iOS图像处理之画圆角矩形

CGContextRef ctx = UIGraphicsGetCurrentContext();

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    CGContextSaveGState(ctx);

    //画圆矩形

    //设置线宽

    CGContextSetLineWidth(ctx, BORDE_WIDTH);

    //设置填充颜色和画笔颜色

    CGContextSetFillColorWithColor(ctx, self.color.CGColor);

    CGContextSetStrokeColorWithColor(ctx, [UIColor yellowColor].CGColor);

    CGPathRef clippath = [UIBezierPath bezierPathWithRoundedRect:CGRectMake([self offsets].width,[self offsets].height, [self size].width, [self size].height) cornerRadius:CR_RADIUS].CGPath;

    CGContextAddPath(ctx, clippath);

//    //找到各个角点

//    CGPoint p_0_0 = CGPointMake([self offsets].width, [self offsets].height);

//    CGPoint p_0_1 = CGPointMake([self offsets].width + [self size].width, [self offsets].height);

//    CGPoint p_1_0 = CGPointMake([self offsets].width, [self offsets].height + [self size].height);

//    CGPoint p_1_1 = CGPointMake([self offsets].width + [self size].width, [self offsets].height + [self size].height);

//    CGContextMoveToPoint(ctx, p_1_0.x , p_1_0.y - CR_RADIUS * 2);

//    CGContextAddArcToPoint(ctx, p_0_0.x, p_0_0.y, p_0_0.x + CR_RADIUS*2, p_0_0.y, CR_RADIUS);

//    CGContextAddArcToPoint(ctx, p_0_1.x, p_0_1.y, p_0_1.x, p_0_1.y  + CR_RADIUS*2, CR_RADIUS);

//    CGContextAddArcToPoint(ctx, p_1_1.x, p_1_1.y, p_1_1.x - CR_RADIUS*2, p_1_1.y, CR_RADIUS);

//    CGContextAddArcToPoint(ctx, p_1_0.x, p_1_0.y, p_1_0.x, p_1_0.y - CR_RADIUS*2, CR_RADIUS);

    CGContextClosePath(ctx);

    CGContextDrawPath(ctx, kCGPathFillStroke);