| With the development of the computer visualization, the computer visualization technology application fields continue to expand, not only in scientific computing, industrial controls, telecommunications, artificial intelligence and other areas ,and used in the film and television entertainment, the simulation, the 3D graphics of manufacture respects. The visualization is a hot application of computer technology fields. While the popular field of the area is concentrated on rendering the three-dimensional images. OpenGL is graph hardware software connection, because its probability, effectiveness, usability, in fact it has become industry standards of 3D graphics construction.This paper studies natural scene visualization based on OpenGL by using Visual C++. This paper has realized three-dimensional terrain,sky simulation and constructed a natural control system. This main content of the article are summarized as follow:⑴This article introduced briefly visualization and the current developing of visualization technology at home and abroad in these recent years. This article proposed the meaning and content of this study.⑵This article researched the theory of three-dimensional vision building, light, material, texture mapping and so on in the generating process of three-dimensional graphics.⑶Introduced OpenGL programming technology and graphics rendering process using OpenGL.⑷Researched the two algorithms of drawing terrain model, using the two algorithm realized the visualization of three-dimensional terrain respectively. Finally, by comparing and analyzing the two algorithms, reached the conclusion that Diamond-Square algorithms have become a representative method in the computer of terrain simulation.⑸Achieved the visualization of the sky using the texture mapping technology .⑹Finally, after the success of drawing terrain and sky, using human-computer interaction technology ,achieved the real-time dynamic browser and control systems of the whole natural scenery. |
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