refered我会想从6点,而不是3时拿捏
//Create the path
CGContextAddArc(ctx, self.frame.size.width/2, self.frame.size.height/2, radius, 0, M_PI *2, 0);
//Set the stroke color to black
[[UIColor colorWithRed:241.0/255.0 green:90.0/255.0 blue:36.0/255.0 alpha:1.0]setStroke];
//Define line width and cap
CGContextSetLineWidth(ctx, TB_BACKGROUND_WIDTH);
CGContextSetLineCap(ctx, kCGLineCapButt);
//draw it!
//CGContextDrawPath(ctx, kCGPathFill);
CGContextDrawPath(ctx, kCGPathStroke);
目前
需要像从6点代替3-点到。
该图
对不起@DavidRönnqvist,我是新的核心图形和数学白痴。 – Desmond 2013-04-25 08:55:08