How to detect where a collision occurs on a mesh?

Unity Engine
1

Is there a way to detect where on a mesh a collision occurs without having to have multiple colliders on it?

i.e., in the image of the brick below, I’d like to be able to detect whether the brick was hit on the green, blue, orange or yellow side.

I have a ball that is traveling in circles, so I need to know where it hits in order to make it “bounce” properly while still traveling in a circle.

2

the collision object you get upon OnCollision actually contains a point, thats the point in space where it happened. you can also get the normal, which is what you actually need for the bounce calculation