private void timer_Tick(object sender, EventArgs e) { double time = stopwatch.Elapsed.TotalSeconds / 10; field.Clear(); field.AddPotentialPoint(100 + 50 * Math.Cos(time) + 10 * Math.Cos(2.1 * time), 100 + 40 * Math.Sin(time), 1); field.AddPotentialPoint(20, 10, -1); field.AddPotentialPoint(180, 20, 3); field.AddPotentialPoint(20, 180, -0.5); field.AddPotentialPoint(180, 180, 2); field.RaiseChanged(); }