private void button1_Click(object sender, EventArgs e)
{
IGeoDataset inGeoDataSet;
IGeoDataset outGeoDataSet;
ISurfaceOp SurfaceOp = new RasterSurfaceOpClass();
ILayer layer = GetLayerByName(comboBox1.SelectedItem.ToString());
IRasterLayer rasterLayer = layer as IRasterLayer;
IRaster raster = rasterLayer.Raster;
inGeoDataSet = raster as IGeoDataset;
azimuthAngle = System.Convert.ToDouble(azimuthBox.Text);
verticalAngle = System.Convert.ToDouble(verticalBox.Text);
outGeoDataSet = SurfaceOp.HillShade(inGeoDataSet, azimuthAngle, verticalAngle, true);
try
{
IWorkspaceFactory pWKSF = new RasterWorkspaceFactoryClass();
IWorkspace pWorkspace = pWKSF.OpenFromFile(System.IO.Path.GetDirectoryName(textBox1.Text), 0);
ISaveAs pSaveAs = outGeoDataSet as ISaveAs;
pSaveAs.SaveAs(System.IO.Path.GetFileName(textBox1.Text), pWorkspace, "TIFF");
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
IRasterLayer pRlayer = new RasterLayer();
pRlayer.CreateFromRaster((IRaster)outGeoDataSet);
pRlayer.Name = System.IO.Path.GetFileName(textBox1.Text);
mainForm.axMapControl1.AddLayer(pRlayer, 0);
}
public IRaster CreateRasterHillShade(IRaster raster)
{
try
{
RasterSurfaceOpClass class2 = new RasterSurfaceOpClass();
IGeoDataset geoDataset = raster as IGeoDataset;
double zFactor = Convert.ToDouble(textBoxX3.Text);
if (zFactor <= 0)
{
MessageBox.Show("请指定大于0的正数！", "信息", MessageBoxButtons.OK, MessageBoxIcon.Information);
return(null);
}
object o = zFactor;
double azimuth = slider2.Value;
double altitude = slider1.Value;
bool inModelShadows = false;
if (cmbRenderType.SelectedIndex == 1)
{
inModelShadows = true;
}
IGeoDataset pGeoDataset = class2.HillShade(geoDataset, azimuth, altitude, inModelShadows, ref o);
IRaster pRaster = (IRaster)pGeoDataset;
ISaveAs2 pSaveAs = pRaster as ISaveAs2;
IDataset pDataset = pSaveAs.SaveAs(m_ResultPath + ".tif", null, "TIFF");
System.Runtime.InteropServices.Marshal.ReleaseComObject(pDataset);
MessageBox.Show("山体阴影计算完毕！", "信息", MessageBoxButtons.OK, MessageBoxIcon.Information);
return(pRaster);
}
catch (SystemException e)
{
MessageBox.Show(e.Message, "提示", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return(null);
}
}
