| With the rapid development of software and hardware in computer-science field, the application of computer graphics used in all of industries and trade is rapidly popularized. Nowadays, computer graphics has researched in three dimensions. The visualization of science calculation, computer cartoon, and virtual reality has become three focuses about computer graphics.But the technology kernel of the three above is three dimension graphics. Now, the program of three dimension graphics generally is written by OpenGL or DirectX. And the most use is OpenGL(Open Graphics Language), which belongs to SGI company, it has become an industry standard about software development interface of computer three dimension graphics, and it is widely used in game development, building, product design, medicine, earth science and so on.Model construction of virtual reality used OpenGL technology has broad applied prospect, especially in the field of not being available with the CAD method and reinvent of the original appearance. It also can be applied in the virtual reality field and compress, scan and search of the video building show, flying imitation, interact game, health insurance imitation, virtual shopping, virtual museum, art gallery.This paper targeted in three dimensions, solve the following problems with OpenGL technology.1.conduct the research and practice to the three dimensional model technology in graphics and use OpenGL to set up three dimension in the virtual environment.2.conduct the research and practice to the light settlement technology in graphics. The color of all sorts of material can be gained through the apply of light function, and gain the light effect similar to nature.3.the differences of the final result are out of the fact the material is irradiated by imitated natural light source in the virtual condition.4.In different conditions of light models, the effects of the factual and the real with different models in virtual condition are different. |
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