iphone Programming Glossary: transforms
Drawing rotated text with NSString drawInRect http://stackoverflow.com/questions/10289898/drawing-rotated-text-with-nsstring-drawinrect So I thought I could do that by using M_PI 2 for 90 degrees. I do not see my text though. I have tried different transforms for the rotation and only some seem to work like M_PI 4 and M_PI 8. I would think that if I used M_PI 4 it would have the..
Applying multiple transforms to a UIView / CALayer http://stackoverflow.com/questions/1111277/applying-multiple-transforms-to-a-uiview-calayer multiple transforms to a UIView CALayer Is there any problem applying multiple transforms to a UIView and it's corresponding CALayer Specifically.. multiple transforms to a UIView CALayer Is there any problem applying multiple transforms to a UIView and it's corresponding CALayer Specifically can you mix and match CATransform3Ds with CGAffineTransforms without.. match CATransform3Ds with CGAffineTransforms without running into issues Also are there any problems with setting some transforms directly while animating another transform change simultaneously Are there any rules for how this should be done or any..
How do I create/render a UIImage from a 3D transformed UIImageView? http://stackoverflow.com/questions/1949003/how-do-i-create-render-a-uiimage-from-a-3d-transformed-uiimageview UIImage image UIImage imageWithCGImage newImageRef FAIL docs for renderInContext states that it does not render 3D transforms UIGraphicsBeginImageContext imageView.image.size imageView.layer renderInContext UIGraphicsGetCurrentContext UIImage image..
iPhone OpenGL ES - How to Pick http://stackoverflow.com/questions/2540447/iphone-opengl-es-how-to-pick of View Touch coordinates into my opengl world and grid cell. Are there any helpers to do the reverse of last few transforms which I do for navigation or I should calculate and do the matrix stuff by hand iphone opengl es matrix touch share improve..
Horizontal UITableView http://stackoverflow.com/questions/2870680/horizontal-uitableview I have published sample code that demonstrates one approach for implementing horizontally scrolling table views using transforms. It's called EasyTableView and provides the same interface for both vertically and horizontally scrolling table views. ..
How To Rotate An MPMoviePlayerController http://stackoverflow.com/questions/3019200/how-to-rotate-an-mpmovieplayercontroller to add the view controller to the VC hierarchy but it's pretty simple and a lot easier than messing around with view transforms MPMoviePlayerViewController vc MyMovieViewController alloc initWithContentURL aUrl self presentMoviePlayerViewControllerAnimated..
Using the apple FFT and accelerate Framework http://stackoverflow.com/questions/3398753/using-the-apple-fft-and-accelerate-framework just create one set for the highest resolution you're going to need and use it for everything. Now the actual transforms making use of the stuff we just precalculated vDSP_fft_zrip setupReal A stride log2n FFT_FORWARD At this point A will be..
UIImageView Gestures (Zoom, Rotate) Question http://stackoverflow.com/questions/3448614/uiimageview-gestures-zoom-rotate-question class otherGestureRecognizer isKindOfClass UILongPressGestureRecognizer class return NO return YES Scale and rotation transforms are applied relative to the layer's anchor point this method moves a gesture recognizer's view's anchor point between the..
How do I apply a perspective transform to a UIView? http://stackoverflow.com/questions/347721/how-do-i-apply-a-perspective-transform-to-a-uiview does. You'll need to set this value to a negative fraction for your initial transform then apply your layer rotation transforms to that. You should also be able to do the following UIView myView self subviews objectAtIndex 0 CALayer layer myView.layer..
Could not load nib in bundle on iPhone device http://stackoverflow.com/questions/4155292/could-not-load-nib-in-bundle-on-iphone-device
How do I reset after a UIScrollView zoom? http://stackoverflow.com/questions/448285/how-do-i-reset-after-a-uiscrollview-zoom view at new scale here contentView.previousScale scale scrollView.contentSize contentView.frame.size By doing this the transforms sent to the content view are adjusted based on the scale at which the view was last redrawn. When the pinch zooming is done..
Custom transition between two UIViews http://stackoverflow.com/questions/5511514/custom-transition-between-two-uiviews flip the entire screen instead of starting the flip with A's frame and ending with B's frame. I know I can do 3D like transforms to the view's layers but I'm not sure which set of animation APIs I should use to accomplish this. One thing I tried is..
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 I warn you the CGAffineTransforms are sometimes applied late so you'll see a or two of the original before the video transforms. I have no clue why this happens...a different combination of videos will yield the expected result but sometimes its off...
How to capture current view screenshot and reuse in code? (iPhone SDK) http://stackoverflow.com/questions/879064/how-to-capture-current-view-screenshot-and-reuse-in-code-iphone-sdk if you will of the user view before rotation. Then after the rotation is completed and the system has applied the view transforms etc I can show the snapshot view I saved and animate a transition of my choice to my new view. After it is completed I can.. of is to return NO on all orientations other than my default one and then react by applying my own animations and transforms. I'd prefer to use the system to do this however as I feel it is likely doing it myself could cause undefined keyboard behavior..
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