将满足插值和离散性质的“四点法”运用于地景仿真，调整其“形状参数”可产生所期望的地形形状。为了产生丰富的地貌特征，一方面，用几何纹理生成法；另一方面，在定义场景的ＧＬ光照中，通过更新材料、光源和光照模型属性，真实感显示地表细节。实验表明，该方法能简单、快速模拟一些受环境、树木、土壤、气候等影响的地景，为自然景观仿真提供了一种有效手段。

In this paper, the four-interpolatory scheme is applied in simulating topography. In order to control the form of topography, the proper“control-parameters”are chosen. For the sake of getting variant ones, geometric texture-rendering methods are applied. In the mean- time, patches are really displayed in GL environment bymodifyingthe property of the material, the light and the lightmodel. The experimental results showthat the algorithm offers an efficientmeans for simulation of natural scene which effected by the surrounding, the trees, the climate and so on.