A Rectangle Line Pattern with a random option.
Also the files show, hot how to project on a NURBS Surface. This 3D Projection contains two additional custom nodes.
1. GetZatXY (Also used in many other examples on the community board)
2. GetZamong Pt. Not so easy to understand. This nodes calculates the z value of a 2D Point between two 3D Points without trigonometry (faster).
Movie Link (2nd Part of Movie)