Swift：SKIR中错误位置的UIRotationGesture中的手指中心点？

我试图建立一个棋盘游戏，其中的电路板是建立精灵，你可以查看他们鸟瞰风格与SKCamera节点。我已经获得了平移，缩放和向下旋转，但他们并不觉得自然，因为我将手指放在屏幕上的任何位置都会围绕相机节点的中心旋转。Swift：SKIR中错误位置的UIRotationGesture中的手指中心点？

为了解决这个问题，我要创建一个SKNode并将这两者之间的手指作为相机的旋转和缩放锚在哪里。

但是我不能让手指的中心点的位置与在gamescene权COORDS排队。

我已经创造了一些红色方框调试和找到我的问题，看起来像这样：

在哪里，我曾经把我的手指在整个比赛场面，它认为它旋转，中心应该是永远在那个红色的一滴。

的SKView放置在故事板作为SpriteKit视图，并绑定到屏幕的与顶部和底部填充的左和右边缘：

内部的ViewController的：

@IBOutlet weak var Gameview: SKView! 

    override func viewDidLoad() { 
     super.viewDidLoad() 
     let scene = GameScene(size:Gameview.frame.size) 
     Gameview.presentScene(scene) 
    }

内的GameScene.swift，let a = sender.location(in: self.view)似乎是问题所在。

class GameScene: SKScene, UIGestureRecognizerDelegate { 

    var newCamera: SKCameraNode! 

    let rotateRec = UIRotationGestureRecognizer() 
    let zoomRec = UIPinchGestureRecognizer() 
    //let panRec = UIPanGestureRecognizer() 


    func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, 
          shouldRecognizeSimultaneouslyWith otherGestureRecognizer: UIGestureRecognizer) 
     -> Bool {return true} 



    override func didMove(to view: SKView) { 

     rotateRec.addTarget(self, action: #selector(GameScene.rotatedView (_:))) 
     rotateRec.delegate = self 
     self.view!.addGestureRecognizer(rotateRec) 

     zoomRec.addTarget(self, action: #selector(GameScene.zoomedView (_:))) 
     zoomRec.delegate = self 
     self.view!.addGestureRecognizer(zoomRec) 

     //panRec.addTarget(self, action: #selector(GameScene.pannedView (_:))) 
     //self.view!.addGestureRecognizer(panRec) 


     newCamera = SKCameraNode() 
     newCamera.position = CGPoint(x: self.size.width/2, y: self.size.height/2) 
     self.addChild(newCamera) 
     self.camera = newCamera 

     //drawBoard() 
     //I removed this function as it had nothing to do with the question 

    } 

    @objc func rotatedView(_ sender:UIRotationGestureRecognizer) { 
     print(sender.location(in: self.view)) 
     let square = SKSpriteNode(color: #colorLiteral(red: 0.7450980544, green: 0.1568627506, blue: 0.07450980693, alpha: 1), size: CGSize(width: 10, height: 10)) 
     let a = sender.location(in: self.view) 
     let b = -a.x 
     let c = -a.y 
     let d = CGPoint(x: b, y: c) 


     square.position = d 
     self.addChild(square) 


     newCamera.zRotation += sender.rotation 
     sender.rotation = 0 
     if sender.state == .ended { 
      let rotateAmount = abs(Double(newCamera.zRotation) * Double(180)/Double.pi) 
      let remainder = abs(rotateAmount.truncatingRemainder(dividingBy: 90)) 
      //print(rotateAmount) 
      //print(remainder) 
      if remainder < 10 { 
       newCamera.zRotation = CGFloat((rotateAmount-remainder)*Double.pi/180) 
      } else if remainder > 80 { 
       newCamera.zRotation = CGFloat((rotateAmount-remainder+90)*Double.pi/180) 
      } 

     } 

    } 



    @objc func zoomedView(_ sender:UIPinchGestureRecognizer) { 
     let pinch = SKAction.scale(by: 1/sender.scale, duration: 0.0) 
     newCamera.run(pinch) 
     sender.scale = 1.0 
    } 

    //@objc func pannedView(_ sender:UIPanGestureRecognizer) { 
    // sender.translation(in:) 
    //} 


    override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?) { 
     for touch in touches { 
      let location = touch.location(in: self) 
      let previousLocation = touch.previousLocation(in: self) 
      let deltaY = location.y - previousLocation.y 
      let deltax = location.x - previousLocation.x 
      newCamera!.position.y -= deltaY 
      newCamera!.position.x -= deltax 
     } 
    } 
}

我没有删除函数drawboard（），因为它在问题的上下文中是多余的。

来源

2017-09-20 Skidushe

您需要的COORDS从sender.location转换为网页显示在使用功能skview的坐标：

https://developer.apple.com/documentation/spritekit/skscene

- >https://developer.apple.com/documentation/spritekit/skscene/1520395-convertpoint

在rotatedview（）功能，把代码：

let bluesquare = SKSpriteNode(color: #colorLiteral(red: 0.2392156869, green: 0.6745098233, blue: 0.9686274529, alpha: 1), size: CGSize(width: 10, height: 10)) 

let a = sender.location(in: self.view) 
bluesquare.position = self.convertPoint(fromView: a) 

self.addChild(bluesquare)

...将添加蓝色精灵，其中你的两个手指的中心ar即

来源

2017-09-21 15:41:06 Skidushe

Swift：SKIR中错误位置的UIRotationGesture中的手指中心点？

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