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2014/10/15 ¤U¤È 10:05:28

iphone Programming Glossary: constrain

How can I enforce an specific direction (i.e. clockwise) of rotation in Core Animation?

http://stackoverflow.com/questions/1149635/how-can-i-enforce-an-specific-direction-i-e-clockwise-of-rotation-in-core-ani

rotating it with 40 degrees. So the object rotates the other way around with a shorter amount of movement. I want to constrain it to rotate clockwise. Would I have to do that by changing animations in little steps or is there an more elegant way ..

Drag UIView around Shape Comprised of CGMutablePaths

http://stackoverflow.com/questions/13664615/drag-uiview-around-shape-comprised-of-cgmutablepaths

iphone ios cocoa touch share improve this question This is an interesting problem. We want to drag an object but constrain it to lie on a CGPath . You said you have œa simple oval shape but that's boring. Let's do it with a figure 8. It'll look..

UIView. How do I constrain scaling to one dimension only

http://stackoverflow.com/questions/1423119/uiview-how-do-i-constrain-scaling-to-one-dimension-only

How do I constrain scaling to one dimension only I have an instance of UIScrollview containing an instance of UIView. The UIView is just a.. array of UIImageView instances. Zooming is provided by UIScrollView and UIScrollViewDelegate. I would like to constrain zooming to occur only along the horizontal axis with no vertical scalling at all. How to I do this Is there a way for example.. From the documentation on how CGAffineTransform matrices are constructed I believe the following implementation should constrain your scaling to be just along the horizontal direction void setTransform CGAffineTransform newValue CGAffineTransform constrainedTransform..

resize and crop image centered

http://stackoverflow.com/questions/3955189/resize-and-crop-image-centered

self.CGImage outputImage UIGraphicsGetImageFromCurrentImageContext UIGraphicsEndImageContext inputSize newSize constrain crop rect to legitimate bounds if cropRect.origin.x inputSize.width cropRect.origin.y inputSize.height return outputImage..

Force UIViewController to only show in landscape mode

http://stackoverflow.com/questions/5339662/force-uiviewcontroller-to-only-show-in-landscape-mode

set. I recently had this question answered on a bounty and my app rejected in the process. Read up on that here How to constrain autorotation to a single orientation for some views while allowing all orientations on others The only solution you have..