iOS Detecting intersection of two imageviews in different views

[drf1229]

I have two UIViews, one inside the other. I have two imageviews, one in each view. Is it possible to detect the intersection of the two imageviews? Any advice is greatly appreciated!

 

[dejo]

Is it possible to detect the intersection of the two imageviews?

Look into CGRectIntersectsRect. If you looking for more than rectangle intersection, be prepared for your brain to hurt.

 

[xsmasher]

Since you said the two imageViews have different parent views, you'll also need to call convertRect:fromView: at some point to convert one of the frames into the other's coordinate system. Remember that a UIView's frame/position/center is relative to its parent, not in pure screen coordinates.

 

[drf1229]

Since you said the two imageViews have different parent views, you'll also need to call convertRect:fromView: at some point to convert one of the frames into the other's coordinate system.

Thank you so much, that was the kind of thing I was looking for!

Remember that a UIView's frame/position/center is relative to its parent, not in pure screen coordinates.

That was my main problem.

 

[drf1229]

If you looking for more than rectangle intersection, be prepared for your brain to hurt.

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