| Along with the development of technology of computers, the interactive computer graphics has obtained a dcvclopmcnt"with full speed. It has been applied to many fields extensively and played already an important role. Now the interactive computer graphics use the three-dimensional technology, there are a lot of three-dimensional graphics in our lives. About the interactive computer graphics, three hotspot-gambits are existed that arc Virtual Reality, scientific visible and computer cartoon. The three-dimensional graphics technology is the important technology of the three hotspot-gambits.The important technology is modeling in Virtual Reality technology. Now, model technology is the best hotspot aspect of the computer graphics, and it has been applied to many fields extensively, such as architecture, strategic, amusement, etc. Virtual Reality system based on virtual object modeling technology. The virtual object modeling technology includes three-dimensional seeing modeling and three-dimensional hearing modeling, now, the application of the Virtual Reality based on the three-dimensional seeing modeling technology, three-dimensional seeing modeling can be differentiated into some aspects, such as Geometric Modeling, Kincmatical Modeling, Physical modeling, Object Behavior modeling, Model Segmentation, etc, the , Geometric Modeling is the key of the virtual scene model, and its' application is the best abroad.This text, based on the fundamental of the computer graphics, according as modeling technology in Virtual Reality, introduces some theories of the three-dimensional graphics and the way of turning it into real graphics. It expatiates the key technology of the virtual environment modeling, and emphasizes particularly on Geometric Modeling. Then a close study is made on the modeling method of the three-dimensional graphics OpcnGL, MultiGcn Creator and 3DS MAX. Finally, the model of the printer that is the equipment of the computer has been made by 3DS MAX tool.
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