What is: MirroredCollision, NonMirrored Collision and DoubleSidedGeometry?


i have already read the thin explanation about “MirroredCollision”, “NonMirrored Collision” and “DoubleSidedGeometry”, but i do not know exactly what they are and when they are needed.

I am working on a custom procedural mesh that shall use performance as little as possible.

So regarding to collision i need to know exactly what “MirroredCollision”, “NonMirrored Collision” and “DoubleSidedGeometry” means.

If anyone can explain me as simple as possible so i can decide if i need to generate these extra things.

Thanks in advance