//Roteer de huidige tetromino
public Tetromino Rotate()
{
Tetromino result = new Tetromino();
result.blocks = new Block[Height, Width];
result.position = position;
for (int x = 0; x < Height; x++)
for (int y = 0; y < Width; y++)
result.blocks[x, y] = blocks[y, x]; //Spiegelen in de lijn y = x
result = result.Mirror(); //Verticaal spiegelen
return result;
}