期刊文献+

一种凸多面体的阴影生成方法 被引量:3

A Method of Convex Object's Shadow Generation
下载PDF
导出
摘要 阴影生成是使三维场景具有真实感的重要方式之一。以往的阴影生成算法是对点和面进行处理的,而该文中的阴影生成算法只针对点进行处理。由于任何物体都可以分解成若干个凸多面体,所以凸多面体的阴影生成很有研究价值。该文将凸壳技术应用于三维场景的阴影生成中,形成一种凸多面体的阴影生成方法,并用OpenGL技术实现。该文简述了OpenGL技术和阴影生成技术的基本原理,用OpenGL生成的三维场景模型进行检验,并叙述了场景的组织结构和阴影生成的实现过程,最后生成了较真实的阴影。 Shadow generation is one of many important ways that can make the scene possessing three_dimensional effect.In previous shadow generation algorithm,they dealt with points and planes,but in the algorithms of the paper we only deal with points.Since any object may be decomposed into some convex object, the research of convex object's shadow generation is valuable.In the paper,convex hull technology is used in shadow generation of scene, and a shadow generation algorithm of convex object, is obtained and realised in OpenGL.In the paper,we simply narrate the theory of OpenGL and shadow generation algorithm,then test the method in scene generated by OpenGL . The scene's organization structure and the shadow generation process are narrated, too.In the last,we get the comparatively real shadow.
作者 李丽 战守义
出处 《计算机仿真》 CSCD 2004年第5期133-135,189,190,共5页 Computer Simulation
关键词 阴影 本影 半影 凸壳 Shadow Umbra Penumbra Convex hull
  • 相关文献

参考文献3

  • 1R L Graham . An efficient algorithm for determining the convex hull of a finite planar set [ C ]. Info. Proc. Lett., 1972, ( 1 ): 132 - 133.
  • 2孙家广.计算机图形学(第三版)[M].北京:清华大学出版社,2002..
  • 3RichardSWright Jr MichaelSweet.OpenGL超级宝典(第二版)[M].人民邮电出版社,2001-6..

共引文献9

同被引文献14

  • 1张俊兰,冯伍,高文全.几种典型消隐面算法的性能分析[J].延安大学学报(自然科学版),2006,25(1):17-20. 被引量:2
  • 2于文洋,杨崇俊,乐小虬,陈飞翔.三维复杂场景管理研究[J].计算机工程与应用,2006,42(13):38-40. 被引量:8
  • 3刘恒,江南,魏楠.基于BSP树的启发式阴影生成算法[J].计算机仿真,2006,23(6):220-223. 被引量:2
  • 4MASON WOO,JACKIE NEIDER,TOM DAVIS.OpenGL编程权威指南(第三版)[M].北京:中国电力出版社,2001.
  • 5Frankin C Crow.Shadow Algorithms for Computer Graphics[C].In Computer Graphics (Proceedings of ACM SIGGRAPH 77),July 1977,ACM:242-248.
  • 6Samuel Ranta-Eskola.Binary Space Partitioning Trees and Polygon Removal in Real Time 3D Rendering[D].Sweden:Information Technology Computing Science Department Uppsala University.2001.8-9.
  • 7Harlen Costa Batagelo,Ilaim Costa Junior.Real-Time Shadow Generation Using BSP Trees and Stencil Buffers[C].Brazilian Symposium on Computer Graphics and Image Processing,1999.93-102.
  • 8[美]罗杰斯(Rogers,D.F.)著,石教英,等译.计算机图形学的算法基础[M].北京:机械工业出版社,2002.
  • 9LUEBKE D, ERIKSON C. View-dependent simplification of arbitrary polygonal environments[J]. Computer Graph its, 1997,31(3) :199 - 208.
  • 10Harlen Costa Batagelo, Ilaim Costa Junior. Real-time shadow generation using BSP trees and stencil buffers[ M]. Brazilian Symposium on Computer Graphics and Image Processing, 1999:93 - 102.

引证文献3

二级引证文献4

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部