682                 else dec(tmp);

   682                 else dec(tmp);

   683                 if tmp < round(dX) then tdY:= 1;

   683                 if tmp < round(dX) then tdY:= 1;

   684                 if tmp > round(dY) then tdY:= -1;

   684                 if tmp > round(dY) then tdY:= -1;

   685                 if tmp > 255 then tmp := 255;

   685                 if tmp > 255 then tmp := 255;

   686                 if tmp < 0 then tmp := 0;

   686                 if tmp < 0 then tmp := 0;

   688                 end

   688                 end

   689             end

   689             end

   690 end;

   690 end;