BuildItArSample.iOS.ViewController.UpdateElementsOnScreen C# (CSharp) Method

        private void UpdateElementsOnScreen(float roll, float pitch, float yaw)
        {
            foreach (var evt in events)
            {
                var fe = evt.Key;
                if (fe == null || fe.Bounds.Height == 0 || fe.Bounds.Width == 0) continue;

                var element = events[fe];
                if (element == null) continue;

                var offset = world.CalculateOffset(element, (int) fe.Bounds.Width, (int) fe.Bounds.Height, roll, pitch, yaw);

                fe.Hidden = true;

                if (offset == null || element.Element == null) continue;

                var tf = CGAffineTransform.MakeTranslation((float)offset.TranslateX, 0);
                if (offset.Scale > 0)
                {
                    tf.Scale((float)offset.Scale, (float)offset.Scale);
                    fe.Center = new CGPoint(0, View.Bounds.Height / 2);
                    fe.Transform = tf;
                    fe.Hidden = false;
                }
            }
        }