2014/10/15 下午 10:05:49

iphone Programming Glossary: currentpoint

http://stackoverflow.com/questions/14053563/how-to-unerase-the-erased-uiimage

panRecognizer self.view addSubview holderView Then I am handling this here void move id sender CGPoint currentPoint if UIPanGestureRecognizer sender state UIGestureRecognizerStateBegan lastPoint sender locationInView imgForeground lastPoint.y.. sender state UIGestureRecognizerStateBegan lastPoint sender locationInView imgForeground lastPoint.y 20 else currentPoint sender locationInView imgForeground currentPoint.y 20 UIGraphicsBeginImageContext imgForeground.frame.size imgForeground.image.. lastPoint sender locationInView imgForeground lastPoint.y 20 else currentPoint sender locationInView imgForeground currentPoint.y 20 UIGraphicsBeginImageContext imgForeground.frame.size imgForeground.image drawInRect CGRectMake imgForeground.frame.origin.x..

Blur an image of specific part (rectangular, circular)?

http://stackoverflow.com/questions/14107979/blur-an-image-of-specific-part-rectangular-circular

void touchesMoved NSSet touches withEvent UIEvent event UIImage croppedImg nil UITouch touch touches anyObject CGPoint currentPoint touch locationInView self.imageView double ratioW imageView.image.size.width imageView.frame.size.width double ratioH imageView.image.size.height.. imageView.frame.size.width double ratioH imageView.image.size.height imageView.frame.size.height currentPoint.x ratioW currentPoint.y ratioH double circleSizeW 30 ratioW double circleSizeH 30 ratioH currentPoint.x currentPoint.x circleSizeW.. imageView.frame.size.width double ratioH imageView.image.size.height imageView.frame.size.height currentPoint.x ratioW currentPoint.y ratioH double circleSizeW 30 ratioW double circleSizeH 30 ratioH currentPoint.x currentPoint.x circleSizeW 2 0 0 currentPoint.x..

Lag while drawing in ios7

http://stackoverflow.com/questions/19108185/lag-while-drawing-in-ios7

anyObject if touch view btnInkColor touch view btnPenSize touch view baseview if touch view baseview CGPoint currentPoint touch locationInView self.viewDrawing if isEraser NSUserDefaults standardUserDefaults floatForKey @ strokeValue UIGraphicsBeginImageContext.. UIGraphicsGetCurrentContext lastPoint.x lastPoint.y CGContextAddLineToPoint UIGraphicsGetCurrentContext currentPoint.x currentPoint.y CGContextStrokePath UIGraphicsGetCurrentContext imgDrawing.image UIGraphicsGetImageFromCurrentImageContext.. lastPoint.x lastPoint.y CGContextAddLineToPoint UIGraphicsGetCurrentContext currentPoint.x currentPoint.y CGContextStrokePath UIGraphicsGetCurrentContext imgDrawing.image UIGraphicsGetImageFromCurrentImageContext UIGraphicsEndImageContext..

Use a CoreGraphic Stroke as Alpha Mask in iPhone App

http://stackoverflow.com/questions/2208579/use-a-coregraphic-stroke-as-alpha-mask-in-iphone-app

so far void touchesMoved NSSet touches withEvent UIEvent event mouseSwiped YES UITouch touch touches anyObject CGPoint currentPoint touch locationInView self.view UIGraphicsBeginImageContext self.view.frame.size CGRect rect CGRectMake 0 0 self.view.frame.size.width.. 1.0 CGContextBeginPath context CGContextMoveToPoint context lastPoint.x lastPoint.y CGContextAddLineToPoint context currentPoint.x currentPoint.y CGContextStrokePath context drawImage.image UIGraphicsGetImageFromCurrentImageContext iphone core graphics.. context CGContextMoveToPoint context lastPoint.x lastPoint.y CGContextAddLineToPoint context currentPoint.x currentPoint.y CGContextStrokePath context drawImage.image UIGraphicsGetImageFromCurrentImageContext iphone core graphics mask share..

Implementing touch-based rotation in cocoa touch

http://stackoverflow.com/questions/2780536/implementing-touch-based-rotation-in-cocoa-touch

e.g. something like void touchesBegan NSSet touches withEvent UIEvent event UITouch touch touches anyObject CGPoint currentPoint touch locationInView self current position of touch if touch view self Utility getDistance currentPoint toPoint self.middle.. CGPoint currentPoint touch locationInView self current position of touch if touch view self Utility getDistance currentPoint toPoint self.middle ROTATE_RADIUS middle is centre of view Utility getDistance currentPoint toPoint self.middle MOVE_RADIUS.. self Utility getDistance currentPoint toPoint self.middle ROTATE_RADIUS middle is centre of view Utility getDistance currentPoint toPoint self.middle MOVE_RADIUS will be rotation gesture remember state of view at beginning of touch CGPoint top CGPointMake..

want to add manual erasing option in ipad painting application by quartz

http://stackoverflow.com/questions/3863931/want-to-add-manual-erasing-option-in-ipad-painting-application-by-quartz

then on move touch you simple write the line stroke code that code is this UITouch touch touches anyObject CGPoint currentPoint touch locationInView imgview NSLog @ asdasdas CGContextMoveToPoint UIGraphicsGetCurrentContext lastPoint.x lastPoint.y CGContextAddLineToPoint.. UIGraphicsGetCurrentContext lastPoint.x lastPoint.y CGContextAddLineToPoint UIGraphicsGetCurrentContext currentPoint.x currentPoint.y CGContextStrokePath UIGraphicsGetCurrentContext imgview.image UIGraphicsGetImageFromCurrentImageContext.. UIGraphicsGetCurrentContext lastPoint.x lastPoint.y CGContextAddLineToPoint UIGraphicsGetCurrentContext currentPoint.x currentPoint.y CGContextStrokePath UIGraphicsGetCurrentContext imgview.image UIGraphicsGetImageFromCurrentImageContext lastPoint currentPoint..

iPhone signature capture

http://stackoverflow.com/questions/4132877/iphone-signature-capture

void touchesMoved NSSet touches withEvent UIEvent event mouseSwiped YES UITouch touch touches anyObject CGPoint currentPoint touch locationInView signatureImageView UIGraphicsBeginImageContext signatureImageView.frame.size signatureImageView.image.. UIGraphicsGetCurrentContext lastPoint.x lastPoint.y CGContextAddLineToPoint UIGraphicsGetCurrentContext currentPoint.x currentPoint.y CGContextStrokePath UIGraphicsGetCurrentContext signatureImageView.image UIGraphicsGetImageFromCurrentImageContext.. UIGraphicsGetCurrentContext lastPoint.x lastPoint.y CGContextAddLineToPoint UIGraphicsGetCurrentContext currentPoint.x currentPoint.y CGContextStrokePath UIGraphicsGetCurrentContext signatureImageView.image UIGraphicsGetImageFromCurrentImageContext UIGraphicsEndImageContext..

Is there an SDK to draw lines on iOS with touch?

http://stackoverflow.com/questions/6774352/is-there-an-sdk-to-draw-lines-on-ios-with-touch

begin void touchesMoved NSSet touches withEvent UIEvent event mouseSwiped YES UITouch touch touches anyObject CGPoint currentPoint touch locationInView self currentPoint.y 20 UIGraphicsBeginImageContext self.bounds.size drawImage.image drawInRect CGRectMake.. withEvent UIEvent event mouseSwiped YES UITouch touch touches anyObject CGPoint currentPoint touch locationInView self currentPoint.y 20 UIGraphicsBeginImageContext self.bounds.size drawImage.image drawInRect CGRectMake 0 0 self.bounds.size.width self.bounds.size.height.. UIGraphicsGetCurrentContext lastPoint.x lastPoint.y CGContextAddLineToPoint UIGraphicsGetCurrentContext currentPoint.x currentPoint.y CGContextStrokePath UIGraphicsGetCurrentContext drawImage.image UIGraphicsGetImageFromCurrentImageContext..

draw a line in UIImageView problem

http://stackoverflow.com/questions/680855/draw-a-line-in-uiimageview-problem

in correct way please help i have scratch my head all the days and cannot find out the problem void drawLine lastPoint currentPoint lastPoint.y 40 drawImage is a UIImageView declared at header UIGraphicsBeginImageContext drawImage.frame.size drawImage.image.. path in a graphics context CGContextBeginPath ctx begin a new path at the point you specify CGContextMoveToPoint ctx currentPoint.x currentPoint.y Appends a straight line segment from the current point to the provided point CGContextAddLineToPoint ctx.. context CGContextBeginPath ctx begin a new path at the point you specify CGContextMoveToPoint ctx currentPoint.x currentPoint.y Appends a straight line segment from the current point to the provided point CGContextAddLineToPoint ctx currentPoint.x..

how to create an application which allows user to free hand drawing? [closed]

http://stackoverflow.com/questions/8207913/how-to-create-an-application-which-allows-user-to-free-hand-drawing

20 void touchesMoved NSSet touches withEvent UIEvent event mouseSwiped YES UITouch touch touches anyObject CGPoint currentPoint touch locationInView self.drawImage currentPoint.y 20 NSLog @ current Point is x d y d currentPoint.x currentPoint.y UIGraphicsBeginImageContext.. UIEvent event mouseSwiped YES UITouch touch touches anyObject CGPoint currentPoint touch locationInView self.drawImage currentPoint.y 20 NSLog @ current Point is x d y d currentPoint.x currentPoint.y UIGraphicsBeginImageContext self.drawImage.frame.size.. anyObject CGPoint currentPoint touch locationInView self.drawImage currentPoint.y 20 NSLog @ current Point is x d y d currentPoint.x currentPoint.y UIGraphicsBeginImageContext self.drawImage.frame.size drawImage.image drawInRect CGRectMake 0 0 self.drawImage.frame.size.width..

draw line between two points in iphone?

http://stackoverflow.com/questions/8208469/draw-line-between-two-points-in-iphone