UIBezierPath是否支持相对路径？

Question

我将Apple文档阅读到UIBezierPath对象。我是否正确理解它不支持相对路径？

我正在尝试将此路径转换为UIBezierPath：

// svg path
m90 36c-7 0-13 6-13 13s6 13 13 13 13-6 13-13-6-13-13-13zm-27 32c-7 0-13 6-13 13s6 13 13 13 13-6 13-13-6-13-13-13z

我开始是：

UIBezierPath* myPath = [UIBezierPath bezierPath];
CGPoint currentPoint;

[myPath moveToPoint:CGPointMake([self sizeDependendX:90], [self sizeDependendY:36])];
currentPoint = CGPathGetCurrentPoint(myPath.CGPath);
[myPath addCurveToPoint:CGPointMake(currentPoint.x - 13, currentPoint.y + 13)
          controlPoint1:CGPointMake(currentPoint.x +  7, currentPoint.y +  0)
          controlPoint2:CGPointMake(currentPoint.x - 13, currentPoint.y +  6)];
currentPoint = CGPathGetCurrentPoint(myPath.CGPath);
[myPath addCurveToPoint:CGPointMake(currentPoint.x + 13 ,currentPoint.y + 13)
          controlPoint1:CGPointMake(currentPoint.x +  0, currentPoint.y +  7)
          controlPoint2:CGPointMake(currentPoint.x +  6, currentPoint.y + 13)];
...

这真的意味着要那样吗，还是我想念这里的东西？

Answer 1

的确，仅存在no个“相对”点。

（（如果真的需要，可以进行扩展，功能或其他一些修饰使其整洁，这很简单。在Swift中，我有类似的东西

go(across: 7.0, down: -2.5)
go(across: 4.0, down: -2.5)
go(across: 7.0, down: -2.5)

..有点。您所需的功能或扩展仅几行代码。）

很抱歉这个坏消息！ ：）