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iOS Best way to detect image overlap?

M

macfanboy

macrumors 6502a
Original poster
Jun 5, 2007
915
162
I was trying to detect when two imageviews (equally sized circles) overlap, and i was going to call a method every 0.01 seconds and using the below code. I thought there may be a better way to do this but i couldnt find out how. Any advice is greatly appreciated!
Code: 
if (image1.center.x - image2.center.x = 75) {
     if (image1.center.y - image2.center.y = 75) {
          //Whatever I want
     }
}
 
J

jpyc7

macrumors 6502
Mar 8, 2009
276
0
Denver, CO
two comments

1. Instead of checking every X seconds, you should just check whenever a circle moves. Or maybe you meant the circle movement rate was X seconds. Anyway, you get the idea that you don't need to check for overlap any faster than the circle movement rate.

2. Your logic works, but you need a 'less than' sign in front of the 75 (which I assume is the radius of the circle).
 
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