maya粒子生成曲线
把粒子的位置转换成一条nurbs曲线的控制点，每一帧将这些数据传给nurbs曲线。

主要用这个mel函数.附件里

步骤：

1，创建一个粒子发射器，粒子名字为particleShape1，

2，再随意画一条nurbsCurve,曲线名字为curveShape1,

3，将下载的mel文件在maya里source一下,

4，创建一个表达式内容为：makeCurveFromParticle("particleShape1","curveShape1");

5，播放动画，ok。(Maya particle generation curve
The position of the particle is converted into a control point of a NURBS curve, and each frame passes the data to the NURBS curve.

The main use of this Mel function.

Step:

1, create a particle emitter whose name is particleShape1,

2, draw a nurbsCurve at will, and the name of the curve is curveShape1.

3, the downloaded Mel file is source in the Maya,

4, create an expression content: makeCurveFromParticle ("particleShape1", "curveShape1");

5, play animation, OK.)