public void PositionScene(ARSCNView sceneView, string arLaunchType)
        {
            var arConfiguration = new ARWorldTrackingConfiguration
            {
                PlaneDetection         = ARPlaneDetection.Horizontal,
                LightEstimationEnabled = true
            };

            sceneView.Session.Run(arConfiguration, ARSessionRunOptions.ResetTracking);

            var sceneShipNode = sceneView.Scene.RootNode.FindChildNode("ship", true);

            sceneShipNode.Position = new SCNVector3(2f, -2f, -9f);

            var animationCycle  = SCNAction.RepeatActionForever(SCNAction.RotateBy(0f, 6f, 0, 5));
            var animationCrash  = SCNAction.RepeatActionForever(SCNAction.RotateBy(0, (float)Math.PI, (float)Math.PI, (float)1));
            var animationNormal = SCNAction.RepeatActionForever(SCNAction.RotateBy(0, 0, 0, 1));
            var animationRotate = SCNAction.RepeatActionForever(SCNAction.RotateBy(0, 0, 2, 1));


            var scenePivotNode = new SCNNode {
                Position = new SCNVector3(0.0f, 2.0f, 0.0f)
            };

            scenePivotNode.RunAction(SCNAction.RepeatActionForever(SCNAction.RotateBy(0, -2, 0, 10)));

            sceneShipNode.RemoveFromParentNode();
            scenePivotNode.AddChildNode(sceneShipNode);

            sceneView.Scene.RootNode.AddChildNode(scenePivotNode);

            sceneShipNode.Scale    = new SCNVector3(0.1f, 0.1f, 0.1f);
            sceneShipNode.Position = new SCNVector3(2f, -2f, -3f);


            switch (arLaunchType)
            {
            case "Rotate Fly":
                sceneShipNode.RunAction(animationRotate);
                break;

            case "Crash Fly":
                sceneShipNode.RunAction(animationCrash);
                break;

            case "Cycle Fly":
                sceneShipNode.RunAction(animationCycle);
                break;

            case "Normal Fly":
                sceneShipNode.RunAction(animationNormal);
                break;

            default:
                scenePivotNode.RemoveAllActions();
                scenePivotNode.RunAction(SCNAction.Unhide());
                break;
            }
        }