添加圆弧
UIBezierPath *path = [UIBezierPath bezierPath];
[path moveToPoint:CGPointMake(200, 400)];
[path addLineToPoint:CGPointMake(225, 410)];
[path addArcWithCenter:CGPointMake(200, 400) radius:25 startAngle:0 endAngle:1.5*M_PI clockwise:YES];
// [path closePath];
// [path removeAllPoints];
[path stroke];
追加路径
UIBezierPath *path_A = [UIBezierPath bezierPath];
[path_A moveToPoint:CGPointMake(200, 500)];
[path_A addLineToPoint:CGPointMake(225, 410)];
UIBezierPath *path_B = [UIBezierPath bezierPath];
[path_B moveToPoint:CGPointMake(200, 600)];
[path_B addLineToPoint:CGPointMake(225, 500)];
[path_A appendPath:path_B];
[path_A stroke];
创建翻转路径，即起点变成终点，终点变成起点
UIBezierPath *path = [UIBezierPath bezierPath];
[path moveToPoint:CGPointMake(50, 50)];
[path addLineToPoint:CGPointMake(100, 50)];
path.lineWidth = 5.0f;
NSLog(@"%@",NSStringFromCGPoint(path.currentPoint));
UIBezierPath *path_b = [path bezierPathByReversingPath];
CGAffineTransform transform = CGAffineTransformMakeTranslation(200, 0);
[path_b applyTransform: transform];
// 两条路径分别添加一条直接到 self.center
[path addLineToPoint: CGPointMake(self.frame.size.width*0.5, self.frame.size.height*0.5)];
[path_b addLineToPoint: CGPointMake(self.frame.size.width*0.5, self.frame.size.height*0.5)];
NSLog(@"%@",NSStringFromCGPoint(path_b.currentPoint));
[[UIColor redColor] set];
[path stroke];
[[UIColor blueColor] set];
[path_b stroke];
路径进行仿射变换
UIBezierPath *path = [UIBezierPath bezierPath];
[path moveToPoint:CGPointMake(100, 50)];
[path addLineToPoint:CGPointMake(200, 50)];
CGAffineTransform transform = CGAffineTransformRotate(self.transform, M_PI_4);
[path applyTransform:transform];
path.lineWidth = 5.0f;
[path stroke];
创建虚线
CGFloat dashStyle[] = {1.0f, 2.0f};
UIBezierPath *path = [UIBezierPath bezierPath];
[path moveToPoint:CGPointMake(50, 50)];
[path addLineToPoint:CGPointMake(100, 50)];
[path setLineDash:dashStyle count:2 phase:0.0];
[path stroke];
