iphone Programming Glossary: cgaffinetransform
Any quick and dirty anti-aliasing techniques for a rotated UIImageView? http://stackoverflow.com/questions/1136110/any-quick-and-dirty-anti-aliasing-techniques-for-a-rotated-uiimageview a rotated UIImageView I've got a UIImageView full frame and rectangular that i'm rotating with a CGAffineTransform. The UIImage of the UIImageView fills the entire frame. When the image is rotated and drawn the edges..
How to Rotate a UIImage 90 degrees? http://stackoverflow.com/questions/1315251/how-to-rotate-a-uiimage-90-degrees that I would like to rotate counter clockwise by 90 degrees to landscape . I don't want to use a CGAffineTransform. I want the pixels of the UIImage to actually shift position. I am using a block of code shown below..
Changing my CALayer's anchorPoint moves the view http://stackoverflow.com/questions/1968017/changing-my-calayers-anchorpoint-moves-the-view
iPhone image stretching (skew) http://stackoverflow.com/questions/2351586/iphone-image-stretching-skew way since it's only a change the perspective of view rotate bring closer farther one side . Maybe CGAffineTransform can be useful If you know the answer please write a sample code. Thanks in advance iphone image transform.. 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..
How do I export UIImage array as a movie? http://stackoverflow.com/questions/3741323/how-do-i-export-uiimage-array-as-a-movie
Fast and Lean PDF Viewer for iPhone / iPad / iOs - tips and hints? http://stackoverflow.com/questions/3889634/fast-and-lean-pdf-viewer-for-iphone-ipad-ios-tips-and-hints appropriate CTM. The code in void drawLayer CALayer layer inContext CGContextRef context is like CGAffineTransform currentCTM CGContextGetCTM context if currentCTM.a 1.0 baseImage Calculate ideal scale CGFloat scaleForWidth..
Get PDF hyperlinks on iOS with Quartz http://stackoverflow.com/questions/4080373/get-pdf-hyperlinks-on-ios-with-quartz pageRect.size.height temp rect.size.width rect.origin.x rect.size.height rect.origin.y CGAffineTransform trans CGAffineTransformIdentity trans CGAffineTransformTranslate trans 0 pageRect.size.height trans.. temp rect.size.width rect.origin.x rect.size.height rect.origin.y CGAffineTransform trans CGAffineTransformIdentity trans CGAffineTransformTranslate trans 0 pageRect.size.height trans CGAffineTransformScale trans.. rect.size.height rect.origin.y CGAffineTransform trans CGAffineTransformIdentity trans CGAffineTransformTranslate trans 0 pageRect.size.height trans CGAffineTransformScale trans 1.0 1.0 rect CGRectApplyAffineTransform..
How do I reset after a UIScrollView zoom? http://stackoverflow.com/questions/448285/how-do-i-reset-after-a-uiscrollview-zoom at the new scale factor. Generally it's suggested that you reset the transform on your view to be CGAffineTransformIdentity and then have your view manually redraw itself at the new size scale. However this causes a.. subclass for my content view with the following methods defined void setTransformWithoutScaling CGAffineTransform newTransform super setTransform newTransform void setTransform CGAffineTransform newValue super setTransform.. CGAffineTransform newTransform super setTransform newTransform void setTransform CGAffineTransform newValue super setTransform CGAffineTransformScale newValue 1.0f previousScale 1.0f previousScale where..
UIImagePickerController camera preview is portrait in landscape app http://stackoverflow.com/questions/538041/uiimagepickercontroller-camera-preview-is-portrait-in-landscape-app imgRef image.CGImage CGFloat width CGImageGetWidth imgRef CGFloat height CGImageGetHeight imgRef CGAffineTransform transform CGAffineTransformIdentity CGRect bounds CGRectMake 0 0 width height if width kMaxResolution.. width CGImageGetWidth imgRef CGFloat height CGImageGetHeight imgRef CGAffineTransform transform CGAffineTransformIdentity CGRect bounds CGRectMake 0 0 width height if width kMaxResolution height kMaxResolution CGFloat.. orient image.imageOrientation switch orient case UIImageOrientationUp EXIF 1 transform CGAffineTransformIdentity break case UIImageOrientationUpMirrored EXIF 2 transform CGAffineTransformMakeTranslation imageSize.width..
iOS UIImagePickerController result image orientation after upload http://stackoverflow.com/questions/5427656/ios-uiimagepickercontroller-result-image-orientation-after-upload make the image upright. We do it in 2 steps Rotate if Left Right Down and then flip if Mirrored. CGAffineTransform transform CGAffineTransformIdentity switch self.imageOrientation case UIImageOrientationDown case UIImageOrientationDownMirrored.. do it in 2 steps Rotate if Left Right Down and then flip if Mirrored. CGAffineTransform transform CGAffineTransformIdentity switch self.imageOrientation case UIImageOrientationDown case UIImageOrientationDownMirrored.. self.imageOrientation case UIImageOrientationDown case UIImageOrientationDownMirrored transform CGAffineTransformTranslate transform self.size.width self.size.height transform CGAffineTransformRotate transform M_PI..
how to create iphone's wobbling icon effect? http://stackoverflow.com/questions/929364/how-to-create-iphones-wobbling-icon-effect share improve this question Simple way to do it #define RADIANS degrees degrees M_PI 180.0 CGAffineTransform leftWobble CGAffineTransformRotate CGAffineTransformIdentity RADIANS 5.0 CGAffineTransform rightWobble.. Simple way to do it #define RADIANS degrees degrees M_PI 180.0 CGAffineTransform leftWobble CGAffineTransformRotate CGAffineTransformIdentity RADIANS 5.0 CGAffineTransform rightWobble CGAffineTransformRotate CGAffineTransformIdentity.. it #define RADIANS degrees degrees M_PI 180.0 CGAffineTransform leftWobble CGAffineTransformRotate CGAffineTransformIdentity RADIANS 5.0 CGAffineTransform rightWobble CGAffineTransformRotate CGAffineTransformIdentity..
Any quick and dirty anti-aliasing techniques for a rotated UIImageView? http://stackoverflow.com/questions/1136110/any-quick-and-dirty-anti-aliasing-techniques-for-a-rotated-uiimageview quick and dirty anti aliasing techniques for a rotated UIImageView I've got a UIImageView full frame and rectangular that i'm rotating with a CGAffineTransform. The UIImage of the UIImageView fills the entire frame. When the image is rotated and drawn the edges appear noticeably jagged. Is there anything I can do to make..
How to Rotate a UIImage 90 degrees? http://stackoverflow.com/questions/1315251/how-to-rotate-a-uiimage-90-degrees I have a UIImage that is UIImageOrientationUp portrait that I would like to rotate counter clockwise by 90 degrees to landscape . I don't want to use a CGAffineTransform. I want the pixels of the UIImage to actually shift position. I am using a block of code shown below originally intended to resize a UIImage to do this. I set a..
Changing my CALayer's anchorPoint moves the view http://stackoverflow.com/questions/1968017/changing-my-calayers-anchorpoint-moves-the-view
iPhone image stretching (skew) http://stackoverflow.com/questions/2351586/iphone-image-stretching-skew CATransform3D but it seems that this cannot be done in such way since it's only a change the perspective of view rotate bring closer farther one side . Maybe CGAffineTransform can be useful If you know the answer please write a sample code. Thanks in advance iphone image transform stretch share improve this question Not possible.. useful If you know the answer please write a sample code. Thanks 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 which your transform..
How do I export UIImage array as a movie? http://stackoverflow.com/questions/3741323/how-do-i-export-uiimage-array-as-a-movie
Fast and Lean PDF Viewer for iPhone / iPad / iOs - tips and hints? http://stackoverflow.com/questions/3889634/fast-and-lean-pdf-viewer-for-iphone-ipad-ios-tips-and-hints start zooming I acquire the CGPDFPage and render it using the appropriate CTM. The code in void drawLayer CALayer layer inContext CGContextRef context is like CGAffineTransform currentCTM CGContextGetCTM context if currentCTM.a 1.0 baseImage Calculate ideal scale CGFloat scaleForWidth baseImage.size.width self.bounds.size.width CGFloat..
Get PDF hyperlinks on iOS with Quartz http://stackoverflow.com/questions/4080373/get-pdf-hyperlinks-on-ios-with-quartz temp pageRect.size.width pageRect.size.width pageRect.size.height pageRect.size.height temp rect.size.width rect.origin.x rect.size.height rect.origin.y CGAffineTransform trans CGAffineTransformIdentity trans CGAffineTransformTranslate trans 0 pageRect.size.height trans CGAffineTransformScale trans 1.0 1.0 rect CGRectApplyAffineTransform.. pageRect.size.width pageRect.size.height pageRect.size.height temp rect.size.width rect.origin.x rect.size.height rect.origin.y CGAffineTransform trans CGAffineTransformIdentity trans CGAffineTransformTranslate trans 0 pageRect.size.height trans CGAffineTransformScale trans 1.0 1.0 rect CGRectApplyAffineTransform rect trans do whatever.. pageRect.size.height temp rect.size.width rect.origin.x rect.size.height rect.origin.y CGAffineTransform trans CGAffineTransformIdentity trans CGAffineTransformTranslate trans 0 pageRect.size.height trans CGAffineTransformScale trans 1.0 1.0 rect CGRectApplyAffineTransform rect trans do whatever you need with the coordinates...
How do I reset after a UIScrollView zoom? http://stackoverflow.com/questions/448285/how-do-i-reset-after-a-uiscrollview-zoom a chance to do a more high quality rendering of your view at the new scale factor. Generally it's suggested that you reset the transform on your view to be CGAffineTransformIdentity and then have your view manually redraw itself at the new size scale. However this causes a problem because UIScrollView doesn't appear to monitor the content.. which is what you're seeing. As a workaround I use a UIView subclass for my content view with the following methods defined void setTransformWithoutScaling CGAffineTransform newTransform super setTransform newTransform void setTransform CGAffineTransform newValue super setTransform CGAffineTransformScale newValue 1.0f previousScale.. view with the following methods defined void setTransformWithoutScaling CGAffineTransform newTransform super setTransform newTransform void setTransform CGAffineTransform newValue super setTransform CGAffineTransformScale newValue 1.0f previousScale 1.0f previousScale where previousScale is a float instance variable of the view...
UIImagePickerController camera preview is portrait in landscape app http://stackoverflow.com/questions/538041/uiimagepickercontroller-camera-preview-is-portrait-in-landscape-app UIImage image int kMaxResolution 640 Or whatever CGImageRef imgRef image.CGImage CGFloat width CGImageGetWidth imgRef CGFloat height CGImageGetHeight imgRef CGAffineTransform transform CGAffineTransformIdentity CGRect bounds CGRectMake 0 0 width height if width kMaxResolution height kMaxResolution CGFloat ratio width height if ratio.. 640 Or whatever CGImageRef imgRef image.CGImage CGFloat width CGImageGetWidth imgRef CGFloat height CGImageGetHeight imgRef CGAffineTransform transform CGAffineTransformIdentity CGRect bounds CGRectMake 0 0 width height if width kMaxResolution height kMaxResolution CGFloat ratio width height if ratio 1 bounds.size.width kMaxResolution.. imgRef CGImageGetHeight imgRef CGFloat boundHeight UIImageOrientation orient image.imageOrientation switch orient case UIImageOrientationUp EXIF 1 transform CGAffineTransformIdentity break case UIImageOrientationUpMirrored EXIF 2 transform CGAffineTransformMakeTranslation imageSize.width 0.0 transform CGAffineTransformScale transform..
iOS UIImagePickerController result image orientation after upload http://stackoverflow.com/questions/5427656/ios-uiimagepickercontroller-result-image-orientation-after-upload return self We need to calculate the proper transformation to make the image upright. We do it in 2 steps Rotate if Left Right Down and then flip if Mirrored. CGAffineTransform transform CGAffineTransformIdentity switch self.imageOrientation case UIImageOrientationDown case UIImageOrientationDownMirrored transform CGAffineTransformTranslate.. the proper transformation to make the image upright. We do it in 2 steps Rotate if Left Right Down and then flip if Mirrored. CGAffineTransform transform CGAffineTransformIdentity switch self.imageOrientation case UIImageOrientationDown case UIImageOrientationDownMirrored transform CGAffineTransformTranslate transform self.size.width.. CGAffineTransform transform CGAffineTransformIdentity switch self.imageOrientation case UIImageOrientationDown case UIImageOrientationDownMirrored transform CGAffineTransformTranslate transform self.size.width self.size.height transform CGAffineTransformRotate transform M_PI break case UIImageOrientationLeft case UIImageOrientationLeftMirrored..
how to create iphone's wobbling icon effect? http://stackoverflow.com/questions/929364/how-to-create-iphones-wobbling-icon-effect Appreciate any pointers. Thanks iphone ios animation rotation share improve this question Simple way to do it #define RADIANS degrees degrees M_PI 180.0 CGAffineTransform leftWobble CGAffineTransformRotate CGAffineTransformIdentity RADIANS 5.0 CGAffineTransform rightWobble CGAffineTransformRotate CGAffineTransformIdentity RADIANS.. iphone ios animation rotation share improve this question Simple way to do it #define RADIANS degrees degrees M_PI 180.0 CGAffineTransform leftWobble CGAffineTransformRotate CGAffineTransformIdentity RADIANS 5.0 CGAffineTransform rightWobble CGAffineTransformRotate CGAffineTransformIdentity RADIANS 5.0 itemView.transform leftWobble.. rotation share improve this question Simple way to do it #define RADIANS degrees degrees M_PI 180.0 CGAffineTransform leftWobble CGAffineTransformRotate CGAffineTransformIdentity RADIANS 5.0 CGAffineTransform rightWobble CGAffineTransformRotate CGAffineTransformIdentity RADIANS 5.0 itemView.transform leftWobble starting point UIView..
Any quick and dirty anti-aliasing techniques for a rotated UIImageView? http://stackoverflow.com/questions/1136110/any-quick-and-dirty-anti-aliasing-techniques-for-a-rotated-uiimageview techniques for a rotated UIImageView I've got a UIImageView full frame and rectangular that i'm rotating with a CGAffineTransform. The UIImage of the UIImageView fills the entire frame. When the image is rotated and drawn the edges appear noticeably..
How to Rotate a UIImage 90 degrees? http://stackoverflow.com/questions/1315251/how-to-rotate-a-uiimage-90-degrees portrait that I would like to rotate counter clockwise by 90 degrees to landscape . I don't want to use a CGAffineTransform. I want the pixels of the UIImage to actually shift position. I am using a block of code shown below originally intended..
CGImage/UIImage lazily loading on UI thread causes stutter http://stackoverflow.com/questions/1815476/cgimage-uiimage-lazily-loading-on-ui-thread-causes-stutter CGImageGetWidth imgRef CGFloat currentHeight CGImageGetHeight imgRef CGRect bounds CGRectMake 0.0f 0.0f 1.0f 1.0f CGAffineTransform transform CGAffineTransformIdentity CGFloat scaleRatioX bounds.size.width currentWidth CGFloat scaleRatioY bounds.size.height.. CGFloat currentHeight CGImageGetHeight imgRef CGRect bounds CGRectMake 0.0f 0.0f 1.0f 1.0f CGAffineTransform transform CGAffineTransformIdentity CGFloat scaleRatioX bounds.size.width currentWidth CGFloat scaleRatioY bounds.size.height currentHeight UIGraphicsBeginImageContext..
Changing my CALayer's anchorPoint moves the view http://stackoverflow.com/questions/1968017/changing-my-calayers-anchorpoint-moves-the-view
iPhone image stretching (skew) http://stackoverflow.com/questions/2351586/iphone-image-stretching-skew be done in such way since it's only a change the perspective of view rotate bring closer farther one side . Maybe CGAffineTransform can be useful If you know the answer please write a sample code. Thanks in advance iphone image transform stretch share.. a sample code. Thanks 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..
How to change an UILabel/UIFont's letter spacing? http://stackoverflow.com/questions/2544905/how-to-change-an-uilabel-uifonts-letter-spacing context kCGTextFill CGContextSetRGBFillColor context 221 255.0 221 255.0 221 255.0 221 255.0 CGAffineTransform xform CGAffineTransformMake 1.0 0.0 0.0 1.0 0.0 0.0 CGContextSetTextMatrix context xform char result malloc 17 sprintf result.. context kCGTextFill CGContextSetRGBFillColor context 221 255.0 221 255.0 221 255.0 221 255.0 CGAffineTransform xform CGAffineTransformMake 1.0 0.0 0.0 1.0 0.0 0.0 CGContextSetTextMatrix context xform char result malloc 17 sprintf result d totalNumber CGContextShowTextAtPoint.. CGContextSetCharacterSpacing context 1 CGContextSetFillColorWithColor context UIColor clearColor CGColor CGAffineTransform myTextTransform CGAffineTransformScale CGAffineTransformIdentity 1.f 1.f CGContextSetTextMatrix context myTextTransform..
How do I export UIImage array as a movie? http://stackoverflow.com/questions/3741323/how-do-i-export-uiimage-array-as-a-movie
UITextField in UIAlertView on iPhone - how to make it responsive? http://stackoverflow.com/questions/376104/uitextfield-in-uialertview-on-iphone-how-to-make-it-responsive CGRectMake 20.0 45.0 245.0 25.0 nameField setBackgroundColor UIColor whiteColor dialog addSubview nameField CGAffineTransform moveUp CGAffineTransformMakeTranslation 0.0 100.0 dialog setTransform moveUp dialog show I also have the following code.. 45.0 245.0 25.0 nameField setBackgroundColor UIColor whiteColor dialog addSubview nameField CGAffineTransform moveUp CGAffineTransformMakeTranslation 0.0 100.0 dialog setTransform moveUp dialog show I also have the following code to deal with the alert view..
Fast and Lean PDF Viewer for iPhone / iPad / iOs - tips and hints? http://stackoverflow.com/questions/3889634/fast-and-lean-pdf-viewer-for-iphone-ipad-ios-tips-and-hints render it using the appropriate CTM. The code in void drawLayer CALayer layer inContext CGContextRef context is like CGAffineTransform currentCTM CGContextGetCTM context if currentCTM.a 1.0 baseImage Calculate ideal scale CGFloat scaleForWidth baseImage.size.width..
Get PDF hyperlinks on iOS with Quartz http://stackoverflow.com/questions/4080373/get-pdf-hyperlinks-on-ios-with-quartz pageRect.size.height pageRect.size.height temp rect.size.width rect.origin.x rect.size.height rect.origin.y CGAffineTransform trans CGAffineTransformIdentity trans CGAffineTransformTranslate trans 0 pageRect.size.height trans CGAffineTransformScale.. pageRect.size.height temp rect.size.width rect.origin.x rect.size.height rect.origin.y CGAffineTransform trans CGAffineTransformIdentity trans CGAffineTransformTranslate trans 0 pageRect.size.height trans CGAffineTransformScale trans 1.0 1.0 rect CGRectApplyAffineTransform.. rect.size.width rect.origin.x rect.size.height rect.origin.y CGAffineTransform trans CGAffineTransformIdentity trans CGAffineTransformTranslate trans 0 pageRect.size.height trans CGAffineTransformScale trans 1.0 1.0 rect CGRectApplyAffineTransform rect trans..
How do I reset after a UIScrollView zoom? http://stackoverflow.com/questions/448285/how-do-i-reset-after-a-uiscrollview-zoom of your view at the new scale factor. Generally it's suggested that you reset the transform on your view to be CGAffineTransformIdentity and then have your view manually redraw itself at the new size scale. However this causes a problem because UIScrollView.. I use a UIView subclass for my content view with the following methods defined void setTransformWithoutScaling CGAffineTransform newTransform super setTransform newTransform void setTransform CGAffineTransform newValue super setTransform CGAffineTransformScale.. void setTransformWithoutScaling CGAffineTransform newTransform super setTransform newTransform void setTransform CGAffineTransform newValue super setTransform CGAffineTransformScale newValue 1.0f previousScale 1.0f previousScale where previousScale is..
how to detect (iphone sdk) if a video file was recorded in portrait orientation, or landscape http://stackoverflow.com/questions/4627940/how-to-detect-iphone-sdk-if-a-video-file-was-recorded-in-portrait-orientation initWithURL url options nil CGSize size avAsset naturalSize NSLog @ size.width f size.height f size.width size.height CGAffineTransform txf avAsset preferredTransform NSLog @ txf.a f txf.b f txf.c f txf.d f txf.tx f txf.ty f txf.a txf.b txf.c txf.d txf.tx.. objectAtIndex 0 CGSize size videoTrack naturalSize NSLog @ size.width f size.height f size.width size.height CGAffineTransform txf videoTrack preferredTransform NSLog @ txf.a f txf.b f txf.c f txf.d f txf.tx f txf.ty f txf.a txf.b txf.c txf.d txf.tx..
UIImagePickerController camera preview is portrait in landscape app http://stackoverflow.com/questions/538041/uiimagepickercontroller-camera-preview-is-portrait-in-landscape-app whatever CGImageRef imgRef image.CGImage CGFloat width CGImageGetWidth imgRef CGFloat height CGImageGetHeight imgRef CGAffineTransform transform CGAffineTransformIdentity CGRect bounds CGRectMake 0 0 width height if width kMaxResolution height kMaxResolution.. image.CGImage CGFloat width CGImageGetWidth imgRef CGFloat height CGImageGetHeight imgRef CGAffineTransform transform CGAffineTransformIdentity CGRect bounds CGRectMake 0 0 width height if width kMaxResolution height kMaxResolution CGFloat ratio width height.. boundHeight UIImageOrientation orient image.imageOrientation switch orient case UIImageOrientationUp EXIF 1 transform CGAffineTransformIdentity break case UIImageOrientationUpMirrored EXIF 2 transform CGAffineTransformMakeTranslation imageSize.width 0.0 transform..
iOS UIImagePickerController result image orientation after upload http://stackoverflow.com/questions/5427656/ios-uiimagepickercontroller-result-image-orientation-after-upload transformation to make the image upright. We do it in 2 steps Rotate if Left Right Down and then flip if Mirrored. CGAffineTransform transform CGAffineTransformIdentity switch self.imageOrientation case UIImageOrientationDown case UIImageOrientationDownMirrored.. image upright. We do it in 2 steps Rotate if Left Right Down and then flip if Mirrored. CGAffineTransform transform CGAffineTransformIdentity switch self.imageOrientation case UIImageOrientationDown case UIImageOrientationDownMirrored transform CGAffineTransformTranslate.. switch self.imageOrientation case UIImageOrientationDown case UIImageOrientationDownMirrored transform CGAffineTransformTranslate transform self.size.width self.size.height transform CGAffineTransformRotate transform M_PI break case UIImageOrientationLeft..
how to create iphone's wobbling icon effect? http://stackoverflow.com/questions/929364/how-to-create-iphones-wobbling-icon-effect ios animation rotation share improve this question Simple way to do it #define RADIANS degrees degrees M_PI 180.0 CGAffineTransform leftWobble CGAffineTransformRotate CGAffineTransformIdentity RADIANS 5.0 CGAffineTransform rightWobble CGAffineTransformRotate.. improve this question Simple way to do it #define RADIANS degrees degrees M_PI 180.0 CGAffineTransform leftWobble CGAffineTransformRotate CGAffineTransformIdentity RADIANS 5.0 CGAffineTransform rightWobble CGAffineTransformRotate CGAffineTransformIdentity.. Simple way to do it #define RADIANS degrees degrees M_PI 180.0 CGAffineTransform leftWobble CGAffineTransformRotate CGAffineTransformIdentity RADIANS 5.0 CGAffineTransform rightWobble CGAffineTransformRotate CGAffineTransformIdentity RADIANS 5.0 itemView.transform..
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