UG二次开发中B曲面的建立。对于仿形等情形从三坐标得到数据点生成对应的模型很实用。仔细研究会有很大的启发。这只是基础源码部分，可以单独执行的。稍加改动就可以是一个真正实用的功能部分了。-UG secondary development in the B surfaces was established. For situations such as copying data from the coordinate points to be generated corresponding to the model is very practical. Careful study will be of great inspiration. This is a basic source parts can be individually performed. Little change can be a real part of the practical features.