Grasshopper Kangaroo inflation through grid

[Gesa_H (Gesa)]

Hi there,
I am trying to inflate a surface through different grids with kangaroo
but I can’t seem to anchor the grid while inflating the original loftet surface.
Inflated_pattern.gh (45.0 KB)

Kind regards
Gesa

[martinsiegrist]

The forum has many examples…

Here’s one of mine:

Inflate an Object inside a cage

Hey Weston, the anchor you set doesn’t do anything because it doesn’t share a location with the mesh. The pipes your balloon is supposed to collide with are very thin compared to the mesh division. The mesh sphere needs to be refined for a good collision. To prevent it from sliding out, you can add another object and keep the vertices out of that with a Solid Point collision goal. I think the normal solver does a better job than the bouncy solver… [image] [image] anchor inflation issue.g…

[Gesa_H (Gesa)]

Thanks for the tip!
I tried to connect it to my geometry but it doesn’t seem to work.
Could you take a look?

15_04_2025_inflate_collision.gh (178.2 KB)

[martinsiegrist]

Two things…

1. the solid input should likely be one closed solid. I shrinkwrapped all your objects with 0.02 units edge length.

2. the pink mesh needs more vertices to bend / inflate into the gaps of your grid. I think the starting position of the mesh should not be inside the solid it collides with.

15_04_2025_inflate_collision mrtn.gh (219.2 KB)

There are faster ways to create a better looking result. Unless your grid divisions are all different, I think I would only run the collision with a few individual cells and orient the inflated meshes to all the other cells. This way you could increase the resolution of the pink mesh without having to wait for the result.

[Gesa_H (Gesa)]

Okay I’ll try that. Thank you!!