UIBezierPath的使用方法

UIBezierPath的使用方式：

一，直接添加轨迹，然后stroke或者fill

UIColor *blue =[UIColor blueColor];

[blue set];

UIBezierPath *bezier =[UIBezierPath bezierPath];

bezier.lineWidth=2;

bezier.lineCapStyle=kCGLineCapRound;

bezier.lineJoinStyle=kCGLineJoinRound;

[bezier moveToPoint:CGPointMake(50, 5)];

[bezier addLineToPoint:CGPointMake(90, 25)];

[bezier addLineToPoint:CGPointMake(75, 50)];

[bezier addLineToPoint:CGPointMake(25, 50)];

[bezier closePath];

[bezier fill];

二，创建UIBezierPath对象，并将去path添加到layer上面

UIBezierPath *bezier2 =[UIBezierPath bezierPathWithArcCenter:CGPointMake(50, 50) radius:20 startAngle:0 endAngle:M_PI clockwise:YES];

CAShapeLayer *layer =[CAShapeLayer layer];

layer.path=bezier2.CGPath;

layer.strokeColor=[UIColor redColor].CGColor;

layer.fillColor=[UIColor blueColor].CGColor;

layer.borderWidth=1;

[self.layer addSublayer:layer];