椭圆拉伸变形长短轴的计算及应用

Calculation and Application of Major and Minor Axis of Stretched and Slopped ellipse

在CAD应用软件程序编制中,椭圆的长短轴是很重要的参数。应用相关数学知识推导出6个计算公式,可利用这些公式确定椭圆沿坐标轴拉伸变形后的长短轴大小与位置并在CAD软件中实现与之相关的功能。

Parameters of major and minor axis of ellipse are very important in programming of CAD application software.This paper gives six formulas with the relative mathematic knowledge and decides the direction and positions of major and minor axis of stretched and slopped ellipse by the formulas,and implements the relative functions in CAD software.