simulation of rainfall collision

Replies to This Discussion

Permalink Reply by Dapeng Sun on February 8, 2014 at 8:28am

I change another mesh and it works well,but why this mesh can not?I need do it with this one.

Permalink Reply by Daniel Piker on February 8, 2014 at 8:42am

If you are using CollideMesh then the mesh needs to be a closed volume, so the collisions can distinguish between inside and outside. For your mesh you could offset it into a solid mesh using Weaverbird.

However, if you just want to trace the way rain runs down the surface, a much faster option is to use PullToMesh, which does work on open meshes (definition below):

Attachments:

• drainage_direction.gh, 13 KB

Permalink Reply by Dapeng Sun on February 9, 2014 at 5:56am

Daniel,Thank you very much!

The way of PullToMesh or PullToSurface is much clearer than the use of Collide surface.

and it gives a good result.