FlOWING PATTERN ACROSS IRREGULAR MESH

Hello
there are many possibilities, it would be better if you provide a sketch of what you want.
You can project the pattern on a surface without holes and then eliminate what you don’t want.

On a second solution the idea is to generate the main triangles containing the pattern. You’ll have to generate it with a mesher. There are many options

I am sure your script could be simplified but it works, you’ll have to add the attractors for the opening.

Patternee.gh (23.7 KB)