Hi Robert and thanks for the reply We actually want to display our scene as a map (or CAD-like view), with the ability to zoom in\out, and moving the camera laterally (no rotation or orbiting for this mode). For zooming we do not move our camera into the scene at all. Instead, we achieve a ‘zooming’-like effect by expanding or contracting the [left,right, top, bottom] boundaries of the frustum (am I still using a hammer to screw in a screw?)
I suspect it may not be a near/far clipping problem since the problem persists even if I turn off near/far clipping (by setting DO_NOT_COMPUTE_NEAR_FAR). The problem went away only after I turned off VIEW_FRUSTUM_SIDES_CULLING, which implies the ‘x’ object is getting culled by the side ‘walls’ of the orthographic frustum. I would like to get some more insight into the cull traversal, to understand why it gets culled out. Is there a place I can look at to learn how the culling works? I will be starting to debug Renderer::cull_draw(), not sure if that's the best place to look. Thanks again Ron ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=48901#48901 _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
