Both stress nephogram and stress ribbon image are drawed through changing the colour functions.Stress isoline image is made by using the methoh of pursuing contour line .

• 论述了坐标旋转变换在凸轮廓线设计中的应用,对几种常见凸轮廓线的设计举例说明,并给出了明确的直角坐标表达形式。