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POiOS: Inverse UIBezierPath (bezierPathWithOvalInRect)
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copied!<p>I have an jpg Image with a round object in a rect and want to make the envoirement of the round object transparent...</p> <p><img src="https://i.stack.imgur.com/nA2ZT.jpg" alt="Example"></p> <p>(Remove red area in this example)</p> <p>With the help of this <a href="https://stackoverflow.com/questions/8305285/ios-make-part-of-an-uiimage-transparent">iOS make part of an UIImage transparent</a> and "UIBezierPath bezierPathWithOvalInRect" i've got a little success, but this make a path around my object, and I need to invert it, to make the outside and not the inside of the path transparent..</p> <p>Im not shure where I have to change my code to get the right result..</p> <p>Here is my code:</p> <pre><code>//BezierPath UIBezierPath *bezierPath = [UIBezierPath bezierPathWithOvalInRect:CGRectMake(0, 0, 100, 100)]; // Create an image context containing the original UIImage. UIGraphicsBeginImageContext(_imgTemp.image.size); [_imgTemp.image drawAtPoint:CGPointZero]; // Clip to the bezier path and clear that portion of the image. CGContextRef context = UIGraphicsGetCurrentContext(); CGContextAddPath(context,bezierPath.CGPath); CGContextClip(context); CGContextClearRect(context,CGRectMake(0,0,self._imgTemp.image.size.width,self._imgTemp.image.size.height)); // Build a new UIImage from the image context. UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); self._imgTemp.image = newImage; </code></pre> <p>Anybody got the resolving?</p>

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