Hi, I'm getting unexpected behavior from PolytopeIntersector and was wondering if it might have something to do with the PagedLODs in my scene graph.
I want to find all polygons in a rectilinear volume in my model, in model coordinates (not related to any view on the screen) based on two corner vertices. The weird thing is that if I use the two corner points as the ends of a LineSegmentIntersector, I find intersections, but a PolytopeIntersector with Polytope made from a BoundingBox with those same corner points, over the same graph, finds no intersections. Shouldn't the PolytopeIntersector at least find the geometry that the LineSegmentIntersector does? I thought I might have the direction of the planes backwards for the Polytope, so I tried flip() but either way I get no intersections. I've read through the code and it looks like there might be issues related to the PagedLODs in my scene graph. Any idea if PolytopeIntersector and PagedLOD play together well or not? I've looked for examples and read code for PolytopeIntersector, but there doesn't seem to be much out there, and most of it uses View-based intersection, not model-based. Thank you! Cheers, Chris ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=58575#58575 _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
