ARKit 1.5如何获得垂直平面的旋转 [英] ARKit 1.5 how to get the rotation of a vertical plane

问题描述

我正在试验垂直平面，我正在尝试将一个节点放在墙上，并根据垂直平面进行正确的旋转。

这里是被挖掘的垂直平面的ARHitTestResult：

  let hitLocation = sceneView.hitTest（touchPoint，types：.existingPlaneUsingExtent）
  

我尝试过以下方法：

 让hitRotation = hitLocation.first？.worldTransform.columns.2 
  

和

 让anchor = hitLocation.first？.anchor 
让hitRotation =锚？.transform.columns.2 
  

他们中的任何一个似乎都没有这是我希望做的事情：

  boardNode.eulerAngles = SCNVector3（（hitRotation？.x）！，（hitRotation？.y）！，0）
  

如果有人可以帮我解决这个问题，我会非常感激，因为我还没有找到很多关于ARKit的教程。

编辑

所以这里有效（感谢Josh）：

  let hit = sceneView.hitTest（touchPoint，types：.existingPlaneUsingExtent）
让planeAnchor = hit.first？.anchor为？ ARPlaneAnchor 
 
 guard let anchoredNode = sceneView.node（for：planeAnchor！）else {return} 
 
 let anchorNodeOrientation = anchoredNode.worldOrientation 
 
 boardNode。 eulerAngles.y = .pi * anchorNodeOrientation.y 
  

注意：.worldOrientation比.rotation更准确在这种情况下，只是想提一下。

解决方案

这是你想要的吗？这里我使用屏幕中心的CGPoint值，但你可以使用触摸等：

  func addObjectToScreen（）{
 
如果让hit = self.sceneView？.hitTest（self.viewCenter，types：[。expertPlaneUsingExtent]）。last {
 
 let hitTestTransform = SCNMatrix4（hit.worldTransform）
 
 let vector = SCNVector3Make（hitTestTransform.m41，hitTestTransform.m42，hitTestTransform.m43）
 
 node.position = vector 
 
 return 
} 
} 
  

更新：如果你想轮换与Plane相关联的节点你不能这样得到它：

  func renderer（_ renderer：SCNSceneRenderer，didAdd node： SCNNode，用于锚：ARAnchor）{
 
 print（node.rotation）
 
} 
  

然后根据需要使用它？

进一步更新：

 覆盖func touchesBegan（_ touches：Set< UITouch>，with event：UIEvent？）{
 
 / * 
 1.获取当前触摸位置
 2.检查我们是否触摸了有效节点
 3.检查我们的触摸对象是否为ARPlane锚点
 * / 
 
 guard let touchLocation = touches.first ？。location（in：augmentedRealityView），
 let hitTest = augmentedRealityView.hitTest（touchLocation，types：.existingPlaneUsingExtent）。第一，
让planeAnchor = hitTest.anchor为？ ARPlaneAnchor 
 else {
 
 //未检测到有效平面因此隐藏平面信息标签
 
返回
 
} 
 
 //我们有一个有效的平面所以显示它的当前信息
 guard let anchoredNode = augmentedRealityView.node（for：planeAnchor）else {return} 
 print（anchoredNode.rotation）
 
} 
  

I'm experimenting with the vertical plane, and I'm trying to place a node on a wall with the correct rotation based on that vertical plane.

here's the ARHitTestResult of the vertical plane that gets tapped:

let hitLocation = sceneView.hitTest(touchPoint, types: .existingPlaneUsingExtent)

I've tried the following:

let hitRotation = hitLocation.first?.worldTransform.columns.2

and

let anchor = hitLocation.first?.anchor
let hitRotation = anchor?.transform.columns.2

neither one of them seem to work.

And this is what I'm hoping to do:

boardNode.eulerAngles = SCNVector3((hitRotation?.x)!, (hitRotation?.y)!, 0)

I'd much appreciate it if someone could help me out with this as I can't find a lot of tutorials on ARKit yet.

EDIT

so here's what worked (thanks to Josh):

let hit = sceneView.hitTest(touchPoint, types: .existingPlaneUsingExtent)
let planeAnchor = hit.first?.anchor as? ARPlaneAnchor

guard let anchoredNode =  sceneView.node(for: planeAnchor!) else { return }

let anchorNodeOrientation = anchoredNode.worldOrientation

boardNode.eulerAngles.y = .pi * anchorNodeOrientation.y

Note: .worldOrientation is way more accurate than .rotation in this case, just wanted to mention this.

解决方案

Is this what your looking for? Here I am using the screen center for the CGPoint value, but you can use touch etc:

func addObjectToScreen() {

        if let hit = self.sceneView?.hitTest(self.viewCenter, types: [.existingPlaneUsingExtent]).last {

            let hitTestTransform = SCNMatrix4(hit.worldTransform)

            let vector = SCNVector3Make(hitTestTransform.m41, hitTestTransform.m42, hitTestTransform.m43)

            node.position = vector

            return
        }
}

Update: If you want to rotation of the node associated with the Plane couldn't you could get it like so:

 func renderer(_ renderer: SCNSceneRenderer, didAdd node: SCNNode, for anchor: ARAnchor) {

      print(node.rotation)

}

Then use it as you need?

Further Update:

   override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {

 /*
 1. Get The Current Touch Location
 2. Check That We Have Touched A Valid Node
 3. Check That Our Touched Object Is An ARPlane Anchor
 */

 guard let touchLocation = touches.first?.location(in: augmentedRealityView),
 let hitTest = augmentedRealityView.hitTest(touchLocation, types: .existingPlaneUsingExtent).first,
 let planeAnchor = hitTest.anchor as? ARPlaneAnchor
 else {

 // No Valid Plane Has Been Detected So Hide The Plane Information Label

 return

 }

    //We Have A Valid Plane So Display It's Current Info
    guard let anchoredNode =  augmentedRealityView.node(for: planeAnchor) else { return }
    print(anchoredNode.rotation)

 }

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