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46 lines
2.0 KiB
Mathematica
46 lines
2.0 KiB
Mathematica
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#import "TGRoundImage.h"
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UIImage *TGRoundImage(UIImage *sourceImage, CGSize size)
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{
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UIGraphicsBeginImageContextWithOptions(size, false, 0.0f);
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CGContextRef context = UIGraphicsGetCurrentContext();
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[sourceImage drawInRect:CGRectMake(0.0f, 0.0f, size.width, size.height) blendMode:kCGBlendModeCopy alpha:1.0f];
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CGContextSetBlendMode(context, kCGBlendModeCopy);
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CGContextSetFillColorWithColor(context, [UIColor clearColor].CGColor);
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CGContextBeginPath(context);
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CGContextMoveToPoint(context, 0.0f, size.height / 2.0f);
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CGContextAddArcToPoint(context, 0.0f, 0.0f, size.width / 2.0f, 0.0f, size.width / 2.0f);
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CGContextAddLineToPoint(context, 0.0f, 0.0f);
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CGContextAddLineToPoint(context, 0.0f, size.height / 2.0f);
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CGContextFillPath(context);
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CGContextBeginPath(context);
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CGContextMoveToPoint(context, size.width / 2.0f, 0.0f);
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CGContextAddArcToPoint(context, size.width, 0.0f, size.width, size.height / 2.0f, size.width / 2.0f);
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CGContextAddLineToPoint(context, size.width, 0.0f);
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CGContextAddLineToPoint(context, size.width / 2.0f, 0.0f);
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CGContextFillPath(context);
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CGContextBeginPath(context);
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CGContextMoveToPoint(context, size.width, size.height / 2.0f);
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CGContextAddArcToPoint(context, size.width, size.height, size.width / 2.0f, size.height, size.width / 2.0f);
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CGContextAddLineToPoint(context, size.width, size.height);
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CGContextAddLineToPoint(context, size.width, size.height / 2.0f);
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CGContextFillPath(context);
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CGContextBeginPath(context);
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CGContextMoveToPoint(context, size.width / 2.0f, size.height);
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CGContextAddArcToPoint(context, 0.0f, size.height, 0.0f, size.height / 2.0f, size.width / 2.0f);
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CGContextAddLineToPoint(context, 0.0f, size.height);
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CGContextAddLineToPoint(context, size.width / 2.0f, size.height);
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CGContextFillPath(context);
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UIImage *result = UIGraphicsGetImageFromCurrentImageContext();
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UIGraphicsEndImageContext();
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return result;
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}
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