[osg-users] picking/selecting invisible objects

Paul Martz pmartz at skew-matrix.com
Sat Oct 13 09:25:13 PDT 2007

How are you making it invisible? If you're just using alpha blending with 0
alpha, the normal osgUtil intersection classes should still be able to pick


From: osg-users-bounces at lists.openscenegraph.org
[mailto:osg-users-bounces at lists.openscenegraph.org] On Behalf Of alessandro
Sent: Saturday, October 13, 2007 1:39 AM
To: osg-users
Subject: [osg-users] picking/selecting invisible objects

I'd like to ask some hint on how to be able to pick/select invisible 3D
In my scene, I need to have a totally transparent object and, when the mouse
moves on it, it should reveal its presence, for example displaying a halo or
something like this. 
How can I pick such an invisible object?
Thank you. Best regards.

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