Hi James,
Have a look at the osgdistorition example, it renders the scene into a
FBO then renders this as a orthographics projection. The FBO
CameraNode inherits the view and projection matrices from its parent
so happily behaves like a normal camera, save for the distortion.
Robert.
On 7/27/06, James Howard <[EMAIL PROTECTED]> wrote:
I've been trying to set up my program to use HDR. This is done by first
pre-rendering to a texture using a FBO and then orthagraphically projecting
the quad to the screen. My hierachy looks a bit like this:
osgProducer::Viewer
|
V
osg::Group -> osg::CameraNode (ortho projection) -> osg::Geode (quad)
|
V
osg::CameraNode (pre render)
|
V
osg::Group (scene)
(I hope my diagram shows up clearly, tried to use fixed width font!)
The system works and displays the scene as I expected. The only problem is
that the camera cannot be moved. When dragging with the mouse, the light
source seems to rotate around the scene, instead of the camera itself.
Is there any way to tie the viewer to the required camera node?
I can see that I could create a callback class for the viewer which modifies
the camera node matrix, but is there a better solution?
Thanks,
James
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