2014/10/15 下午 10:15:03

iphone Programming Glossary: toward

Where can I find an explanation of all transform matrix fields?

http://stackoverflow.com/questions/1260741/where-can-i-find-an-explanation-of-all-transform-matrix-fields

example if you multiply a point by this matrix 1 0 0 0 0 1 0 0 0 0 1 0 1 2 3 1 Then it will translate that point by 1 toward X 2 units toward Y and 3 toward Z. 1 0 0 0 x y z 1 x 0 1 0 0 x 1 y 2 z 3 1 0 0 1 0 1 2 3 1 Note that the point must be.. a point by this matrix 1 0 0 0 0 1 0 0 0 0 1 0 1 2 3 1 Then it will translate that point by 1 toward X 2 units toward Y and 3 toward Z. 1 0 0 0 x y z 1 x 0 1 0 0 x 1 y 2 z 3 1 0 0 1 0 1 2 3 1 Note that the point must be represented as.. by this matrix 1 0 0 0 0 1 0 0 0 0 1 0 1 2 3 1 Then it will translate that point by 1 toward X 2 units toward Y and 3 toward Z. 1 0 0 0 x y z 1 x 0 1 0 0 x 1 y 2 z 3 1 0 0 1 0 1 2 3 1 Note that the point must be represented as a 4 vector with..

Drag UIView around Shape Comprised of CGMutablePaths

http://stackoverflow.com/questions/13664615/drag-uiview-around-shape-comprised-of-cgmutablepaths

break Otherwise we need to update the desired location based on the drag and then slide the handle along the path toward the new desired location case UIGestureRecognizerStateChanged case UIGestureRecognizerStateEnded case UIGestureRecognizerStateCancelled.. of the gesture recognizer recognizer setTranslation CGPointZero inView self.view So how do we move the handle toward a point We want to slide it along the path. First we have to figure out which direction to slide it void moveHandleTowardPoint..

Designing the iPhone interface in a nib or in code?

http://stackoverflow.com/questions/1816964/designing-the-iphone-interface-in-a-nib-or-in-code

iPhone SDK. While there are still certainly some annoying IB bugs I've done a nearly complete 180 with my attitude toward using Interface Builder. More often than not it is a good idea to use Interface Builder in your projects I've found. It..

CLLocationManager and degrees of heading in iPhone

http://stackoverflow.com/questions/2043685/cllocationmanager-and-degrees-of-heading-in-iphone

nonatomic CLLocationDirection trueHeading Discussion The value in this property represents the heading that points toward the geographic North Pole. The value in this property is always reported relative to the top of the device regardless of..

How to detect iPhone movement in space using accelerometer?

http://stackoverflow.com/questions/2674717/how-to-detect-iphone-movement-in-space-using-accelerometer

My first try is to apply a low pass filter on the X and Y parameters from the accelerometer and to make a pointer move toward these values proportionally to the size of the screen. But this is clearly not enought I have a very low accuracy and if.. than the other. This means for example if I draw circles with my device i will see the ball describing curves towards the top left corner of the screen. Something like that http img685.imageshack.us i capturedcran20100422133.png Do you have..

Detecting Acceleration in a car (iPhone Accelerometer)

http://stackoverflow.com/questions/2733249/detecting-acceleration-in-a-car-iphone-accelerometer

The next run was to add the condition that the iPhone must be oriented in such a way that the screen was facing toward the back of the car. Using this method I attempted to follow only force on the z axis but this obviously lead to problems..

iPhone apps: Webapps or native?

http://stackoverflow.com/questions/2842230/iphone-apps-webapps-or-native

Preventing an <input> element from scrolling the screen on iPhone?

http://stackoverflow.com/questions/2952782/preventing-an-input-element-from-scrolling-the-screen-on-iphone

of the screen and de centering everything. The inputs are offset from the left of the screen and they begin somewhere toward the middle of the page. How can I prevent this scrolling on focus javascript iphone web applications safari jqtouch share..

UIView shake animation

http://stackoverflow.com/questions/3844557/uiview-shake-animation

animation share improve this question I wrote that post. It's overkill for a UIView plus the parameters are geared toward an OSX app. Do this instead. CABasicAnimation animation CABasicAnimation animationWithKeyPath @ position animation setDuration..

Turn a page like a Book with UIView?

http://stackoverflow.com/questions/477078/turn-a-page-like-a-book-with-uiview

like you are turning a page in a book. The UIViewAnimationTransitionCurlUp is pretty close if I could get it to curl toward the Left or Right. Is this possible I have tried to use the CATRansition but none of the animation types come close to a.. come close to a page turning. Any suggestions on how to create this page animation transition that would turn a page toward the left or right iphone share improve this question Edit June 2012 It is now possible to use the native Apple implementation..

Choose OpenGL ES 1.1 or OpenGL ES 2.0?

http://stackoverflow.com/questions/4784137/choose-opengl-es-1-1-or-opengl-es-2-0

more effort than OpenGL ES 1.1. Also most sample applications and writeups that you find out there will be geared toward 1.1 so it can be more difficult to get started with the 2.0 API. However the fact that you can write your own routines for..

iphone - core motion range of yaw, pitch and roll

http://stackoverflow.com/questions/5004548/iphone-core-motion-range-of-yaw-pitch-and-roll

be negative if the device's display is tilting upward away from gravity and positive if the display is facing down toward gravity Note that the algorithms used by CMDeviceMotion are pretty good at separating gravity from user acceleration but..

Can you use cancel/isCancelled with GCD/dispatch_async?

http://stackoverflow.com/questions/5449469/can-you-use-cancel-iscancelled-with-gcd-dispatch-async

release them before returning. Since all that cleanup needs to happen at every check you may want to consider moving toward a single return point. One way to do this would be to wrap each of your method calls in a if pleaseAbandonYourEfforts NO..

Best way to stream MP3 from an iPhone app?

http://stackoverflow.com/questions/893263/best-way-to-stream-mp3-from-an-iphone-app

best way to do this Is there something already built in that I could use like a MP3 player that I just need to point toward the correct server Do I need a streaming server to do so iphone objective c audio streaming share improve this question..