title: Getting SCNNode Bounding Size in Meters
body: <p>I'm trying to wrap an SCNPlane around a SCNNode. I'm using ARKit so everything is measured in meters, but when I get the <code>boundingBox</code>, I get measurements in some other unit. I looked at Apple's documentation, and they don't specify what the units are. </p>
  
  <p>For example, one of nodes is roughly 3 meters wide, but it says its 26 units.  </p>
  
  <p>I could do a rough division to get a constant and use that to do the unit conversions, but I was wondering if there's a less hacky way to do it?</p>
  
  <pre><code>let textContainerSize = textBodyNode.boundingBox
  let xSize = textContainerSize.max.x - textContainerSize.min.x
  let ySize = textContainerSize.max.y - textContainerSize.min.y
  print("size")
  print(xSize, ySize) // &lt;-- returns (26,2) 
  let planeGeometry = SCNPlane(width: xSize, height: ySize)
  </code></pre>