1. ## Collision bounce angle.

What is the proper way to convert a angle correctly when bouncing out of a circular area?

I am able to get the bounce angle of a flat surface by reversing the angle but when you hit a circular area it has been more of a challenge. Could some one recommend some website/tutorial where I can find more information about this issue?

2. Hello fusionpixel

Welcome to Math Help Forum!
Originally Posted by fusionpixel
What is the proper way to convert a angle correctly when bouncing out of a circular area?

I am able to get the bounce angle of a flat surface by reversing the angle but when you hit a circular area it has been more of a challenge. Could some one recommend some website/tutorial where I can find more information about this issue?
It's very straightforward: draw the tangent to the circle at the point of contact, and treat the bounce as if the ball had hit the (straight line) tangent instead.

3. Originally Posted by fusionpixel
What is the proper way to convert a angle correctly when bouncing out of a circular area?

I am able to get the bounce angle of a flat surface by reversing the angle but when you hit a circular area it has been more of a challenge. Could some one recommend some website/tutorial where I can find more information about this issue?
Bouncing off a circular surface, concave or convex is treated in a similar manner.
You need to know the center of the circle, radius & point of contact.