Get size of dae node

Question

Suppose I have a collada file which has a box in it and I import the dae file into the scene. Now after importing in the scene I know the dae object is a box. How can I get the dimensions of the box in scenekit after adding it to the scene

If I import the node as a SCNBox i get errors saying that SNCBox is not a subtype of SCNNode.

    floorNode = scene.rootNode.childNodeWithName("floor", recursively: false) as SCNBox
    floorNode?.physicsBody = SCNPhysicsBody.staticBody()
    floorNode?.physicsBody?.categoryBitMask = 2

    let floorGeo: SCNBox  = floorNode.geometry! as SCNBox

How do I get the dimensions if SCNNode is the only way to import nodes?

Answer 1

Example Swift code on how to use boundingBox:

var min = shipNode.boundingBox.min
var max = shipNode.boundingBox.max
let w = CGFloat(max.x - min.x)
let h = CGFloat(max.y - min.y)
let l = CGFloat(max.z - min.z)
let boxShape = SCNBox (width: w , height: h , length: l, chamferRadius: 0.0)
let shape = SCNPhysicsShape(geometry: boxShape, options: nil)

shipNode.physicsBody!.physicsShape = SCNPhysicsShape(geometry: boxShape, options: nil)
shipNode.physicsBody = SCNPhysicsBody.dynamic()