Hi Amos, OverlayNode is used for overlay scenes ontop of others. It does this be render the overlay subgraph to a texture and then multi-texturing this on to the terrain below.
If already have a texture then you don't need OverlayNode, just use your own TexGenNode to set up the texture coords and just decorate the scene with your texture and enable the texgen planes set up by the TexGenNode. Robert. On 8/9/06, Amos Smith <[EMAIL PROTECTED]> wrote:
I'm curious if OverlayNode can be used to project offscreen rendering results onto geometry? For example, if in osgsimulation example the cessna itself were rendered offscreen (did not appear in scene), while maintaining the 'shadow' projection onto the globe. I'm also curious if OverlayNode is the correct mechanism to consider for projection of an image file onto terrain at specific coordinates? It seems that a subset of OverlayNode would provide the projection of a texture onto geometry, but I'm not sure what extent of the OverlayNode could be 'bypassed' in the case where I'm starting with texture rather than rendering a model into texture first. Suggestions & references to relevant examples would be most appreciated. Thanks in advance, Amos _______________________________________________ osg-users mailing list [email protected] http://openscenegraph.net/mailman/listinfo/osg-users http://www.openscenegraph.org/
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