[GDAL]在三维场景中显示DEM

OpenFileDialog dlg = new OpenFileDialog();
dlg.Title = "";
dlg.Filter = "Img(*.img)|*.img";
if (dlg.ShowDialog() == DialogResult.OK)
{
string file = dlg.FileName;
string NameOf = System.IO.Path.GetFileNameWithoutExtension(file);
DemHelper dem = new DemHelper();
dem.Start();
dem.Read(file);
RasterBandData bandata = dem.ReadDate(50, 40);
Bitmap bitmap = dem.MakeGrayScale(50, 40);
Vector3 position = new Vector3(-100f, 0f, 100f);
//SimpleRasterShow simRaster = new SimpleRasterShow(NameOf, position, bitmap.Width, bitmap.Height);
//simRaster.IsOn = true;
//simRaster.RenderPriority = RenderPriority.Custom;
//simRaster.bitmap = bitmap;
//mSceneControl.CurrentWorld.RenderableObjects.ChildObjects.Add(simRaster);
RTerrain terrain = new RTerrain(NameOf, bandata, bitmap);
terrain.IsOn = true;
mSceneControl.CurrentWorld.RenderableObjects.ChildObjects.Add(terrain);
}