FGFS-4.1/OpenSceneGraph
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Added the fallback of intersecting with the a drawables bounding box, if the drawable

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isn't a GeoSet and hence supported by the IntersectVisitor's GeoSet primitive
intersections code.
This commit is contained in:
Robert Osfield
2002-03-20 11:22:06 +00:00
parent 8f02db61e5
commit 8c9609b331
1 changed files with 34 additions and 0 deletions
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34
src/osgUtil/IntersectVisitor.cpp
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@@ -478,6 +478,40 @@ void IntersectVisitor::apply(Geode& geode)
{
osg::GeoSet* gset = dynamic_cast<osg::GeoSet*>(geode.getDrawable(i));
if (gset) intersect(*gset);
else
{
IntersectState* cis = _intersectStateStack.back().get();
// simply default to intersecting with bounding box.
for(IntersectState::LineSegmentList::iterator sitr=cis->_segList.begin();
sitr!=cis->_segList.end();
++sitr)
{
if (sitr->second->intersect(geode.getDrawable(i)->getBound()))
{
Hit hit;
hit._nodePath = _nodePath;
hit._matrix = cis->_matrix;
hit._inverse = cis->_inverse;
hit._geoset = NULL;
if (_nodePath.empty()) hit._geode = NULL;
else hit._geode = dynamic_cast<Geode*>(_nodePath.back());
hit._ratio = 0.0f;
hit._primitiveIndex = -1;
hit._originalLineSegment = sitr->first;
hit._localLineSegment = sitr->second;
hit._intersectPoint = geode.getDrawable(i)->getBound().center();
hit._intersectNormal.set(0.0,0.0,1.0);
_segHitList[sitr->first.get()].push_back(hit);
std::sort(_segHitList[sitr->first.get()].begin(),_segHitList[sitr->first.get()].end());
}
}
}
}
leaveNode();