Space Object Geometry and Behavior Modeling Method

The technology of 3d modeling includes geometry and behavior modeling method,it is the base of virtual environment construction.Geometry modeling is mature,but the behavior modeling develops slowly.For the simulation of satellite in virtual space environment,a new geometry and behavior 3D modeling language(GBML) based on object hierarchical structure is given in this paper.For simulating space object's geometry and behavior,the language defines the basic primitive and uses a tree structure to represent,manage and render the space object's geometry and behavior parameter.At the end,using the OpenGL,the model manage component(ModelReaderCom) based on GBML is realized.The test shows that the method is useful and practical and can be wildly used in various virtual environments.