Collision shapes for gltf model for physics engine

[azhong-git]

Hi Filament community,

I am curious if there are some recommended ways or future plans for getting collision shapes (like convex hull or triangle mesh) from gltf model for physics simulation. As of today, the AssetLoader only computes AABB bounds for nodes.

Ideally in C++ (I know a few javascript libraries can do this)

[romainguy]

There are no plans for this as Filament is purely a rendering engine. However you can use a library like Bullet to drive physics and compute the convex hull of any mesh. It's efficient and easy to use, highly recommended.

[azhong-git]

Thank you for suggesting Bullet. Can I get mesh from Filament to feed Bullet? (It seems someone else also asked the same question. Therefore I created a separate Q&A for this #7219, hope you don't mind)

(I use giltfio::AssetLoader and createInstancedAsset to get gltfio::FilamentAsset but it seems to me I cannot get the raw mesh from this workflow).