本示例演示了从文件中读取数据点并把读取的点在UG中画出来，然后根据每个截面上的点拟合成样条曲线并对曲线进行光顺等操作，最后通过曲线创建曲面的过程-This example shows data points read from the file and to read the points drawn in the UG, then the points on each section of the proposed synthetic curves and spline smoothing a

lisp语言 加载后可直接做出工字钢的截面-After loading lisp language can make a section of I-beam direct