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fix bottleneck in creation of sketcher grid

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This commit is contained in:
wmayer 2016-11-27 14:36:08 +01:00
parent 4130f845e2
commit fde9bded28
1 changed files with 30 additions and 12 deletions
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42
src/Mod/Part/Gui/ViewProvider2DObject.cpp
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@ -169,24 +169,42 @@ SoSeparator* ViewProvider2DObject::createGrid(void)
vts = new SoVertexProperty;
grid->vertexProperty = vts;
int vi=0, l=0;
// vertical lines
int vlines = static_cast<int>((MaX - MiX) / Step + 0.5f);
// horizontal lines
int hlines = static_cast<int>((MaY - MiY) / Step + 0.5f);
int lines = vlines + hlines;
// set the grid indices
grid->numVertices.setNum(lines);
int32_t* vertices = grid->numVertices.startEditing();
for (int i=0; i<lines; i++)
vertices[i] = 2;
grid->numVertices.finishEditing();
// set the grid coordinates
vts->vertex.setNum(2*lines);
SbVec3f* coords = vts->vertex.startEditing();
// vertical lines
float i;
for (i=MiX; i<MaX; i+=Step) {
/*float h=-0.5*dx + float(i) / gridsize * dx;*/
vts->vertex.set1Value(vi++, i, MiY, zGrid);
vts->vertex.set1Value(vi++, i, MaY, zGrid);
grid->numVertices.set1Value(l++, 2);
float vx = MiX;
for (int i=0; i<vlines; i++) {
coords[2*i].setValue(vx, MiY, zGrid);
coords[2*i+1].setValue(vx, MaY, zGrid);
vx += Step;
}
// horizontal lines
for (i=MiY; i<MaY; i+=Step) {
//float v=-0.5*dy + float(i) / gridsize * dy;
vts->vertex.set1Value(vi++, MiX, i, zGrid);
vts->vertex.set1Value(vi++, MaX, i, zGrid);
grid->numVertices.set1Value(l++, 2);
float vy = MiY;
for (int i=vlines; i<lines; i++) {
coords[2*i].setValue(MiX, vy, zGrid);
coords[2*i+1].setValue(MaX, vy, zGrid);
vy += Step;
}
vts->vertex.finishEditing();
parent->addChild(vts);
parent->addChild(grid);