MeshCollider bake options

[yiwenxue]

Use Case

Currently, the mesh collider must use the original data of the assigned mesh. Consequently, if the original mesh is highly complex, it can significantly decrease performance. While it's possible to assign the mesh collider with a simplified mesh, this means users would need to maintain two separate meshes, which increases complexity.

To address this, a bake panel could be introduced for the mesh collider, providing an additional option to configure the mesh collider.

1. Bake panel

   1. Mesh simplify ratio (0-100%)
   2. Mesh optimization
   3. ...

2. Bake process The mesh collider component relies on the assigned mesh asset. When the mesh asset is updated, the mesh collider should also be baked to reflect the changes. The baked data is stored in a buffer asset.

   1. Mesh optimization
   2. Mesh simplification

3. Load process During component initialization, the buffer asset containing the baked mesh data is acquired.

4. Data storage The data is stored in a buffer asset, supporting two formats:

   1. Converted mesh: Contains only vertex positions.
   2. Indexed mesh: Includes both vertex positions and triangle faces.

5. Bonus

   1. Compression/decompression capabilities.

Problem Description

None

Proposed Solution

No response

How it works

No response

Alternatives Considered

None

Additional Information

No response

[yiwenxue]

mesh collider incorrect transform

[yiwenxue]

https://github.com/cocos/3d-tasks/issues/17615

[yiwenxue]

https://github.com/cocos/cocos-engine/issues/16053

[yiwenxue]

mesh collider incorrect scale