The application of texture mapping technology can strengthen the reality and increase the rendering speed of the 3d scene.
纹理映射技术的应用能增强三维场景绘制的真实感，并能提高三维场景的渲染速度。
Models at multiple level of detail are widely used in real time rendering of complex 3d scene, flight simulator, 3d animation, interactive visualization, and virtual reality.
它可用在复杂3d场景快速绘制、飞行模拟器、3d动画、交互式可视化和虚拟现实等应用系统中。
It is significant to construct a suitable terrain model for real-time rendering terrain scene, simulating terrain environment in reality and achieving analysis functionality in VTE.
建立合理的三维地形模型，对于实现实时绘制虚拟地形场景，逼真模拟地形环境，实现虚拟地形环境中的分析功能及其它相关控制有着重要的意义。
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