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Added osgUtil::IntersectorGroup to handle groups of osgUtil::Intersectors

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This commit is contained in:
Robert Osfield
2006-10-27 15:11:17 +00:00
parent 0fe424996d
commit 358b96e953
3 changed files with 289 additions and 50 deletions
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132
examples/osgintersection/osgintersection.cpp
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@@ -39,45 +39,115 @@ int main(int argc, char **argv)
std::cout<<"Intersection "<<std::endl;
osg::Timer_t startTick = osg::Timer::instance()->tick();
osg::BoundingSphere bs = root->getBound();
#if 1
osg::Vec3d start = bs.center() + osg::Vec3d(0.0,bs.radius(),0.0);
osg::Vec3d end = bs.center() - osg::Vec3d(0.0, bs.radius(),0.0);
#else
osg::Vec3d start = bs.center() + osg::Vec3d(0.0,0.0, bs.radius());
osg::Vec3d end = bs.center() - osg::Vec3d(0.0, 0.0, bs.radius());
#endif
osg::ref_ptr<osgUtil::LineSegmentIntersector> intersector = new osgUtil::LineSegmentIntersector(start, end);
osgUtil::IntersectionVisitor intersectVisitor( intersector.get(), new MyReadCallback );
root->accept(intersectVisitor);
osg::Timer_t endTick = osg::Timer::instance()->tick();
std::cout<<"Completed in "<<osg::Timer::instance()->delta_s(startTick,endTick)<<std::endl;
if ( intersector->containsIntersections() )
bool useIntersectorGroup = true;
if (useIntersectorGroup)
{
osgUtil::LineSegmentIntersector::Intersections& intersections = intersector->getIntersections();
for(osgUtil::LineSegmentIntersector::Intersections::iterator itr = intersections.begin();
itr != intersections.end();
++itr)
osg::Timer_t startTick = osg::Timer::instance()->tick();
osg::Vec3d start = bs.center() + osg::Vec3d(0.0,bs.radius(),0.0);
osg::Vec3d end = bs.center();// - osg::Vec3d(0.0, bs.radius(),0.0);
osg::Vec3d deltaRow( 0.0, 0.0, bs.radius()*0.01);
osg::Vec3d deltaColumn( bs.radius()*0.01, 0.0, 0.0);
unsigned int numRows = 20;
unsigned int numColumns = 20;
osg::ref_ptr<osgUtil::IntersectorGroup> intersectorGroup = new osgUtil::IntersectorGroup();
for(unsigned int r=0; r<numRows; ++r)
{
const osgUtil::LineSegmentIntersector::Intersection& intersection = *itr;
std::cout<<" ratio "<<intersection.ratio<<std::endl;
std::cout<<" point "<<intersection.localIntersectionPoint<<std::endl;
std::cout<<" normal "<<intersection.localIntersectionNormal<<std::endl;
std::cout<<" indices "<<intersection.indexList.size()<<std::endl;
std::cout<<" primitiveIndex "<<intersection.primitiveIndex<<std::endl;
std::cout<<std::endl;
for(unsigned int c=0; c<numColumns; ++c)
{
osg::Vec3d s = start + deltaColumn * double(c) + deltaRow * double(r);
osg::Vec3d e = end + deltaColumn * double(c) + deltaRow * double(r);
osg::ref_ptr<osgUtil::LineSegmentIntersector> intersector = new osgUtil::LineSegmentIntersector(s, e);
intersectorGroup->addIntersector( intersector.get() );
}
}
osgUtil::IntersectionVisitor intersectVisitor( intersectorGroup.get(), new MyReadCallback );
root->accept(intersectVisitor);
osg::Timer_t endTick = osg::Timer::instance()->tick();
std::cout<<"Completed in "<<osg::Timer::instance()->delta_s(startTick,endTick)<<std::endl;
if ( intersectorGroup->containsIntersections() )
{
std::cout<<"Found intersections "<<std::endl;
osgUtil::IntersectorGroup::Intersectors& intersectors = intersectorGroup->getIntersectors();
for(osgUtil::IntersectorGroup::Intersectors::iterator intersector_itr = intersectors.begin();
intersector_itr != intersectors.end();
++intersector_itr)
{
osgUtil::LineSegmentIntersector* lsi = dynamic_cast<osgUtil::LineSegmentIntersector*>(intersector_itr->get());
if (lsi)
{
osgUtil::LineSegmentIntersector::Intersections& intersections = lsi->getIntersections();
for(osgUtil::LineSegmentIntersector::Intersections::iterator itr = intersections.begin();
itr != intersections.end();
++itr)
{
const osgUtil::LineSegmentIntersector::Intersection& intersection = *itr;
std::cout<<" ratio "<<intersection.ratio<<std::endl;
std::cout<<" point "<<intersection.localIntersectionPoint<<std::endl;
std::cout<<" normal "<<intersection.localIntersectionNormal<<std::endl;
std::cout<<" indices "<<intersection.indexList.size()<<std::endl;
std::cout<<" primitiveIndex "<<intersection.primitiveIndex<<std::endl;
std::cout<<std::endl;
}
}
}
}
}
else
{
osg::Timer_t startTick = osg::Timer::instance()->tick();
#if 1
osg::Vec3d start = bs.center() + osg::Vec3d(0.0,bs.radius(),0.0);
osg::Vec3d end = bs.center() - osg::Vec3d(0.0, bs.radius(),0.0);
#else
osg::Vec3d start = bs.center() + osg::Vec3d(0.0,0.0, bs.radius());
osg::Vec3d end = bs.center() - osg::Vec3d(0.0, 0.0, bs.radius());
#endif
osg::ref_ptr<osgUtil::LineSegmentIntersector> intersector = new osgUtil::LineSegmentIntersector(start, end);
osgUtil::IntersectionVisitor intersectVisitor( intersector.get(), new MyReadCallback );
root->accept(intersectVisitor);
osg::Timer_t endTick = osg::Timer::instance()->tick();
std::cout<<"Completed in "<<osg::Timer::instance()->delta_s(startTick,endTick)<<std::endl;
if ( intersector->containsIntersections() )
{
osgUtil::LineSegmentIntersector::Intersections& intersections = intersector->getIntersections();
for(osgUtil::LineSegmentIntersector::Intersections::iterator itr = intersections.begin();
itr != intersections.end();
++itr)
{
const osgUtil::LineSegmentIntersector::Intersection& intersection = *itr;
std::cout<<" ratio "<<intersection.ratio<<std::endl;
std::cout<<" point "<<intersection.localIntersectionPoint<<std::endl;
std::cout<<" normal "<<intersection.localIntersectionNormal<<std::endl;
std::cout<<" indices "<<intersection.indexList.size()<<std::endl;
std::cout<<" primitiveIndex "<<intersection.primitiveIndex<<std::endl;
std::cout<<std::endl;
}
}
}
return 0;
}