Hi Eric. I experienced the same problem as well. The PickVisitor uses the clip plane of the projection matrix to determine the length of the line to perform the intersection with. With orthographic projection matrices, the length of this line is computed to a small value. This is not a problem when adding flat objects to the HUD, like text and quads. However, with 3D objects this causes a problem because most of the polygons end up outside the line range. I solved this by applying a very small scale factor along the Z-axis of the object. This basically squishes it so that it is flat. I wanted to modify PickVisitor so it can handle this case, but I couldn't figure out a clean way to accomplish it.
-Farshid _______________________________________________ osg-users mailing list osg-users@openscenegraph.net http://openscenegraph.net/mailman/listinfo/osg-users http://www.openscenegraph.org/
