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2014/10/15 ¤U¤È 10:13:30
iphone Programming Glossary: rotationHow to develop or migrate apps for iPhone 5 screen resolution? http://stackoverflow.com/questions/12395200/how-to-develop-or-migrate-apps-for-iphone-5-screen-resolution 568 code for 4 inch screen else code for 3.5 inch screen Also note The auto rotation API has changed completely take a look at that as well if your application supports any rotation other..
How to Rotate a UIImage 90 degrees? http://stackoverflow.com/questions/1315251/how-to-rotate-a-uiimage-90-degrees CGContextRelease bitmap CGImageRelease ref return newImage iphone uikit uiimage core graphics rotation share improve this question What about something like static inline double radians double degrees..
Is there a documented way to set the iPhone orientation? http://stackoverflow.com/questions/181780/is-there-a-documented-way-to-set-the-iphone-orientation a documented way to set the iPhone orientation I have an app where I would like to support device rotation in certain views but other don't particularly make sense in Landscape mode so as I swapping the views.. particularly make sense in Landscape mode so as I swapping the views out I would like to force the rotation to be set to portrait. There is an undocumented property setter on UIDevice that does the trick but..
http://stackoverflow.com/questions/2496554/easiest-way-to-support-multiple-orientations-how-do-i-load-a-custom-nib-when-th project directory. What I want to do is use a separate NIB myViewControllerLandscape.xib for my rotations. I try detecting rotation in viewDidLoad l ike this if self.interfaceOrientation UIInterfaceOrientationLandscapeLeft.. I want to do is use a separate NIB myViewControllerLandscape.xib for my rotations. I try detecting rotation in viewDidLoad l ike this if self.interfaceOrientation UIInterfaceOrientationLandscapeLeft self.interfaceOrientation..
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 Ben said you'll need to work with the UIView's layer using a CATransform3D to perform the layer's rotation. The trick to get perspective working as described here is to directly access one of the matrix cells.. 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.. the following UIView myView self subviews objectAtIndex 0 CALayer layer myView.layer CATransform3D rotationAndPerspectiveTransform CATransform3DIdentity rotationAndPerspectiveTransform.m34 1.0 500 rotationAndPerspectiveTransform..
Can I use CGAffineTransformMakeRotation to rotate a view more than 360 degrees? http://stackoverflow.com/questions/542739/can-i-use-cgaffinetransformmakerotation-to-rotate-a-view-more-than-360-degrees player setTransform swirl player setAlpha 0.0f But I find that if I try to change the angle of the rotation to say 4 M_PI it doesn't rotate at all. Is it possible to get a 720 rotation using CGAffineTransformRotate.. the angle of the rotation to say 4 M_PI it doesn't rotate at all. Is it possible to get a 720 rotation using CGAffineTransformRotate or do I have to switch to another technology If I have to switch to another.. You can rotate a view by some number of radians regardless of whether it is less than a full rotation or many multiples of a full rotation without having to split the rotation into pieces. As an example..
Store orientation to an array - and compare http://stackoverflow.com/questions/6368618/store-orientation-to-an-array-and-compare I guess not. It is far easier to compare the acceleration vectors than orientations Euler angles rotation matrices quaternions as tc pointed that out. If you are using acceleration data you have 3 dimensional..
Need to find Distance using Gyro+Accelerometer http://stackoverflow.com/questions/6647314/need-to-find-distance-using-gyroaccelerometer this but if you are measuring linear distances you can use the gyroscope reading to control that rotation of the device was not too large. If rotation was too strong make the user re do the measurement. share..
how to create iphone's wobbling icon effect? http://stackoverflow.com/questions/929364/how-to-create-iphones-wobbling-icon-effect simpler solution that I'm just missing. 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..
How to develop or migrate apps for iPhone 5 screen resolution? http://stackoverflow.com/questions/12395200/how-to-develop-or-migrate-apps-for-iphone-5-screen-resolution
How to Rotate a UIImage 90 degrees? http://stackoverflow.com/questions/1315251/how-to-rotate-a-uiimage-90-degrees bitmap UIImage newImage UIImage imageWithCGImage ref CGContextRelease bitmap CGImageRelease ref return newImage iphone uikit uiimage core graphics rotation share improve this question What about something like static inline double radians double degrees return degrees M_PI 180 UIImage rotate UIImage src UIImageOrientation..
Is there a documented way to set the iPhone orientation? http://stackoverflow.com/questions/181780/is-there-a-documented-way-to-set-the-iphone-orientation there a documented way to set the iPhone orientation I have an app where I would like to support device rotation in certain views but other don't particularly make sense in Landscape mode so as I swapping the views out I would like to force the rotation to be set to portrait... to support device rotation in certain views but other don't particularly make sense in Landscape mode so as I swapping the views out I would like to force the rotation to be set to portrait. There is an undocumented property setter on UIDevice that does the trick but obviously generates a compiler warning and could disappear with..
http://stackoverflow.com/questions/2496554/easiest-way-to-support-multiple-orientations-how-do-i-load-a-custom-nib-when-th Resources and myViewControllerLandscape.xib exists in the root project directory. What I want to do is use a separate NIB myViewControllerLandscape.xib for my rotations. I try detecting rotation in viewDidLoad l ike this if self.interfaceOrientation UIInterfaceOrientationLandscapeLeft self.interfaceOrientation UIInterfaceOrientationLandscapeRight.. exists in the root project directory. What I want to do is use a separate NIB myViewControllerLandscape.xib for my rotations. I try detecting rotation in viewDidLoad l ike this if self.interfaceOrientation UIInterfaceOrientationLandscapeLeft self.interfaceOrientation UIInterfaceOrientationLandscapeRight NSLog..
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 touch core animation share improve this question As Ben said you'll need to work with the UIView's layer using a CATransform3D to perform the layer's rotation. The trick to get perspective working as described here is to directly access one of the matrix cells of the CATransform3D m34 . Matrix math has never been my thing.. so I can't explain exactly why this works but it 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 CATransform3D rotationAndPerspectiveTransform.. rotation transforms to that. You should also be able to do the following UIView myView self subviews objectAtIndex 0 CALayer layer myView.layer CATransform3D rotationAndPerspectiveTransform CATransform3DIdentity rotationAndPerspectiveTransform.m34 1.0 500 rotationAndPerspectiveTransform CATransform3DRotate rotationAndPerspectiveTransform..
Can I use CGAffineTransformMakeRotation to rotate a view more than 360 degrees? http://stackoverflow.com/questions/542739/can-i-use-cgaffinetransformmakerotation-to-rotate-a-view-more-than-360-degrees 5.0f 5.0f swirl CGAffineTransformRotate scale M_PI player setTransform swirl player setAlpha 0.0f But I find that if I try to change the angle of the rotation to say 4 M_PI it doesn't rotate at all. Is it possible to get a 720 rotation using CGAffineTransformRotate or do I have to switch to another technology If I have.. swirl player setAlpha 0.0f But I find that if I try to change the angle of the rotation to say 4 M_PI it doesn't rotate at all. Is it possible to get a 720 rotation using CGAffineTransformRotate or do I have to switch to another technology If I have to switch to another technology would you recommend using another thread or.. core animation core graphics share improve this question You can rotate a view by some number of radians regardless of whether it is less than a full rotation or many multiples of a full rotation without having to split the rotation into pieces. As an example the following code will spin a view once per second for a specified..
Store orientation to an array - and compare http://stackoverflow.com/questions/6368618/store-orientation-to-an-array-and-compare tc's question does the orientation relative to North matter I guess not. It is far easier to compare the acceleration vectors than orientations Euler angles rotation matrices quaternions as tc pointed that out. If you are using acceleration data you have 3 dimensional vectors at each time point the x y z coordinates. I would..
Need to find Distance using Gyro+Accelerometer http://stackoverflow.com/questions/6647314/need-to-find-distance-using-gyroaccelerometer
how to create iphone's wobbling icon effect? http://stackoverflow.com/questions/929364/how-to-create-iphones-wobbling-icon-effect animation forKey keypath Or there could be a totally simpler solution that I'm just missing. 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..
How to develop or migrate apps for iPhone 5 screen resolution? http://stackoverflow.com/questions/12395200/how-to-develop-or-migrate-apps-for-iphone-5-screen-resolution bounds if screenBounds.size.height 568 code for 4 inch screen else code for 3.5 inch screen Also note The auto rotation API has changed completely take a look at that as well if your application supports any rotation other than default. share..
How to Rotate a UIImage 90 degrees? http://stackoverflow.com/questions/1315251/how-to-rotate-a-uiimage-90-degrees imageWithCGImage ref CGContextRelease bitmap CGImageRelease ref return newImage iphone uikit uiimage core graphics rotation share improve this question What about something like static inline double radians double degrees return degrees M_PI..
Is there a documented way to set the iPhone orientation? http://stackoverflow.com/questions/181780/is-there-a-documented-way-to-set-the-iphone-orientation there a documented way to set the iPhone orientation I have an app where I would like to support device rotation in certain views but other don't particularly make sense in Landscape mode so as I swapping the views out I would like to.. but other don't particularly make sense in Landscape mode so as I swapping the views out I would like to force the rotation to be set to portrait. There is an undocumented property setter on UIDevice that does the trick but obviously generates..
http://stackoverflow.com/questions/2496554/easiest-way-to-support-multiple-orientations-how-do-i-load-a-custom-nib-when-th exists in the root project directory. What I want to do is use a separate NIB myViewControllerLandscape.xib for my rotations. I try detecting rotation in viewDidLoad l ike this if self.interfaceOrientation UIInterfaceOrientationLandscapeLeft self.interfaceOrientation.. directory. What I want to do is use a separate NIB myViewControllerLandscape.xib for my rotations. I try detecting rotation in viewDidLoad l ike this if self.interfaceOrientation UIInterfaceOrientationLandscapeLeft self.interfaceOrientation UIInterfaceOrientationLandscapeRight..
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 this question As Ben said you'll need to work with the UIView's layer using a CATransform3D to perform the layer's rotation. The trick to get perspective working as described here is to directly access one of the matrix cells of the CATransform3D.. but it 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.. also be able to do the following UIView myView self subviews objectAtIndex 0 CALayer layer myView.layer CATransform3D rotationAndPerspectiveTransform CATransform3DIdentity rotationAndPerspectiveTransform.m34 1.0 500 rotationAndPerspectiveTransform..
Can I use CGAffineTransformMakeRotation to rotate a view more than 360 degrees? http://stackoverflow.com/questions/542739/can-i-use-cgaffinetransformmakerotation-to-rotate-a-view-more-than-360-degrees scale M_PI player setTransform swirl player setAlpha 0.0f But I find that if I try to change the angle of the rotation to say 4 M_PI it doesn't rotate at all. Is it possible to get a 720 rotation using CGAffineTransformRotate or do I have.. that if I try to change the angle of the rotation to say 4 M_PI it doesn't rotate at all. Is it possible to get a 720 rotation using CGAffineTransformRotate or do I have to switch to another technology If I have to switch to another technology would.. improve this question You can rotate a view by some number of radians regardless of whether it is less than a full rotation or many multiples of a full rotation without having to split the rotation into pieces. As an example the following code..
Store orientation to an array - and compare http://stackoverflow.com/questions/6368618/store-orientation-to-an-array-and-compare to North matter I guess not. It is far easier to compare the acceleration vectors than orientations Euler angles rotation matrices quaternions as tc pointed that out. If you are using acceleration data you have 3 dimensional vectors at each time..
Need to find Distance using Gyro+Accelerometer http://stackoverflow.com/questions/6647314/need-to-find-distance-using-gyroaccelerometer is not necessary for this but if you are measuring linear distances you can use the gyroscope reading to control that rotation of the device was not too large. If rotation was too strong make the user re do the measurement. share improve this answer..
how to create iphone's wobbling icon effect? http://stackoverflow.com/questions/929364/how-to-create-iphones-wobbling-icon-effect there could be a totally simpler solution that I'm just missing. 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..
Basic keyframe animation (rotation) http://stackoverflow.com/questions/1031177/basic-keyframe-animation-rotation __ANGLE__ __ANGLE__ 180.0 M_PI ... UIView beginAnimations nil context nil CGAffineTransform cgCTM CGAffineTransformMakeRotation DEGREES_TO_RADIANS desiredEndingAngle UIView setAnimationDuration 0.5 graphic.transform cgCTM UIView commitAnimations As.. As I understand it I ™m not looking for animation along a Path since that ™s for Translation rather than Rotation ... Anyway any help would be VERY much appreciated Thanks in advance. iphone core animation share improve this question.. 0.5f animation.cumulative YES animation.repeatCount 1 animation.values NSArray arrayWithObjects i.e. Rotation values for the 3 keyframes in RADIANS NSNumber numberWithFloat 0.0 M_PI NSNumber numberWithFloat 0.75 M_PI NSNumber numberWithFloat..
BezierPath Rotation in a UIView http://stackoverflow.com/questions/10533793/bezierpath-rotation-in-a-uiview Rotation in a UIView I am drawing a BezierPath on Touch event. Now I have to rotate that Bezier Path on the same location using.. path. angle is a value in radians if angle 0.0 return self else NSBezierPath copy self copy NSAffineTransform xfm RotationTransform angle cp copy transformUsingAffineTransform xfm return copy autorelease which uses NSAffineTransform RotationTransform.. RotationTransform angle cp copy transformUsingAffineTransform xfm return copy autorelease which uses NSAffineTransform RotationTransform const CGFloat angle const NSPoint cp return a transform that will cause a rotation about the point given at the..
Selective Autorotation within a UINavigationController and UITabBarController http://stackoverflow.com/questions/1196758/selective-autorotation-within-a-uinavigationcontroller-and-uitabbarcontroller subclasses as the root view controllers of the UINavigationControllers @implementation UITabBarController Rotation BOOL shouldAutorotateToInterfaceOrientation UIInterfaceOrientation interfaceOrientation if self.selectedViewController isKindOfClass..
CGAffineTransformInvert: singular matrix in UIImagePickerController with showsCameraControls = NO http://stackoverflow.com/questions/13708496/cgaffinetransforminvert-singular-matrix-in-uiimagepickercontroller-with-showsca this question I believe it to be largely benign as Apple's own PhotoPicker sample code generates this warning. Rotation has to do with matrices and while I'm not sure which matrix in particular is getting rotated it is considered a mathematical.. of zero similar to dividing by zero . Such a matrix is not invertible or 'singular' http en.wikipedia.org wiki Rotation_matrix http en.wikipedia.org wiki Determinant http en.wikipedia.org wiki Singular_matrix#singular share improve this answer..
Cropping an image in iOS using OpenCV face detection http://stackoverflow.com/questions/14756505/cropping-an-image-in-ios-using-opencv-face-detection and the image is not cropped well I found the issue for my above post thanks @Jameo to pointing me that its because of Rotation issue. I have Rotated the Image as below. UIImage rotateImage UIImage alloc initWithCGImage image.CGImage scale 1.0 orientation..
iOS7 / iOS6 Conditional Rotation Portrait / Landscape for different sections of App http://stackoverflow.com/questions/19041650/ios7-ios6-conditional-rotation-portrait-landscape-for-different-sections-of iOS6 Conditional Rotation Portrait Landscape for different sections of App Problem A have an App that uses both Landscape mode locked and Portrait..
Single-Stage vs Two-Stage Animation for iPhone Apps? http://stackoverflow.com/questions/2048781/single-stage-vs-two-stage-animation-for-iphone-apps this question Everything is explained in the UIViewController Class Reference . Especially check out the View Rotation section near the top. From the reference Handling View Rotations By default the UIViewController class displays views in.. Class Reference . Especially check out the View Rotation section near the top. From the reference Handling View Rotations By default the UIViewController class displays views in portrait mode only. To support additional orientations you must.. is generally recommended for any new code. To add animations for a one step orientation change override the willAnimateRotationToInterfaceOrientation duration method and perform your animations there. To use the older two step method override one or..
“Incorrect” frame / window size after re-orientation in iPhone http://stackoverflow.com/questions/2686882/incorrect-frame-window-size-after-re-orientation-in-iphone wrong I say wrong because at a first glance the values does not make sense to me . Here's the output of some logging Rotation Landscape w 300.000000 h 480.000000 Rotation Portrait w 320.000000 h 460.000000 The values for w and h in Landscape seem.. the values does not make sense to me . Here's the output of some logging Rotation Landscape w 300.000000 h 480.000000 Rotation Portrait w 320.000000 h 460.000000 The values for w and h in Landscape seem inverted to me I was expecting that w 480 and.. CGRect frame UIScreen mainScreen .applicationFrame CGSize size frame.size NSLog @ @ NSString stringWithFormat @ Rotation s w f h f UIInterfaceOrientationIsPortrait self.interfaceOrientation Portrait Landscape size.width size.height iphone..
iPhoneSDK calculate Rotation angle from CATransform3D http://stackoverflow.com/questions/3565383/iphonesdk-calculate-rotation-angle-from-catransform3d calculate Rotation angle from CATransform3D How do I calculate the Rotation in Radians around Z axis by giving a CATransform3D struct as the.. calculate Rotation angle from CATransform3D How do I calculate the Rotation in Radians around Z axis by giving a CATransform3D struct as the input basically what I need is the other way round of CATransform3DMakeRotation.. Z axis by giving a CATransform3D struct as the input basically what I need is the other way round of CATransform3DMakeRotation . iphone core animation catransform3d share improve this question It depends on what axis you are doing the rotation..
Dismiss popover using UIbutton http://stackoverflow.com/questions/3565968/dismiss-popover-using-uibutton void viewDidLoad super viewDidLoad IBAction cancelButton self.delegate didClickCancelButton #pragma mark #pragma mark Rotation support BOOL shouldAutorotateToInterfaceOrientation UIInterfaceOrientation interfaceOrientation Overriden to allow any orientation...
http://stackoverflow.com/questions/5014176/mpmoviewplayercontroller-fullscreen-playback-rotation-with-underlying-uiviewcont perfectly unless user switches to fullscreen playback where I want to allow rotation to allow landscape playback too. Rotation doesn't work because UITabBarController disallows it and both UIViewControllers too . So I tried two approaches but none.. two approaches but none of them does work as expected. 1 Subclassed UITabBarController I did add property BOOL __allowRotation and if it is set to YES I do return YES in UITabBarController's shouldAutorotateToInterfaceOrientation method. I'm listening..
Storyboards orientation support for xCode 4.2? http://stackoverflow.com/questions/7803524/storyboards-orientation-support-for-xcode-4-2 up the Apple Alternate View example . Basically it is serving up a modal view for the landscape view. #pragma mark Rotation view control void orientationChanged NSNotification notification We must add a delay here otherwise we'll swap in the new..
UIImage Rotation custom degrees http://stackoverflow.com/questions/917713/uiimage-rotation-custom-degrees Rotation custom degrees I have been using the code in this sample to assist and this works well. http www.platinumball.net blog..
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