SceneKit : SCNPhysicsBody get current velocity
You can get the "current" velocity with
physicsBody.velocityBut this is valid only within the "game loop" callbacks (updateAtTime, didApplyAnimations, didSimulatePhysics, will/didRenderScene).
...in your view controller, you have to use SCNSceneRendererDelegate protocol like
class GameViewController: UIViewController,SCNSceneRendererDelegate{...and in the viewDidLoad method set the SCNView delegate to scnView.delegate=self
Then you can implement for example
func renderer(renderer: SCNSceneRenderer, didRenderScene scene: SCNScene, atTime time: NSTimeInterval) { let scnView = self.view as! SCNView let scene = scnView.scene let compass = scene?.rootNode.childNodeWithName("ObjectName", recursively: true) print((compass?.physicsBody?.angularVelocity)!)}this works in my case.hope it helps a bit!