2014/10/15 下午 10:05:05

iphone Programming Glossary: cgrectintersectsrect

How to find whether two objects intersect each other?

http://stackoverflow.com/questions/11642947/how-to-find-whether-two-objects-intersect-each-other

This is what I would normally use to test for intersections. However I'm not sure if it would work mid animation. if CGRectIntersectsRect bbl1Obj.frame bbl2Obj.frame They are intersecting It that didn't work for testing for intersections while currently animating.. CALayer bb1Obj.layer presentationLayer CALayer bbl2ObjPresentationLayer CALayer bb2Obj.layer presentationLayer if CGRectIntersectsRect bbl1ObjPresentationLayer.frame bbl2ObjPresentationLayer.frame They are intersecting So if the first way doesn't work the..

how do you determine spacing between cells in UICollectionView flowLayout

http://stackoverflow.com/questions/13017257/how-do-you-determine-spacing-between-cells-in-uicollectionview-flowlayout

CGRectMake 0 currentFrame.origin.y self.collectionView.frame.size.width currentFrame.size.height if CGRectIntersectsRect previousFrame strecthedCurrentFrame if current item is the first item on the line the approach here is to take the current..

Objective-C check if subviews of rotated UIViews intersect?

http://stackoverflow.com/questions/15710853/objective-c-check-if-subviews-of-rotated-uiviews-intersect

C check if subviews of rotated UIViews intersect I don't know where to start with this one. Obviously CGRectIntersectsRect will not work in this case and you'll see why. I have a subclass of UIView that has a UIImageView inside it that is placed..

viewWillAppear for subviews

http://stackoverflow.com/questions/2950309/viewwillappear-for-subviews

collision detection

http://stackoverflow.com/questions/3584810/collision-detection

How do I detect whenever two UIImageView overlap?

http://stackoverflow.com/questions/4929747/how-do-i-detect-whenever-two-uiimageview-overlap

imageone. How Do I do this iphone objective c iphone sdk 3.0 ios4 share improve this question You can use the CGRectIntersectsRect function to easily test rectangle intersection provided the UIImageViews share the same superview more exactly have the.. the same coordinate space . Likely you will need to add code like the following void touchesEnded NSSet touches if CGRectIntersectsRect imageViewA frame imageViewB frame NSLog @ Do something. to the UIView that hosts both image views or a similar method that..

sample code for collision detection in iPhone sdk

http://stackoverflow.com/questions/5620510/sample-code-for-collision-detection-in-iphone-sdk

problem with collision of two images

http://stackoverflow.com/questions/5926355/problem-with-collision-of-two-images

have a lot of colliding objects you may hit a wall using UIViews. To complicate things more if your objects are round CGRectIntersectsRect won't exactly work. That complicates the math a bit but it's not too bad. With my app I found it quite difficult to get..