三维树木的真实感模拟

为了降低虚拟场景中树木等非规则景物的模拟难度,提出了一种基于L系统的树木模拟方法.针对树木真实感不足的问题,提出了4种改进方法.在阐述了L系统的基本思想的基础上,构造了三维树木模型,引入随机性使树木生成各种形态,模拟了风力影响下的树木形态,通过LOD技术和阴影效果提高了树木绘制的真实感.实验结果表明,该方法可以有效地模拟具有多种形态的树木,同时使树木的真实感更强.

Realistic simulation of three-dimensional trees

To decrease the simulation difficulty of the irregular nature scenery such as the tree, a simulation method of real tree based on L system is constructed. To overcome shortcomings of the reality of tree simulation, four upswing methods are proposed. On the basis of the basic algorithm of L system, 3D tree model is constructed. The randomicity is used to make tree generate a variety of patterns, and the shape of tree is simulated under the influence of wind, then it takes advantage of LOD and shadow to enhan...