File:Go position, life and death, 1.svg é unha versión vectorial deste ficheiro. Debería usarse esa versión no canto desta imaxe rasterizada cando sexa de mellor calidade. File:Go position, life and death, 1.png → File:Go position, life and death, 1.svg Para obter máis información acerca de gráficos vectoriais, vaia á páxina sobre a transición a SVG en Commons. Tamén hai información sobre o soporte de MediaWiki de imaxes SVG. Noutras linguas Alemannisch ∙ العربية ∙ беларуская (тарашкевіца) ∙ български ∙ বাংলা ∙ català ∙ нохчийн ∙ čeština ∙ dansk ∙ Deutsch ∙ Ελληνικά ∙ English ∙ British English ∙ Esperanto ∙ español ∙ eesti ∙ euskara ∙ فارسی ∙ suomi ∙ français ∙ Frysk ∙ galego ∙ Alemannisch ∙ עברית ∙ hrvatski ∙ magyar ∙ հայերեն ∙ Bahasa Indonesia ∙ Ido ∙ italiano ∙ 日本語 ∙ ქართული ∙ 한국어 ∙ lietuvių ∙ македонски ∙ മലയാളം ∙ Bahasa Melayu ∙ norsk bokmål ∙ Plattdüütsch ∙ Nederlands ∙ norsk nynorsk ∙ norsk ∙ occitan ∙ polski ∙ prūsiskan ∙ português ∙ português do Brasil ∙ română ∙ русский ∙ sicilianu ∙ Scots ∙ slovenčina ∙ slovenščina ∙ српски / srpski ∙ svenska ∙ தமிழ் ∙ ไทย ∙ Türkçe ∙ татарча / tatarça ∙ українська ∙ vèneto ∙ Tiếng Việt ∙ 中文 ∙ 中文（中国大陆） ∙ 中文（简体） ∙ 中文（繁體） ∙ 中文（马来西亚） ∙ 中文（新加坡） ∙ 中文（臺灣） ∙ 中文（臺灣） ∙ +/−

 

An example of life and death. I'm quite proud of the stones in this image. The shading is done according to the Lambertian diffuse lighting model. Notice the shadows! Now that the code is figured out, it's trivial to set up other Go configurations Just ask!

To make this image, save the following Metapost program as go.mp:

scale=0.6in;   % scale is the diameter of a stone
linethickness = scale/25;
pickup pencircle scaled linethickness;
num = 150;  % Levels of shading in each stone.

color shadow;
shadow = (0.44,0.36,0.18);

lx = -0.35;
ly = 0.35;
lz = sqrt(1-lx*lx-ly*ly);
  % light source direction vector.
  % note that lz = cos(ltip).
ltheta = angle(lx, ly);
ltip = angle(lz, lx++ly);
  % the angle at which the light source is tipped.

path ellipse;
ellipse := fullcircle scaled scale xscaled lz;


% First, we draw the black stone, and a special version for the bottom row:
picture blackstone;
blackstone = currentpicture;
picture blackstoneb;
blackstoneb = currentpicture;

addto blackstone contour fullcircle scaled scale
  shifted (0.05*scale*dir(ltheta+180)) 
  withcolor shadow;
addto blackstoneb contour fullcircle scaled scale
  shifted (0.05*scale*dir(ltheta+180)) 
  withcolor shadow;
addto blackstone doublepath (0.55*scale,0)--(0,0)--(0,-0.55*scale)
  withpen currentpen;
addto blackstoneb doublepath (0.55*scale,0)--(0,0)
  withpen currentpen;
addto blackstone contour fullcircle scaled scale;
addto blackstoneb contour fullcircle scaled scale;

for ratio = 1 step -1/num until 0 :
  path ourellipse;
  ourellipse = ellipse scaled ratio
    shifted (scale*(1+-+ratio)*sind(ltip)/2, 0)
    rotated ltheta;

  addto blackstone contour ourellipse withcolor (0.7*(1+-+ratio)**2*white);
  addto blackstoneb contour ourellipse withcolor (0.7*(1+-+ratio)**2*white);
endfor;


% Next, we draw a white stone, and a special version for the bottom row:
picture whitestone;
whitestone = currentpicture;
picture whitestoneb;
whitestoneb = currentpicture;

basewhite = 0.7;
addto whitestone contour fullcircle scaled scale
  shifted (0.05*scale*dir(ltheta+180)) 
  withcolor shadow;
addto whitestoneb contour fullcircle scaled scale
  shifted (0.05*scale*dir(ltheta+180)) 
  withcolor shadow;
addto whitestone doublepath (0.55*scale,0)--(0,0)--(0,-0.55*scale)
   withpen currentpen;
addto whitestoneb doublepath (0.55*scale,0)--(0,0) withpen currentpen;
addto whitestone contour fullcircle scaled scale
   withcolor (basewhite*white);
addto whitestoneb contour fullcircle scaled scale
   withcolor (basewhite*white);

for ratio = 1 step -1/num until 0 :
  path ourellipse;
  ourellipse = ellipse scaled ratio
    shifted (scale*(1+-+ratio)*sind(ltip)/2, 0)
    rotated ltheta;

  addto whitestone contour ourellipse withcolor
    (basewhite + (1-basewhite)*((1+-+ratio)**4))*white;
  addto whitestoneb contour ourellipse withcolor
    (basewhite + (1-basewhite)*((1+-+ratio)**4))*white;
endfor;


boardwidth = 8;
boardheight = 7;
  % the lower left 8-by-7 positions of a go board.

def drawboard = 
  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-0.4)*scale);
  endfor;
  for j = 0 upto boardheight - 1 :
    draw (0,scale*j) -- ((boardwidth-0.4)*scale,scale*j);
  endfor;
enddef;

def wh(expr x, y) =
  if y = 0 :
    draw whitestoneb shifted (x*scale, y*scale);
  else :
    draw whitestone shifted (x*scale, y*scale);
  fi;
enddef;
def bl(expr x, y) =
  if y = 0 :
    draw blackstoneb shifted (x*scale, y*scale);
  else :
    draw blackstone shifted (x*scale, y*scale);
  fi;
enddef;
def lab(expr num, x, y, color) =
  draw thelabel(num, (0, 0)) scaled (0.75*scale/10pt)
    shifted (x*scale, y*scale) withcolor color;
enddef;


beginfig(1);
  drawboard;

  wh(2,5);wh(1,4);wh(1,3);bl(2,3);bl(3,3);bl(4,3);bl(1,2);wh(2,2);
  wh(3,2);bl(5,2);bl(6,2);bl(1,1);wh(4,1);

  lab("1", 1, 1, white);
endfig;

beginfig(2);
  drawboard;

  wh(2,5);wh(1,4);wh(1,3);bl(2,3);bl(3,3);bl(4,3);bl(1,2);wh(2,2);
  wh(3,2);bl(5,2);bl(6,2);bl(1,1);bl(2,1);wh(3,1);wh(4,1);wh(3,0);

  lab("2", 3, 0, black);
  lab("3", 2, 1, white);
  lab("4", 3, 1, black);
endfig;

beginfig(3);
  drawboard;

  wh(2,5);wh(1,4);wh(1,3);bl(2,3);bl(3,3);bl(4,3);wh(0,2);bl(1,2);
  wh(2,2);wh(3,2);bl(4,2);bl(5,2);bl(6,2);wh(0,1);bl(1,1);bl(2,1);
  wh(3,1);wh(4,1);bl(5,1);bl(1,0);wh(3,0);

  lab("5", 4, 2, white);
  lab("6", 0, 2, black);
  lab("7", 1, 0, white);
  lab("8", 0, 1, black);
  lab("9", 5, 1, white);
endfig;  

beginfig(4);
  drawboard;

  wh(2,5);wh(1,4);wh(0,3);wh(1,3);bl(2,3);bl(3,3);bl(4,3);wh(0,2);
  bl(1,2);wh(2,2);wh(3,2);bl(4,2);bl(5,2);bl(6,2);wh(0,1);bl(1,1);
  bl(2,1);wh(3,1);wh(4,1);bl(5,1);wh(0,0);bl(1,0);wh(3,0);bl(4,0);
  bl(5,0);

  lab("10", 0, 3, black);
  lab("11", 5, 0, white);
  lab("12", 0, 0, black);
  lab("13", 4, 0, white);
endfig;  
end;

Compile with mpost, producing go.1, go.2, go.3, and go.4. Save the following as go.tex:

\documentclass[10pt]{article}
 \usepackage{graphicx}
 \pagestyle{empty}
\begin{document}
 \includegraphics{\fig}
\end{document}

To get the font for the numbers, you have to digest Metapost's output through TeX. The following Bash command accomplishes that:

for i in 1 2 3 4; do latex "\def\fig{go.$i} \input go"; dvips go.dvi -o go.$i.ps; done

You now have go.1.ps through go.4.ps. Open in Gimp, resolution 400, "try bounding box", weak anti-aliasing. Crop at (826, 698), width = 1969, height = 1729. Save as PNG.

Eu, como posuidor dos dereitos de autor desta obra, pola presente publícoa baixo as seguintes licenzas:

Autorízase a copia, distribución e/ou modificación deste documento baixo os termos da licenza de documentación libre GNU, versión 1.2 ou calquera outra que posteriormente publique a Free Software Foundation; sen seccións invariables, textos de portada, nin textos de contraportada. Inclúese unha copia da devandita licenza na sección titulada GNU Free Documentation License.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue

	Este ficheiro está licenciado baixo a licenza Creative Commons recoñecemento compartir igual 3.0 sen adaptar.
	Vostede é libre de: compartir – copiar, distribuír e difundir a obra facer obras derivadas – adaptar a obra Baixo as seguintes condicións: recoñecemento – Debe indicar a debida atribución de autoría, fornecer unha ligazón á licenza e indicar se se realizaron cambios. Pode facer isto de calquera forma razoable, mais non nunha forma que indique que quen posúe a licenza apoia ou subscribe o seu uso da obra. compartir igual – Se altera, transforma ou amplía este contido, debe publicar as súas contribucións baixo a mesma licenza ou outra compatible á orixinal.
	A etiqueta desta licenza engadiuse a este ficheiro como parte da actualización da licenza GFDL.http://creativecommons.org/licenses/by-sa/3.0/CC BY-SA 3.0Creative Commons Attribution-Share Alike 3.0truetrue

Este ficheiro está licenciado baixo a licenza Creative Commons recoñecemento compartir igual 2.0 xenérico.

Vostede é libre de:

• compartir – copiar, distribuír e difundir a obra
• facer obras derivadas – adaptar a obra

Baixo as seguintes condicións:

• recoñecemento – Debe indicar a debida atribución de autoría, fornecer unha ligazón á licenza e indicar se se realizaron cambios. Pode facer isto de calquera forma razoable, mais non nunha forma que indique que quen posúe a licenza apoia ou subscribe o seu uso da obra.
• compartir igual – Se altera, transforma ou amplía este contido, debe publicar as súas contribucións baixo a mesma licenza ou outra compatible á orixinal.

https://creativecommons.org/licenses/by-sa/2.0CC BY-SA 2.0 Creative Commons Attribution-Share Alike 2.0 truetrue

Pode seleccionar a licenza que desexe.