private void HandlerPick(UIPinchGestureRecognizer sender)
{
ARSCNView pinchScene = sender.View as ARSCNView;
CoreGraphics.CGPoint pinchLocation = sender.LocationInView(pinchScene);
SCNHitTestResult[] hitTest = pinchScene.HitTest(pinchLocation, new SCNHitTestOptions());
if (hitTest?.Any() != true)
{
return;
}
SCNNode node = hitTest.First().Node;
SCNAction pinchAction = SCNAction.ScaleBy(sender.Scale, 0);
node.RunAction(pinchAction);
sender.Scale = 1.0f;
}