I would like to be able render multiple views of an Entity in my scene
from multiple viewpoints... Left side of entity, Top of entity, Front of
entity for example.... I want the camera to be the same distance from
the entity in each case.
From what I have read today, I think I need to use a Composite Viewer
to accomplish this. So I would create the composite viewer and add a
left view, front view and top view.
It seems easy enough to set this up. I have a simple test app that
does this... each view renders the scene (although not from the correct
viewpoint yet).
What I really need to do though is set up each camera (left side
camera, top side camera, front side camera) to render to texture then
render that texture to a full screen quad in each view of the composite
view.
So basically...
Left Side Camera -> Left Side Texture -> Left Side Quad in Left Side
View
Top Side Camera -> Top Side Texture -> Top Side Quad in Top Side View
Front Side Camera -> Front Side Texture -> Front Side Quad in Front
Side View
How do I create the scenegraph for this? Would all views share the
same scenegraph?
In past, when I have setup RTT in a single viewer, I have done
something like this:
osg::ref_ptr<osg::Group> root = new osg::Group;
root->addChild( rttCamera.get() );
root->addChild( hudCamera.get() );
root->addChild( scene.get() );
osgViewer::Viewer viewer;
viewer.getCamera()->setComputeNearFarMode(
osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR );
viewer.setSceneData( root.get() );
CD
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