2014/10/15 下午 10:05:00

iphone Programming Glossary: cgaffinetransformconcat

Applying multiple transforms to a UIView / CALayer

http://stackoverflow.com/questions/1111277/applying-multiple-transforms-to-a-uiview-calayer

this doesn't answer the question entirely or come close but if you're only working with CGAffineTransforms you can use CGAffineTransformConcat to combine multiple transforms. This will work just fine when some transforms are animated and others are not as long as..

how to control orientation of video assembled with AVMutableComposition

http://stackoverflow.com/questions/4175060/how-to-control-orientation-of-video-assembled-with-avmutablecomposition

stretch I suspect it'll be a CALayer defaultTransform or UIView property causing this CGAffineTransform finalTransform CGAffineTransformConcat shrinkWidth CGAffineTransformConcat translateToCenter rotateBy90Degrees rotator setTransform finalTransform atTime kCMTimeZero.. defaultTransform or UIView property causing this CGAffineTransform finalTransform CGAffineTransformConcat shrinkWidth CGAffineTransformConcat translateToCenter rotateBy90Degrees rotator setTransform finalTransform atTime kCMTimeZero instruction.layerInstructions..

UIPicker sizing in landscape mode

http://stackoverflow.com/questions/535164/uipicker-sizing-in-landscape-mode

CGAffineTransformScale rotate .46 2.25 CGAffineTransform t0 CGAffineTransformMakeTranslation 3 22.5 picker.transform CGAffineTransformConcat rotate t0 self.view addSubview picker picker release Then I like to add a background image for my view that covers up the..

How to combine video clips with different orientation using AVFoundation

http://stackoverflow.com/questions/6575128/how-to-combine-video-clips-with-different-orientation-using-avfoundation

setTransform transform atTime CMTimeMakeWithSeconds time 30 else float s size.width size.height CGAffineTransform new CGAffineTransformConcat transform CGAffineTransformMakeScale s s float x size.height size.width s 2 CGAffineTransform newer CGAffineTransformConcat.. transform CGAffineTransformMakeScale s s float x size.height size.width s 2 CGAffineTransform newer CGAffineTransformConcat new CGAffineTransformMakeTranslation x 0 layerInstruction setTransform newer atTime CMTimeMakeWithSeconds time 30 ok compositionVideoTrack..