I开发者_如何学C have a CGBitmapContext (bitmapContext) and I would like to draw some rectangle part (rect) of it to the current CGContext (context).
I\'m very new to Objective-C and Cocoa but I\'ve made a simple app which uses ImageKit to present a slideshow using the IKSlideShow class. However I\'ve got a bit stuck with something I thought would
For some reason I get linker errors when I try and use CALayer: \"_OBJC_CLASS_$_CALayer\", referenced from:
I\'m creating an iphone application. I have this UIView whose content is clipped with a path. I want to add shading and/or shadow to it. What\'s the best way to do this? For 开发者_JS百科shadow, I tri
I have a task - draw smooth curve input: set of points (they added in realtime) current solution: I use each 4 points to draw qubic Bezier curve (1 - strart, 2 and 3rd - control points, 4- end). End
filling a path with a solid color is easy enough: CGPoint aPoint; for (id pointValue in points) { aPoint = [pointValue CGPointValue];
me and my friend develop iPad application (a lot of CoreGraphics stuff). But we can\'t find an agreement. I tell him that testing on device is essential, he tells me that testing on iPhone 3G/3GS will
I\'m using Quartz CGEventTap in an attempt to globally intercept capslock presses and block them (to have them do something useful instead). I succesfully detect capslock presses but have so far been
I have recently asked about autoreleasing a returned quartz o开发者_开发百科bject: Autorelease for CGMutablePathRef?
Any suggestions on how to perform erase operat开发者_JAVA技巧ions in Quartz 2D?CGContextClearRect(UIGraphicsGetCurrentContext(), rect);
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