Right Cylinder 圆柱体 2.Getting points on the surface of a right cylinder 圆柱体表面取点 Method:It could be obtained on the circle following 方法 the projection principle and accumulation. 利用有积聚性的圆投影求之。 Distinguish:Limit elements are usually the boundary between visible and 判别 invisible regions of the corresponding projection direction. 转向轮廓线通常是回转面上对某投射方向可见部分与 不可见部分的分界线。 Label All invisible points are written in brackets. 标注 对不可见的点加括号以示区别。 Example1.Draw a right cylinder and get points on the surface. 画圆柱及表面上点的三视图 请点击鼠标左键显示后面内容4 Limit elements are usually the boundary between visible and invisible regions of the corresponding projection direction. 转向轮廓线通常是回转面上对某投射方向可见部分与 不可见部分的分界线。 Method： 方法 It could be obtained on the circle following the projection principle and accumulation． 利用有积聚性的圆投影求之。 2.Getting points on the surface of a right cylinder 圆柱体表面取点 Distinguish: 判别 Label： 标注 All invisible points are written in brackets. 对不可见的点加括号以示区别。 请点击鼠标左键显示后面内容 Example1. Draw a right cylinder and get points on the surface. 画圆柱及表面上点的三视图 Right Cylinder 圆柱体