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首页> 外文期刊>ACM Transactions on Graphics >Terrain Generation Using Procedural Models Based on Hydrology
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Terrain Generation Using Procedural Models Based on Hydrology

机译:基于水文学程序模型的地形生成

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We present a framework that allows quick and intuitive modeling of terrains using concepts inspired by hydrology. The terrain is generated from a simple initial sketch, and its generation is controlled by a few parameters. Our terrain representation is both analytic and continuous and can be rendered by using varying levels of detail. The terrain data are stored in a novel data structure: a construction tree whose internal nodes define a combination of operations, and whose leaves represent terrain features. The framework uses rivers as modeling elements, and it first creates a hierarchical drainage network that is represented as a geometric graph over a given input domain. The network is then analyzed to construct watersheds and to characterize the different types and trajectories of rivers. The terrain is finally generated by combining procedural terrain and river patches with blending and carving operators.
机译:我们提供了一个框架,该框架允许使用受水文学启发的概念对地形进行快速直观的建模。地形是从一个简单的初始草图生成的,并且其生成受一些参数控制。我们的地形表示既是分析性的又是连续的,可以通过使用不同级别的细节进行渲染。地形数据存储在一种新颖的数据结构中:一棵构造树,其内部节点定义操作的组合,并且其叶子代表地形特征。该框架使用河流作为建模元素,它首先创建一个分层的排水网络,该网络以给定输入域上的几何图形表示。然后对该网络进行分析,以构建分水岭,并表征河流的不同类型和轨迹。通过将程序性地形和河流斑块与混合和雕刻运算符组合在一起,最终生成地形。

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