Question

我想在CGPoint和UIView之间转换SKNode，类似于您可以通过各自的convert(_:to/from:)方法在视图/图层之间进行转换。

这样做的正确方法是什么？

Answer 1

以下是我提出的建议：

extension SKNode {

    /// Find point in node relative to it's containing SKView
    /// so that it can be further converted relative to other views.
    func pointInContainingView(_ point:CGPoint) -> (SKView, CGPoint)? {

        guard let scene = scene, let view = scene.view else {
            return nil
        }
        // Invert Y to match view coordinate system.
        let invertedY = CGPoint(x: point.x, y: -point.y)

        // Get the point in it's containing scene.
        let pointInScene = convert(invertedY, from: scene)

        // Get the resulting point in the containing SKView
        let pointInView = view.convert(pointInScene, from: scene)

        return (view, pointInView)
    }
}

像这样使用：

// view/node

let origin = node.frame.origin

if let (nodeView, point) = node.parent?.pointInContainingView(origin) {
    let converted = nodeView.convert(point, from:view)
}

Answer 2

您需要做的就是range

如果您需要转换不是场景的子节点但是场景的后代的节点，您可以：

scene.convertPoint(toView:pointOnScene)

使用的一个很好的小扩展：

let absolutePosition = node.convert(node.position,toNode:node.scene)
scene.convertPoint(toView: absolutePosition)

如何在UIViews和SKNodes之间转换积分

2 个答案: