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How to generate pictures real and esthetic objects is an important subject of computer graphics.The techniques of mapping textures onto the surfaces of an object in the 3D space are efficient ap-proaches for the purpose.We developed and implemented algorithms for generating objects with appearances stone,wood grain,ice lattice,brick,doors and windows on Apollo workstations. All thealgorithms have been incorporated into the 3D geometry modelling system(GEMS)developed by theCAD Center of Tsinghua University.This paper emphasizes the wood grain and the ice latticealgorithms.
How to generate pictures real and esthetic objects is an important subject of computer graphics. The techniques of mapping textures onto the surfaces of an object in the 3D space are efficient ap-proaches for the purpose. We developed and implemented algorithms for generating objects with appearances All of algorithms have been incorporated into the 3D geometry modeling system (GEMS) developed by the CAD Center of Tsinghua University. This paper emphasizes the wood grain and the ice lattice algorithms.