private Bitmap BuildBitmap(T[][] buffers, LevelDef level, TileIdentify tile)
{
using (IBitmapBuilder <T> builder = GetBitmapBuilder())
{
Bitmap bitmap = null;
if (buffers.Length == 1)
{
bitmap = new Bitmap(_tileSize, _tileSize, PixelFormat.Format8bppIndexed);
bitmap.Palette = BitmapBuilderFactory.GetDefaultGrayColorPalette();
if (st1 == null && _stretcher == null)
{
builder.Build(tile.Width, tile.Height, tile.OffsetX, tile.OffsetY, buffers[0], ref bitmap);
}
else
{
if (_stretcher != null)
{
builder.Build(tile.Width, tile.Height, tile.OffsetX, tile.OffsetY, buffers[0], _stretcher, ref bitmap);
}
else
{
builder.Build(tile.Width, tile.Height, tile.OffsetX, tile.OffsetY, buffers[0], st1.Stretcher, ref bitmap);
}
}
//
if (_colorMapTable != null)
{
ColorPalette plt = BitmapBuilderFactory.GetDefaultGrayColorPalette();
for (int i = 0; i < 256; i++)
{
plt.Entries[i] = Color.Black;
}
int idx = 1;
foreach (ColorMapItem <int> item in _colorMapTable.Items)
{
for (int v = item.MinValue; v < item.MaxValue; v++)
{
plt.Entries[idx] = item.Color;
}
idx++;
}
bitmap.Palette = plt;
}
}
else if (buffers.Length == 3)
{
bitmap = new Bitmap(_tileSize, _tileSize, PixelFormat.Format24bppRgb);
if (st1 == null || st2 == null || st3 == null)
{
builder.Build(tile.Width, tile.Height, tile.OffsetX, tile.OffsetY, buffers[0], buffers[1], buffers[2], ref bitmap);
}
else
{
builder.Build(tile.Width, tile.Height, tile.OffsetX, tile.OffsetY, buffers[0], buffers[1], buffers[2], st1.Stretcher, st2.Stretcher, st3.Stretcher, ref bitmap);
}
}
return(bitmap);
}
}
public Bitmap GetOverview(IRasterDataProvider dataProvider, int width, int height, int[] bands, Action <int> progress)
{
T[][] buffers = new T[bands.Length][];
T[] rowBuffer = new T[width];
GCHandle handle = GCHandle.Alloc(rowBuffer, GCHandleType.Pinned);
try
{
IntPtr rowPtr = handle.AddrOfPinnedObject();
int offset = 0;
for (int b = 0; b < bands.Length; b++, offset += height)
{
buffers[b] = ReadBandBuffer(dataProvider, rowPtr, bands[b], width, height, offset, progress);
}
//
using (IBitmapBuilder <T> builder = GetBitmapBuilder())
{
Bitmap bitmap = null;
if (buffers.Length == 1)
{
bitmap = new Bitmap(width, height, PixelFormat.Format8bppIndexed);
bitmap.Palette = BitmapBuilderFactory.GetDefaultGrayColorPalette();
if (st1 == null)
{
builder.Build(width, height, 0, 0, buffers[0], ref bitmap);
}
else
{
builder.Build(width, height, 0, 0, buffers[0], st1.Stretcher, ref bitmap);
}
}
else if (buffers.Length == 3)
{
bitmap = new Bitmap(width, height, PixelFormat.Format24bppRgb);
if (st1 == null || st2 == null || st3 == null)
{
builder.Build(width, height, 0, 0, buffers[0], buffers[1], buffers[2], ref bitmap);
}
else
{
builder.Build(width, height, 0, 0, buffers[0], buffers[1], buffers[2], st1.Stretcher, st2.Stretcher, st3.Stretcher, ref bitmap);
}
}
return(bitmap);
}
}
finally
{
handle.Free();
}
}
private void BuildOneTile(TileData redData, TileData greenData, TileData blueData, int x, int y, Rectangle rasterWindowEnvelope, Graphics g)
{
LevelId lv = _tileComputer.Levels[redData.Tile.LevelNo];
int w = redData.Tile.Width;
int h = redData.Tile.Height;
Bitmap tBitmap = new Bitmap(w, h, PixelFormat.Format24bppRgb);
using (IBitmapBuilder <byte> builder = BitmapBuilderFactory.CreateBitmapBuilderByte())
{
builder.Build(w, h, redData.Data as byte[],
greenData.Data as byte[],
blueData.Data as byte[], ref tBitmap);
}
g.DrawImage(tBitmap, x, y);
tBitmap.Dispose();
}
public static Bitmap GetBitmapUseOriginResolution(this IRasterDrawing drawing)
{
IOverviewGenerator gen = drawing.DataProviderCopy as IOverviewGenerator;
if (drawing.SelectedBandNos == null)
{
return(null);
}
Bitmap bm = null;
if (drawing.SelectedBandNos.Length == 1)
{
bm = new Bitmap(drawing.DataProviderCopy.Width, drawing.DataProviderCopy.Height, PixelFormat.Format8bppIndexed);
bm.Palette = BitmapBuilderFactory.GetDefaultGrayColorPalette();
}
else
{
try
{
bm = new Bitmap(drawing.DataProviderCopy.Width, drawing.DataProviderCopy.Height, PixelFormat.Format24bppRgb);
}
catch (Exception ex)
{
throw new Exception(string.Format("无法创建过大的Bitmap[{0}*{1}]", drawing.DataProviderCopy.Width, drawing.DataProviderCopy.Height), ex.InnerException);
}
}
string ext = Path.GetExtension(drawing.FileName).ToLower();
if (ext == ".bmp" || ext == ".png" || ext == ".jpg" || ext == ".jpeg")
{
bm = (Bitmap)Bitmap.FromFile(drawing.FileName);
}
else
{
gen.Generate(drawing.SelectedBandNos, ref bm);
}
IRgbProcessorStack stack = drawing.RgbProcessorStack;
stack.Apply(null, bm);
return(bm);
}
protected override IBitmapBuilder <double> GetBitmapBuilder()
{
return(BitmapBuilderFactory.CreateBitmapBuilderDouble());
}
protected override IBitmapBuilder <float> GetBitmapBuilder()
{
return(BitmapBuilderFactory.CreateBitmapBuilderFloat());
}
protected override IBitmapBuilder <Int64> GetBitmapBuilder()
{
return(BitmapBuilderFactory.CreateBitmapBuilderInt64());
}
protected override IBitmapBuilder <UInt32> GetBitmapBuilder()
{
return(BitmapBuilderFactory.CreateBitmapBuilderUInt32());
}
protected override IBitmapBuilder <byte> GetBitmapBuilder()
{
return(BitmapBuilderFactory.CreateBitmapBuilderByte());
}
