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pymol-open-source/layer2/RepLabel.cpp

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/*
A* -------------------------------------------------------------------
B* This file contains source code for the PyMOL computer program
C* copyright 1998-2000 by Warren Lyford Delano of DeLano Scientific.
D* -------------------------------------------------------------------
E* It is unlawful to modify or remove this copyright notice.
F* -------------------------------------------------------------------
G* Please see the accompanying LICENSE file for further information.
H* -------------------------------------------------------------------
I* Additional authors of this source file include:
-*
-*
-*
Z* -------------------------------------------------------------------
*/
#include "os_python.h"
#include "os_gl.h"
#include "os_predef.h"
#include "os_std.h"
#include "Base.h"
#include "CGO.h"
#include "Color.h"
#include "CoordSet.h"
#include "Err.h"
#include "Map.h"
#include "Matrix.h"
#include "RepLabel.h"
#include "Scene.h"
#include "Setting.h"
#include "ShaderMgr.h"
#include "Text.h"
#include "main.h"
/**
* Memory layout of the RepLabel::V array
*/
struct VItemType {
float color[3]; // 0- 2: label_color
float coord[3]; // 3- 5: atom coordinate
float screen_point[3]; // 6- 8: coordinate + label_placement_offset or
// label_screen_point
float connector_color[3]; // 9-11: label_connector_color
float position[3]; // 12-14: label_position
float relativeMode_f; // 15: bitmask
// = (drawConnector << 0)
// | (isScreenCoord << 1)
// | (isPixelCoord << 2)
// | (at_label_z_target << 3)
float spacing; // 16: label_multiline_spacing
float justification; // 17: label_multiline_justification
float padding[3]; // 18-20: label_padding
float draw_var_f; // 21: bitmask
// (1 << 0) * label_connector +
// (1 << 1) * label_bg +
// (1 << 2) * label_bg_outline +
// (1 << 3) * label_connector_mode_1 +
// (1 << 4) * label_connector_mode_2 +
// (1 << 5) * label_connector_mode_3 +
// (1 << 6) * label_connector_mode_4 +
// (1 << 7) * ray_label_connector_flat
float bg_alpha; // 22: 1.0 - label_bg_transparency
float bg_color[3]; // 23-25: label_bg_color
float connector_width; // 26: label_connector_width
float connector_ext_len; // 27: label_connector_ext_length
/**
* @return relative mode flags
*/
short getRelativeMode() const noexcept
{
return static_cast<short>(relativeMode_f);
}
/**
* @return draw var flags (7 bits; see draw_var_f)
*/
int getDrawVar() const noexcept {
constexpr int DRAW_VAR_MASK = 0b01111111;
return DRAW_VAR_MASK & static_cast<int>(draw_var_f);
}
};
struct RepLabel : Rep {
using Rep::Rep;
~RepLabel() override;
cRep_t type() const override { return cRepLabel; }
void render(RenderInfo* info) override;
std::vector<VItemType> labelV;
std::vector<lexidx_t> L;
int N;
int OutlineColor;
CGO* shaderCGO = nullptr;
int texture_font_size = 0;
};
#include "ObjectMolecule.h"
RepLabel::~RepLabel()
{
auto I = this;
CGOFree(I->shaderCGO);
}
#define MAX_LABEL_TEXTURE_SIZE 256
#define MAX_LABEL_FOR_ALWAYS_REFRESH 32
#define PERCENTAGE_CHANGE_FOR_REFRESH .2f
short InvalidateShaderCGOIfTextureNeedsUpdate(
PyMOLGlobals* G, float font_size, int texture_font_size, int* sizeArg)
{
float v_scale, perc = 0.f;
int size, diff;
short inv = false;
v_scale = SceneGetScreenVertexScale(G, nullptr);
size = (int) (0.5F - font_size / v_scale);
if (size <= 0)
size = 1;
if (size > MAX_LABEL_TEXTURE_SIZE) { // if label size is above max, just set
// to max size
size = MAX_LABEL_TEXTURE_SIZE;
if (texture_font_size != size)
inv = true;
} else {
if (font_size > 0 || size < MAX_LABEL_FOR_ALWAYS_REFRESH) {
// if less than min, always refresh labels on texture if size changes
if (texture_font_size != size)
inv = true;
} else {
// label is larger than min, but changes more than a percentage, refresh
// on texture
diff = size - texture_font_size;
diff = diff < 0 ? -diff : diff;
perc = (diff / (float) size);
inv = (perc > PERCENTAGE_CHANGE_FOR_REFRESH);
}
}
*sizeArg = size;
return (inv || !texture_font_size);
}
static float CLAMP_VALUE(float val, float min, float max)
{
return (val < min ? min : (val > max ? max : val));
}
static void RepLabelAdjustScreenZ(PyMOLGlobals* G, float* pt)
{
short outside;
outside = (pt[2] < -1.f || pt[2] > 1.f);
if (!outside) {
pt[2] = CLAMP_VALUE(
pt[2], -.9999, .97); // .98 b/c resolution in the back is lower
}
}
static void addXYtoVertex(
float x, float y, float* xv, float* yv, float* origv, float* v)
{
float tmp3f[3];
copy3f(origv, v);
mult3f(xv, x, tmp3f);
add3f(v, tmp3f, v);
mult3f(yv, y, tmp3f);
add3f(v, tmp3f, v);
}
static void addXYZtoVertex(float x, float y, float z, float* xv, float* yv,
float* zv, float* origv, float* v)
{
float tmp3f[3];
copy3f(origv, v);
mult3f(xv, x, tmp3f);
add3f(v, tmp3f, v);
mult3f(yv, y, tmp3f);
add3f(v, tmp3f, v);
mult3f(zv, z, tmp3f);
add3f(v, tmp3f, v);
}
static void RayDrawLineAsGeometryWithOffsets(CRay* ray, float* pt1, float* pt2,
float* spt1, float* spt2, float* xn, float* yn, float* zn, float line_width,
float topext, float bottomext, float* color, float* dirv,
unsigned char noLighting)
{
float pts[4][3];
float pt1E[3], pt2E[3];
float tmpV[3], tmpV2[3], linev[3];
float nzn[3] = {0.f, 0.f, 1.f};
copy3f(pt1, pt1E);
copy3f(pt2, pt2E);
subtract3f(spt1, spt2, tmpV);
copy3f(tmpV, linev);
normalize3f(linev);
mult3f(linev, line_width, linev);
cross_product3f(tmpV, nzn, tmpV2);
normalize3f(tmpV2);
mult3f(tmpV2, line_width, dirv);
addXYtoVertex(dirv[0], dirv[1], xn, yn, pt1, pt1E);
addXYtoVertex(topext * linev[0], topext * linev[1], xn, yn, pt1E, pts[0]);
addXYtoVertex(dirv[0], dirv[1], xn, yn, pt2, pt2E);
addXYtoVertex(-topext * linev[0], -topext * linev[1], xn, yn, pt2E, pts[1]);
addXYtoVertex(-dirv[0], -dirv[1], xn, yn, pt1, pt1E);
addXYtoVertex(
bottomext * linev[0], bottomext * linev[1], xn, yn, pt1E, pts[2]);
addXYtoVertex(-dirv[0], -dirv[1], xn, yn, pt2, pt2E);
addXYtoVertex(
-bottomext * linev[0], -bottomext * linev[1], xn, yn, pt2E, pts[3]);
ray->triangle3fv(pts[0], pts[1], pts[2], zn, zn, zn, color, color, color);
ray->setLastToNoLighting(noLighting);
ray->triangle3fv(pts[1], pts[2], pts[3], zn, zn, zn, color, color, color);
ray->setLastToNoLighting(noLighting);
}
#ifndef PURE_OPENGL_ES_2
static void drawLine2DCross(
float cw, float x1, float y1, float x2, float y2, float* cross)
{
float lvect[3];
float nzn[3] = {0.f, 0.f, 1.f};
lvect[0] = x2 - x1;
lvect[1] = y2 - y1;
normalize2f(lvect);
cross_product3f(lvect, nzn, cross);
mult3f(cross, cw, cross);
glBegin(GL_TRIANGLE_STRIP);
glVertex3f(x1 + cross[0], y1 + cross[1], 0.f);
glVertex3f(x2 + cross[0], y2 + cross[1], 0.f);
glVertex3f(x1 - cross[0], y1 - cross[1], 0.f);
glVertex3f(x2 - cross[0], y2 - cross[1], 0.f);
glEnd();
}
/* Draw Line/Polygon from point (x1,y1) to (x2,y2) with different Z's, where the
current Z is at world point curpt with the line starting at (x1,y1), and the
second point (x2,y2) is at the world point pt (i.e., the offset is embedded
into the matrix convMatrix computed from SceneGenerateMatrixToAnotherZFromZ
*/
static void drawLineToPointInWorldCross(PyMOLGlobals* G, float cw, float x1,
float y1, float x2, float y2, float* cross, float* pt, float* curpt)
{
float lvect[3];
float nzn[3] = {0.f, 0.f, 1.f};
float convMatrix[16];
float tmppt[3];
SceneGenerateMatrixToAnotherZFromZ(G, convMatrix, curpt, pt);
lvect[0] = x2 - x1;
lvect[1] = y2 - y1;
normalize2f(lvect);
cross_product3f(lvect, nzn, cross);
mult3f(cross, cw, cross);
glBegin(GL_TRIANGLE_STRIP);
glVertex3f(x1 + cross[0], y1 + cross[1], 0.f);
// target point 1 in pt screen coordinates
tmppt[0] = cross[0];
tmppt[1] = cross[1];
tmppt[2] = 0.f;
MatrixTransformC44f3f(convMatrix, tmppt, tmppt);
glVertex3fv(tmppt);
glVertex3f(x1 - cross[0], y1 - cross[1], 0.f);
// target point 2 in pt screen coordinates
tmppt[0] = -cross[0];
tmppt[1] = -cross[1];
tmppt[2] = 0.f;
MatrixTransformC44f3f(convMatrix, tmppt, tmppt);
glVertex3fv(tmppt);
glEnd();
}
#define CLIP_LEFT 1
#define CLIP_RIGHT 2
#define CLIP_TOP 4
#define CLIP_BOTTOM 8
static short CLIPt(float denom, float num, float* tE, float* tL,
short* clipedges, short bitmask)
{
float t;
if (denom > 0) {
t = num / denom;
if (t > *tL)
return 0;
else if (t > *tE) {
*tE = t;
*clipedges = bitmask;
}
} else if (denom < 0) {
t = num / denom;
if (t < *tE)
return 0;
else if (t < *tL) {
*tL = t;
*clipedges = bitmask;
}
} else if (num > 0)
return 0;
return 1;
}
/* This function clips the line inside of the (-xmax,-ymax, xmax, ymax)
* rectangle */
static void Clip2D(float xmax, float ymax, float* x0, float* y0, float* x1,
float* y1, short* visible, short* clipedges)
{
float dx = *x1 - *x0;
float dy = *y1 - *y0;
*visible = 0;
*clipedges = 0;
if (dx == 0.f && dy == 0.f && fabs(*x0) < xmax && fabs(*y0) < ymax)
*visible = 1;
else {
float tE = 0.f, tL = 1.f;
if (CLIPt(dx, -xmax - *x0, &tE, &tL, clipedges, CLIP_LEFT)) // left
if (CLIPt(-dx, *x0 - xmax, &tE, &tL, clipedges, CLIP_RIGHT)) // right
if (CLIPt(dy, -ymax - *y0, &tE, &tL, clipedges, CLIP_BOTTOM)) // bottom
if (CLIPt(-dy, *y0 - ymax, &tE, &tL, clipedges, CLIP_TOP)) { // top
if (*clipedges) {
*visible = 1;
if (tL < 1.f) {
*x1 = *x0 + tL * dx;
*y1 = *y0 + tL * dy;
}
if (tE > 0.f) {
*x0 = +tE * dx;
*y0 += tE * dy;
}
}
}
}
}
static void Clip2DLine(
float xmax, float ymax, float* line, short* visible, short* clipedges)
{
Clip2D(
xmax, ymax, &line[0], &line[1], &line[2], &line[3], visible, clipedges);
}
static void glVertex3fTransformed(float* convMatrix, float x, float y, float z)
{
float tmppt[3] = {x, y, z};
MatrixTransformC44f3f(convMatrix, tmppt, tmppt);
glVertex3fv(tmppt);
}
static void drawLineToPointInWorldCrossClip(PyMOLGlobals* G, int label_z_target,
float cw, float x1, float y1, float x2, float y2, float* cross, float* pt,
float* curpt, float cx, float cy)
{
float lvect[3];
float nzn[3] = {0.f, 0.f, 1.f};
float convMatrix[16];
short visible1, edges1, visible2, edges2;
float line1[4], line2[4];
if (!label_z_target) {
SceneGenerateMatrixToAnotherZFromZ(G, convMatrix, curpt, pt);
} else {
// set convMatrix to translation from label center to target center, i.e.,
// (x2, y2)
identity44f(convMatrix);
MatrixTranslateC44f(convMatrix, x2, y2, 0.f);
}
lvect[0] = x2 - x1;
lvect[1] = y2 - y1;
normalize2f(lvect);
cross_product3f(lvect, nzn, cross);
mult3f(cross, cw, cross);
line1[0] = x1 + cross[0];
line1[1] = y1 + cross[1];
line1[2] = x2 + cross[0];
line1[3] = y2 + cross[1];
line2[0] = x1 - cross[0];
line2[1] = y1 - cross[1];
line2[2] = x2 - cross[0];
line2[3] = y2 - cross[1];
Clip2DLine(cx, cy, line1, &visible1, &edges1);
Clip2DLine(cx, cy, line2, &visible2, &edges2);
if (visible1 && visible2) {
if (edges1 == edges2) {
// if both lines intersect the same edge, just draw the quad
glBegin(GL_TRIANGLE_STRIP);
glVertex3f(line1[2], line1[3], 0.f);
glVertex3fTransformed(convMatrix, cross[0], cross[1], 0.f);
glVertex3f(line2[2], line2[3], 0.f);
glVertex3fTransformed(convMatrix, -cross[0], -cross[1], 0.f);
glEnd();
} else {
// if both lines intersect different edges, need to add the corner
// and generate correct order
float corner[2];
short edges = edges1 | edges2;
corner[0] = (edges & CLIP_LEFT) ? -cx : cx;
corner[1] = (edges & CLIP_BOTTOM) ? -cy : cy;
// staggered triangles which include the corner
glBegin(GL_TRIANGLE_STRIP);
glVertex3f(line1[2], line1[3], 0.f);
glVertex3fTransformed(convMatrix, cross[0], cross[1], 0.f);
glVertex3f(corner[0], corner[1], 0.f);
glVertex3fTransformed(convMatrix, -cross[0], -cross[1], 0.f);
glVertex3f(line2[2], line2[3], 0.f);
glEnd();
}
}
}
static void drawLine2DCheckZTargetCross(PyMOLGlobals* G, short label_z_target,
float* pt, float* curpt, float cw, float x1, float y1, float x2, float y2,
float* cross)
{
if (label_z_target) {
drawLine2DCross(cw, x1, y1, x2, y2, cross);
} else {
drawLineToPointInWorldCross(G, cw, x1, y1, x2, y2, cross, pt, curpt);
}
}
static void drawLine2DCheckZTarget(PyMOLGlobals* G, short label_z_target,
float* pt, float* curpt, float cw, float x1, float y1, float x2, float y2)
{
float cross[3];
drawLine2DCheckZTargetCross(
G, label_z_target, pt, curpt, cw, x1, y1, x2, y2, cross);
}
static void drawLine2DCheckZTargetClip(PyMOLGlobals* G, short label_z_target,
float* pt, float* curpt, float cw, float x1, float y1, float x2, float y2,
float cx, float cy)
{
float cross[3];
drawLineToPointInWorldCrossClip(
G, label_z_target, cw, x1, y1, x2, y2, cross, pt, curpt, cx, cy);
}
void drawLineAsGeometryWithOffsets(float* pt1, float* pt2, float* spt1,
float* spt2, float* xn, float* yn, float* zn, float line_width,
float topext, float bottomext, float* dirv)
{
float pt1E[3], pt2E[3];
float tmpV[3], tmpV2[3], linev[3];
float nzn[3] = {0.f, 0.f, 1.f};
copy3f(pt1, pt1E);
copy3f(pt2, pt2E);
subtract3f(spt1, spt2, tmpV);
copy3f(tmpV, linev);
normalize3f(linev);
mult3f(linev, line_width, linev);
glBegin(GL_TRIANGLE_STRIP);
cross_product3f(tmpV, nzn, tmpV2);
normalize3f(tmpV2);
mult3f(tmpV2, line_width, dirv);
addXYtoVertex(dirv[0], dirv[1], xn, yn, pt1, pt1E);
addXYtoVertex(topext * linev[0], topext * linev[1], xn, yn, pt1E, pt1E);
glVertex3fv(pt1E);
addXYtoVertex(dirv[0], dirv[1], xn, yn, pt2, pt2E);
addXYtoVertex(-topext * linev[0], -topext * linev[1], xn, yn, pt2E, pt2E);
glVertex3fv(pt2E);
addXYtoVertex(-dirv[0], -dirv[1], xn, yn, pt1, pt1E);
addXYtoVertex(bottomext * linev[0], bottomext * linev[1], xn, yn, pt1E, pt1E);
glVertex3fv(pt1E);
addXYtoVertex(-dirv[0], -dirv[1], xn, yn, pt2, pt2E);
addXYtoVertex(
-bottomext * linev[0], -bottomext * linev[1], xn, yn, pt2E, pt2E);
glVertex3fv(pt2E);
glEnd();
}
static void RepLabelRenderBackgroundInImmediate(PyMOLGlobals* G, RepLabel* I,
float* v, int draw_var, float* tCenterPt, short relativeMode, float* xn,
float* yn, float* PmvMatrix, float* RotMatrix, int screenwidth,
int screenheight, float* screenWorldOffset, float* indentFactor,
float text_width, float text_height, float font_size)
{
float pos[3], *labelpos = TextGetLabelPushPos(G);
float hwidth = text_width / 2.f, hheight = text_height / 2.f;
short label_connector_mode = (draw_var & 8) ? 1
: (draw_var & 16) ? 2
: (draw_var & 32) ? 3
: (draw_var & 64) ? 4
: 0;
float cw = *(v + 26) / 2.f;
short label_z_target = relativeMode & 8;
float indentFactorT[2] = {
indentFactor[0] * text_width / 2.f, indentFactor[1] * text_height / 2.f};
{ // taking into account screen adjustments : indent and screen world offset
// to the label point
float v_scale, xn[3], yn[3];
v_scale = SceneGetScreenVertexScale(G, nullptr);
SceneGetScaledAxesAtPoint(G, labelpos, xn, yn);
addXYtoVertex(indentFactorT[0] + screenWorldOffset[0] / v_scale,
indentFactorT[1] + screenWorldOffset[1] / v_scale, xn, yn, labelpos,
pos);
}
{
float tCenter[4], tTarget[4], tVec[3];
float doNotDraw;
short drawLine = true;
float dVectorInPixels[2], dVector[2];
float v_scale;
short visible;
v_scale = SceneGetScreenVertexScale(G, nullptr);
copy3f(v + 6, tCenter);
tCenter[3] = 1.f;
copy3f(v + 3, tTarget);
tTarget[3] = 1.f;
MatrixTransformC44f4f(PmvMatrix, tTarget, tTarget);
normalize4f(tTarget);
if (!((relativeMode & 2) ||
(relativeMode & 4))) { // label_relative_mode = 0, not 1 or 2
MatrixTransformC44f4f(PmvMatrix, tCenter, tCenter);
normalize4f(tCenter);
} // label_relative_mode =1 : nothing, lready in screen coordinates
if (relativeMode & 4) { // label_relative_mode = 2
tCenter[0] = (tCenter[0] / screenwidth) * 2 - 1.f;
tCenter[1] = (tCenter[1] / screenheight) * 2 - 1.f;
}
subtract3f(tTarget, tCenter, tVec);
dVectorInPixels[0] = .5f * (screenwidth * tVec[0]) -
(screenWorldOffset[0] / v_scale) - indentFactorT[0];
dVectorInPixels[1] = .5f * (screenheight * tVec[1]) -
(screenWorldOffset[1] / v_scale) - indentFactorT[1];
dVector[0] = (dVectorInPixels[0] / text_width);
dVector[1] = (dVectorInPixels[1] / text_height);
doNotDraw =
((fabs(dVector[0])) <= .5f && (fabs(dVector[1])) <= .5f) ? 1.f : 0.f;
if (!(draw_var & 1) || doNotDraw > .5f)
drawLine = false;
if (label_z_target) {
visible = SceneGetVisible(G, v + 3);
ScenePushRasterMatrix(G, v + 3);
glTranslatef(-dVectorInPixels[0], -dVectorInPixels[1], 0.f);
} else {
visible = SceneGetVisible(G, pos);
ScenePushRasterMatrix(G, pos);
}
glEnable(GL_POLYGON_OFFSET_FILL);
glPolygonOffset(0.f, 1.f);
if (!visible) {
draw_var = 0;
drawLine = 0;
}
if (draw_var & 6) { // draw background or background outline
if (draw_var & 2) { // draw background
float bgwidth = hwidth, bgheight = hheight;
if (draw_var & 4) {
bgwidth -= cw;
bgheight -= cw;
}
glColor4f(v[23], v[24], v[25], v[22]);
glBegin(GL_TRIANGLE_STRIP);
glVertex3f(bgwidth, bgheight, 0.f);
glVertex3f(bgwidth, -bgheight, 0.f);
glVertex3f(-bgwidth, bgheight, 0.f);
glVertex3f(-bgwidth, -bgheight, 0.f);
glEnd();
}
if (draw_var & 4) { // draw background outline
glColor4f(v[9], v[10], v[11], 1.f);
glBegin(GL_TRIANGLE_STRIP);
glVertex3f(-hwidth - cw, -hheight - cw, 0.f); // 1
glVertex3f(-hwidth - cw, hheight + cw, 0.f); // 2 2---------------4
glVertex3f(-hwidth + cw, hheight - cw, 0.f); // 3 |\ / |
glVertex3f(hwidth + cw, hheight + cw, 0.f); // 4 | 3----------5 |
glVertex3f(hwidth - cw, hheight - cw, 0.f); // 5 | | | |
glVertex3f(hwidth + cw, -hheight - cw, 0.f); // 6 | 9----------7 |
glVertex3f(hwidth - cw, -hheight + cw, 0.f); // 7 |/ \ |
glVertex3f(-hwidth - cw, -hheight - cw, 0.f); // 8 1/8---------------6
glVertex3f(-hwidth + cw, -hheight + cw, 0.f); // 9
glVertex3f(-hwidth + cw, hheight - cw, 0.f); // 3
glEnd();
}
}
if (drawLine) {
float xoff, yoff;
glColor4f(v[9], v[10], v[11], 1.f);
switch (label_connector_mode) {
case 0: {
float hmid = (fabs(dVector[0]) >= .5) ? 0.f : 1.f;
float vmid = (fabs(dVector[1]) >= .5) ? 0.f : 1.f;
float right =
(1.f - hmid) * ((dVector[0] > 0.f) ? 1.f : 0.f) + hmid * .5f;
float top =
(1.f - vmid) * ((dVector[1] > 0.f) ? 1.f : 0.f) + vmid * .5f;
float labx, laby;
xoff = 2.f * (right - .5);
yoff = 2.f * (top - .5);
labx = xoff * hwidth;
laby = yoff * hheight;
drawLine2DCheckZTarget(G, label_z_target, v + 3, pos, cw, labx, laby,
dVectorInPixels[0], dVectorInPixels[1]);
} break;
case 3: {
float hmid = (fabs(dVector[0]) >= .5f) ? 0.f : 1.f;
float vmid = (fabs(dVector[1]) >= .5f) ? 0.f : 1.f;
float right = (1.f - hmid) * ((dVector[0] > 0.f) ? 1.f : 0.f) +
hmid * (.5f + dVector[0]);
float top = (1.f - vmid) * ((dVector[1] > 0.f) ? 1.f : 0.f) +
vmid * (.5f + dVector[1]);
float labx, laby;
xoff = 2.f * (right - .5);
yoff = 2.f * (top - .5);
labx = xoff * hwidth;
laby = yoff * hheight;
drawLine2DCheckZTarget(G, label_z_target, v + 3, pos, cw, labx, laby,
dVectorInPixels[0], dVectorInPixels[1]);
} break;
case 1: {
float drawVectorN[2], absyx, notabsyx, dvxy, dvyx, hdir, vdir;
float labx, laby;
copy2f(dVector, drawVectorN);
normalize2f(drawVectorN);
absyx = fabs(drawVectorN[0]) >= fabs(drawVectorN[1]) ? 1.f : 0.f;
notabsyx = 1.f - absyx;
hdir = 2.f * (((drawVectorN[0] > 0.f) ? 1.f : 0.f) - .5f);
vdir = 2.f * (((drawVectorN[1] > 0.f) ? 1.f : 0.f) - .5f);
dvxy = dVector[0] / dVector[1];
dvyx = dVector[1] / dVector[0];
xoff = (absyx * hdir) + (notabsyx * vdir * dvxy);
yoff = (notabsyx * vdir) + (absyx * hdir * dvyx);
labx = xoff * hwidth;
laby = yoff * hheight;
if ((draw_var & 6) == 2) {
// if ONLY background is drawn in connector_mode 1, then the line
// needs to be clipped so that it is flush to the background
drawLine2DCheckZTargetClip(G, label_z_target, v + 3, pos, cw, 0, 0,
dVectorInPixels[0], dVectorInPixels[1], hwidth, hheight);
} else {
drawLine2DCheckZTarget(G, label_z_target, v + 3, pos, cw, labx, laby,
dVectorInPixels[0], dVectorInPixels[1]);
}
} break;
case 2:
case 4: {
float extLength, rightorig, right, top, xofforig;
short label_connector_mode_4 = (label_connector_mode == 4);
short hmid = 0, vmid = 0;
float labx, laby, extx, exty;
if (label_connector_mode_4) {
hmid = (fabs(dVector[0]) < .5f);
vmid = (fabs(dVector[1]) < .5f);
}
if (font_size < 0.f) {
extLength = -(*(v + 27) * font_size / text_height) / v_scale;
} else {
extLength = *(v + 27) * font_size / text_height;
}
if (hmid) {
rightorig = (.5f + dVector[0]);
right = rightorig;
} else {
rightorig = dVector[0] >= 0.f ? 1.f : 0.f;
right =
rightorig +
(rightorig - .5f) *
CLAMP_VALUE(fabs(2.f * dVector[0]) - 1.f, 0.f,
2.f * extLength * fabs(text_height / (float) text_width));
}
if (vmid) {
top = (.5f + dVector[1]);
} else {
top = (dVector[1] >= 0.f) ? 1.f : 0.f;
}
xofforig = 2. * (rightorig - .5);
xoff = 2.f * (right - .5);
yoff = 2.f * (top - .5);
labx = xofforig * hwidth;
laby = yoff * hheight;
extx = xoff * hwidth;
exty = yoff * hheight;
{ // drawing the triangle filler between the two lines (connector_mode 2
// or 4)
float dirv1[3], dirv2[3], cross[3];
drawLine2DCheckZTargetCross(G, label_z_target, v + 3, pos, cw, extx,
exty, dVectorInPixels[0], dVectorInPixels[1], dirv1);
drawLine2DCross(cw, extx, exty, labx, laby, dirv2);
dirv1[0] = -dirv1[0];
dirv1[1] = -dirv1[1]; // switch normal b/c drawLine2DCheckZTargetCross
// call above has target as second
dirv1[2] = dirv2[2] = 0.f;
cross_product3f(dirv1, dirv2, cross);
glBegin(GL_TRIANGLES);
glVertex3f(extx, exty, 0.f);
if (cross[2] < 0.f) {
glVertex3f(extx - dirv1[0], exty - dirv1[1], 0.f);
glVertex3f(extx - dirv2[0], exty - dirv2[1], 0.f);
} else {
glVertex3f(extx + dirv2[0], exty + dirv2[1], 0.f);
glVertex3f(extx + dirv1[0], exty + dirv1[1], 0.f);
}
glEnd();
}
} break;
}
}
}
glDisable(GL_POLYGON_OFFSET_FILL);
ScenePopRasterMatrix(G);
}
#endif
static int lineSegIntersection(
float* p1, float* p2, float* p3, float* p4, float* po)
{
float distAB, theCos, theSin, newX, abpos;
float p2i[2], p3i[2], p4i[2];
if ((p1[0] == p2[0] && p1[1] == p2[1]) || (p3[0] == p4[0] && p3[1] == p4[1]))
return 0;
if ((p1[0] == p3[0] && p1[1] == p3[1]) ||
(p2[0] == p3[0] && p2[1] == p3[1]) ||
(p1[0] == p4[0] && p1[1] == p4[1]) ||
(p2[0] == p4[0] && p2[1] == p4[1])) {
return 0;
}
p2i[0] = p2[0];
p2i[1] = p2[1];
p3i[0] = p3[0];
p3i[1] = p3[1];
p4i[0] = p4[0];
p4i[1] = p4[1];
p2i[0] -= p1[0];
p2i[1] -= p1[1];
p3i[0] -= p1[0];
p3i[1] -= p1[1];
p4i[0] -= p1[0];
p4i[1] -= p1[1];
distAB = sqrt(p2i[0] * p2i[0] + p2i[1] * p2i[1]);
theCos = p2i[0] / distAB;
theSin = p2i[1] / distAB;
newX = p3i[0] * theCos + p3i[1] * theSin;
p3i[1] = p3i[1] * theCos - p3i[0] * theSin;
p3i[0] = newX;
newX = p4i[0] * theCos + p4i[1] * theSin;
p4i[1] = p4i[1] * theCos - p4i[0] * theSin;
p4i[0] = newX;
if ((p3i[1] < 0. && p4i[1] < 0.) || (p3i[1] >= 0. && p4i[1] >= 0.))
return 0;
abpos = p4i[0] + (p3i[0] - p4i[0]) * p4i[1] / (p4i[1] - p3i[1]);
if (abpos < 0. || abpos > distAB)
return 0;
po[0] = p1[0] + abpos * theCos;
po[1] = p1[1] + abpos * theSin;
return 1;
}
typedef struct lineSeg_s {
float p1[2];
float p2[2];
} lineSeg_t;
static void RepLabelRenderRayBackground(
RepLabel* I, RenderInfo* info, float* v, int draw_var)
{
CRay* ray = info->ray;
PyMOLGlobals* G = I->G;
float* screenWorldOffset = TextGetScreenWorldOffset(G);
float text_width = TextGetWidth(G), text_height = TextGetHeight(G);
float* indentFactor = TextGetIndentFactor(G);
float endpointOnBBX[3], tmp3f[3];
float torigCenter[3], tTarget[4], tVec[3], dVectorInPixels[2], dVector[2];
float xoff = 0.f, yoff = 0.f;
float doNotDraw;
float v_scale;
short drawLine = true;
float xn[3], yn[3], zn[3];
float connector_width = *(v + 26);
float* RotMatrix = glm::value_ptr(ray->Rotation);
lineSeg_t labelTop, labelBottom, labelLeft, labelRight;
short label_con_flat = 128 & (int) *(v + 21);
short label_connector_mode = (draw_var & 8) ? 1
: (draw_var & 16) ? 2
: (draw_var & 32) ? 3
: (draw_var & 64) ? 4
: 0;
float font_size = SettingGet_f(
G, I->cs->Setting.get(), I->obj->Setting.get(), cSetting_label_size);
float tCenter[4], sCenter[4], sTarget[4];
short relativeMode = ((short) *(v + 15));
copy3f(TextGetLabelPushPos(G), tCenter);
copy3f(tCenter, torigCenter);
TextSetPosNColor(G, tCenter, v);
RayGetScaledAllAxesAtPoint(ray, tCenter, xn, yn, zn);
copy3f(v + 3, tTarget);
tCenter[3] = 1.f;
tTarget[3] = 1.f;
v_scale = RayGetScreenVertexScale(ray, torigCenter);
RayGetScreenVertex(ray, tCenter, sCenter);
if (relativeMode & 8) { // label_z_target, adjust z to target
RayGetScreenVertex(ray, tTarget, sTarget);
} else {
// need to bring tTarget into same z as tCenter to measure
copy3f(tTarget, sTarget);
sTarget[3] = 1.f;
RayAdjustZtoScreenZofPoint(ray, sTarget, tCenter);
RayGetScreenVertex(ray, sTarget, sTarget);
}
subtract3f(sTarget, sCenter, tVec);
dVectorInPixels[0] = (tVec[0] - screenWorldOffset[0]) / v_scale;
dVectorInPixels[1] = (tVec[1] - screenWorldOffset[1]) / v_scale;
dVector[0] = (dVectorInPixels[0] / text_width) - indentFactor[0];
dVector[1] = (dVectorInPixels[1] / text_height) - indentFactor[1];
doNotDraw =
((fabs(dVector[0])) <= .5f && (fabs(dVector[1])) <= .5f) ? 1.f : 0.f;
if (!(draw_var & 1) || doNotDraw > .5f)
drawLine = false;
mult3f(xn,
indentFactor[0] * text_width + 2.f * (screenWorldOffset[0] / v_scale),
tmp3f);
add3f(tmp3f, torigCenter, torigCenter);
mult3f(yn,
indentFactor[1] * text_height + 2.f * (screenWorldOffset[1] / v_scale),
tmp3f);
add3f(tmp3f, torigCenter, torigCenter);
mult3f(zn, -1.f,
tmp3f); // push background back, not sure if this is needed, doesn't hurt
add3f(tmp3f, torigCenter, torigCenter);
if (draw_var & 6) { // draw background or background outline
float tmpf[4][4];
float hwidth = ray->Sampling * text_width / 2.f,
hheight = ray->Sampling * text_height / 2.f;
addXYtoVertex(hwidth, hheight, xn, yn, torigCenter, tmpf[0]);
addXYtoVertex(hwidth, -hheight, xn, yn, torigCenter, tmpf[1]);
addXYtoVertex(-hwidth, hheight, xn, yn, torigCenter, tmpf[2]);
addXYtoVertex(-hwidth, -hheight, xn, yn, torigCenter, tmpf[3]);
if (draw_var & 2) { // draw background
float trans = 1.f - v[22];
float tmpf2[4][4];
float tmpc[4][4];
float lw2;
if (draw_var & 4) {
lw2 = ray->Sampling * connector_width / 2.f;
} else {
lw2 = ray->Sampling;
}
addXYZtoVertex(-lw2, -lw2, -1.f, xn, yn, zn, tmpf[0], tmpf2[0]); // UL
addXYZtoVertex(-lw2, lw2, -1.f, xn, yn, zn, tmpf[1], tmpf2[1]); // LL
addXYZtoVertex(lw2, -lw2, -1.f, xn, yn, zn, tmpf[2], tmpf2[2]); // UR
addXYZtoVertex(lw2, lw2, -1.f, xn, yn, zn, tmpf[3], tmpf2[3]); // LR
MatrixTransformC44f4f(RotMatrix, tmpf[0], tmpc[0]);
MatrixTransformC44f4f(RotMatrix, tmpf[1], tmpc[1]);
MatrixTransformC44f4f(RotMatrix, tmpf[2], tmpc[2]);
MatrixTransformC44f4f(RotMatrix, tmpf[3], tmpc[3]);
tmpc[0][0] = tmpc[1][0];
tmpc[2][0] = tmpc[3][0];
tmpc[0][1] = tmpc[2][1];
tmpc[1][1] = tmpc[3][1];
copy2f(tmpc[0], labelTop.p1);
copy2f(tmpc[2], labelTop.p2);
copy2f(tmpc[3], labelBottom.p1);
copy2f(tmpc[1], labelBottom.p2);
copy2f(tmpc[2], labelLeft.p1);
copy2f(tmpc[3], labelLeft.p2);
copy2f(tmpc[1], labelRight.p1);
copy2f(tmpc[0], labelRight.p2);
ray->triangleTrans3fv(tmpf2[0], tmpf2[1], tmpf2[2], zn, zn, zn, &v[23],
&v[23], &v[23], trans, trans, trans);
ray->setLastToNoLighting(1);
ray->triangleTrans3fv(tmpf2[1], tmpf2[2], tmpf2[3], zn, zn, zn, &v[23],
&v[23], &v[23], trans, trans, trans);
ray->setLastToNoLighting(1);
}
if (draw_var & 4) { // draw background outline
if (label_con_flat) {
float tmpfs[4][4];
float lw = ray->Sampling * connector_width / 2.f, dirv[3];
tmpf[0][3] = tmpf[1][3] = tmpf[2][3] = tmpf[3][3] = 0.f;
MatrixTransformC44f4f(ray->ModelView, tmpf[0], tmpfs[0]);
MatrixTransformC44f4f(ray->ModelView, tmpf[1], tmpfs[1]);
MatrixTransformC44f4f(ray->ModelView, tmpf[2], tmpfs[2]);
MatrixTransformC44f4f(ray->ModelView, tmpf[3], tmpfs[3]);
RayDrawLineAsGeometryWithOffsets(ray, tmpf[2], tmpf[0], tmpfs[2],
tmpfs[0], xn, yn, zn, lw, 1.f, 0.f, v + 9, dirv, 1);
RayDrawLineAsGeometryWithOffsets(ray, tmpf[1], tmpf[0], tmpfs[1],
tmpfs[0], xn, yn, zn, lw, 0.f, 1.f, v + 9, dirv, 1);
RayDrawLineAsGeometryWithOffsets(ray, tmpf[3], tmpf[1], tmpfs[3],
tmpfs[1], xn, yn, zn, lw, 0.f, 1.f, v + 9, dirv, 1);
RayDrawLineAsGeometryWithOffsets(ray, tmpf[3], tmpf[2], tmpfs[3],
tmpfs[2], xn, yn, zn, lw, 1.f, 0.f, v + 9, dirv, 1);
} else {
float lw = connector_width * ray->PixelRadius / 2.f;
ray->sausage3fv(tmpf[0], tmpf[1], lw, v + 9, v + 9);
ray->sausage3fv(tmpf[0], tmpf[2], lw, v + 9, v + 9);
ray->sausage3fv(tmpf[1], tmpf[3], lw, v + 9, v + 9);
ray->sausage3fv(tmpf[2], tmpf[3], lw, v + 9, v + 9);
}
}
}
switch (label_connector_mode) {
case 0: {
float hmid = (fabs(dVector[0]) >= .5) ? 0.f : 1.f;
float vmid = (fabs(dVector[1]) >= .5) ? 0.f : 1.f;
float right = (1.f - hmid) * ((dVector[0] > 0.f) ? 1.f : 0.f) + hmid * .5f;
float top = (1.f - vmid) * ((dVector[1] > 0.f) ? 1.f : 0.f) + vmid * .5f;
xoff = 2.f * (right - .5);
yoff = 2.f * (top - .5);
} break;
case 3: {
short hmid = (fabs(dVector[0]) < 1.f);
short vmid = (fabs(dVector[1]) < 1.f);
float right, top;
if (hmid) {
right = ((1.f + dVector[0]) / 2.f);
} else {
right = ((dVector[0] > 0.f) ? 1.f : 0.f);
}
if (vmid) {
top = ((1.f + dVector[1]) / 2.f);
} else {
top = ((dVector[1] > 0.f) ? 1.f : 0.f);
}
xoff = 2.f * (right - .5);
yoff = 2.f * (top - .5);
} break;
case 1: {
float drawVectorN[2], absyx, notabsyx, dvxy, dvyx, hdir, vdir;
copy2f(dVector, drawVectorN);
normalize2f(drawVectorN);
absyx = fabs(drawVectorN[0]) >= fabs(drawVectorN[1]) ? 1.f : 0.f;
notabsyx = 1.f - absyx;
hdir = 2.f * (((drawVectorN[0] > 0.f) ? 1.f : 0.f) - .5f);
vdir = 2.f * (((drawVectorN[1] > 0.f) ? 1.f : 0.f) - .5f);
dvxy = dVector[0] / dVector[1];
dvyx = dVector[1] / dVector[0];
xoff = (absyx * hdir) + (notabsyx * vdir * dvxy);
yoff = (notabsyx * vdir) + (absyx * hdir * dvyx);
} break;
case 2:
case 4:
if (drawLine) {
float extLength, rightorig, right, top, xofforig;
float endpointExtendedOffBBX[3];
short label_connector_mode_4 = (label_connector_mode == 4);
short hmid = 0, vmid = 0;
if (label_connector_mode_4) {
hmid = (fabs(dVector[0]) < 1.);
vmid = (fabs(dVector[1]) < 1.);
}
if (font_size < 0.f) {
extLength = -(*(v + 27) * font_size / text_height) / v_scale;
} else {
extLength = *(v + 27) * font_size / text_height;
}
if (hmid) {
rightorig = ((1.f + dVector[0]) / 2.f);
right = rightorig;
} else {
rightorig = dVector[0] >= 0.f ? 1.f : 0.f;
right = rightorig + (rightorig - .5f) *
CLAMP_VALUE(fabs(dVector[0] * 2.f) - 1.f, 0.f,
2.f * extLength *
fabs(text_height / (float) text_width));
}
if (vmid) {
top = ((1.f + dVector[1]) / 2.f);
} else {
top = dVector[1] >= 0.f ? 1.f : 0.f;
}
xofforig = 2. * (rightorig - .5);
xoff = 2.f * (right - .5);
yoff = 2.f * (top - .5);
mult3f(xn, xofforig * text_width, endpointOnBBX);
mult3f(yn, yoff * text_height, tmp3f);
add3f(tmp3f, endpointOnBBX, endpointOnBBX);
add3f(torigCenter, endpointOnBBX, endpointOnBBX);
mult3f(xn, xoff * text_width, endpointExtendedOffBBX);
mult3f(yn, yoff * text_height, tmp3f);
add3f(tmp3f, endpointExtendedOffBBX, endpointExtendedOffBBX);
add3f(torigCenter, endpointExtendedOffBBX, endpointExtendedOffBBX);
if (label_con_flat) {
float tmpf[3][4];
float tmpfs[3][4];
float dirv1[3], dirv2[3], cross[3], pt[3][3];
copy3f(v + 3, tmpf[0]);
copy3f(endpointExtendedOffBBX, tmpf[1]);
copy3f(endpointOnBBX, tmpf[2]);
tmpf[0][3] = tmpf[1][3] = tmpf[2][3] = 0.f;
MatrixTransformC44f4f(ray->ModelView, tmpf[0], tmpfs[0]);
MatrixTransformC44f4f(ray->ModelView, tmpf[1], tmpfs[1]);
MatrixTransformC44f4f(ray->ModelView, tmpf[2], tmpfs[2]);
RayDrawLineAsGeometryWithOffsets(ray, tmpf[0], tmpf[1], tmpfs[0],
tmpfs[1], xn, yn, zn, connector_width, 0.f, 0.f, v + 9, dirv1, 1);
RayDrawLineAsGeometryWithOffsets(ray, tmpf[1], tmpf[2], tmpfs[1],
tmpfs[2], xn, yn, zn, connector_width, 0.f, 0.f, v + 9, dirv2, 1);
/* need to draw triangle to fill in gap */
dirv1[2] = dirv2[2] = 0.f;
cross_product3f(dirv1, dirv2, cross);
copy3f(endpointExtendedOffBBX, pt[0]);
copy3f(endpointExtendedOffBBX, pt[1]);
copy3f(endpointExtendedOffBBX, pt[2]);
if (cross[2] < 0.f) {
addXYtoVertex(dirv1[0], dirv1[1], xn, yn, pt[1], pt[1]);
addXYtoVertex(dirv2[0], dirv2[1], xn, yn, pt[2], pt[2]);
} else {
addXYtoVertex(-dirv2[0], -dirv2[1], xn, yn, pt[1], pt[1]);
addXYtoVertex(-dirv1[0], -dirv1[1], xn, yn, pt[2], pt[2]);
}
ray->triangle3fv(pt[0], pt[1], pt[2], zn, zn, zn, v + 9, v + 9, v + 9);
ray->setLastToNoLighting(1);
} else {
float lw = connector_width * ray->PixelRadius / 2.f;
ray->sausage3fv(v + 3, endpointExtendedOffBBX, lw, v + 9, v + 9);
ray->sausage3fv(
endpointExtendedOffBBX, endpointOnBBX, lw, v + 9, v + 9);
}
drawLine = 0;
}
break;
}
if (drawLine) {
mult3f(xn, xoff * text_width, endpointOnBBX);
mult3f(yn, yoff * text_height, tmp3f);
add3f(tmp3f, endpointOnBBX, endpointOnBBX);
add3f(torigCenter, endpointOnBBX, endpointOnBBX);
if (label_con_flat) {
unsigned char drawDefaultLine = true;
if ((draw_var & 2) && (label_connector_mode > 0)) { // draw background
float tmpff[3][4];
float tmpfs[3][4];
float tmpfc[4][4];
float dirv1[3], dirv2[3];
float cw = connector_width;
float pt1E[3], pt2E[3];
float tmpV[3], tmpV2[3], tmpV3[3], tmpV4[3], linev2[3];
float nzn[3] = {0.f, 0.f, 1.f};
lineSeg_t l1, l2;
float tmptrn[4][4];
float isec1[3], isec2[3];
int l1V = 0, l2V = 0;
copy3f(v + 3, tmpff[0]);
copy3f(endpointOnBBX, tmpff[1]);
copy3f(torigCenter, tmpff[2]);
tmpff[0][3] = tmpff[1][3] = tmpff[2][3] = 0.f;
MatrixTransformC44f4f(ray->ModelView, tmpff[0], tmpfs[0]);
MatrixTransformC44f4f(ray->ModelView, tmpff[1], tmpfs[1]);
MatrixTransformC44f4f(ray->ModelView, tmpff[2], tmpfs[2]);
copy3f(tmpff[0], pt1E);
copy3f(tmpff[1], pt2E);
subtract3f(tmpfs[0], tmpfs[1], tmpV);
subtract3f(tmpfs[1], tmpfs[2], tmpV2);
copy3f(tmpV2, linev2);
normalize3f(linev2);
mult3f(linev2, cw * 10.0f, linev2);
cross_product3f(tmpV, nzn, tmpV3);
cross_product3f(tmpV2, nzn, tmpV4);
normalize3f(tmpV3);
normalize3f(tmpV4);
mult3f(tmpV3, cw, dirv1);
mult3f(tmpV4, cw, dirv2);
addXYtoVertex(dirv2[0], dirv2[1], xn, yn, tmpff[1], tmptrn[0]);
addXYtoVertex(linev2[0], linev2[1], xn, yn, tmptrn[0], tmptrn[0]);
addXYtoVertex(-dirv2[0], -dirv2[1], xn, yn, tmpff[1], tmptrn[1]);
addXYtoVertex(linev2[0], linev2[1], xn, yn, tmptrn[1], tmptrn[1]);
addXYtoVertex(dirv2[0], dirv2[1], xn, yn, tmpff[2], tmptrn[2]);
addXYtoVertex(-dirv2[0], -dirv2[1], xn, yn, tmpff[2], tmptrn[3]);
MatrixTransformC44f4f(RotMatrix, tmptrn[0], tmpfc[0]);
MatrixTransformC44f4f(RotMatrix, tmptrn[1], tmpfc[1]);
MatrixTransformC44f4f(RotMatrix, tmptrn[2], tmpfc[2]);
MatrixTransformC44f4f(RotMatrix, tmptrn[3], tmpfc[3]);
copy2f(tmpfc[0], l1.p1);
copy2f(tmpfc[1], l2.p1);
copy2f(tmpfc[2], l1.p2);
copy2f(tmpfc[3], l2.p2);
isec1[0] = isec1[1] = isec2[0] = isec2[1] = 0.f;
isec1[2] = isec2[2] = tmpfc[3][2];
if (lineSegIntersection(
labelTop.p1, labelTop.p2, l1.p1, l1.p2, isec1)) {
l1V = 1;
} else if (lineSegIntersection(
labelRight.p1, labelRight.p2, l1.p1, l1.p2, isec1)) {
l1V = 2;
} else if (lineSegIntersection(
labelBottom.p1, labelBottom.p2, l1.p1, l1.p2, isec1)) {
l1V = 3;
} else if (lineSegIntersection(
labelLeft.p1, labelLeft.p2, l1.p1, l1.p2, isec1)) {
l1V = 4;
}
if (lineSegIntersection(
labelTop.p1, labelTop.p2, l2.p1, l2.p2, isec2)) {
l2V = 1;
} else if (lineSegIntersection(
labelRight.p1, labelRight.p2, l2.p1, l2.p2, isec2)) {
l2V = 2;
} else if (lineSegIntersection(
labelBottom.p1, labelBottom.p2, l2.p1, l2.p2, isec2)) {
l2V = 3;
} else if (lineSegIntersection(
labelLeft.p1, labelLeft.p2, l2.p1, l2.p2, isec2)) {
l2V = 4;
}
// Both lines run through one side
if ((l1V && l2V)) {
drawDefaultLine = false;
if (l1V == l2V) {
float isec1w[3], isec2w[3];
MatrixInvTransformC44fAs33f3f(RotMatrix, isec1, isec1w);
MatrixInvTransformC44fAs33f3f(RotMatrix, isec2, isec2w);
addXYtoVertex(dirv1[0], dirv1[1], xn, yn, tmpff[0], pt1E);
addXYtoVertex(-dirv1[0], -dirv1[1], xn, yn, tmpff[0], pt2E);
ray->triangle3fv(
pt1E, pt2E, isec1w, zn, zn, zn, v + 9, v + 9, v + 9);
ray->triangle3fv(
pt2E, isec1w, isec2w, zn, zn, zn, v + 9, v + 9, v + 9);
} else { // (l1V != l2V)
float isecc[3];
float isec1w[3], isec2w[3], iseccw[3];
isecc[2] = isec1[2];
// Find the corner
if ((l1V == 1 && l2V == 2) || (l1V == 2 && l2V == 1)) { // UR
isecc[0] = labelTop.p1[0];
isecc[1] = labelTop.p1[1];
} else if ((l1V == 2 && l2V == 3) || (l1V == 3 && l2V == 2)) { // LR
isecc[0] = labelBottom.p2[0];
isecc[1] = labelBottom.p2[1];
} else if ((l1V == 3 && l2V == 4) || (l1V == 4 && l2V == 3)) { // LL
isecc[0] = labelBottom.p1[0];
isecc[1] = labelBottom.p1[1];
} else if ((l1V == 4 && l2V == 1) || (l1V == 1 && l2V == 4)) { // UL
isecc[0] = labelTop.p2[0];
isecc[1] = labelTop.p2[1];
}
MatrixInvTransformC44fAs33f3f(RotMatrix, isec1, isec1w);
MatrixInvTransformC44fAs33f3f(RotMatrix, isec2, isec2w);
MatrixInvTransformC44fAs33f3f(RotMatrix, isecc, iseccw);
addXYtoVertex(dirv1[0], dirv1[1], xn, yn, tmpff[0], pt1E);
addXYtoVertex(-dirv1[0], -dirv1[1], xn, yn, tmpff[0], pt2E);
ray->triangle3fv(
isec1w, pt1E, iseccw, zn, zn, zn, v + 9, v + 9, v + 9);
ray->triangle3fv(
pt1E, iseccw, pt2E, zn, zn, zn, v + 9, v + 9, v + 9);
ray->triangle3fv(
iseccw, pt2E, isec2w, zn, zn, zn, v + 9, v + 9, v + 9);
}
}
}
if (drawDefaultLine) {
float tmpf[2][4];
float tmpfs[2][4], dirv[3];
copy3f(v + 3, tmpf[0]);
copy3f(endpointOnBBX, tmpf[1]);
tmpf[0][3] = tmpf[1][3] = 0.f;
MatrixTransformC44f4f(ray->ModelView, tmpf[0], tmpfs[0]);
MatrixTransformC44f4f(ray->ModelView, tmpf[1], tmpfs[1]);
RayDrawLineAsGeometryWithOffsets(ray, tmpf[0], tmpf[1], tmpfs[0],
tmpfs[1], xn, yn, zn, connector_width, 0.f, 0.f, v + 9, dirv, 1);
}
} else {
ray->sausage3fv(v + 3, endpointOnBBX,
connector_width * ray->PixelRadius / 2.f, v + 9, v + 9);
}
}
}
static void RepLabelRenderRay(RepLabel* I, RenderInfo* info)
{
#ifndef _PYMOL_NO_RAY
PyMOLGlobals* G = I->G;
CRay* ray = info->ray;
int font_id = SettingGet_i(
G, I->cs->Setting.get(), I->obj->Setting.get(), cSetting_label_font_id);
float font_size = SettingGet_f(
G, I->cs->Setting.get(), I->obj->Setting.get(), cSetting_label_size);
if (I->N != 0) {
TextSetOutlineColor(G, I->OutlineColor);
for (int c = 0; c < I->N; c++) {
auto& l = I->L[c];
if (l) {
float xn[3], yn[3], tCenter[3], offpt[3];
auto relativeMode = I->labelV[c].getRelativeMode();
auto draw_var = I->labelV[c].getDrawVar();
std::copy_n(I->labelV[c].screen_point, 3, tCenter);
SceneGetCenter(G, offpt);
RayGetScaledAxes(ray, xn, yn);
auto st = LexStr(G, l);
TextSetLabelBkgrdInfo(G, I->labelV[c].spacing,
I->labelV[c].justification, I->labelV[c].padding);
if (relativeMode & 8) { // label_z_target, adjust z to target
TextGetLabelPos(G)[0] = (SceneGetDepth(G, I->labelV[c].coord) - .5) * 2.f;
TextSetLabelPosIsSet(G, 1);
} else if (relativeMode & 6) { // label_relative_mode 1 or 2, i.e.,
// screen stabilized, adjust z
if (relativeMode & 4) { // label_relative_mode = 2
tCenter[0] = (tCenter[0] / ray->Width) * 2.f - 1.f;
tCenter[1] = (tCenter[1] / ray->Height) * 2.f - 1.f;
}
TextSetLabelPos(G, tCenter);
TextSetLabelPosIsSet(G, 2);
float tmp3f[3];
mult3f(xn, tCenter[0] * ray->Width, tmp3f);
add3f(tmp3f, offpt, offpt);
mult3f(yn, tCenter[1] * ray->Height, tmp3f);
add3f(tmp3f, offpt, offpt);
copy3f(offpt, tCenter);
} else {
TextSetLabelPosIsSet(G, 0);
}
TextSetPosNColor(G, tCenter, I->labelV[c].color);
TextRenderRay(G, ray, font_id, st, font_size, I->labelV[c].position,
(draw_var ? 1 : 0), I->labelV[c].getRelativeMode());
if (draw_var) {
RepLabelRenderRayBackground(I, info, I->labelV[c].color, draw_var);
}
}
l++;
}
}
#endif
}
void RepLabelPick(RepLabel* I, RenderInfo* info)
{
auto* G = I->G;
auto* pick = info->pick;
int pick_labels = SettingGet_b(
G, I->cs->Setting.get(), I->obj->Setting.get(), cSetting_pick_labels);
if (!pick_labels)
return;
auto float_text = SettingGet<bool>(
G, I->cs->Setting.get(), I->obj->Setting.get(), cSetting_float_labels);
if (I->shaderCGO) {
if (float_text) {
glDisable(GL_DEPTH_TEST);
}
CGORenderPicking(I->shaderCGO, info, &I->context, I->cs->Setting.get(),
I->obj->Setting.get());
if (float_text) {
glEnable(GL_DEPTH_TEST);
}
return;
}
Pickable* p = I->P;
TextSetIsPicking(G, true);
SceneSetupGLPicking(G);
if (I->N == 0) {
TextSetIsPicking(G, false);
}
int screenwidth, screenheight;
if (float_text) {
glDisable(GL_DEPTH_TEST);
}
if (!I->shaderCGO) {
SceneGetWidthHeight(G, &screenwidth, &screenheight);
}
auto font_id = SettingGet<int>(
G, I->cs->Setting.get(), I->obj->Setting.get(), cSetting_label_font_id);
auto font_size = SettingGet<float>(
G, I->cs->Setting.get(), I->obj->Setting.get(), cSetting_label_size);
for (int c = 0; c < I->N; c++) {
auto& l = I->L[c];
if (l) {
float xn[3], yn[3], tCenterPt[3], offpt[3];
auto relativeMode = I->labelV[c].getRelativeMode();
std::copy_n(I->labelV[c].screen_point, 3, tCenterPt);
SceneGetCenter(G, offpt);
TextSetPosNColor(G, offpt, I->labelV[c].color);
SceneGetScaledAxes(G, I->obj, xn, yn);
if (!I->shaderCGO) {
if (relativeMode & 2) { // label_relative_mode = 1
float tmp3f[3];
mult3f(xn, tCenterPt[0] * screenwidth / 2.f, tmp3f);
add3f(tmp3f, offpt, offpt);
mult3f(yn, tCenterPt[1] * screenheight / 2.f, tmp3f);
add3f(tmp3f, offpt, offpt);
copy3f(offpt, tCenterPt);
} else if (relativeMode & 4) { // label_relative_mode = 2
float tmp3f[3];
mult3f(xn, (tCenterPt[0] - (.5f * screenwidth)), tmp3f);
add3f(tmp3f, offpt, offpt);
mult3f(yn, (tCenterPt[1] - (.5f * screenheight)), tmp3f);
add3f(tmp3f, offpt, offpt);
copy3f(offpt, tCenterPt);
}
}
TextSetPosNColor(G, tCenterPt, I->labelV[c].color);
TextSetTargetPos(G, I->labelV[c].coord);
TextSetLabelBkgrdInfo(G, I->labelV[c].spacing,
I->labelV[c].justification, I->labelV[c].padding);
if (p) {
p++;
AssignNewPickColor(nullptr, pick, TextGetColorUChar4uv(G),
&I->context, p->index, p->bond);
}
TextSetColorFromUColor(G);
auto st = LexStr(G, l);
if (!TextRenderOpenGL(G, info, font_id, st, font_size,
I->labelV[c].position, false,
I->labelV[c].getRelativeMode(), 1,
I->shaderCGO)) {
TextSetIsPicking(G, false);
return;
}
}
}
if (float_text) {
glEnable(GL_DEPTH_TEST);
}
TextSetIsPicking(G, false);
}
void RepLabelRenderImmediate(RepLabel* I, RenderInfo* info)
{
auto G = I->G;
auto font_id = SettingGet_i(
G, I->cs->Setting.get(), I->obj->Setting.get(), cSetting_label_font_id);
auto font_size = SettingGet_f(
G, I->cs->Setting.get(), I->obj->Setting.get(), cSetting_label_size);
auto float_text = SettingGet<bool>(
G, I->cs->Setting.get(), I->obj->Setting.get(), cSetting_float_labels);
CGO* connectorCGO = nullptr;
float xn[3] = {1.0F, 0.0F, 0.0F};
float yn[3] = {0.0F, 1.0F, 0.0F};
int pre_use_shaders = info->use_shaders;
Pickable* p = I->P;
CGOFree(I->shaderCGO);
if (float_text) {
glDisable(GL_DEPTH_TEST);
}
#ifndef PURE_OPENGL_ES_2
if (!info->line_lighting) {
glDisable(GL_LIGHTING);
}
#endif
TextSetOutlineColor(G, I->OutlineColor);
auto* PmvMatrix = SceneGetPmvMatrix(G);
int screenwidth, screenheight;
SceneGetWidthHeight(G, &screenwidth, &screenheight);
MatrixInvTransformC44fAs33f3f(PmvMatrix, xn, xn);
MatrixInvTransformC44fAs33f3f(PmvMatrix, yn, yn);
normalize3f(xn);
normalize3f(yn);
bool has_connector{};
for (int c = 0; c < I->N; c++) {
auto& l = I->L[c];
if (l) {
float tCenterPt[3], offpt[3];
auto relativeMode = I->labelV[c].getRelativeMode();
auto draw_var = I->labelV[c].getDrawVar();
std::copy_n(I->labelV[c].screen_point, 3, tCenterPt);
SceneGetCenter(G, offpt);
TextSetPosNColor(G, offpt, I->labelV[c].color);
SceneGetScaledAxes(G, I->obj, xn, yn);
if (relativeMode & 2) { // label_relative_mode = 1
float tmp3f[3];
mult3f(xn, tCenterPt[0] * screenwidth / 2.f, tmp3f);
add3f(tmp3f, offpt, offpt);
mult3f(yn, tCenterPt[1] * screenheight / 2.f, tmp3f);
add3f(tmp3f, offpt, offpt);
copy3f(offpt, tCenterPt);
} else if (relativeMode & 4) { // label_relative_mode = 2
float tmp3f[3];
mult3f(xn, (tCenterPt[0] - .5f * screenwidth), tmp3f);
add3f(tmp3f, offpt, offpt);
mult3f(yn, (tCenterPt[1] - .5f * screenheight), tmp3f);
add3f(tmp3f, offpt, offpt);
copy3f(offpt, tCenterPt);
}
if (p) {
p++;
}
TextSetPosNColor(G, tCenterPt, I->labelV[c].color);
TextSetTargetPos(G, I->labelV[c].coord);
auto st = LexStr(G, l);
TextSetLabelBkgrdInfo(G, I->labelV[c].spacing, I->labelV[c].justification,
I->labelV[c].padding);
if (relativeMode & 8) { // label_z_target, adjust z to target
TextGetLabelPos(G)[0] =
(SceneGetDepth(G, I->labelV[c].coord) - .5) * 2.f;
TextSetLabelPosIsSet(G, 1);
} else if (relativeMode & 6) { // label_relative_mode 1 or 2, i.e.,
// screen stabilized, adjust z
TextSetLabelPos(G, I->labelV[c].screen_point);
TextSetLabelPosIsSet(G, 2);
#ifndef PURE_OPENGL_ES_2
glDisable(GL_FOG);
#endif
} else {
TextSetLabelPosIsSet(G, 0);
}
#ifndef PURE_OPENGL_ES_2
glPushMatrix();
#endif
if (!TextRenderOpenGL(G, info, font_id, st, font_size,
I->labelV[c].position, (draw_var ? 1 : 0),
I->labelV[c].getRelativeMode(), false, I->shaderCGO)) {
CGOFree(connectorCGO);
return;
}
if (draw_var) {
float* screenWorldOffset = TextGetScreenWorldOffset(G);
float text_width = TextGetWidth(G);
float text_height = TextGetHeight(G);
float* indentFactor = TextGetIndentFactor(G);
auto* RotMatrix = SceneGetMatrix(G);
#ifndef PURE_OPENGL_ES_2
RepLabelRenderBackgroundInImmediate(G, I, I->labelV[c].color,
draw_var, tCenterPt, relativeMode, xn, yn, PmvMatrix, RotMatrix,
screenwidth, screenheight, screenWorldOffset, indentFactor,
text_width, text_height, font_size);
#endif
}
#ifdef PURE_OPENGL_ES_2
if (float_text && draw_var) {
TextRenderOpenGL(G, info, font_id, st, font_size, I->labelV[c].position,
1, I->labelV[c].getRelativeMode(), 1, I->shaderCGO);
}
#else
glPopMatrix();
{
// for now, render text twice in immediate mode, some cards
// don't handle z-buffer offset properly, before, only did this
// when float_text && draw_var
glPushMatrix();
TextRenderOpenGL(G, info, font_id, st, font_size, I->labelV[c].position,
1, I->labelV[c].getRelativeMode(), 1, I->shaderCGO);
glPopMatrix();
}
#endif
if (relativeMode & 6) { // label_relative_mode 1 or 2, i.e., screen
// stabilized, adjust z
#ifndef PURE_OPENGL_ES_2
glEnable(GL_FOG);
#endif
}
}
}
if (!has_connector) {
CGOFree(connectorCGO);
}
if (connectorCGO) {
CGOEnd(connectorCGO);
CGOStop(connectorCGO);
}
#ifndef PURE_OPENGL_ES_2
glEnable(GL_LIGHTING);
#endif
glEnable(GL_BLEND);
if (float_text) {
glEnable(GL_DEPTH_TEST);
}
}
static void RepLabelGenerateShaderCGO(RepLabel* I, RenderInfo* info)
{
auto* G = I->G;
CGO* cgo = CGONew(G);
auto font_id = SettingGet<int>(
G, I->cs->Setting.get(), I->obj->Setting.get(), cSetting_label_font_id);
auto font_size = SettingGet<float>(
G, I->cs->Setting.get(), I->obj->Setting.get(), cSetting_label_size);
#ifdef PURE_OPENGL_ES_2
auto float_text = SettingGet<bool>(
G, I->cs->Setting.get(), I->obj->Setting.get(), cSetting_float_labels);
#endif
I->shaderCGO = CGONew(G);
I->shaderCGO->use_shader = true;
TextSetOutlineColor(G, I->OutlineColor);
CGO* connectorCGO = nullptr;
if (I->N) {
connectorCGO = CGONew(G);
CGOBegin(connectorCGO, GL_LINES);
}
bool has_connector{};
Pickable* p = I->P;
for (int c = 0; c < I->N; c++) {
auto& l = I->L[c];
if (l) {
float tCenterPt[3], offpt[3];
auto relativeMode = I->labelV[c].getRelativeMode();
auto draw_var = I->labelV[c].getDrawVar();
std::copy_n(I->labelV[c].screen_point, 3, tCenterPt);
SceneGetCenter(G, offpt);
TextSetPosNColor(G, offpt, I->labelV[c].color);
float xn[3];
float yn[3];
SceneGetScaledAxes(G, I->obj, xn, yn);
if (p) {
p++;
CGOPickColor(I->shaderCGO, p->index, p->bond);
}
TextSetPosNColor(G, tCenterPt, I->labelV[c].color);
TextSetTargetPos(G, I->labelV[c].coord);
auto st = LexStr(G, l);
TextSetLabelBkgrdInfo(G, I->labelV[c].spacing, I->labelV[c].justification,
I->labelV[c].padding);
if (relativeMode & 8) { // label_z_target, adjust z to target
TextGetLabelPos(G)[0] = (SceneGetDepth(G, I->labelV[c].coord) - .5) * 2.f;
TextSetLabelPosIsSet(G, 1);
} else if (relativeMode & 6) { // label_relative_mode 1 or 2, i.e.,
// screen stabilized, adjust z
TextSetLabelPos(G, I->labelV[c].screen_point);
TextSetLabelPosIsSet(G, 2);
} else {
TextSetLabelPosIsSet(G, 0);
}
if (!TextRenderOpenGL(G, info, font_id, st, font_size,
I->labelV[c].position, (draw_var ? 1 : 0),
I->labelV[c].getRelativeMode(), true,
I->shaderCGO)) {
CGOFree(connectorCGO);
return;
}
if (draw_var) {
float* screenWorldOffset = TextGetScreenWorldOffset(G);
float text_width = TextGetWidth(G);
float text_height = TextGetHeight(G);
float* indentFactor = TextGetIndentFactor(G);
CGODrawConnector(connectorCGO, I->labelV[c].coord,
I->labelV[c].screen_point, text_width, text_height, indentFactor,
screenWorldOffset, I->labelV[c].connector_color,
I->labelV[c].getRelativeMode(), draw_var,
I->labelV[c].bg_alpha, I->labelV[c].bg_color,
I->labelV[c].connector_ext_len * font_size / text_height,
I->labelV[c].connector_width);
has_connector = 1;
}
#ifdef PURE_OPENGL_ES_2
if (float_text && draw_var) {
TextRenderOpenGL(G, info, font_id, st, font_size, I->labelV[c].position,
1, I->labelV[c].getRelativeMode(), 1, I->shaderCGO);
}
#endif
}
}
if (!has_connector) {
CGOFree(connectorCGO);
}
if (connectorCGO) {
CGOEnd(connectorCGO);
CGOStop(connectorCGO);
}
CGO* totalCGO = nullptr;
CGOStop(I->shaderCGO);
CGO* tmpCGO = CGONew(G);
CGOEnable(tmpCGO, GL_LABEL_SHADER);
CGOSpecial(tmpCGO, SET_LABEL_SCALE_UNIFORMS);
auto* labelCGO = CGOConvertToLabelShader(I->shaderCGO, tmpCGO);
CGOAppendNoStop(tmpCGO, labelCGO);
CGOFreeWithoutVBOs(labelCGO);
labelCGO = tmpCGO;
if (!labelCGO) {
return;
}
CGOFree(I->shaderCGO);
if (connectorCGO) {
CGO* tmpCGO = CGOOptimizeConnectors(connectorCGO, 0);
CGOFree(connectorCGO);
connectorCGO = tmpCGO;
// need to render connector/backgrounds first
totalCGO = CGONew(G);
CGOEnable(totalCGO, GL_LABEL_FLOAT_TEXT);
CGOEnable(totalCGO, GL_CONNECTOR_SHADER);
#ifndef PURE_OPENGL_ES_2
CGODisable(totalCGO, GL_LIGHTING);
#endif
CGOAppendNoStop(totalCGO, connectorCGO);
CGOFreeWithoutVBOs(connectorCGO);
CGODisable(totalCGO, GL_CONNECTOR_SHADER);
CGOAppendNoStop(totalCGO, labelCGO);
CGOFreeWithoutVBOs(labelCGO);
CGODisable(totalCGO, GL_LABEL_FLOAT_TEXT);
CGOStop(totalCGO);
} else {
totalCGO = CGONew(G);
CGOEnable(totalCGO, GL_LABEL_FLOAT_TEXT);
CGOAppendNoStop(totalCGO, labelCGO);
CGODisable(totalCGO, GL_LABEL_FLOAT_TEXT);
CGODisable(totalCGO, GL_LABEL_SHADER);
CGOStop(totalCGO);
CGOFreeWithoutVBOs(labelCGO);
}
I->shaderCGO = totalCGO;
I->shaderCGO->use_shader = true;
}
void RepLabelRenderShader(RepLabel* I, RenderInfo* info)
{
auto pre_use_shaders = info->use_shaders;
info->use_shaders = true;
if (!I->shaderCGO) {
RepLabelGenerateShaderCGO(I, info);
}
if (I->shaderCGO) {
info->texture_font_size = I->texture_font_size;
CGORender(I->shaderCGO, nullptr, nullptr, nullptr, info, I);
return;
}
if (I->shaderCGO) {
CGORender(I->shaderCGO, nullptr, nullptr, nullptr, info, I);
}
info->use_shaders = pre_use_shaders;
}
void RepLabel::render(RenderInfo* info)
{
auto I = this;
CRay* ray = info->ray;
auto pick = info->pick;
auto font_id = SettingGet<int>(
G, I->cs->Setting.get(), I->obj->Setting.get(), cSetting_label_font_id);
auto font_size = SettingGet<float>(
G, I->cs->Setting.get(), I->obj->Setting.get(), cSetting_label_size);
if (!(ray || pick) && info->pass != RenderPass::Transparent)
return;
if (I->MaxInvalid >= cRepInvRep) {
return;
}
font_id = SettingCheckFontID(
G, I->cs->Setting.get(), I->obj->Setting.get(), font_id);
if (I->shaderCGO && font_size < 0.f) {
int size;
if (InvalidateShaderCGOIfTextureNeedsUpdate(
G, font_size, I->texture_font_size, &size)) {
CGOFree(I->shaderCGO);
I->texture_font_size = size;
}
}
if (I->N == 0) {
return;
}
if (ray) {
RepLabelRenderRay(I, info);
return;
}
if (!(G->HaveGUI && G->ValidContext)) {
return;
}
if (pick) {
RepLabelPick(I, info);
return;
}
auto use_shader = SettingGet<bool>(G, cSetting_use_shaders) &&
G->ShaderMgr->GeometryShadersPresent();
if (!use_shader) {
RepLabelRenderImmediate(I, info);
return;
}
RepLabelRenderShader(I, info);
}
Rep* RepLabelNew(CoordSet* cs, int state)
{
PyMOLGlobals* G = cs->G;
ObjectMolecule* obj;
int c1;
const float* vc;
int label_color;
Pickable* rp = nullptr;
// skip if no labels are visible
if (!cs->hasRep(cRepLabelBit))
return nullptr;
auto I = new RepLabel(cs, state);
obj = cs->Obj;
label_color = SettingGet_i(
G, cs->Setting.get(), obj->Setting.get(), cSetting_label_color);
/* raytracing primitives */
I->L.resize(cs->NIndex);
I->labelV.resize(cs->NIndex);
I->OutlineColor = SettingGet_color(
G, cs->Setting.get(), obj->Setting.get(), cSetting_label_outline_color);
if (SettingGet_b(
G, cs->Setting.get(), obj->Setting.get(), cSetting_pickable)) {
I->P = pymol::malloc<Pickable>(cs->NIndex + 1);
ErrChkPtr(G, I->P);
rp = I->P + 1; /* skip first record! */
}
I->N = 0;
int n = 0;
for (int a = 0; a < cs->NIndex; a++) {
auto a1 = cs->IdxToAtm[a];
auto ai = obj->AtomInfo + a1;
if ((ai->visRep & cRepLabelBit) && (ai->label)) {
int at_label_color =
AtomSettingGetWD(G, ai, cSetting_label_color, label_color);
I->N++;
if ((at_label_color >= 0) || (at_label_color == cColorFront) ||
(at_label_color == cColorBack))
c1 = at_label_color;
else
c1 = ai->color;
/* V - Color, Coordinate, Coordinate + Offset (from
* label_placement_offset), label_position) */
vc = ColorGet(G, c1); /* save new color */
std::copy_n(vc, 3, I->labelV[n].color);
const float* v0 = cs->coordPtr(a);
std::copy_n(v0, 3, I->labelV[n].coord);
{
const float *at_label_pos, *at_label_padding;
const float* con_color;
float label_connector_width, label_connector_ext_length;
int label_connector = 0, label_bg = 0, label_bg_outline = 0,
at_con_color = 0, at_label_relative_mode = 0, at_label_z_target,
label_connector_mode = 0, label_connector_mode_1 = 0,
label_connector_mode_2 = 0, label_connector_mode_3 = 0,
label_connector_mode_4 = 0, ray_label_connector_flat = 0;
float at_label_spacing, at_label_justification, at_label_bkgrd_transp;
short drawConnector, isProjected, isScreenCoord, isPixelCoord;
AtomStateGetSetting_i(G, obj, cs, a, ai, cSetting_label_relative_mode,
&at_label_relative_mode);
if (at_label_relative_mode) {
const float* at_label_screen_point;
AtomStateGetSetting(G, obj, cs, a, ai, cSetting_label_screen_point,
&at_label_screen_point);
std::copy_n(at_label_screen_point, 3, I->labelV[n].screen_point);
RepLabelAdjustScreenZ(G, I->labelV[n].screen_point);
} else {
const float* at_label_place;
AtomStateGetSetting(G, obj, cs, a, ai,
cSetting_label_placement_offset, &at_label_place);
add3f(at_label_place, I->labelV[n].coord, I->labelV[n].screen_point);
}
AtomStateGetSetting_color(
G, obj, cs, a, ai, cSetting_label_connector_color, &at_con_color);
/* behave just like the label color */
if (!((at_con_color >= 0) || (at_con_color == cColorFront) ||
(at_con_color == cColorBack)))
at_con_color = ai->color;
con_color = ColorGet(G, at_con_color);
std::copy_n(con_color, 3, I->labelV[n].connector_color);
AtomStateGetSetting_b(G, obj, cs, a, ai,
cSetting_ray_label_connector_flat, &ray_label_connector_flat);
AtomStateGetSetting_b(
G, obj, cs, a, ai, cSetting_label_bg_outline, &label_bg_outline);
AtomStateGetSetting_b(
G, obj, cs, a, ai, cSetting_label_connector, &label_connector);
AtomStateGetSetting_i(G, obj, cs, a, ai, cSetting_label_connector_mode,
&label_connector_mode);
AtomStateGetSetting_i(
G, obj, cs, a, ai, cSetting_label_z_target, &at_label_z_target);
AtomStateGetSetting(
G, obj, cs, a, ai, cSetting_label_position, &at_label_pos);
std::copy_n(at_label_pos, 3, I->labelV[n].position);
AtomStateGetSetting_f(G, obj, cs, a, ai,
cSetting_label_multiline_spacing, &at_label_spacing);
AtomStateGetSetting_f(G, obj, cs, a, ai,
cSetting_label_multiline_justification, &at_label_justification);
at_label_justification = CLAMP_VALUE(at_label_justification, -1.f, 1.f);
AtomStateGetSetting(
G, obj, cs, a, ai, cSetting_label_padding, &at_label_padding);
AtomStateGetSetting_f(G, obj, cs, a, ai, cSetting_label_bg_transparency,
&at_label_bkgrd_transp);
AtomStateGetSetting_color(
G, obj, cs, a, ai, cSetting_label_bg_color, &at_con_color);
label_bg =
(at_con_color != -1) &&
(at_label_bkgrd_transp < 1.f); // if the color is not default and
// transparency is < 1., then draw bg
drawConnector =
(label_connector > 0 || label_bg || label_bg_outline > 0) ? 1 : 0;
if (at_label_z_target < 0) {
// defaults to z if draw connector
if (drawConnector) {
at_label_z_target = 1;
} else {
at_label_z_target = 0;
}
} else {
at_label_z_target = at_label_z_target ? 1 : 0;
}
isProjected = (at_label_relative_mode < 1) ? 1 : 0;
isScreenCoord = (at_label_relative_mode == 1) ? 1 : 0;
isPixelCoord = (isProjected + isScreenCoord) ? 0 : 1;
I->labelV[n].relativeMode_f =
static_cast<float>(drawConnector + isScreenCoord * 2 +
isPixelCoord * 4 + at_label_z_target * 8);
I->labelV[n].spacing = at_label_spacing;
I->labelV[n].justification = at_label_justification;
std::copy_n(at_label_padding, 3, I->labelV[n].padding);
label_connector_mode_1 = label_connector_mode == 1;
label_connector_mode_2 = label_connector_mode == 2;
label_connector_mode_3 = label_connector_mode == 3;
label_connector_mode_4 = label_connector_mode == 4;
I->labelV[n].draw_var_f = static_cast<float>(
label_connector + 2 * label_bg + 4 * label_bg_outline +
8 * label_connector_mode_1 + 16 * label_connector_mode_2 +
32 * label_connector_mode_3 + 64 * label_connector_mode_4 +
128 * ray_label_connector_flat);
I->labelV[n].bg_alpha = 1.0f - at_label_bkgrd_transp;
/* behave just like the label color */
if (!((at_con_color >= 0) || (at_con_color == cColorFront) ||
(at_con_color == cColorBack)))
at_con_color = ai->color;
con_color = ColorGet(G, at_con_color);
std::copy_n(con_color, 3, I->labelV[n].bg_color);
AtomStateGetSetting_f(G, obj, cs, a, ai, cSetting_label_connector_width,
&label_connector_width);
I->labelV[n].connector_width = DIP2PIXEL(label_connector_width);
AtomStateGetSetting_f(G, obj, cs, a, ai,
cSetting_label_connector_ext_length, &label_connector_ext_length);
I->labelV[n].connector_ext_len = label_connector_ext_length;
}
if (rp) {
rp->index = a1;
rp->bond =
ai->masked ? cPickableNoPick : cPickableLabel; /* label indicator */
rp++;
}
I->L[n] = ai->label;
n++;
}
}
if (I->N) {
I->labelV.resize(n);
I->L.resize(n);
if (rp) {
I->P = ReallocForSure(I->P, Pickable, (rp - I->P));
I->P[0].index = I->N; /* unnec? */
}
} else {
I->labelV.resize(1);
I->L.resize(1);
if (rp) {
FreeP(I->P);
}
}
return (Rep*) I;
}
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