public Bitmap2(Bitmap bmp = null, string name = "", string dec = "", GRasterLayer gdalLayer = null, IGBand gdalBand = null)
{
_bitmap = bmp;
_name = name;
_dec = dec;
_gdalBand = gdalBand;
_gdalLayer = gdalLayer;
}
/// <summary>
/// 波段读取
/// </summary>
/// <param name="filePath"></param>
/// <param name="parentNode"></param>
private void ReadBand(string rasterFilename, TreeNode parentNode)
{
string name = parentNode.Text;
GRasterLayer _layer = new GRasterLayer(rasterFilename);
for (int i = 0; i < _layer.BandCollection.Count; i++)
{
IGBand band = _layer.BandCollection[i];
band.BandName = name + "_波段_" + i;
Bitmap2 bmp2 = new Bitmap2(bmp: band.GetBitmap(), name: band.BandName, gdalBand: band, gdalLayer: _layer);
//获取band对应的bitmap格式图像，载入treedNode中
_imageDic.Add(band.BandName, bmp2);
TreeNode childrenNode = new TreeNode(band.BandName);
Invoke(new UpdateTreeNodeHandler(UpdateTreeNode), parentNode, childrenNode);
}
}
public void Output(string outputDir)
{
Dataset readDs = _rasterLayer.PDataSet;
Driver drv = Gdal.GetDriverByName("GTiff");
string[] options = new string[] { "BLOCKXSIZE=" + readDs.RasterXSize, "BLOCKYSIZE=" + readDs.RasterYSize };
Dataset writeDs = drv.Create(outputDir, readDs.RasterXSize, readDs.RasterYSize, 1, _rasterLayer.PDataType, options);
for (int i = 1; i <= _rasterLayer.BandCount; i++)
{
IGBand readBand = _rasterLayer.BandCollection[i - 1];
Band writeBand = writeDs.GetRasterBand(i);
writeBand.WriteRaster(0, 0, readDs.RasterXSize, readDs.RasterYSize, readBand.GetByteBuffer(), readDs.RasterXSize, readDs.RasterYSize, 0, 0);
}
writeDs.FlushCache();
}
private void UpdateBands()
{
_bandIndexSave = new List <int>();
ImageList imageList = new ImageList();
for (int i = 0; i < _gdalLayer.BandCollection.Count; i++)
{
IGBand band = _gdalLayer.BandCollection[i];
ListViewItem lvi = new ListViewItem
{
ImageIndex = i
};
lvi.SubItems.Add(band.BandName);
lvi.SubItems.Add(band.Width + "x" + band.Height);
band_listView.Items.Add(lvi);
imageList.Images.Add(band.GetBitmap());
}
band_listView.SmallImageList = imageList;
band_listView.LargeImageList = imageList;
}
