public void ToManifest(System.IO.StreamWriter w)
        {
            if (terrainGenerator is Multiverse.Lib.HeightfieldGenerator.HeightfieldTerrainGenerator)
            {
                Multiverse.Lib.HeightfieldGenerator.HeightfieldTerrainGenerator tmpGen = terrainGenerator as Multiverse.Lib.HeightfieldGenerator.HeightfieldTerrainGenerator;

                w.WriteLine("Mosaic:{0}", tmpGen.HeightfieldName);
            }

            terrainDisplay.ToManifest(w);
        }