Method WriteFileHeader

IO/Image/vtkBMPWriter.cxx:32–83

}

void vtkBMPWriter::WriteFileHeader(ostream* file, vtkImageData*, int wExt[6])
{
  long temp;
  int width, height, dataWidth;
  int row;

  // Find the length of the rows to write.
  width = (wExt[1] - wExt[0] + 1);
  height = (wExt[3] - wExt[2] + 1);

  dataWidth = ((width * 3 + 3) / 4) * 4;

  // spit out the BMP header
  file->put((char)66);
  file->put((char)77);
  temp = (long)(dataWidth * height) + 54L;
  file->put((char)(temp % 256));
  file->put((char)((temp % 65536L) / 256));
  file->put((char)(temp / 65536L));
  for (row = 0; row < 5; row++)
  {
    file->put((char)0);
  }
  file->put((char)54);
  file->put((char)0);
  file->put((char)0);
  file->put((char)0);

  // info header
  file->put((char)40);
  file->put((char)0);
  file->put((char)0);
  file->put((char)0);

  file->put((char)(width % 256));
  file->put((char)(width / 256));
  file->put((char)0);
  file->put((char)0);

  file->put((char)(height % 256));
  file->put((char)(height / 256));
  file->put((char)0);
  file->put((char)0);

  file->put((char)1);
  file->put((char)0);
  file->put((char)24);
  for (row = 0; row < 25; row++)
  {
    file->put((char)0);
  }
}

void vtkBMPWriter::WriteFile(ostream* file, vtkImageData* data, int extent[6], int wExtent[6])
{