total area of intersecting rectangles

Question

I need an algorithm to solve this problem: Given 2 rectangles intersecting or overlapping together in any corner, how do I determine the total area for the two rectangles wi

Answer 1

Sorry to come to the party late. I dont know if you are looking language specific : But on iOS its pretty easy :

CGRectIntersection

https://developer.apple.com/library/ios/documentation/GraphicsImaging/Reference/CGGeometry/#//apple_ref/c/func/CGRectIntersection

It would give you CGrect that is overlappring by given two rects. if they are not intersecting is would return CGRectIsNull.

hope this help at least someone. Happy coding