摘要
树木的动态显示在自然场景模拟中有着重要的地位。采用Cook-Torrance光照明模型和预计算的半透明贴图实现了叶片的绘制,使用梁模型导出的拟合多项式结合偏移修正实现枝干的快速形变计算,通过索引枝干层级数据贴图实现GPU中多级枝干的形变。预计算和GPU的使用使得模拟过程中真实感和实时性得以平衡。实验结果表明,该方法实现了快速真实的动态树场景渲染。
Dynamic tree rendering plays an important role in the natural scenery simulation. In this paper, by using Cook-Torrance lighting model and pre-computed translucency texture, rendering scattering and translucency of the leaf were implemented. Using the polynomial fitted from tapered circular beam model expression and length correct method, the speed of calculation deform was boosted. By introducing the hierarchical branches texture with index, branches deform could be calculated in Graphic Processing Unit （GPU）. Using pre-compaction and GPU helps to balance the reality and real-time in the simulation. The experiments show that the proposed method can render the dynamic tree scene vividly and rapidly.
出处
《计算机应用》
CSCD
北大核心
2013年第6期1711-1714,共4页
journal of Computer Applications
关键词
树场景
叶片渲染
半透明
物理动画
图形处理器
tree scene
leaf rendering
translucency
physical animation
Graphics Processing Unit （GPU）
