private void Init() { _ropeSimulation = new RopeSimulation( 40, // 40 Particles (Masses) 1f, // Each Particle Has A Weight Of 1 Gram 10000.0f, // springConstant In The Rope 0.0f, // Normal Length Of Springs In The Rope 0.0002f, // Spring Inner Friction Constant new Vector(0, 0), // Gravitational Acceleration 5, new Vector(BeginPoint.Point.X, BeginPoint.Point.Y)); _timer = new DispatcherTimer(TimeSpan.FromMilliseconds(1), DispatcherPriority.Render, AnimationCallback, Dispatcher.CurrentDispatcher); _timer.Start(); _sw = Stopwatch.StartNew(); }