private void DrawVoronoi(
            IRenderer drawing,
            World world)
        {
            foreach (var cell in world.Cells)
            {
                var color = HslHelper.GetColorFromHSL(
                    (cell.Height * -WaterLevel) + WaterLevel,
                    1,
                    0.5);

                drawing.AddPolygon(color, cell.Points);
                drawing.AddPoint(cell.RegionBase);
            }
        }