//根据一个矩形画曲线
+ (UIBezierPath *)bezierPathWithRect:(CGRect)rect
//根据矩形框的内切圆画曲线
+ (UIBezierPath *)bezierPathWithOvalInRect:(CGRect)rect
+ (UIBezierPath *)bezierPathWithRoundedRect:(CGRect)rect cornerRadius:(CGFloat)cornerRadius
//在矩形中,可以针对四角中的某个角加圆角
+ (UIBezierPath *)bezierPathWithRoundedRect:(CGRect)rect byRoundingCorners:(UIRectCorner)corners cornerRadii:(CGSize)cornerRadii
参数:
corners:枚举值,可以选择某个角
cornerRadii:圆角的大小
参数:
center:弧线中心点的坐标
radius:弧线所在圆的半径
startAngle:弧线开始的角度值
endAngle:弧线结束的角度值
clockwise:是否顺时针画弧线
- (void)addQuadCurveToPoint:(CGPoint)endPoint controlPoint:(CGPoint)controlPoint
参数:
endPoint:曲线的终点
controlPoint:画曲线的基准点
例子:UIBezierPath *movePath = [UIBezierPath bezierPath];
CGPoint fromPoint = self.imageView.center;
CGPoint endPoint = CGPointMake(280, 400);
[movePath moveToPoint:fromPoint]; //开始点
[movePath addQuadCurveToPoint:endPoint controlPoint:CGPointMake(280,0)]; //画二元曲线,结束点、控制点
- (void)addCurveToPoint:(CGPoint)endPoint controlPoint1:(CGPoint)controlPoint1 controlPoint2:(CGPoint)controlPoint2
参数:
endPoint:曲线的终点
controlPoint1:画曲线的第一个基准点
controlPoint2:画曲线的第二个基准点
//自己创建一段曲线
UIBezierPath *path = [UIBezierPath bezierPath];
[path moveToPoint:CGPointMake(0, 100)];//开始点
[path addLineToPoint:CGPointMake(300, 100)];//向这条线上加点
[path addLineToPoint:CGPointMake(300, 200)];