public static unsafe bool Read(Bitmap bitmap, out Tetromino nextPiece)
{
bool returner = false;
BitmapData bmData = bitmap.LockBits(Rectangle, ImageLockMode.ReadOnly, PixelFormat);
byte * scan0 = (byte *)bmData.Scan0.ToPointer();
nextPiece = null;
foreach (var tet in Tetrominos.Values)
{
bool goodGuess = true;
int i = 0;
foreach (int address in tet.Addresses)
{
i++;
if (scan0[address] < DigitPixels.ReadThreshold &&
scan0[address + 1] < DigitPixels.ReadThreshold &&
scan0[address + 2] < DigitPixels.ReadThreshold)
{
goodGuess = false;
break;
}
}
if (goodGuess)
{
returner = true;
nextPiece = tet;
break;
}
}
bitmap.UnlockBits(bmData);
return(returner);
}
private static void SetAddresses(Tetromino tetromino)
{
int imageWidth = Image.Width;
List <int> addresses = new List <int>();
foreach (Rectangle rect in tetromino.Rectangles)
{
int x0 = rect.X;
int y0 = rect.Y;
for (int x1 = 0; x1 < rect.Width; x1++)
{
for (int y1 = 0; y1 < rect.Width; y1++)
{
int x = x0 + x1;
int y = y0 + y1;
int address = BytesPerPixel * (x + imageWidth * y);
addresses.Add(address);
}
}
}
tetromino.Addresses = addresses.ToArray();
}