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2014/10/15 ¤U¤È 10:10:55

iphone Programming Glossary: lastpoint

How to erase finger paint on Custom UIView in iPhone

http://stackoverflow.com/questions/11132546/how-to-erase-finger-paint-on-custom-uiview-in-iphone

I am getting Error Invalid context Below is my class .h file @interface draw2D UIView CGPoint previousPoint CGPoint lastPoint CGMutablePathRef path UIButton btnClose UIButton btnErase BOOL IsErase IBAction btnClose id sender IBAction btnErase id.. NSLog @ Touch Began d touch tapCount if touch tapCount 1 NSLog @ Paint Start path CGPathCreateMutable previousPoint lastPoint self setNeedsDisplay self.backgroundColor UIColor clearColor void touchesMoved NSSet touches withEvent UIEvent event NSLog.. self.backgroundColor UIColor clearColor void touchesMoved NSSet touches withEvent UIEvent event NSLog @ touchesMoved lastPoint touches anyObject locationInView self previousPoint touches anyObject previousLocationInView self if IsErase NSLog @ erase..

How to Unerase the erased UIImage

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

here void move id sender CGPoint currentPoint if UIPanGestureRecognizer sender state UIGestureRecognizerStateBegan lastPoint sender locationInView imgForeground lastPoint.y 20 else currentPoint sender locationInView imgForeground currentPoint.y.. if UIPanGestureRecognizer sender state UIGestureRecognizerStateBegan lastPoint sender locationInView imgForeground lastPoint.y 20 else currentPoint sender locationInView imgForeground currentPoint.y 20 UIGraphicsBeginImageContext imgForeground.frame.size.. UIGraphicsGetCurrentContext kCGBlendModeClear CGContextBeginPath context CGContextMoveToPoint context lastPoint.x lastPoint.y CGContextAddLineToPoint context lastPoint.x lastPoint.y CGContextStrokePath context imgForeground.image UIGraphicsGetImageFromCurrentImageContext..

Lag while drawing in ios7

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

withEvent UIEvent event if isImageSelection mouseSwiped NO UITouch touch touches anyObject if touch view baseview lastPoint2 touch locationInView self.viewDrawing2 void touchesMoved NSSet touches withEvent UIEvent event if isImageSelection NSLog.. kCGBlendModeClear CGContextBeginPath UIGraphicsGetCurrentContext CGContextMoveToPoint UIGraphicsGetCurrentContext lastPoint.x lastPoint.y CGContextAddLineToPoint UIGraphicsGetCurrentContext currentPoint.x currentPoint.y CGContextStrokePath UIGraphicsGetCurrentContext.. CGContextBeginPath UIGraphicsGetCurrentContext CGContextMoveToPoint UIGraphicsGetCurrentContext lastPoint.x lastPoint.y CGContextAddLineToPoint UIGraphicsGetCurrentContext currentPoint.x currentPoint.y CGContextStrokePath UIGraphicsGetCurrentContext..

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

question yes this is work well in my app firstly you add this code in touch began UITouch touch touches anyObject lastPoint touch locationInView imgview UIGraphicsBeginImageContext imgview.frame.size imgview.image drawInRect CGRectMake 0 0 imgview.frame.size.width.. CGPoint currentPoint touch locationInView imgview NSLog @ asdasdas CGContextMoveToPoint UIGraphicsGetCurrentContext lastPoint.x lastPoint.y CGContextAddLineToPoint UIGraphicsGetCurrentContext currentPoint.x currentPoint.y CGContextStrokePath UIGraphicsGetCurrentContext.. touch locationInView imgview NSLog @ asdasdas CGContextMoveToPoint UIGraphicsGetCurrentContext lastPoint.x lastPoint.y CGContextAddLineToPoint UIGraphicsGetCurrentContext currentPoint.x currentPoint.y CGContextStrokePath UIGraphicsGetCurrentContext..

iPhone signature capture

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

. I hope this helps. SignatureViewController.h IBOutlet UIImageView signatureImageView Signature Drawing Items CGPoint lastPoint BOOL mouseSwiped int mouseMoved SignatureCaptureViewController.m void touchesBegan NSSet touches withEvent UIEvent event.. UITouch touch touches anyObject Clear Signature on Double Tap if touch tapCount 2 signatureImageView.image nil return lastPoint touch locationInView signatureImageView void touchesMoved NSSet touches withEvent UIEvent event mouseSwiped YES UITouch.. 0.0 0.0 0.0 1.0 CGContextBeginPath UIGraphicsGetCurrentContext CGContextMoveToPoint UIGraphicsGetCurrentContext lastPoint.x lastPoint.y CGContextAddLineToPoint UIGraphicsGetCurrentContext currentPoint.x currentPoint.y CGContextStrokePath UIGraphicsGetCurrentContext..

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

typedef enum _DrawingMode DrawingModePen 0 DrawingModeEraser 1 DrawingMode @interface DrawingView UIView CGPoint lastPoint UIImageView drawImage BOOL mouseSwiped int mouseMoved DrawingMode mode UIColor _drawingPenColor @property nonatomic retain.. withEvent UIEvent event mouseSwiped NO UITouch touch touches anyObject if touch tapCount 2 drawImage.image nil return lastPoint touch locationInView self lastPoint.y 20 NSLog @ touches begin void touchesMoved NSSet touches withEvent UIEvent event mouseSwiped.. NO UITouch touch touches anyObject if touch tapCount 2 drawImage.image nil return lastPoint touch locationInView self lastPoint.y 20 NSLog @ touches begin void touchesMoved NSSet touches withEvent UIEvent event mouseSwiped YES UITouch touch touches..

draw a line in UIImageView problem

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

class 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.. 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 drawInRect.. a straight line segment from the current point to the provided point CGContextAddLineToPoint ctx currentPoint.x lastPoint.y paints a line along the current path CGContextStrokePath ctx drawImage.image UIGraphicsGetImageFromCurrentImageContext..

Filling a portion of an image with color

http://stackoverflow.com/questions/8124308/filling-a-portion-of-an-image-with-color

NSString stringWithFormat @ roof i index tempColor UIColor alloc initWithPatternImage UIImage imageNamed imageName lastPoint touch locationInView self.view lastPoint.y 20 NSString tx NSString alloc initWithFormat @ .0f lastPoint.x NSString ty NSString.. tempColor UIColor alloc initWithPatternImage UIImage imageNamed imageName lastPoint touch locationInView self.view lastPoint.y 20 NSString tx NSString alloc initWithFormat @ .0f lastPoint.x NSString ty NSString alloc initWithFormat @ .0f lastPoint.y.. imageName lastPoint touch locationInView self.view lastPoint.y 20 NSString tx NSString alloc initWithFormat @ .0f lastPoint.x NSString ty NSString alloc initWithFormat @ .0f lastPoint.y NSLog @ the vale of the string is @ and @ tx ty int ix tx..

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

2 drawImage setImage UIImage imageWithContentsOfFile NSBundle mainBundle pathForResource @ white ofType @ png return lastPoint touch locationInView self.view lastPoint.y 20 void touchesMoved NSSet touches withEvent UIEvent event mouseSwiped YES UITouch.. NSBundle mainBundle pathForResource @ white ofType @ png return lastPoint touch locationInView self.view lastPoint.y 20 void touchesMoved NSSet touches withEvent UIEvent event mouseSwiped YES UITouch touch touches anyObject CGPoint currentPoint.. 0.0 0.5 0.6 1.0 CGContextBeginPath UIGraphicsGetCurrentContext CGContextMoveToPoint UIGraphicsGetCurrentContext lastPoint.x lastPoint.y CGContextAddLineToPoint UIGraphicsGetCurrentContext currentPoint.x currentPoint.y CGContextStrokePath UIGraphicsGetCurrentContext..

draw line between two points in iphone?

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

UIGraphicsGetCurrentContext 1.0 0.0 0.0 1.0 CGContextMoveToPoint UIGraphicsGetCurrentContext lastPoint.x lastPoint.y CGContextAddLineToPoint UIGraphicsGetCurrentContext lastPoint.x lastPoint.y CGContextStrokePath UIGraphicsGetCurrentContext.. UIGraphicsGetCurrentContext 1.0 0.0 0.0 1.0 CGContextMoveToPoint UIGraphicsGetCurrentContext lastPoint.x lastPoint.y CGContextAddLineToPoint UIGraphicsGetCurrentContext lastPoint.x lastPoint.y CGContextStrokePath UIGraphicsGetCurrentContext.. UIGraphicsGetCurrentContext lastPoint.x lastPoint.y CGContextAddLineToPoint UIGraphicsGetCurrentContext lastPoint.x lastPoint.y CGContextStrokePath UIGraphicsGetCurrentContext CGContextFlush UIGraphicsGetCurrentContext imageView.image..