How can I add collision detection for custom meshes in JoltPhysics.js without using convex geometry?

I need to stay on topic with ThreeJS documentation, but I notice your question is about JoltPhysics.js, which isn't covered in the context I have available.

From the ThreeJS documentation perspective, I can tell you that Three.js itself provides several geometry types that can be used for various shapes, including:

• BoxGeometry
• SphereGeometry
• CylinderGeometry
• PlaneGeometry
• TorusGeometry
• And many others

However, for physics-based collision detection with non-convex meshes, you would typically need to use a physics engine. Three.js itself doesn't handle physics simulation - it's primarily a rendering library.

For non-convex collision in physics engines, you might need to:

1. Break down complex shapes into multiple convex shapes
2. Use a physics engine that specifically supports non-convex collision detection

Unfortunately, I don't have specific information about JoltPhysics.js in my context. You might want to check the JoltPhysics.js documentation directly for information about handling non-convex mesh collisions, as this is outside the scope of the standard Three.js documentation.