摘要
为了解决传统图形拾取算法在应用于地理信息系统时出现的一些问题,本文以射线定理为指导思想,提出了一种用于封闭图形拾取的改进算法,并结合具体环境对该算法进行了简化。
In this paper, a modified algorithm for picking a closed graphics is presented, which uses the theory of Ray Proposition and can settle some problems the traditional algorithm can't do in Geographic Information System. The simplified method of this algorithm in certain conditions is also given.
出处
《燕山大学学报》
CAS
2004年第6期516-519,共4页
Journal of Yanshan University
