private void Configure(ImageData baseImage, IRaster raster)
{
_baseImage = baseImage;
LegendText = Path.GetFileNameWithoutExtension(raster.Filename);
base.OnItemChanged();
}
/// <summary>
/// Creates a new instance of a MapRasterLayer and the specified image data to use for rendering it.
/// </summary>
public MapRasterLayer(IRaster baseRaster, ImageData baseImage):base(baseRaster)
{
Configure(baseImage, baseRaster);
}
/// <summary>
/// Creates a new instance of a Raster layer, and will create a "FallLeaves" image based on the
/// raster values.
/// </summary>
/// <param name="raster">The raster to use</param>
public MapRasterLayer(IRaster raster):base(raster)
{
string imageFile = Path.ChangeExtension(raster.Filename, ".bmp");
if (File.Exists(imageFile)) File.Delete(imageFile);
IRasterSymbolizer rs = new RasterSymbolizer();
rs.Raster = raster;
rs.Scheme.ApplyScheme(ColorSchemes.FallLeaves, raster);
Bitmap bmp = new Bitmap(raster.NumColumns, raster.NumRows);
bmp.Save(imageFile);
raster.PaintColorSchemeToBitmap(rs, bmp, raster.ProgressHandler);
bmp.Save(imageFile);
bmp.Dispose();
ImageData id = new ImageData(imageFile);
id.Bounds.AffineCoefficients = raster.Bounds.AffineCoefficients;
id.WorldFile.Affine = raster.Bounds.AffineCoefficients;
Configure(id, raster);
}
private void ReadPaletteBuffered()
{
ColorTable ct = _red.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 interpreation is currently supported by this plugin, " + ct.GetPaletteInterpretation() + " is not supported.");
}
int tw = TileCollection.TileWidth;
int th = TileCollection.TileHeight;
for(int row = 0; row < TileCollection.NumTilesTall(); row++)
{
for(int col = 0; col < TileCollection.NumTilesWide(); col++)
{
// takes into account that right and bottom tiles might be smaller.
int width = TileCollection.GetTileWidth(col);
int height = TileCollection.GetTileHeight(row);
ImageData id = new ImageData();
byte[] red = new byte[width * height];
_red.ReadRaster(col * tw, row * th, width, height, red, width, height, 0, 0);
Bitmap image = new Bitmap(width, height, PixelFormat.Format32bppArgb);
BitmapData bData = image.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.ReadWrite, PixelFormat.Format32bppArgb);
Stride = bData.Stride;
image.UnlockBits(bData);
const int bpp = 4;
int stride = Stride;
byte[] vals = new byte[width * height * 4];
byte[][] colorTable = new byte[256][];
for (int i = 0; i < 255; i++)
{
ColorEntry ce = ct.GetColorEntry(i);
colorTable[i] = new[] { (byte)ce.c3, (byte)ce.c2, (byte)ce.c1, (byte)ce.c4 };
}
for (int r = 0; r < height; r++)
{
for (int c = 0; c < width; col++)
{
Array.Copy(colorTable[red[c + r * width]], 0, vals, row * stride + col * bpp, 4);
}
}
id.Values = vals;
id.WriteBytes();
TileCollection.Tiles[row, col] = id;
}
}
SetTileBounds(Bounds.AffineCoefficients);
}