基于vb.net的autocad二次开发关于图形动态装拆模拟能使二维图形三维图形三维曲面绘制spline样条曲线路径往复运动-Vb.net based on secondary development of autocad Assembly and Disassembly on the graphical simulation of dynamic two-dimensional graphics will enable three-dimensional surface rendering o

双三次Bezier曲面的绘制,16个二维点坐标，可以旋转。-Bicubic Bezier surface rendering