private void UpdateModel()
{
var r = new TerrainModel();
r.Load(this.Source);
// r.Texture = new SlopeDirectionTexture(0);
r.Texture = new SlopeTexture(8);
// r.Texture = new MapTexture(@"D:\tmp\CraterLake.png") { Left = r.Left, Right = r.Right, Top = r.Top, Bottom = r.Bottom };
this.visualChild.Content = r.CreateModel(2);
}