// If a viewport isn't set on the camera, then it's hard to dig it
// out of the SceneView objects in the viewer, and the coordinates
// of mouse events are somewhat bizzare.
camera->setViewport(new osg::Viewport(0, 0, realw, realh));
camera->setProjectionResizePolicy(osg::Camera::FIXED);
// If a viewport isn't set on the camera, then it's hard to dig it
// out of the SceneView objects in the viewer, and the coordinates
// of mouse events are somewhat bizzare.
camera->setViewport(new osg::Viewport(0, 0, realw, realh));
camera->setProjectionResizePolicy(osg::Camera::FIXED);