private static void PM_RayonInterne(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            TCylindre cylindre = (TCylindre)d;

            cylindre.InvalidateModel();
        }
        private static void PM_PointReference(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            TCylindre cylindre = (TCylindre)d;

            cylindre.InvalidateModel();
        }
        private static void PM_CouleurUnieFaceExterne(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            TCylindre cylindre = (TCylindre)d;

            cylindre.InvalidateModel();
        }
        private static void PM_TextureFaceDessous(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            TCylindre cylindre = (TCylindre)d;

            cylindre.InvalidateModel();
        }
        private static void PM_NombreDivision(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            TCylindre cylindre = (TCylindre)d;

            cylindre.InvalidateModel();
        }