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From Peter Hrenka, "Due to popular demand I would like to submit this

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enhanced version of PolytopeIntersector.


New features of PolytopeIntersector :

* Dimension mask: The user may specify the dimensions of the
   primitives to be tested. Checking polytope-triangle and
   polytope-quad intersections is rather slow so this can
   be turned off.
* Reference plane: The resulting intersections are sorted
   by the distance to this plane.

New memebers of PolytopeIntersector::Intersection :

* distance: Distance of localIntersectionPoint to the reference plane
* maxDistance: Maximum distance of all intersectionPoints to the
   reference plane.
* intersectionPoints: The points intersecting the planes of the polytope
   or points completely inside the polytope.
* localIntersectionPoint: arithmetic mean of all intersection points
* primitiveIndex: Index of the primitive that intersected


I added some more output to the example osgkeyboardmouse."
This commit is contained in:
Robert Osfield
2007-12-08 16:37:05 +00:00
parent 195ed8ba26
commit 65bef96a6e
3 changed files with 477 additions and 282 deletions
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24
examples/osgkeyboardmouse/osgkeyboardmouse.cpp
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@@ -234,20 +234,22 @@ public:
if (picker->containsIntersections())
{
osgUtil::PolytopeIntersector::Intersections& intersections = picker->getIntersections();
osgUtil::PolytopeIntersector::Intersection intersection = picker->getFirstIntersection();
for (osgUtil::PolytopeIntersector::Intersections::iterator it=intersections.begin();
it!=intersections.end(); ++it) {
osgUtil::PolytopeIntersector::Intersection intersection=*it;
osg::notify(osg::NOTICE)<<"Picked "<<intersection.localIntersectionPoint<<std::endl
<<" Distance to ref. plane "<<intersection.distance
<<", max. dist "<<intersection.maxDistance
<<", primitive index "<<intersection.primitiveIndex
<<", numIntersectionPoints "
<<intersection.numIntersectionPoints
<<std::endl;
osg::NodePath& nodePath = intersection.nodePath;
node = (nodePath.size()>=1)?nodePath[nodePath.size()-1]:0;
parent = (nodePath.size()>=2)?dynamic_cast<osg::Group*>(nodePath[nodePath.size()-2]):0;
if (node) std::cout<<" Hits "<<node->className()<<" nodePath size"<<nodePath.size()<<std::endl;
toggleScribe(parent, node);
}
osg::NodePath& nodePath = intersection.nodePath;
node = (nodePath.size()>=1)?nodePath[nodePath.size()-1]:0;
parent = (nodePath.size()>=2)?dynamic_cast<osg::Group*>(nodePath[nodePath.size()-2]):0;
if (node) std::cout<<" Hits "<<node->className()<<" nodePath size "<<nodePath.size()<<std::endl;
toggleScribe(parent, node);
}
}