コード例 #1
0
        public void Save(int xoff, int yoff, int buf_xsize, int buf_ysize, double[] buffer)
        {
            try
            {
                OSGeo.GDAL.Gdal.AllRegister();
                _dataSet = OSGeo.GDAL.Gdal.Open(_fileName, OSGeo.GDAL.Access.GA_Update);

                _band1 = _dataSet.GetRasterBand(1);
                CPLErr err1 = _band1.WriteRaster(xoff,
                                                 yoff,
                                                 _resultInfo.Width,
                                                 buf_ysize,
                                                 buffer,
                                                 buf_xsize,
                                                 buf_ysize,
                                                 0,
                                                 0);

                _dataSet.Dispose();
                _band1.Dispose();
            }
            catch (Exception ex)
            {
                throw new Exception("数据写入失败。" + ex.Message);
            }
        }
コード例 #2
0
        /// <summary>
        /// 数据保存
        /// </summary>
        public void Save()
        {
            try
            {
                OSGeo.GDAL.Gdal.AllRegister();
                _dataSet = OSGeo.GDAL.Gdal.Open(_fileName, OSGeo.GDAL.Access.GA_Update);

                _band1 = _dataSet.GetRasterBand(1);
                CPLErr err1 = _band1.WriteRaster(0,
                                                 0,
                                                 _resultInfo.Width,
                                                 _resultInfo.Height,
                                                 _pixels1,
                                                 _resultInfo.Width,
                                                 _resultInfo.Height,
                                                 0,
                                                 0);

                _dataSet.Dispose();
                _band1.Dispose();
            }
            catch (Exception ex)
            {
                throw new Exception("数据写入失败。" + ex.Message);
            }
        }
コード例 #3
0
ファイル: GdalImage.cs プロジェクト: ExRam/DotSpatial-PCL
        private static void WriteGrayIndex(Bitmap value, int xOffset, int yOffset, Band first)
        {
            int width = value.Width;
            int height = value.Height;
            BitmapData bData = value.LockBits(new Rectangle(0, 0, width, height),
                                ImageLockMode.ReadWrite,
                                PixelFormat.Format32bppArgb);
            int stride = Math.Abs(bData.Stride);

            byte[] r = new byte[stride * height * 4];

            Marshal.Copy(bData.Scan0, r, 0, r.Length);

            byte[] vals = new byte[height * stride];

            for (int row = 0; row < height; row++)
            {
                for (int col = 0; col < width; col++)
                {
                    byte blue = r[row * stride + col * 4];
                    byte green = r[row * stride + col * 4 + 1];
                    byte red = r[row * stride + col * 4 + 2];
                    int gray = Convert.ToInt32(.3 * red + .59 * green + .11 * blue);
                    if (gray > 255) gray = 255;
                    if (gray < 0) gray = 0;
                    vals[row * width + col] = Convert.ToByte(gray);
                }
            }
            first.WriteRaster(xOffset, yOffset, width, height, vals, width, height, 0, 0);
        }
コード例 #4
0
ファイル: GdalImage.cs プロジェクト: ExRam/DotSpatial-PCL
        private static void WriteRgb(Bitmap value, int xOffset, int yOffset, Band first, Dataset set)
        {
            if (set.RasterCount < 3)
            {
                throw new GdalException(
                    "RGB Format was indicated but there are only " +
                    set.RasterCount +
                    " bands!");
            }

            int width = value.Width;
            int height = value.Height;

            BitmapData bData = value.LockBits(new Rectangle(0, 0, width, height),
                                 ImageLockMode.ReadWrite,
                                 PixelFormat.Format24bppRgb);
            int stride = Math.Abs(bData.Stride);
            byte[] vals = new byte[stride * height];
            Marshal.Copy(bData.Scan0, vals, 0, vals.Length);
            value.UnlockBits(bData);
            byte[] r = new byte[width * height];
            byte[] g = new byte[width * height];
            byte[] b = new byte[width * height];

            for (int row = 0; row < height; row++)
            {
                for (int col = 0; col < width; col++)
                {
                    b[row * width + col] = vals[row * stride + col * 4];
                    g[row * width + col] = vals[row * stride + col * 4 + 1];
                    r[row * width + col] = vals[row * stride + col * 4 + 2];
                }
            }
            Band green = set.GetRasterBand(2);
            Band blue = set.GetRasterBand(3);
            first.WriteRaster(xOffset, yOffset, width, height, r, width, height, 0, 0);
            first.FlushCache();
            green.WriteRaster(xOffset, yOffset, width, height, g, width, height, 0, 0);
            green.FlushCache();
            blue.WriteRaster(xOffset, yOffset, width, height, b, width, height, 0, 0);
            blue.FlushCache();
            // first disposed in caller
            green.Dispose();
            blue.Dispose();
        }
コード例 #5
0
ファイル: GdalImage.cs プロジェクト: ExRam/DotSpatial-PCL
 private static void WritePaletteBuffered(Bitmap value, int xOffset, int yOffset, Band first)
 {
     ColorTable ct = first.GetRasterColorTable();
     if (ct == null)
     {
         throw new GdalException("Image was stored with a palette interpretation but has no color table.");
     }
     if (ct.GetPaletteInterpretation() != PaletteInterp.GPI_RGB)
     {
         throw new GdalException("Only RGB palette interpretation is currently supported by this " +
                                 " plug-in, " + ct.GetPaletteInterpretation() + " is not supported.");
     }
     int width = value.Width;
     int height = value.Height;
     BitmapData bData = value.LockBits(new Rectangle(0, 0, width, height),
                                       ImageLockMode.ReadOnly, PixelFormat.Format32bppArgb);
     int stride = Math.Abs(bData.Stride);
     byte[] r = new byte[stride * height];
     Marshal.Copy(bData.Scan0, r, 0, r.Length);
     value.UnlockBits(bData);
     byte[] vals = new byte[width * height];
     byte[][] colorTable = new byte[ct.GetCount()][];
     for (int i = 0; i < ct.GetCount(); i++)
     {
         ColorEntry ce = ct.GetColorEntry(i);
         colorTable[i] = new[]
                             {
                                 (byte) ce.c3, (byte) ce.c2, (byte) ce.c1,
                                 (byte) ce.c4
                             };
     }
     for (int row = 0; row < height; row++)
     {
         for (int col = 0; col < width; col++)
         {
             vals[row * width + col] = MatchColor(r, row * stride + col * 4, colorTable);
         }
     }
     first.WriteRaster(xOffset, yOffset, width, height, vals, width, height, 0, 0);
 }