File talk:Blank Go board.png

Metapost script for original file

The original version of this image was created by David Benbennick using the following Metapost program:

scale=0.6in;   % scale is the diameter of a stone
linethickness = scale/20;
pickup pencircle scaled linethickness;

boardwidth = 19;
boardheight = 19;
  % a 5-by-5 positions of a go board.

beginfig(1);
  pickup pencircle scaled linethickness;

  fill unitsquare xscaled ((boardwidth+0.2)*scale)
    yscaled ((boardheight+0.2)*scale) shifted (-0.6*scale, -0.6scale)
    withcolor (0.86,0.70,0.36);
  for i = 0 upto boardwidth - 1 :
    draw (scale*i,0) -- (scale*i, (boardheight-1)*scale);
  endfor;
  for j = 0 upto boardheight - 1 :
    draw (0,scale*j) -- ((boardwidth-1)*scale,scale*j);
  endfor;

  pickup pencircle scaled (8*linethickness);
  for i = 3, 9, 15 :
    for j = 3, 9, 15 :
      draw (scale*i,scale*j);
    endfor;
  endfor;
endfig;
end;

This script can be run by first saving as "Blank_Go_board.mp", and then running the following commands:

mpost Blank_Go_board.mp
convert -density 400 Blank_Go_board.1 Blank_Go_board.pnm
pnmcrop Blank_Go_board.pnm | pnmtopng > Blank_Go_board.png.uncrush
pngcrush -reduce -brute -l 9 Blank_Go_board.png.uncrush Blank_Go_board.png

The current version of the image is regenerated from the vector version File:Blank_Go_board.svg