摘要
以虚拟城市场景的显示和动态浏览为目标 ,研究了城市模型数据的存储优化、贴图数据的压缩处理、模型的动态拾取和变换处理、场景浏览视点的控制和视见体的裁剪等相关技术和方法 ;实现了以建筑模型和植物景观模型为主体的的城市虚拟场景。这些技术和方法较好地解决了模型数据和贴图数据的导入和处理问题 ,大大节省了模型存储空间 ,提高了场景浏览的显示速度 ,为用户提供了一个方便的城市场景的浏览环境。
In order to build and browse the virtual scene of city, it researches the techniques with OPENGL, such as image data optimization and compressing, controlling the viewpoint, cutting view, picking up and transforming the models. It sets up the virtual city mainly about the data of architecture models and plants. The example shows that the techniques can save the space of model data, improve the speed of browsing the virtual scene.
