Hi, I am using LineSegmentIntersectors with IntersectionVisitor to do some ray casting in my architecture. Everything works fine to select and move objects. However I want to implement a drag-and-drop interaction, where I can move an object onto another and have something different happen. I want to obtain this object using the ray casting as well, so I cast a ray and check to get the first object in Intersections that is not my current object (which I saved in a member variable at the beginning of my drag-and-drop).
It all works fine until I start interacting with parent/child objects. I have a sphere and a cube, the sphere is the parent of the cube. When I drag-and-drop my cube over black space, the IntersectionVisitor returns me the sphere (the parent) as the second object intersected even though there is nothing behind the cube at the place I dropped it. Now I believe this has something to do with the parent's bounding sphere including it's children and thus being counted as an intersection, but I'm not sure how I can deal with this kind of stuff. Then again, I could be mistaken. I tried reading about bounding spheres in the reference guide and did not see much, neither could I get much information (or enough information ;) about IntersectionVisitors.. any help would be strongly appreciated ! Thanks in advance ! Sincerely, Julien-Charles ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=17395#17395 _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
