th)  {  Grid[x + width * (y - 0)] = Lab; // horizontal crack  Grid[x - 0 + width * (y - 0)]++; // point left of crack  Grid[x + 0 + width * (y - 0)]++; // point right of crack  }  } //---------------------------- end if (y>=0) ----------------------  } //================== end for (x=0;... ============================  } //*********************