void
SoXipMenuBase::GLRender( SoGLRenderAction* action )
{
if( on.getValue() == FALSE )
return ;
// Compute the 3D position of the menu, given the mouse 2D position
saveViewInformation( action );
mMenuOffset->translation.setValue( mPlaneProj->project( position.getValue() ) );
SoGetBoundingBoxAction bba( action->getViewportRegion() );
bba.apply( mMenuSeparator );
SbBox3f bbox = bba.getBoundingBox();
bbox.transform( mModelMatrix );
float viewportAR = mViewport.getViewportAspectRatio();
SbVec3f screenOffset(0, 0, 0);
if( viewportAR < 1. )
{
screenOffset[0] = bbox.getMax()[0] - 1.;
screenOffset[1] = bbox.getMax()[1] - 1. / viewportAR;
}
else
{
screenOffset[0] = bbox.getMax()[0] - viewportAR;
screenOffset[1] = bbox.getMax()[1] - 1;
}
if( screenOffset[0] < 0 )
screenOffset[0] = 0;
if( screenOffset[1] < 0 )
screenOffset[1] = 0;
SbVec3f worldOffset;
mModelMatrix.inverse().multVecMatrix( screenOffset, worldOffset );
mMenuOffset->translation.setValue( mMenuOffset->translation.getValue() - worldOffset );
glPushAttrib( GL_ENABLE_BIT );
glDisable( GL_DEPTH_TEST );
SoXipKit::GLRender( action );
glPopAttrib();
}
const SbOctTree * getOctTree(void) {
if (this->octtree == NULL) {
const SbOctTreeFuncs funcs = {
NULL /* ptinsidefunc */,
PrimitiveData::insideboxfunc,
NULL /* insidespherefunc */,
NULL /* insideplanesfunc */
};
SbBox3f b = this->getBoundingBox();
// Add a 1% slack to the bounding box, to avoid problems in
// SbOctTree due to floating point inaccuracies (see assert() in
// SbOctTree::addItem()).
//
// This may be just a temporary hack -- see the FIXME at the
// same place as mentioned above.
SbMatrix m;
m.setTransform(SbVec3f(0, 0, 0), // translation
SbRotation::identity(), // rotation
SbVec3f(1.01f, 1.01f, 1.01f), // scalefactor
SbRotation::identity(), // scaleorientation
SbVec3f(b.getCenter())); // center
b.transform(m);
this->octtree = new SbOctTree(b, funcs);
if (ida_debug()) {
SoDebugError::postInfo("PrimitiveData::getOctTree",
"made new octtree for PrimitiveData %p", this);
}
for (unsigned int k = 0; k < this->numTriangles(); k++) {
SbTri3f * t = this->getTriangle(k);
this->octtree->addItem(t);
}
}
return this->octtree;
}
// Execute full set of intersection detection operations on all the
// primitives that has been souped up from the scene graph.
void
SoIntersectionDetectionAction::PImpl::doIntersectionTesting(void)
{
if (this->callbacks.empty()) {
SoDebugError::postWarning("SoIntersectionDetectionAction::PImpl::doIntersectionTesting",
"intersection testing invoked, but no callbacks set up");
return;
}
delete this->traverser;
this->traverser = NULL;
if (ida_debug()) {
SoDebugError::postInfo("SoIntersectionDetectionAction::PImpl::doIntersectionTesting",
"total number of shapedata items == %d",
this->shapedata.getLength());
}
const SbOctTreeFuncs funcs = {
NULL /* ptinsidefunc */,
shapeinsideboxfunc,
NULL /* insidespherefunc */,
NULL /* insideplanesfunc */
};
SbBox3f b = this->fullxfbbox.project();
// Add a 1% slack to the bounding box, to avoid problems in
// SbOctTree due to floating point inaccuracies (see assert() in
// SbOctTree::addItem()).
//
// This may be just a temporary hack -- see the FIXME at the
// same place.
SbMatrix m;
m.setTransform(SbVec3f(0, 0, 0), // translation
SbRotation::identity(), // rotation
SbVec3f(1.01f, 1.01f, 1.01f), // scalefactor
SbRotation::identity(), // scaleorientation
SbVec3f(b.getCenter())); // center
b.transform(m);
SbOctTree shapetree(b, funcs);
for (int k = 0; k < this->shapedata.getLength(); k++) {
ShapeData * shape = this->shapedata[k];
if (shape->xfbbox.isEmpty()) { continue; }
shapetree.addItem(shape);
}
if (ida_debug()) { shapetree.debugTree(stderr); }
// For debugging.
unsigned int nrshapeshapeisects = 0;
unsigned int nrselfisects = 0;
const float theepsilon = this->getEpsilon();
for (int i = 0; i < this->shapedata.getLength(); i++) {
ShapeData * shape1 = this->shapedata[i];
// If the shape has no geometry, immediately skip to next
// iteration of for-loop.
if (shape1->xfbbox.isEmpty()) { continue; }
// Remove shapes from octtree as we iterate over the full set, to
// avoid self-intersection and to avoid checks against other
// shapes happening both ways.
shapetree.removeItem(shape1);
// FIXME: shouldn't we also invoke the filter-callback here? 20030403 mortene.
if (this->internalsenabled) {
nrselfisects++;
SbBool cont;
this->doInternalPrimitiveIntersectionTesting(shape1->getPrimitives(), cont);
if (!cont) { goto done; }
}
SbBox3f shapebbox = shape1->xfbbox.project();
if (theepsilon > 0.0f) {
const SbVec3f e(theepsilon, theepsilon, theepsilon);
// Extend bbox in all 6 directions with the epsilon value.
shapebbox.getMin() -= e;
shapebbox.getMax() += e;
}
SbList<void*> candidateshapes;
shapetree.findItems(shapebbox, candidateshapes);
if (ida_debug()) {
SoDebugError::postInfo("SoIntersectionDetectionAction::PImpl::doIntersectionTesting",
"shape %d intersects %d other shapes",
i, candidateshapes.getLength());
// debug, dump to .iv-file the "master" shape bbox given by i,
// plus ditto for all intersected shapes
#if 0
if (i == 4) {
SoSeparator * root = new SoSeparator;
root->ref();
root->addChild(make_scene_graph(shape1->xfbbox, "mastershape"));
for (int j = 0; j < candidateshapes.getLength(); j++) {
ShapeData * s = (ShapeData * )candidateshapes[j];
SbString str;
str.sprintf("%d", j);
root->addChild(make_scene_graph(s->xfbbox, str.getString()));
}
SoOutput out;
SbBool ok = out.openFile("/tmp/shapechk.iv");
assert(ok);
SoWriteAction wa(&out);
wa.apply(root);
root->unref();
}
#endif // debug
}
SbXfBox3f xfboxchk;
if (theepsilon > 0.0f) { xfboxchk = expand_SbXfBox3f(shape1->xfbbox, theepsilon); }
else { xfboxchk = shape1->xfbbox; }
for (int j = 0; j < candidateshapes.getLength(); j++) {
ShapeData * shape2 = static_cast<ShapeData *>(candidateshapes[j]);
if (!xfboxchk.intersect(shape2->xfbbox)) {
if (ida_debug()) {
SoDebugError::postInfo("SoIntersectionDetectionAction::PImpl::doIntersectionTesting",
"shape %d intersecting %d is a miss when tried with SbXfBox3f::intersect(SbXfBox3f)",
i, j);
}
continue;
}
if (!this->filtercb ||
this->filtercb(this->filterclosure, shape1->path, shape2->path)) {
nrshapeshapeisects++;
SbBool cont;
this->doPrimitiveIntersectionTesting(shape1->getPrimitives(), shape2->getPrimitives(), cont);
if (!cont) { goto done; }
}
}
}
done:
if (ida_debug()) {
SoDebugError::postInfo("SoIntersectionDetectionAction::PImpl::doIntersectionTesting",
"shape-shape intersections: %d, shape self-intersections: %d",
nrshapeshapeisects, nrselfisects);
}
}
