摘要
在地理信息系统应用开发中进行矢量图形显示时,为加快显示速度和受显示范围的限制,通常要采用一定的区域剪裁方法进行处理。本文提出一种基于圆形区域的剪裁方法,该方法比基于矩形区域的剪裁在算法上更为简洁,同时也具有较高的执行效率。
In order to accelerate operation speed and limited by data range,the method of region clip-ping is frequently used in displaying vector graph is GIS application development.In this paper,the au-thor put forward a clipping method based on circle region,it is more concise than the method based on rectangle region and the process efficiency is considerably high.
出处
《测绘工程》
CSCD
2002年第4期33-35,共3页
Engineering of Surveying and Mapping
基金
地理信息科学江苏省重点实验室开放基金资助项目(200104)。
