Dear OSG community, I am trying to set auto scale property of osg::AutoTransform variable. I would like to achieve such an effect that whatever the viewing camera position and its distance from a certain geometry, the geometry's size would not change.
As an example geometry, I have this pyramid: [image: Inline image 1] I found an example "osgautotransform" http://trac.openscenegraph.org/projects/osg//browser/OpenSceneGraph/trunk/examples/osgautotransform/osgautotransform.cpp that seem to have an element of what I need. I tried to use the same commands, for example: *osg*::AutoTransform* at = *new* osg::AutoTransform; at->addChild(geode); // geode constains my pyramid geometry and color at->setAutoScaleToScreen(true); at->setMinimumScale(1); // some test values at->setMaximumScale(2); // to render the scene: root->addChild(at); // root is osg::Group viewer->setSceneData(root); However, it did not produce any changes in how the scene is rendered when I change the camera view (i.e., the pyramid becomes smaller when camera zooms out and bigger when zooms in). I tried the command that sets up auto rotate mode and it works to fix the rotation. So how come I cannot control the scale? Could anyone point out what am I doing wrong or what is missing here? Thank you! Regards, Victoria
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