Research On Visualization Of 3D Fractal Terrain Based On OpenGL

Realistic 3D terrain is one of the important components of virtual reality system and real time emulation. With the rapid development of virtual reality and emulation, the generation and modeling of high realistic 3D fractal terrain becomes more and more important. This thesis focuses on the establishment of 3D fractal terrain model and the achievement of the visualization system .The principal contents are as follows:This paper focuses on the theoretical and methodological studies in the several subtopics:fractal terrain simulation,3D photo-realistic terrain rendering.These studies are based on some interisplines such as 3D computer graphics,computer geometry, scientific computation visualization, and virtual reality.During the establishment of the model of terrain, it is systematically studied and carried out using fractal Brown motion method.For the fractal terrain simulation, the'diamond-square'algorithm based on random midpoint displacement is given in detail,and the model is analyzed and optimized.A 3D fractal terrain visualization system was achieved on the OpenGL and the VC++, with the construction and rendering of the terrain and the sky in the scene.