void
SoBoxHighlightRenderAction::drawBoxes(SoPath * pathtothis, const SoPathList * pathlist)
{
int i;
int thispos = reclassify_cast<SoFullPath *>(pathtothis)->getLength()-1;
assert(thispos >= 0);
PRIVATE(this)->postprocpath->setHead(pathtothis->getHead()); // reset
for (i = 1; i < thispos; i++) {
PRIVATE(this)->postprocpath->append(pathtothis->getIndex(i));
}
// we need to disable accumulation buffer antialiasing while
// rendering selected objects
int oldnumpasses = this->getNumPasses();
this->setNumPasses(1);
SoState * thestate = this->getState();
thestate->push();
for (i = 0; i < pathlist->getLength(); i++) {
SoFullPath * path = reclassify_cast<SoFullPath *>((*pathlist)[i]);
PRIVATE(this)->postprocpath->append(path->getHead());
for (int j = 1; j < path->getLength(); j++) {
PRIVATE(this)->postprocpath->append(path->getIndex(j));
}
// Previously SoGLRenderAction was used to draw the bounding boxes
// of shapes in selection paths, by overriding renderstyle state
// elements to lines drawstyle and simply doing:
//
// SoGLRenderAction::apply(PRIVATE(this)->postprocpath); // Bug
//
// This could have the unwanted side effect of rendering
// non-selected shapes, as they could be part of the path (due to
// being placed below SoGroup nodes (instead of SoSeparator
// nodes)) up to the selected shape.
//
//
// A better approach turned out to be to soup up and draw only the
// bounding boxes of the selected shapes:
PRIVATE(this)->drawHighlightBox(PRIVATE(this)->postprocpath);
// Remove temporary path from path buffer
PRIVATE(this)->postprocpath->truncate(thispos);
}
this->setNumPasses(oldnumpasses);
thestate->pop();
}
void
SoLineHighlightRenderActionP::drawBoxes(SoPath * pathtothis,
const SoPathList * pathlist)
{
int i;
int thispos = reclassify_cast<SoFullPath *>(pathtothis)->getLength()-1;
assert(thispos >= 0);
this->postprocpath->setHead(pathtothis->getHead()); // reset
for (i = 1; i < thispos; i++) {
this->postprocpath->append(pathtothis->getIndex(i));
}
SoState * state = PUBLIC(this)->getState();
state->push();
// we need to disable accumulation buffer antialiasing while
// rendering selected objects
int oldnumpasses = PUBLIC(this)->getNumPasses();
PUBLIC(this)->setNumPasses(1);
SoLazyElement::setLightModel(state, SoLazyElement::BASE_COLOR);
SoColorPacker ** cptr = static_cast<SoColorPacker **>(this->colorpacker_storage.get());
SoLazyElement::setDiffuse(state, pathtothis->getHead(), 1, &this->color, *cptr);
// FIXME: we should check this versus the actual max line width
// supported by the underlying OpenGL context. 20050610 mortene.
SoLineWidthElement::set(state, this->linewidth);
SoLinePatternElement::set(state, this->linepattern);
SoTextureQualityElement::set(state, 0.0f);
SoDrawStyleElement::set(state, SoDrawStyleElement::LINES);
SoPolygonOffsetElement::set(state, NULL, -1.0f, -1.0f, SoPolygonOffsetElement::LINES, TRUE);
SoMaterialBindingElement::set(state, NULL, SoMaterialBindingElement::OVERALL);
SoNormalElement::set(state, NULL, 0, NULL, FALSE);
SoOverrideElement::setNormalVectorOverride(state, NULL, TRUE);
SoOverrideElement::setMaterialBindingOverride(state, NULL, TRUE);
SoOverrideElement::setLightModelOverride(state, NULL, TRUE);
SoOverrideElement::setDiffuseColorOverride(state, NULL, TRUE);
SoOverrideElement::setLineWidthOverride(state, NULL, TRUE);
SoOverrideElement::setLinePatternOverride(state, NULL, TRUE);
SoOverrideElement::setDrawStyleOverride(state, NULL, TRUE);
SoOverrideElement::setPolygonOffsetOverride(state, NULL, TRUE);
SoTextureOverrideElement::setQualityOverride(state, TRUE);
for (i = 0; i < pathlist->getLength(); i++) {
SoFullPath * path = reclassify_cast<SoFullPath *>((*pathlist)[i]);
this->postprocpath->append(path->getHead());
for (int j = 1; j < path->getLength(); j++) {
this->postprocpath->append(path->getIndex(j));
}
PUBLIC(this)->SoGLRenderAction::apply(this->postprocpath);
this->postprocpath->truncate(thispos);
}
PUBLIC(this)->setNumPasses(oldnumpasses);
state->pop();
}