Is it possible to take a path draw in an UIView with CGPath and export it a开发者_Go百科s a PNG? Assuming you want a UIImage, not a png file, you can do something like this:
i have a question about the CGLayerRef \"elements\" ( because they are not object !) In my app, i want to store a list of CGLayerRef created from bitmaps, for obtain a good framerate on my DrawRect.
I have a method for drawing an object offscreen to a file, using quartz. The last lines of this method are:
Here\'s my code: #import <ApplicationServices/ApplicationServices.h> CGEventRef myCGEventCallback(CGEventTapProxy proxy, CGEventType type,CGEventRef event, void *refcon) {
I have a method that returns a CGMutablePathRef, something like this: - (CGMutablePathRef)somePath; { CGMutablePathRef theLine = CGPat开发者_如何学PythonhCreateMutable();
I\'m just starting writing some Core Animation code and I\'ve just spent a frustrating day trying to figure out a particular problem.
I two concentric circles on the screen and I want the circle on the inside to move around while the user drags their finger around the outside of the larger circle. This means that I have two point, c
I\'m creating an application where I will be drawing two circles onto the screen, one large circle with a smaller circle inside. I want the user to be able to touch/drag on the screen inside or outsid
I\'ve got a collection of roughly 10 overlapping UIImageViews. Each one is rectang开发者_StackOverflowular but each is rotated and scaled separately. Are there any Core Graphics tricks for drawing a p
I\'ve been plugging away at this for a few hours now, and haven\'t found a good answer. In Leopard, I can programmatically change the screen resolution using Quartz Display Services with CGConfigureDi
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