摘要
分析了解析几何法的符号绘制算法,采用了几何变换实现图形绘制的算法,实现了椭圆弧的采集、编辑及Bezier曲线和椭圆弧外接矩形的算法。
The disadvantages of symbol drawing algorithms were analyzed based on the analytic geometry method, and in implementing graphic drawing avere discussed. We realized the ellipse＇s collection and edit using the geometric transformation method, and the algorithm of computing Bezier curve＇s and ellipse arc＇s envelope.
出处
《测绘信息与工程》
2009年第3期45-47,共3页
Journal of Geomatics
关键词
解析几何法
几何变换
采集
编辑
转换矩阵
analytic geometry method
geometric transformation
collection
edit
