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2014/10/15 ¤U¤È 10:12:53
iphone Programming Glossary: previouslocationinviewHow to erase finger paint on Custom UIView in iPhone http://stackoverflow.com/questions/11132546/how-to-erase-finger-paint-on-custom-uiview-in-iphone UIEvent event NSLog @ touchesMoved lastPoint touches anyObject locationInView self previousPoint touches anyObject previousLocationInView self if IsErase NSLog @ erase UITouch erasetouch touches anyObject CGPoint erasecurrentPoint erasetouch locationInView..
How to rotate and resize the image view with single finger http://stackoverflow.com/questions/12566791/how-to-rotate-and-resize-the-image-view-with-single-finger UIEvent event CGPoint touchPoint touches anyObject locationInView imageView CGPoint previous touches anyObject previousLocationInView imageView UITouch touch event allTouches anyObject float deltaWidth touchPoint.x previous.x float deltaHeight touchPoint.y..
Finding the direction of scrolling in a UIScrollView? http://stackoverflow.com/questions/2543670/finding-the-direction-of-scrolling-in-a-uiscrollview touches withEvent event UITouch touch touches anyObject float now touch locationInView self .x float before touch previousLocationInView self .x NSLog @ f f before now if now before right NO NSLog @ LEFT else right YES NSLog @ RIGHT But this method sometimes..
Implementing touch-based rotation in cocoa touch http://stackoverflow.com/questions/2780536/implementing-touch-based-rotation-in-cocoa-touch
http://stackoverflow.com/questions/3956202/ipad-very-simple-drawing removeAllObjects if tempArray count 1 arrayOfTouches removeAllObjects CGPoint point1 tempArray objectAtIndex 0 previousLocationInView self.view CGPoint point2 CGPoint point3 for int i 0 i tempArray count 1 i i 1 UIGraphicsBeginImageContext self.view.frame.size..
I want To track The Speed Of the fingure movement in pixel Per Second Is It Possible Any WaY? http://stackoverflow.com/questions/5075291/i-want-to-track-the-speed-of-the-fingure-movement-in-pixel-per-second-is-it-poss alloc init now release touch touchesArray objectAtIndex 0 ptTouch touch locationInView self.view ptPrevious touch previousLocationInView self.view CGFloat xMove ptTouch.x ptPrevious.x CGFloat yMove ptTouch.y ptPrevious.y CGFloat distance sqrt xMove xMove yMove..
Applying Zoom Effect In cocos2D gaming environment? http://stackoverflow.com/questions/5919180/applying-zoom-effect-in-cocos2d-gaming-environment touchOne view CGPoint touchLocationTwo touchTwo locationInView touchTwo view CGPoint previousLocationOne touchOne previousLocationInView touchOne view CGPoint previousLocationTwo touchTwo previousLocationInView touchTwo view Get the distance for the current.. view CGPoint previousLocationOne touchOne previousLocationInView touchOne view CGPoint previousLocationTwo touchTwo previousLocationInView touchTwo view Get the distance for the current and previous touches. CGFloat currentDistance sqrt pow touchLocationOne.x..
Rotate a Sprite on a bezier path with touch - Cocos2D/Box2D http://stackoverflow.com/questions/7494795/rotate-a-sprite-on-a-bezier-path-with-touch-cocos2d-box2d I even incorporate it UITouch touch touches anyObject acquire the previous touch location CGPoint firstLocation touch previousLocationInView touch view CGPoint location touch locationInView touch view preform all the same basic rig on both the current touch and..
http://stackoverflow.com/questions/8302593/iphone-open-in-in-sdk
http://stackoverflow.com/questions/8690964/touch-and-pull-down-a-view knows they are touching the view. In the touchesMoved use touches anyObject locationInView self and touches anyObject previousLocationInView self to calculate the difference between the current touch position and the last touch position detect drag down or drag..
iPhone: Tracking/Identifying individual touches http://stackoverflow.com/questions/913086/iphone-tracking-identifying-individual-touches timestamp touch timestamp CGPoint currentLocation touch locationInView self CGPoint previousLocation touch previousLocationInView self if touch phase UITouchPhaseBegan Finger finger finger.start.x currentLocation.x finger.start.y currentLocation.y finger.end..
Save OpenGL Drawn item as a Image http://stackoverflow.com/questions/9660723/save-opengl-drawn-item-as-a-image touch point from UIView referential to OpenGL one upside down flip if firstTouch firstTouch NO previousLocation touch previousLocationInView self previousLocation.y bounds.size.height previousLocation.y else location touch locationInView self location.y bounds.size.height.. else location touch locationInView self location.y bounds.size.height location.y previousLocation touch previousLocationInView self previousLocation.y bounds.size.height previousLocation.y Render the stroke self renderLineFromPoint previousLocation.. self bounds UITouch touch event touchesForView self anyObject if firstTouch firstTouch NO previousLocation touch previousLocationInView self previousLocation.y bounds.size.height previousLocation.y self renderLineFromPoint previousLocation toPoint location..
Record the drawing as a m4v video file - OpenGL http://stackoverflow.com/questions/9661259/record-the-drawing-as-a-m4v-video-file-opengl touch point from UIView referential to OpenGL one upside down flip if firstTouch firstTouch NO previousLocation touch previousLocationInView self previousLocation.y bounds.size.height previousLocation.y else location touch locationInView self location.y bounds.size.height.. else location touch locationInView self location.y bounds.size.height location.y previousLocation touch previousLocationInView self previousLocation.y bounds.size.height previousLocation.y Render the stroke self renderLineFromPoint previousLocation.. self bounds UITouch touch event touchesForView self anyObject if firstTouch firstTouch NO previousLocation touch previousLocationInView self previousLocation.y bounds.size.height previousLocation.y self renderLineFromPoint previousLocation toPoint location..
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