How to create flow paths on poly-surface

Hi my friends,
Is there a way to create flow paths on the poly-surface as illustrated on the image? Can anyone give me some suggestion? much appreciated

formConcept_rh5.3dm (446.7 KB)

Hi @yhxbarking,

There is a GH Plugin that is Gismo can do this. Maybe you want to look it.


Thanks, @oguzhankoral, very appreciated