Hello guys!

I need to make a cloth simulation of closing umbrella.
How can i make selection by proximity of “wires” of umbrella and cloth part dynamically?

because i try with ClothAttachConstraint, but i will need change resolution of cloth for various tests, and this way i lost my “point selection” of constrained points because IDs change on resolution change…

How can i make dynamic constraints/selection that adapt to point density change of cloth, by volume?

i'm a beginner on Houdini, i am coming/migrating from ICE…

help please.

thanks in advance.

Instead of creating your group manually try to make it more automatic by using the boundingbox solution.

Good luck

you can just resample the wires, group all points on them then transfer that group using Group Transfer SOP, it works based on proximity so you can limit the max distance

Thanks Tomas!
:

Very nice solution Tomas.

but, is it possible to do something similar with some “weighting” by proximity, like some “feather”?

you cannot have groups with falloff as each point is either in the group or not
but you can create attribute with falloff by proximity

the easiest method is Attribute Transfer SOP, which has blend width parm to specify falloff