeFactor: 2 });
        }

+        const info = structureCell.obj?.data && CellPackInfoProvider.get(structureCell.obj?.data).value;
+        const color = info?.colors ? CellPackProvidedColorThemeProvider.name : CellPackGenerateColorThemeProvider.name;
+
        const { update, builder, typeParams } = StructureRepresentationPresetProvider.reprBuilder(plugin, {});
-        const color = CellPackColorThemeProvider.name
        const representations = {
            polymer: builder.buildRepresentation<any>(update, components.polymer, { type: params.representation, typeParams: { ...typeParams, ...reprProps }, color }, { tag: 'polymer' })
        };

-        await plugin.updateDataState(update, { revertOnError: true });
+        await update.commit({ revertOnError: true });
        return { components, representations };
    }
 });
@@ -55,7 +59,7 @@ export const CellpackPackingPreset = StructureRepresentationPresetProvider({

 export const CellpackMembranePresetParams = {
    representation: PD.Select('gaussian-surface', PD.arrayToOptions(['gaussian-surface', 'spacefill', 'point', 'orientation'])),
-}
+};
 export type CellpackMembranePresetParams = PD.ValuesFor<typeof CellpackMembranePresetParams>

 export const CellpackMembranePreset = StructureRepresentationPresetProvider({
@@ -76,7 +80,7 @@ export const CellpackMembranePreset = StructureRepresentationPresetProvider({
        if (params.representation === 'gaussian-surface') {
            Object.assign(reprProps, {
                quality: 'custom', resolution: 10, radiusOffset: 2, doubleSided: false
-            })
+            });
        }

        const { update, builder, typeParams } = StructureRepresentationPresetProvider.reprBuilder(plugin, {});
@@ -84,7 +88,8 @@ export const CellpackMembranePreset = StructureRepresentationPresetProvider({
            membrane: builder.buildRepresentation(update, components.membrane, { type: 'gaussian-surface', typeParams: { ...typeParams, ...reprProps }, color: 'uniform', colorParams: { value: ColorNames.lightgrey } }, { tag: 'all' })
        };

-        await plugin.updateDataState(update, { revertOnError: true });
+        await update.commit({ revertOnError: true });
+
        return { components, representations };
    }
 });
--- a/src/apps/viewer/extensions/cellpack/property.ts
+++ b/src/apps/viewer/extensions/cellpack/property.ts
@@ -4,19 +4,22 @@
 * @author Alexander Rose <alexander.rose@weirdbyte.de>
 */

-import { CustomStructureProperty } from '../../../../mol-model-props/common/custom-structure-property'
-import { Structure, CustomPropertyDescriptor } from '../../../../mol-model/structure'
-import { CustomProperty } from '../../../../mol-model-props/common/custom-property'
-import { ParamDefinition as PD } from '../../../../mol-util/param-definition'
+import { CustomStructureProperty } from '../../mol-model-props/common/custom-structure-property';
+import { Structure } from '../../mol-model/structure';
+import { CustomProperty } from '../../mol-model-props/common/custom-property';
+import { ParamDefinition as PD } from '../../mol-util/param-definition';
+import { Color } from '../../mol-util/color';
+import { CustomPropertyDescriptor } from '../../mol-model/custom-property';

 export type CellPackInfoValue = {
    packingsCount: number
    packingIndex: number
+    colors?: Color[]
 }

 const CellPackInfoParams = {
-    info: PD.Value<CellPackInfoValue>({ packingsCount: 1, packingIndex: 0 }, { isHidden: true })
-}
+    info: PD.Value<CellPackInfoValue>({ packingsCount: 1, packingIndex: 0, colors: undefined }, { isHidden: true })
+};
 type CellPackInfoParams = PD.Values<typeof CellPackInfoParams>

 export const CellPackInfoProvider: CustomStructureProperty.Provider<typeof CellPackInfoParams, CellPackInfoValue> = CustomStructureProperty.createProvider({
@@ -27,6 +30,8 @@ export const CellPackInfoProvider: CustomStructureProperty.Provider<typeof CellP
    getParams: (data: Structure) => CellPackInfoParams,
    isApplicable: (data: Structure) => true,
    obtain: async (ctx: CustomProperty.Context, data: Structure, props: CellPackInfoParams) => {
-        return { ...CellPackInfoParams.info.defaultValue, ...props.info }
+        return {
+            value: { ...CellPackInfoParams.info.defaultValue, ...props.info }
+        };
    }
-})
+});
--- a/src/extensions/cellpack/state.ts
+++ b/src/extensions/cellpack/state.ts
@@ -0,0 +1,150 @@
+/**
+ * Copyright (c) 2019-2020 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * @author Alexander Rose <alexander.rose@weirdbyte.de>
+ */
+
+import { PluginStateObject as PSO, PluginStateTransform } from '../../mol-plugin-state/objects';
+import { ParamDefinition as PD } from '../../mol-util/param-definition';
+import { Task } from '../../mol-task';
+import { CellPack as _CellPack, Cell, CellPacking } from './data';
+import { createStructureFromCellPack } from './model';
+import { IngredientFiles } from './util';
+import { Asset } from '../../mol-util/assets';
+import { PluginContext } from '../../mol-plugin/context';
+import { CellPackInfoProvider } from './property';
+import { Structure, StructureSymmetry, Unit, Model } from '../../mol-model/structure';
+import { ModelSymmetry } from '../../mol-model-formats/structure/property/symmetry';
+
+export const DefaultCellPackBaseUrl = 'https://mesoscope.scripps.edu/data/cellPACK_data/cellPACK_database_1.1.0/';
+
+export class CellPack extends PSO.Create<_CellPack>({ name: 'CellPack', typeClass: 'Object' }) { }
+
+export { ParseCellPack };
+type ParseCellPack = typeof ParseCellPack
+const ParseCellPack = PluginStateTransform.BuiltIn({
+    name: 'parse-cellpack',
+    display: { name: 'Parse CellPack', description: 'Parse CellPack from JSON data' },
+    from: PSO.Format.Json,
+    to: CellPack
+})({
+    apply({ a }) {
+        return Task.create('Parse CellPack', async ctx => {
+            const cell = a.data as Cell;
+
+            const packings: CellPacking[] = [];
+            const { compartments, cytoplasme } = cell;
+            if (compartments) {
+                for (const name in compartments) {
+                    const { surface, interior } = compartments[name];
+                    if (surface) packings.push({ name, location: 'surface', ingredients: surface.ingredients });
+                    if (interior) packings.push({ name, location: 'interior', ingredients: interior.ingredients });
+                }
+            }
+            if (cytoplasme) packings.push({ name: 'Cytoplasme', location: 'cytoplasme', ingredients: cytoplasme.ingredients });
+
+            return new CellPack({ cell, packings });
+        });
+    }
+});
+
+export { StructureFromCellpack };
+type StructureFromCellpack = typeof ParseCellPack
+const StructureFromCellpack = PluginStateTransform.BuiltIn({
+    name: 'structure-from-cellpack',
+    display: { name: 'Structure from CellPack', description: 'Create Structure from CellPack Packing' },
+    from: CellPack,
+    to: PSO.Molecule.Structure,
+    params: a => {
+        const options = a ? a.data.packings.map((d, i) => [i, d.name] as const) : [];
+        return {
+            packing: PD.Select(0, options),
+            baseUrl: PD.Text(DefaultCellPackBaseUrl),
+            ingredientFiles: PD.FileList({ accept: '.cif,.bcif,.pdb' })
+        };
+    }
+})({
+    apply({ a, params, cache }, plugin: PluginContext) {
+        return Task.create('Structure from CellPack', async ctx => {
+            const packing = a.data.packings[params.packing];
+            const ingredientFiles: IngredientFiles = {};
+            if (params.ingredientFiles !== null) {
+                for (const file of params.ingredientFiles) {
+                    ingredientFiles[file.name] = file;
+                }
+            }
+            const { structure, assets, colors } = await createStructureFromCellPack(plugin, packing, params.baseUrl, ingredientFiles).runInContext(ctx);
+            await CellPackInfoProvider.attach({ runtime: ctx, assetManager: plugin.managers.asset }, structure, {
+                info: { packingsCount: a.data.packings.length, packingIndex: params.packing, colors }
+            });
+
+            (cache as any).assets = assets;
+            return new PSO.Molecule.Structure(structure, { label: packing.name });
+        });
+    },
+    dispose({ b, cache }) {
+        const assets = (cache as any).assets as Asset.Wrapper[];
+        if(assets) {
+            for (const a of assets) a.dispose();
+        }
+
+        if (b) {
+            b.data.customPropertyDescriptors.dispose();
+            for (const m of b.data.models) {
+                m.customProperties.dispose();
+            }
+        }
+    }
+});
+
+export { StructureFromAssemblies };
+type StructureFromAssemblies = typeof StructureFromAssemblies
+const StructureFromAssemblies = PluginStateTransform.BuiltIn({
+    name: 'Structure from all assemblies',
+    display: { name: 'Structure from all assemblies' },
+    from: PSO.Molecule.Model,
+    to: PSO.Molecule.Structure,
+    params: {
+    }
+})({
+    canAutoUpdate({ newParams }) {
+        return true;
+    },
+    apply({ a, params }) {
+        return Task.create('Build Structure', async ctx => {
+            // TODO: optimze
+            // TODO: think of ways how to fast-track changes to this for animations
+            const model = a.data;
+            let initial_structure = Structure.ofModel(model);
+            const structures: Structure[] = [];
+            let structure: Structure = initial_structure;
+            // the list of asambly *?
+            const symmetry = ModelSymmetry.Provider.get(model);
+            if (symmetry && symmetry.assemblies.length !== 0){
+                for (const a of symmetry.assemblies) {
+                    const s = await StructureSymmetry.buildAssembly(initial_structure, a.id).runInContext(ctx);
+                    structures.push(s);
+                }
+                const builder = Structure.Builder();
+                let offsetInvariantId = 0;
+                for (const s of structures) {
+                    let maxInvariantId = 0;
+                    for (const u of s.units) {
+                        const invariantId = u.invariantId + offsetInvariantId;
+                        if (u.invariantId > maxInvariantId) maxInvariantId = u.invariantId;
+                        builder.addUnit(u.kind, u.model, u.conformation.operator, u.elements, Unit.Trait.None, invariantId);
+                    }
+                    offsetInvariantId += maxInvariantId + 1;
+                }
+                structure = builder.getStructure();
+                for( let i = 0, il = structure.models.length; i < il; ++i) {
+                    Model.TrajectoryInfo.set(structure.models[i], { size: il, index: i });
+                }
+            }
+            return new PSO.Molecule.Structure(structure, { label: a.label, description: `${a.description}` });
+        });
+    },
+    dispose({ b }) {
+        b?.data.customPropertyDescriptors.dispose();
+    }
+});
--- a/src/extensions/cellpack/util.ts
+++ b/src/extensions/cellpack/util.ts
@@ -0,0 +1,77 @@
+/**
+ * Copyright (c) 2019-2020 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * @author Alexander Rose <alexander.rose@weirdbyte.de>
+ */
+
+import { CIF } from '../../mol-io/reader/cif';
+import { parsePDB } from '../../mol-io/reader/pdb/parser';
+import { AssetManager, Asset } from '../../mol-util/assets';
+import { Structure } from '../../mol-model/structure';
+import { Vec3 } from '../../mol-math/linear-algebra';
+import { PluginContext } from '../../mol-plugin/context';
+
+export async function parseCif(plugin: PluginContext, data: string | Uint8Array) {
+    const comp = CIF.parse(data);
+    const parsed = await plugin.runTask(comp);
+    if (parsed.isError) throw parsed;
+    return parsed.result;
+}
+
+export async function parsePDBfile(plugin: PluginContext, data: string, id: string) {
+    const comp = parsePDB(data, id);
+    const parsed = await plugin.runTask(comp);
+    if (parsed.isError) throw parsed;
+    return parsed.result;
+}
+
+async function downloadCif(plugin: PluginContext, url: string, isBinary: boolean, assetManager: AssetManager) {
+    const type = isBinary ? 'binary' : 'string';
+    const asset = await plugin.runTask(assetManager.resolve(Asset.getUrlAsset(assetManager, url), type));
+    return { cif: await parseCif(plugin, asset.data), asset };
+}
+
+async function downloadPDB(plugin: PluginContext, url: string, id: string, assetManager: AssetManager) {
+    const asset = await assetManager.resolve(Asset.getUrlAsset(assetManager, url), 'string').run();
+    return { pdb: await parsePDBfile(plugin, asset.data, id), asset };
+}
+
+export async function getFromPdb(plugin: PluginContext, pdbId: string, assetManager: AssetManager) {
+    const { cif, asset } = await downloadCif(plugin, `https://models.rcsb.org/${pdbId.toUpperCase()}.bcif`, true, assetManager);
+    return { mmcif: cif.blocks[0], asset };
+}
+
+export async function getFromOPM(plugin: PluginContext, pdbId: string, assetManager: AssetManager){
+    const asset = await plugin.runTask(assetManager.resolve(Asset.getUrlAsset(assetManager, `https://opm-assets.storage.googleapis.com/pdb/${pdbId.toLowerCase()}.pdb`), 'string'));
+    return { pdb: await parsePDBfile(plugin, asset.data, pdbId), asset };
+}
+
+export async function getFromCellPackDB(plugin: PluginContext, id: string, baseUrl: string, assetManager: AssetManager) {
+    if (id.toLowerCase().endsWith('.cif') || id.toLowerCase().endsWith('.bcif')) {
+        const isBinary = id.toLowerCase().endsWith('.bcif');
+        const { cif, asset } = await downloadCif(plugin, `${baseUrl}/other/${id}`, isBinary, assetManager);
+        return { mmcif: cif.blocks[0], asset };
+    } else {
+        const name = id.endsWith('.pdb') ? id.substring(0, id.length - 4) : id;
+        return await downloadPDB(plugin, `${baseUrl}/other/${name}.pdb`, name, assetManager);
+    }
+}
+
+export type IngredientFiles = { [name: string]: Asset.File }
+
+export function getStructureMean(structure: Structure) {
+    let xSum = 0, ySum = 0, zSum = 0;
+    for (let i = 0, il = structure.units.length; i < il; ++i) {
+        const unit = structure.units[i];
+        const { elements } = unit;
+        const { x, y, z } = unit.conformation;
+        for (let j = 0, jl = elements.length; j < jl; ++j) {
+            const eI = elements[j];
+            xSum += x(eI);
+            ySum += y(eI);
+            zSum += z(eI);
+        }
+    }
+    const { elementCount } = structure;
+    return Vec3.create(xSum / elementCount, ySum / elementCount, zSum / elementCount);
+}
--- a/src/extensions/dnatco/README.md
+++ b/src/extensions/dnatco/README.md
@@ -0,0 +1,10 @@
+## DNATCO Extensions
+
+### Confal Pyramids
+
+The Confal Pyramids extensions displays tetrahedron-like pyramids. These pyramids are a simple visual representation of nucleotide conformer classes that can be assigned to individual steps in nucleic acid structures.
+
+For more information, see:
+* [Černý et al., Nucleic Acids Research, 44, W284 (2016)](http://dx.doi.org/10.1093/nar/gkw381)
+* [Schneider et al., Acta Cryst D, 74, 52-64 (2018)](http://dx.doi.org/10.1107/S2059798318000050)
+* [Schneider et al., Genes, 8(10), 278, (2017)](http://dx.doi.org/10.3390/genes8100278)
--- a/src/extensions/dnatco/confal-pyramids/behavior.ts
+++ b/src/extensions/dnatco/confal-pyramids/behavior.ts
@@ -0,0 +1,103 @@
+/**
+ * Copyright (c) 2018-2020 mol* contributors, licensed under MIT, See LICENSE file for more info.
+ *
+ * @author Michal Malý <michal.maly@ibt.cas.cz>
+ * @author Jiří Černý <jiri.cerny@ibt.cas.cz>
+ */
+
+import { ConfalPyramidsColorThemeProvider } from './color';
+import { ConfalPyramids, ConfalPyramidsProvider } from './property';
+import { ConfalPyramidsRepresentationProvider } from './representation';
+import { Loci } from '../../../mol-model/loci';
+import { PluginBehavior } from '../../../mol-plugin/behavior/behavior';
+import { StructureRepresentationPresetProvider, PresetStructureRepresentations } from '../../../mol-plugin-state/builder/structure/representation-preset';
+import { StateObjectRef } from '../../../mol-state';
+import { Task } from '../../../mol-task';
+import { ParamDefinition as PD } from '../../../mol-util/param-definition';
+
+export const DnatcoConfalPyramidsPreset = StructureRepresentationPresetProvider({
+    id: 'preset-structure-representation-confal-pyramids',
+    display: {
+        name: 'Confal Pyramids', group: 'Annotation',
+        description: 'Schematic depiction of conformer class and confal value.',
+    },
+    isApplicable(a) {
+        return a.data.models.length >= 1 && a.data.models.some(m => ConfalPyramids.isApplicable(m));
+    },
+    params: () => StructureRepresentationPresetProvider.CommonParams,
+    async apply(ref, params, plugin) {
+        const structureCell = StateObjectRef.resolveAndCheck(plugin.state.data, ref);
+        const model = structureCell?.obj?.data.model;
+        if (!structureCell || !model) return {};
+
+        await plugin.runTask(Task.create('Confal Pyramids', async runtime => {
+            await ConfalPyramidsProvider.attach({ runtime, assetManager: plugin.managers.asset }, model);
+        }));
+
+        const { components, representations } = await PresetStructureRepresentations.auto.apply(ref, { ...params }, plugin);
+
+        const pyramids = await plugin.builders.structure.tryCreateComponentStatic(structureCell, 'nucleic', { label: 'Confal Pyramids' });
+        const { update, builder, typeParams } = StructureRepresentationPresetProvider.reprBuilder(plugin, params);
+
+        let pyramidsRepr;
+        if (representations)
+            pyramidsRepr = builder.buildRepresentation(update, pyramids,  { type: ConfalPyramidsRepresentationProvider, typeParams, color: ConfalPyramidsColorThemeProvider }, { tag: 'confal-pyramdis' } );
+
+        await update.commit({ revertOnError: true });
+        return  { components: { ...components, pyramids }, representations: { ...representations, pyramidsRepr } };
+    }
+});
+
+export const DnatcoConfalPyramids = PluginBehavior.create<{ autoAttach: boolean, showToolTip: boolean }>({
+    name: 'dnatco-confal-pyramids-prop',
+    category: 'custom-props',
+    display: {
+        name: 'Confal Pyramids',
+        description: 'Schematic depiction of conformer class and confal value.',
+    },
+    ctor: class extends PluginBehavior.Handler<{ autoAttach: boolean, showToolTip: boolean }> {
+
+        private provider = ConfalPyramidsProvider;
+
+        private labelConfalPyramids = {
+            label: (loci: Loci): string | undefined => {
+                if (!this.params.showToolTip) return void 0;
+
+                /* TODO: Implement this */
+                return void 0;
+            }
+        }
+
+        register(): void {
+            this.ctx.customModelProperties.register(this.provider, this.params.autoAttach);
+            this.ctx.managers.lociLabels.addProvider(this.labelConfalPyramids);
+
+            this.ctx.representation.structure.themes.colorThemeRegistry.add(ConfalPyramidsColorThemeProvider);
+            this.ctx.representation.structure.registry.add(ConfalPyramidsRepresentationProvider);
+
+            this.ctx.builders.structure.representation.registerPreset(DnatcoConfalPyramidsPreset);
+        }
+
+        update(p: { autoAttach: boolean, showToolTip: boolean }) {
+            const updated = this.params.autoAttach !== p.autoAttach;
+            this.params.autoAttach = p.autoAttach;
+            this.params.showToolTip = p.showToolTip;
+            this.ctx.customModelProperties.setDefaultAutoAttach(this.provider.descriptor.name, this.params.autoAttach);
+            return updated;
+        }
+
+        unregister() {
+            this.ctx.customModelProperties.unregister(ConfalPyramidsProvider.descriptor.name);
+            this.ctx.managers.lociLabels.removeProvider(this.labelConfalPyramids);
+
+            this.ctx.representation.structure.registry.remove(ConfalPyramidsRepresentationProvider);
+            this.ctx.representation.structure.themes.colorThemeRegistry.remove(ConfalPyramidsColorThemeProvider);
+
+            this.ctx.builders.structure.representation.unregisterPreset(DnatcoConfalPyramidsPreset);
+        }
+    },
+    params: () => ({
+        autoAttach: PD.Boolean(true),
+        showToolTip: PD.Boolean(true)
+    })
+});
--- a/Show More
+++ b/Show More