2014/10/15 下午 10:08:28

iphone Programming Glossary: erasing

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

to Unerase the erased UIImage Hi Guys I am trying a Image erasing code in my PanGesture I am using code below UIImage image UIImage imageNamed @ 326d4fb72362a2e44659141cadfc4977.jpg holderView..

How to erase part of an image as the user touches it

http://stackoverflow.com/questions/2978382/how-to-erase-part-of-an-image-as-the-user-touches-it

through the docs as well as this site but can't find the solution. The following is just a proof of concept to test erasing an image based on where the user touches but it isn't working. I have a UIView that detects touches then sends the coords.. IplImage this is what you want UIImage erasePointinUIImage IplImage image CGPoint point int r r is the radious of the erasing int a point.x int b point.y int position int minX minY maxX maxY minX a r 0 a r 0 minY b r 0 b r 0 maxX a r image width..

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

to add manual erasing option in ipad painting application by quartz i am working on a painting application using Quartz 2D for ipad. now i want..

Erase using brush in GLPaint

http://stackoverflow.com/questions/4048811/erase-using-brush-in-glpaint

CGPoint start toPoint CGPoint end method so that I could check whether the stroke is for painting or erasing. For erasing I do not know how to make use of the start and end parameters for erasing. Is there any method call in OpenGL.. CGPoint start toPoint CGPoint end method so that I could check whether the stroke is for painting or erasing. For erasing I do not know how to make use of the start and end parameters for erasing. Is there any method call in OpenGL like glClear.. the stroke is for painting or erasing. For erasing I do not know how to make use of the start and end parameters for erasing. Is there any method call in OpenGL like glClear that accepts these two parameter and does erase Any pointer will be very..

How can I erase UIBezierPath lines drawn on a transparent view above an image?

http://stackoverflow.com/questions/7979937/how-can-i-erase-uibezierpath-lines-drawn-on-a-transparent-view-above-an-image

line when touch on screen it should show effects like eraser. If I has some fixed color like white background then for erasing line I can draw a line with background color but here I have transparent background of view so I cant do that. I tried with..

UIView: how to do non-destructive drawing?

http://stackoverflow.com/questions/865636/uiview-how-to-do-non-destructive-drawing

prevent your view from being automatically erased but you cannot depend on it . To draw on top of your view without erasing do your drawing to an off screen bitmap context which is never cleared by the system. Then in your drawRect copy from this..