Hi Robert, What viewer setup (i..e osgProducer::Viewer/osgViewer::Viewer) do you have?
Robert. On 5/3/07, Robert Doyle <[EMAIL PROTECTED]> wrote:
Hello OSG users: I'm attempting to get object coordinates from Z-buffer values using the projectWindowIntoObject() method (similar to gluUnproject()) found in SceneView. This works fine if DO_NOT_COMPUTE_NEAR_FAR is set. But if the default automatic generation of near and far clipping planes is used, the calculated object coordinates are wrong. Clearly some scaling needs to be done to correct for the new z-near and z-far. I would like to get the valid projection matrix to simplify the task. But the projection matrix retrieved in a camera post-draw callback does not include the generated clipping planes. In other words, it's the same whether automatic generation z-near and z-far is enable or disabled. This is also true if I use glGetDoublev(GL_PROJECTION_MATRIX, projMatrix). So, my question is: Is it possible to retrieve the correct projection matrix or do I need to generate my own projection matrix using something similar to the clampProjectionMatrix() function in the CullVisitor. Thanks, Bob Doyle _______________________________________________ osg-users mailing list [email protected] http://openscenegraph.net/mailman/listinfo/osg-users http://www.openscenegraph.org/
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