How do I extract the normal direction of a point on a surface?

[zfq947254420]

I want to find the normal direction of each point on the surface and control each point to move in the normal direction. I hope you can help me.

曲面上的点的法向方向.gh (15.2 KB)

[diff-arch]

Hi,

It’s quite simple:

曲面上的点的法向方向_02.gh (12.6 KB)

[zfq947254420]

Thank you very much for your answer.