title: How do I make my camera node focus on a tapped node? (SceneKit)
body: <p>I created an empty node and added a set of nodes to the empty node and finally adding that to my root node. After which, I create a camera node as shown below. I am trying to add a feature to my scenekit app where by when a user tap a node, the camera moves and focus on that node. In my handleTap function, I am trying to get the position of the node and then fix the camera to that position but it is not working. Any suggestions?</p>
  
  <pre><code>//snippet
      var emptyNode = SCNNode()
      emptyNode.addChildNode(Node)
      rootNode.addChildNode(emptyNode)
  
      cameraNode.camera = SCNCamera()
      cameraNode.position = SCNVector3(1,0,10)
      rootNode.addChildNode(cameraNode)
  
  
       func handleTap(recognizer: UITapGestureRecognizer) {
              let location = recognizer.locationInView(sceneView)
              let hits = sceneView!.hitTest(location, options: nil)
  
              if let tap = hits.first?.node {
                  tappNode = tap
                  myScene?.cameraNode.position = tappNode.position
              }
  </code></pre>
  
  <p>EDIT</p>
  
  <p>So, I am making a little progress but I still cannot figure out the position of my node. The Updated code is given below. What I have done is to create a new node and attached a camera to it. That node is then added to the tap node as a child.I still cannot get the position of the tap node within the context of empty node.</p>
  
  <pre><code>let cameraNode = SCNNode()
  cameraNode.name = "cameraNode"
  cameraNode.camera = SCNCamera()
  cameraNode.position = SCNVector3Make(1,0,10)
  
  
  tappNode.addChildNode(cameraNode)
  
  
  SCNTransaction.begin()
  SCNTransaction.setAnimationDuration(3.0)
  
  SCNTransaction.setCompletionBlock() {
      print("done")
  }
  sceneView!.pointOfView = cameraNode
  
  SCNTransaction.commit()
  </code></pre>