基于交互变形的树木三维建模研究

Research on Interactive Morphing Based 3D Modeling of Tree

通过对树枝的交互变形处理 ,提供了一种能美化树木形状的三维建模方法 .该方法由三部分组成 :基于交互变形的树木三维表示模型、树枝的交互选择机制及对所选择树枝的变形处理 .树枝变形分基本变形和综合变形两种 ,基本变形提供对树枝增删、伸缩、弯曲、旋转等简单变形操作 ;综合变形以基本变形为基础、以美学理论为准则对树木形状进行整体的美学控制 .文中提供的方法既可与现有树木生长建模方法结合使用 ,也可独立运用 ,以达到对树木形状的建模和美化处理 .

Structure of trees from aesthetic views is studied and a 3D modeling approach to beautify tree structure by interactive morphing is provided. It has three parts: interactively building the global model of tree level by level, selection mechanism of branches and morphing of branches. The branch stems are edited by simple morphing namely: adding, deleting, scaling, curving, rotating etc. Integral morphing provides aesthetic control to the tree by integrating simple morphing methods with aesthetic theory, such as the balance of spacing density, fashion of pruning, and a variety of tall and straight against lithe and graceful carriage. The proposed approach can be applied along with existing algorithms of tree growth or independently.