void ApplyPreviewTransform(ProBuilderMesh mesh)
        {
            var previous = m_PreviewObject != null;

            if (previous)
            {
                var trs = mesh.transform;
                trs.position      = m_PreviewObject.transform.position;
                trs.localRotation = m_PreviewObject.transform.localRotation;
                trs.localScale    = m_PreviewObject.transform.localScale;
            }
            else
            {
                EditorUtility.ScreenCenter(mesh.gameObject);
                EditorUtility.SnapInstantiatedObject(mesh);
            }
        }