基于不规则四面体的矿床三维体视化模型

根据插值得到的矿床规则体数据的品位空间分布,将体数据分为若干段.对不同品位段内部进行三维Delaunay划分并抽取其表面,形成了以不规则四面体为体元的体模型.把各品位段模型进行整合,实现对矿床的仿真.用"局部建模,整合显示"的思想解决了绘制速度和细节表现的矛盾,给出了体模型的矿床储量计算方法.整个模型用OOA分析,建立了模型的基础类数据结构,有良好的应用性和扩展性.

Mine model of volume visualization based on irregular tetrahedral

According to the grade spatial distribution of regular volume data from interpolation,the deposit volume data was divided into several sections. The 3D Delaunay algorithm was adopted to separate the 3D point set in each section and to extract the surface of those points,and the local model based on irregular tetrahedral was built up. All of the local models were composed by OpenGL's blend technique to achieve the simulation process of deposit. The idea of "the part model building,the conformity displays" was used to resolve the contradiction between rendering speed and detailed expression and give out the method of mineral reserve computation. The model analyzed with OOA constructs the data structure of base class,and has well applications and expansibility.