。720· 北京科技大学学报 2006年第8期 向、任意角度的剖切，使物体外部形状和内部构造 2004,02(3):13 同时得到反映，局部和整体之间的关系看得更加 【4吴立新，史文中.3DGS与DGMS中的空间构模技术地 理与地理信息科学，2003,19(1) 真切，提高了实用性和表现力.矿床体视化仿真 【匀齐安文，吴立新.基于类三棱柱的三维地质模拟与拓扑研 模型是一个复杂的系统工程，牵涉到的知识广，理 究.矿山测量，2003(3)：64 论深，模型需要有很好的兼容性和可扩展性，整个 【6郭际元.龚君芳.由三维离散数据生成四面体网格算法研 体视化模型用面向对象分析(OOA)思想建立，利 究.中国地质大学学报.2002.27(3)：271 用封装、重载、继承等特性编程，保持了模型的独 [7 Steiner D C.Verdiere E C,Yvinec Mariette.Conforming De- 立性，同时给将来的持续改进留下空间. launay triargulations in 3D /Proceedings of the 18th Anmal Symposium on Computational Geometry.Barcelona,2002: 参考文献 199 【阁李清泉.三维空间数据的实时获取、建模与可视化.武汉： [刂李翠平，李仲学.矿床仿真模型中光线投射法的改进.金属 武汉大学出版社，2003 矿山，20038)：8 【身朱灵法，杨鹏。克立格组件及其开发。北京：中国矿业， 【☒冯超东，杨鹏.基于体视化技术的矿床数据库管理信息系 2004,13(12):64 统.北京科技大学学报，2005.27(1)：9 [1g郑贵州，申永利.地质特征三维分析及三维地质模拟现状 [3)吴立新.真3维地学构模的若干问题。地理信息世界， 研究.地球科学进展2004.19(2)：218 Mine model of volume visualization based on irregular tetrahedral XIONG Lei,YANG Peng,LI Hey ing Key Lab of the Ministry of Education for High Efficient Mining of Metal Deposit,Beijing 100083.China ABSTRACT According to the grade spatial distribution of regular volume data from interpolation,the de- posit 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 w as 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 analy zed w ith O0A constructs the data structure of base class,and has well applications and expansibility. KEY WORDS volume visualization;mine model;irregular tetrahedral;Delaunay triangulation (C)1994-2021 China Academic Journal Electronic Publishing House.All rights reserved.http://www.cnki.net向、任意角度的剖切, 使物体外部形状和内部构造 同时得到反映, 局部和整体之间的关系看得更加 真切, 提高了实用性和表现力 .矿床体视化仿真 模型是一个复杂的系统工程, 牵涉到的知识广, 理 论深, 模型需要有很好的兼容性和可扩展性, 整个 体视化模型用面向对象分析( OOA) 思想建立, 利 用封装、重载、继承等特性编程, 保持了模型的独 立性, 同时给将来的持续改进留下空间 . 参 考 文 献 [ 1] 李翠平, 李仲学.矿床仿真模型中光线投射法的改进.金属 矿山, 2003( 8) :8 [ 2] 冯超东, 杨鹏.基于体视化技术的矿床数据库管理信息系 统.北京科技大学学报, 2005, 27( 1) :9 [ 3] 吴立新.真 3 维地学构模的若干问题.地理信息世界, 2004, 02( 3) :13 [ 4] 吴立新, 史文中.3D GIS 与 3D GMS 中的空间构模技术.地 理与地理信息科学, 2003, 19( 1) [ 5] 齐安文, 吴立新.基于类三棱柱的三维地质模拟与拓扑研 究.矿山测量, 2003(3) :64 [ 6] 郭际元, 龚君芳.由三维离散数据生成四面体网格算法研 究.中国地质大学学报, 2002, 27( 3) :271 [ 7] S teiner D C, Verdiere E C, Yvinec Mariett e.Conforming De￾launay triangulations in 3D ∥Proceedings of the 18th Annual Symposium on Computational Geometry .Barcelona, 2002: 199 [ 8] 李清泉.三维空间数据的实时获取、建模与可视化.武汉: 武汉大学出版社, 2003 [ 9] 朱灵法, 杨鹏.克立格组件及其开发.北京:中国矿业, 2004, 13( 12) :64 [ 10] 郑贵州, 申永利.地质特征三维分析及三维地质模拟现状 研究.地球科学进展, 2004, 19( 2) :218 Mine model of volume visualization based on irregular tetrahedral X IONG Lei, Y ANG Peng, LI Hey ing Key Lab of the Ministry of Education for High-Effi cient Mining of Metal Deposit , Beijing 100083, China ABSTRACT According to the g rade spatial distribution of regular volume data from interpolation, the de￾posit volume data was divided into several sections .The 3D Delaunay algorithm was adopted to separate the 3D point set in each section and to ex tract the surface of those points, and the local model based on irregular tetrahedral w as 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” w as used to resolve the contradiction between rendering speed and detailed expression and give out the method of mineral reserve computation .The model analy zed w ith OOA constructs the data structure of base class, and has well applications and expansibility . KEY WORDS volume visualization ;mine model ;irregular tetrahedral;Delaunay triangulation · 720 · 北 京 科 技 大 学 学 报 2006 年第 8 期