Level of Detail (LOD) in OpenSceneGraph
This whitepaper discusses the methods for Level of Detail available in OpenSceneGraph and how each works and should be used.
Topics include DISTANCE_FROM_EYE_POINT and PIXEL_SIZE_ON_SCREEN mode, screen space bounding spheres, creating lower LODs, sparse LODs and why you can’t have them, PageLOD and the DatabasePager, ProxyNode, Imposters and OcclusionQueryNode.
OpenScenGraph’s Virtual Planet Builder/OSGDEM
This whitepaper explains OpenSceneGraph’s VirtualPlanertBuilder (and OSGDEM), its advantages, the build process, the theory and structure of a VPB-built database, and how OpenSceneGraph’s DatabasePager manages the loading and unloading of this database. Also mentioned are optimization, data sources and input/output formats and how to place objects on the terrain.