Per Pixel Collision - Code explanation

Question

I\'m currently trying to understand per pixel collision detection.

This is the code I don\'t understand:

static bool IntersectPixels(Rectangle rectan         


        

Answer 1

First up, it finds the region the two image rectangles intersect, then it iterates through each pixel in that region, and compares the alpha values of each image of each pixel. If neither has an alpha value of 0, they are both considered 'solid' and therefore colliding.