cgaffinetransform

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Preventing CGAffineTransform from applying incrementally

I\'m using CGAffineTransformRotate and CGAffineTransformTranslate to animate the progress of a car image (UIImageView) across the screen. The animation is controlled by a UISlide开发者_如何学运维r so[详细]

2023-03-14 06:20 分类：问答
Pinch-to-zoom UILabel

I\'m handling a pinch gesture, and I am scaling a UILabel like开发者_如何学Python this: CGFloat factor = sender.scale;[详细]

2023-03-14 00:53 分类：问答
CGAffineTransformation set the anchor?

I\'m curious about something.In my app I\'m running an animation where a view is resized a little bit.I\'m creating the transform like this:[详细]

2023-03-09 14:58 分类：问答
image rotation in touchesMoved scrubbing back and forth using CGAffineTransformMakeRotation is dropping the fps by half

in a 3D game, after optimization i have hit 60fps on an iPad2,the main runloop is in a secondary thread,[详细]

2023-03-08 20:11 分类：问答
CGAffineTransform Reset

3I have an image that gets manipulated by touch. Lets say its an image of an arrow that points up.After it\'s been rotated 180 degrees, so the arrow is pointing down now, I want to reset CGAffineTran[详细]

2023-03-05 13:32 分类：问答
CGAffineTransformMakeScale and CoreGraphics

I\'ve got a UIView overriding the drawRect: method. Now, when I\'m doing view.transform = CGAffineTransformMakeScale(recognizer.scale,1.0);[详细]

2023-03-04 01:09 分类：问答
Autorotation distorts a rotated view in iPhone

I use the view-based template to create my app, and return YES in shouldAutorotateToInterfaceOrientation to support auto-rotation. Next, I add a square testView_ object (with default auto-resizing set[详细]

2023-03-01 12:49 分类：问答
How do I get rid of these magic numbers in my rotation affine transform?

I have a view that is 320x460 (standard iPhone screen) that I want to draw as if it were in landscape mode, though the phone is not oriented that way.This seems like a simple task, which I tried to so[详细]

2023-02-27 01:38 分类：问答
How can I flip iphone front camera

I\'m make an app that needs to show camera image in realtime. For the front camera I want to flip it horizontally so it\'s not \'mirrored\'. I found the following code online. It works well with the r[详细]

2023-02-24 22:44 分类：问答
UIview core animation - rotate and setFrame at the same time

Hy, I my application I want to animate an UIView by changing it\'s position and rotation at the same time.[详细]

2023-02-20 20:30 分类：问答