public bool Read(Envelope evp, int width, int height, ref Bitmap bitmap, bool isReBuildBuffer)
{
int offsetX = (int)((evp.MinX - _fullEnvelope.MinX) / _geoImage.ResolutionX);
int offsetY = (int)((_fullEnvelope.MaxY - evp.MaxY) / _geoImage.ResolutionY);
int w = (int)(evp.Width / _geoImage.ResolutionX);
int h = (int)(evp.Height / _geoImage.ResolutionY);
//if(isReBuildBuffer)
BuildBuffer(width, height);
bool isOK = _geoImage.ReadBlockData(1, offsetX, offsetY, w, h, _buffer, 0, width, height);
if (isOK)
{
return((this as IRasterReader).BytesToBitmap(_buffer, width, height, _byteCountPerPixel, ref bitmap));
}
return(false);
}
