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Help  Collision Rope / Cloth
#1
Hey,

I want to collide ropes with cloths but can't figure out how.

My setup (one example):

I go in the Obi Cloth "Intercollisions" demo scene.
I add a Obi Rope to the Solver, the settings I leave at default.
I place the rope above the cloths.

I hit play, but the rope falls through the cloths.

Obi 7.1

Thanks!
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#2
(24-10-2025, 02:10 PM)jaripam Wrote: Hey,

I want to collide ropes with cloths but can't figure out how.

My setup (one example):

I go in the Obi Cloth "Intercollisions" demo scene.
I add a Obi Rope to the Solver, the settings I leave at default.
I place the rope above the cloths.

I hit play, but the rope falls through the cloths.

Obi 7.1

Thanks!

Check if:
1. Solver has collisions enabled (constraint)
2. Both actors can collide with each other (collision categories)
3. Check masses of particles, because if you set very heavy rope (ratio higher than 1:10) it might pass trough cloth.
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#3
Elaborating on Qriva's answer, the manual contains a troubleshooting section. There you can find steps to check why collisions might not be working:

https://obi.virtualmethodstudio.com/manu...oting.html

let me know if I can be of further help,
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