[osg-users] Draw geometry that keeps its size in screen even with user manipulation (scaling, etc)

Bruno Oliveira bruno.manata.oliveira at gmail.com
Mon Nov 21 07:08:17 PST 2016


I am drawing some basic shapes/geometries (in this case, some rectangles or
circles), but need them to have fixed size in screen pixel coordinates,
even when the user manipulates the scene.

For instance, I want to draw rectangles that are 10-pixel wide, and keep
these 10 pixels even when the user zooms in or zooms out the scene.

How can I do this?

( I think this can't be accomplished with osg::Transform::ABSOLUTE_RF,
since I want the shapes to translate/rotate when user manipulates the scene)
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