iPhone剪切技艺

iPhone剪切技巧

iPhone中的剪切技巧:
1.获取图形上下文
2.构造剪切的路径(形状)

3.构建剪切区域?
4.贴上你的画

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// 1CGContextRef context = UIGraphicsGetCurrentContext();// 2CGRect bounds = CGRectMake(0.0f, 0.0f, SIDELENGTH, SIDELENGTH);CGMutablePathRef path = CGPathCreateMutable();CGPathAddEllipseInRect(path, NULL, bounds);// 3CGContextAddPath(context, path);CGContextClip(context);// 4[LOGO drawInRect:bounds];