Hi, Has anyone been able to successfully use osgViewer::View::computeIntersections() taking a node path argument on a non-trivial scenegraph?
I currently have a fairly complex scenegraph, but I only want a small part of it to collide with computeIntersections. When I use computeIntersections without the nodepath, everything works perfectly. But as soon as I use the overload with the node path, I get an empty intersection set. I'm pretty sure the node path I'm giving is correct. Looking at the implementation of computeIntersections() with the node path, the only thing that puzzles me is the use of osg::computeWorldToLocal(nodePath) before computing the matrix inverse, I'm not sure I fully understand why this is the case. It seems to me the whole operation should be LocalToWorldMatrix * ViewMatrix * ProjectionMatrix instead. In any case, if anyone has a working example (which would show computeIntersections() with a node path is working correctly, or help finding the mistake I'm doing), it would be appreciated. Regards, Tanguy _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
