摘要
目的研究计算机图形学中隐藏面和隐藏线的消除,以便更直观、更形象地获取地理、工程信息。方法剔除指定视点下明显不可见的面和线,获取可见线之后对,对有线子段用中点判断法。结果正确地得到了三维物体的投影图。结论该算法能成功地应用在仿真模拟和几何造型系统中,减少了二步消隐过程中直线直交计算的工作量,具有较好的消隐效率。
Aim In order to get a direct and vivid geographic or engineering information, in this article the elimi- nation of hidden surface and hidden line in computer graphics is studied. Methods To clear obvious hidden lines and surface at the assigned view point at first, then get the visible lines, and a the Middle-Point algorithm to the fragments of the line. Results The correct projection of three-dimensional objects is obtained. Conclusion This algorithm can be well applyed in the area of analogue simulation and geometric model system.
出处
《西北大学学报（自然科学版）》
CAS
CSCD
北大核心
2012年第6期931-934,共4页
Journal of Northwest University（Natural Science Edition）
基金
西安市科技计划基金资助项目(SF1232-5)
关键词
三维线框模型
平行投影
隐藏线
潜在可见面
3D wireframe model
parallel projection
hidden line
potential visible surface
