2014/10/15 下午 10:03:31

iphone Programming Glossary: affine

http://stackoverflow.com/questions/10533793/bezierpath-rotation-in-a-uiview

question Check this in Apple documentation. applyTransform Transforms all points in the path using the specified affine transform matrix. void applyTransform CGAffineTransform transform I haven't tried this. But here is how to rotate a NSBezierPath..

iPhone dev - Manually rotate view

http://stackoverflow.com/questions/1220580/iphone-dev-manually-rotate-view

get what you want in order for the view to appear where you want it. The way to approach this is just do the 90 degree affine transform rotation and see the effects it has on the view. This way you should be able to figure out where you layers anchor..

Flatten UIViews Subviews to UIImage iPhone 3.0

http://stackoverflow.com/questions/1424566/flatten-uiviews-subviews-to-uiimage-iphone-3-0

iPhone 3.0 I have a UIView that has several UIImageViews as subviews. Each of these subviews has had different affine transform applied. I would like to take what amounts to a screen capture of my UIView capturing it as a UIImage or some.. to a CGContext with view.layer renderInContext UIGraphicsGetCurrentContext doesn't preserve the positioning or other affine transformations of my subviews. I would really appreciate a kick in the right direction. iphone cocoa touch cgcontext ..

Get iPhone's camera resolution?

http://stackoverflow.com/questions/1638161/get-iphones-camera-resolution

1500x2000 but how do I obtain these values from inside my code without taking the picture . I need them to make some affine transform to the camera preview. I could detect if it's 3G or 3GS to hardcode these values but it's just the last resort...

resize all subview in scrollViewDidZoom

http://stackoverflow.com/questions/19856928/resize-all-subview-in-scrollviewdidzoom

this question When you are zooming in the scroll view the zoomView mainView in your case is not resized just an affine transformation applied on it's layer CALayer . For example in case of 1.2 zoomScale it is 1.2 0 0 1.2 0 0 . So it's bounds.. void scrollViewDidZoom UIScrollView scrollView in the delegate and print out the main view's frame bounds layer.affineTransform to see what happens on zooming. To make what you want you have to adjust the label according the zoomScale void..

iPhone image stretching (skew)

http://stackoverflow.com/questions/2351586/iphone-image-stretching-skew

in advance iphone image transform stretch share improve this question Not possible with CGAffineTransform. An affine transform can always be decomposed into translations rotations shearing and scaling. They all map parallelograms into parallelograms..

How do i rotate a CALayer around a diagonal line?

http://stackoverflow.com/questions/2394807/how-do-i-rotate-a-calayer-around-a-diagonal-line

nil iphone animation core animation calayer flip share improve this question you can fake it this way create an affine transform that collapse the layer along it's diagonal A B B A D C D C change the image and trasform the CALayer back..

How to animate while resizing UIView

http://stackoverflow.com/questions/4586297/how-to-animate-while-resizing-uiview

though. The important thing to understand here is the relationship between the bounds and center properties. All affine transforms translate scale or rotate need a reference point about which to perform the transform. In the case of a UIView..

Quartz 2D/OpenGLES geometric distortions on images (preferrably using CGImage)

http://stackoverflow.com/questions/459108/quartz-2d-opengles-geometric-distortions-on-images-preferrably-using-cgimage

source bitmap data but I'm not sure how to apply this bitmap data as a transformation on my CGImage. This isn't an affine transformation since lines are no longer parallel around the area of distortion etc. Is it possible using CGImage or would..

Using UIPinchGestureRecognizer to scale uiviews in single direction

http://stackoverflow.com/questions/6759028/using-uipinchgesturerecognizer-to-scale-uiviews-in-single-direction

non proportional scaling along the horizontal and vertical axis. In this case the thing comes down to providing your affine transform piece.transform CGAffineTransformScale piece transform hScale vScale with different scaling factors. One way to..

How do you shrink a UIPickerView on the iPhone?

http://stackoverflow.com/questions/905969/how-do-you-shrink-a-uipickerview-on-the-iphone

picker share improve this question Actually you can slightly shrink the whole UIPickerView by applying an affine transform to an enclosing view. For example CGSize pickerSize pickerView sizeThatFits CGSizeZero pickerTransformView UIView..