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sltxt2png.php
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sltxt2png.php
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<?php
/**
SLtxt2PNG.php -- create a PNG image from Sensei's Library diagram format
Copyright (C) 2001-2004 by
Arno Hollosi <ahollosi@xmp.net>, Morten Pahle <morten@pahle.org.uk>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program (see bottom of file); if not, write to the
Free Software Foundation, Inc., 59 Temple Place, Suite 330,
Boston, MA 02111-1307 USA
See demo function after the class definition on how to use it.
*/
/**
* The GoDiagram class
* All you need to know are the following methods and variables
*
* - create image with new GoDiagram($string) where $string contains
* the diagram in Sensei's Library diagram format. See
* http://senseis.xmp.net/?HowDiagramsWork for format info
*
* - to get the PNG image call $diagram->createPNG()
*
* - image size and width can be read from $diagram->img_width and
* $diagram->img_height
*
* - for the client side link map call $diagram->getLinkmap()
*
* - for the (escaped) title call $diagram->getTitle()
*
* - for the SGF file call $diagram->createSGF()
*
*/
class GoDiagram
{
// values extracted from the title line
var $firstColor; // 'B' or 'W'
var $coordinates; // boolean
var $boardSize; // integer
var $title; // raw text of title
var $diagram; // raw copy of diagram contents (single string)
var $rows; // normalized copy of $diagram (array of lines)
var $linkmap; // array of imagemap links (bracketlinks)
var $image; // image object of PNG graphic
// image properties
var $font; // base unit for dimensions
var $font_height;
var $font_width;
var $radius; // based on font size
var $img_width;
var $img_height;
var $offset_x;
var $offset_y;
// information about rows, columns
var $startrow;
var $startcol;
var $endrow;
var $endcol;
// wether there is a boarder at the top, bottom, left, right (boolean)
var $topborder;
var $bottomborder;
var $leftborder;
var $rightborder;
/**
* Constructor of class GoDiagram
* $diagram ... diagram string in SL's diagram format
* sets $this->diagram to NULL if invalid diagram found
*/
function &GoDiagram($diagram)
{
$content = explode("\n", $diagram);
// parse the parameters of the first line
preg_match('/^\$\$([WB])?(c)?(\d+)?(.*)/', $content[0], $match);
$this->firstColor = ($match[1] == 'W') ? 'W' : 'B';
$this->coordinates = !empty($match[2]);
$this->boardSize = empty($match[3]) ? 19 : $match[3]+0;
$this->title = trim($match[4]);
// fill diagram and linkmap variables
$this->diagram = '';
$this->linkmap = array();
for ($line = 1; $line < count($content); $line++)
{
if (preg_match('"^\$\$\s*([^[\s].*)"', $content[$line], $match))
$this->diagram .= "$match[1]\n";
// Now looking for links
if (preg_match('"^\$\$\s*\[(.*)\|(.*)\]"', $content[$line], $match))
{
$anchor = trim($match[1]);
if (preg_match('/^[a-z0-9WB@#CS]$/', $anchor))
$this->linkmap[$anchor] = trim($match[2]);
}
}
$this->_initBoardAndDimensions();
if ($this->startrow > $this->endrow // check if diagram is at least
|| $this->startcol > $this->endcol // 1x1
|| $this->endrow < 0 || $this->endcol < 0
|| $this->img_width < $this->font_width
|| $this->img_height < $this->font_height)
$this->diagram = NULL;
}
/**
* Parse diagram and calculate board dimensions
*/
function _initBoardAndDimensions()
{
// remove unnecessary chars, replace border chars
$diag = preg_replace("/[-|+]/", "%", $this->diagram);
$diag = preg_replace("/[ \t\r\$]/", '', $diag);
$diag = trim(preg_replace("/\n+/", " \n", $diag));
$this->rows = explode("\n", "$diag ");
// find borders
$this->startrow = 0;
$this->startcol = 0;
$this->endrow = count($this->rows) - 1;
// top border
if ($this->rows[0][1] == '%')
{
$this->startrow++;
$this->topborder = 1;
}
else
$this->topborder = 0;
// bottom border
if ($this->rows[$this->endrow][1] == '%')
{
$this->endrow--;
$this->bottomborder = 1;
}
else
$this->bottomborder = 0;
// left border
if ($this->rows[$this->startrow][0] == '%')
{
$this->startcol++;
$this->leftborder = 1;
}
else
$this->leftborder = 0;
// right border
$this->endcol = strlen($this->rows[$this->startrow]) - 2;
if ($this->rows[$this->endrow][$this->endcol] == '%')
{
$this->endcol--;
$this->rightborder = 1;
}
else
$this->rightborder = 0;
// init dimensions
$this->font = 4;
$this->font_height = ImageFontHeight($this->font);
$this->font_width = ImageFontWidth($this->font);
$diameter = floor(sqrt(pow($this->font_height,2)+pow($this->font_width,2)))+6;
$this->radius = $diameter/2;
$this->img_width = $diameter * (1+$this->endcol-$this->startcol) + 4;
$this->img_height = $diameter * (1+$this->endrow-$this->startrow) + 4;
$this->offset_x = 2;
$this->offset_y = 2;
// calculate image size
if ($this->coordinates)
{
if (($this->bottomborder || $this->topborder)
&& ($this->leftborder || $this->rightborder))
{
$x = $this->font_width*2+4;
$y = $this->font_height+2;
$this->img_width += $x;
$this->offset_x += $x;
$this->img_height += $y;
$this->offset_y += $y;
}
else {
// cannot determine X *and* Y coordinates (missing borders)
$this->coordinates = 0;
}
}
}
function getTitle()
{
return htmlspecialchars($this->title);
}
/**
* get HTML code for client side image map
* $URI ... URI of map
*/
function getLinkMap($mapName)
{
if (!count($this->linkmap))
return NULL;
$html .= "<map name='$mapName'>\n";
for ($ypos=$this->startrow; $ypos<=$this->endrow; $ypos++)
{
for ($xpos=$this->startcol; $xpos<=$this->endcol; $xpos++)
{
$curchar = $this->rows[$ypos][$xpos];
if (isset($this->linkmap[$curchar]))
{
list($x, $y, $xx, $yy) = $this->_getLinkArea($xpos, $ypos);
$destination = $this->linkmap[$curchar];
$title = htmlspecialchars($destination);
$html .= "<area shape='rect' coords='$x,$y,$xx,$yy' href='$destination' title='$title'>\n";
}
}
}
$html .= "</map>\n";
return $html;
}
function _getLinkArea($xpos, $ypos)
{
$x = ($xpos - $this->startcol)*($this->radius*2) + $this->offset_x;
$y = ($ypos - $this->startrow)*($this->radius*2) + $this->offset_y;
return array($x, $y, $x + $this->radius*2 - 1,
$y + $this->radius*2 - 1);
}
/**
* Creates PNG graphic based on ASCII diagram
* returns image object
*/
function &createPNG()
{
// create image
$img = ImageCreate($this->img_width, $this->img_height);
$this->image =& $img;
// set up colors
$black = ImageColorAllocate($img, 0, 0, 0);
$white = ImageColorAllocate($img, 255, 255, 255);
$red = ImageColorAllocate($img, 255, 55, 55);
$goban = ImageColorAllocate($img, 242, 176, 109);
$gobanborder = ImageColorAllocate($img, 150, 110, 65);
$gobanborder2 = ImageColorAllocate($img, 210, 145, 80);
$gobanopen = ImageColorAllocate($img, 255, 210, 140);
$link = ImageColorAllocate($img, 202, 106, 69);
// create background
ImageFill($img, 0, 0, $goban);
// draw coordinates
if ($this->coordinates)
$this->_drawCoordinates($black);
$this->_drawGobanBorder($gobanborder,$gobanborder2, $gobanopen, $white);
if ($this->firstColor == 'W')
{
$evencolour = $black;
$oddcolour = $white;
} else {
$evencolour = $white;
$oddcolour = $black;
}
// output stones, numbers etc. for each row
for ($ypos=$this->startrow; $ypos<=$this->endrow; $ypos++)
{
$img_y = ($ypos-$this->startrow)*($this->radius*2)
+ $this->radius + $this->offset_y;
// for each character in row
for ($xpos=$this->startcol; $xpos<=$this->endcol; $xpos++)
{
$img_x = ($xpos-$this->startcol)*($this->radius*2)
+ $this->radius + $this->offset_x;
$curchar = $this->rows[$ypos][$xpos];
// is this a linked area? if so, paint with link color
if (isset($this->linkmap[$curchar]))
{
list($x, $y, $xx, $yy) = $this->_getLinkArea($xpos, $ypos);
ImageFilledRectangle($img, $x, $y, $xx, $yy, $link);
}
switch ($curchar)
{
case ('X'): // Make black stone
case ('B'):
case ('#'):
$this->_drawStone($img_x, $img_y, $black, $black);
if ($curchar != 'X')
$this->_markIntersection($img_x, $img_y, $this->radius, $red, $curchar);
break;
case ('O'): // Make white stone
case ('W'):
case ('@'):
$this->_drawStone($img_x, $img_y, $black, $white);
if ($curchar != 'O')
$this->_markIntersection($img_x, $img_y, $this->radius, $red, $curchar);
break;
case ('.'): // empty intersection; check location
// (edge, corner)
case (','): // hoshi
case ('C'):
case ('S'):
$type = $this->_getIntersectionType($xpos, $ypos);
$this->_drawIntersection($img_x, $img_y, $black, $type);
if ($curchar != '.')
{
$col = ($curchar == ',') ? $black : $red;
$this->_markIntersection($img_x, $img_y, $this->radius, $col, $curchar);
}
break;
// Any other markup (including &/()! etc.)
default:
$font = $this->font;
if ($curchar % 2 == 1) // odd numbers
{
$this->_drawStone($img_x, $img_y, $black, $oddcolour);
$markupcolour = $evencolour;
}
elseif ($curchar * 2 > 0 || $curchar == '0')
{ // even numbers
$this->_drawStone($img_x, $img_y, $black, $evencolour);
$markupcolour = $oddcolour;
if ($curchar == '0')
$curchar = '10';
}
elseif (($curchar >= 'a') AND ($curchar <= 'z'))
{
$type = $this->_getIntersectionType($xpos, $ypos);
$this->_drawIntersection($img_x, $img_y, $black, $type);
$bgcol = (isset($this->linkmap[$curchar]))
? $link : $goban;
$this->_markIntersection($img_x, $img_y, $this->radius+4, $bgcol, "@");
$markupcolour = $black;
$font++;
}
else // unknown char
break;
$xoffset = (strlen($curchar)==2)
? $this->font_width : $this->font_width/2;
ImageString($img, $font, $img_x-$xoffset, $img_y-($this->font_height/2), $curchar, $markupcolour);
break;
} //switch $curchar
} //for xpos loop
} //for ypos loop
//all done
return $img;
}
/**
* $x and $y are relative to $image
* $colourring, $colourinside are stone colors (edge and body resp.)
*/
function _drawstone ($x, $y, $colourring, $colourinside)
{
$radius = $this->radius*2;
ImageArc($this->image, $x, $y, $radius, $radius , 0, 360, $colourring);
ImageFill($this->image, $x, $y, $colourinside);
}
/**
* used to draw board markup and hoshi marks.
* $x and $y are relative to $image
* $type one of W,B,C for circle or S,@,# for square
*/
function _markIntersection ($x, $y, $radius, $colour, $type)
{
switch($type)
{
case 'W':
case 'B':
case 'C':
ImageArc($this->image, $x,$y, $radius-2,$radius-2 , 0,360, $colour);
ImageArc($this->image, $x,$y, $radius-1,$radius-1 , 0,360, $colour);
ImageArc($this->image, $x,$y, $radius,$radius, 0,360, $colour);
break;
case 'S':
case '#':
case '@':
ImageFilledRectangle($this->image, $x-$radius/2+2, $y-$radius/2+2, $x+$radius/2-2, $y+$radius/2-2, $colour);
break;
case ',': // hoshi marker drawn as 3 concentric circles
ImageArc($this->image, $x, $y, 6,6, 0,360, $colour);
ImageArc($this->image, $x, $y, 5,5, 0,360, $colour);
ImageArc($this->image, $x, $y, 4,4, 0,360, $colour);
break;
}
}
/**
* $x,$y are the relative to $this->rows (0,0)=UL
* Return value one of these:
* 'M', 'U', 'L', 'R', 'B', 'UL', 'BL', 'UR', 'BR'
*/
function _getIntersectionType($x, $y)
{
$type='';
if ($this->rows[$y-1]{$x} == '%') {$type = 'U';}
if ($this->rows[$y+1]{$x} == '%') {$type .= 'B';}
if ($this->rows[$y]{$x+1} == '%') {$type .= 'R';}
if ($this->rows[$y]{$x-1} == '%') {$type .= 'L';}
return $type;
}
/**
* $x and $y are relative to image
* $type can be 'M', 'U', 'L', 'R', 'B', 'UL', 'BL', 'UR', 'BR'
*/
function _drawIntersection($x, $y, $black, $type)
{
if (strpos($type, 'U') === FALSE)
ImageLine($this->image, $x, $y-$this->radius, $x, $y, $black);
if (strpos($type, 'B') === FALSE)
ImageLine($this->image, $x, $y+$this->radius, $x, $y, $black);
if (strpos($type, 'L') === FALSE)
ImageLine($this->image, $x-$this->radius, $y, $x, $y, $black);
if (strpos($type, 'R') === FALSE)
ImageLine($this->image, $x+$this->radius, $y, $x, $y, $black);
// linear board?
if ((strpos($type, 'UB') !== FALSE) || (strpos($type, 'LR') !== FALSE))
$this->_markIntersection($x, $y, $this->radius, $black, ',');
}
function _drawCoordinates($color)
{
$coordchar =
'ABCDEFGHJKLMNOPQRSTUVWXYZabcdefghjklmnopqrstuvwxyz123456789';
if ($this->bottomborder)
{
$coordy = $this->endrow - $this->startrow + 1;
}
elseif ($this->topborder)
{
$coordy = $this->boardSize;
}
if ($this->leftborder)
{
$coordx = 0;
}
elseif ($this->rightborder)
{
$coordx = $this->boardSize - $this->endcol - 1;
if ($coordx < 0)
$coordx = 0;
}
// coordinate calculations according to offsets and sizes in createPNG!
// see createPNG for values
$leftx = 2 + $this->font_width;
$img_y = 2 + $this->font_height+2
+ $this->radius - ($this->font_height/2);
for ($y = 0; $y <= $this->endrow-$this->startrow; $y++)
{
$xoffset = ($coordy >= 10)
? $this->font_width : $this->font_width/2;
ImageString($this->image, $this->font, $leftx-$xoffset, $img_y, "$coordy", $color);
$img_y += $this->radius*2;
$coordy--;
}
$topy = 2;
$img_x = 2 + $this->font_width*2+4
+ $this->radius - $this->font_width/2;
for ($x = 0; $x <= $this->endcol-$this->startcol; $x++)
{
ImageString($this->image, $this->font, $img_x, $topy, $coordchar[$coordx], $color);
$img_x += $this->radius*2;
$coordx++;
}
}
function _drawGobanBorder($color, $color2, $open, $white)
{
$xl1 = $xl2 = 0; // x-offset left
$xr1 = $xr2 = 0; // x-offset right
$yt1 = $yt2 = 0; // y-offset top
$yb1 = $yb2 = 0; // y-offset bottom
if ($this->topborder) { $yt1 = 2; $yt2 = 1; }
if ($this->bottomborder) { $yb1 = 2; $yb2 = 1; }
if ($this->leftborder) { $xl1 = 2; $xl2 = 1; }
if ($this->rightborder) { $xr1 = 2; $xr2 = 1; }
if ($this->topborder)
{
ImageSetPixel($this->image, 0, 0, $white);
ImageSetPixel($this->image, $this->img_width-1, 0, $white);
ImageLine($this->image, $xl1, 0, $this->img_width-1-$xr1, 0, $color);
ImageLine($this->image, $xl2, 1, $this->img_width-1-$xr2, 1, $color2);
}
else
ImageLine($this->image, 0, 0, $this->img_width-1, 0, $open);
if ($this->bottomborder)
{
ImageSetPixel($this->image, 0, $this->img_height-1, $white);
ImageSetPixel($this->image, $this->img_width-1, $this->img_height-1, $white);
ImageLine($this->image, $xl1, $this->img_height-1, $this->img_width-1-$xr1, $this->img_height-1, $color);
ImageLine($this->image, $xl2, $this->img_height-2, $this->img_width-1-$xr2, $this->img_height-2, $color2);
}
else
ImageLine($this->image, 0, $this->img_height-1, $this->img_width-1, $this->img_height-1, $open);
if ($this->leftborder)
{
ImageSetPixel($this->image, 0, 0, $white);
ImageSetPixel($this->image, 0, $this->img_height-1, $white);
ImageLine($this->image, 0, $yt1, 0, $this->img_height-1-$yb1, $color);
ImageLine($this->image, 1, $yt2, 1, $this->img_height-1-$yb2, $color2);
}
else
ImageLine($this->image, 0, 0, 0, $this->img_height-1, $open);
if ($this->rightborder)
{
ImageSetPixel($this->image, $this->img_width-1, 0, $white);
ImageSetPixel($this->image, $this->img_width-1, $this->img_height-1, $white);
ImageLine($this->image, $this->img_width-1, $yt1, $this->img_width-1, $this->img_height-1-$yb1, $color);
ImageLine($this->image, $this->img_width-2, $yt2, $this->img_width-2, $this->img_height-1-$yb2, $color2);
}
else
ImageLine($this->image, $this->img_width-1, 0, $this->img_width-1, $this->img_height-1, $open);
}
/**
* Creates SGF based on ASCII diagram and title
* returns SGF as string or FALSE (if board not a square)
*/
function createSGF()
{
// Calc size of SGF board and offset of diagram within
$sizex = $this->endcol - $this->startcol + 1;
$sizey = $this->endrow - $this->startrow + 1;
$SGFOffestX = 0;
$SGFOffestY = 0;
$heightdefined = ($this->topborder && $this->bottomborder);
$widthdefined = ($this->leftborder && $this->rightborder);
if ($heightdefined)
{
if ($widthdefined && $sizex != $sizey)
return FALSE;
if ($sizex > $sizey)
return FALSE;
$size = $sizey;
if ($this->rightborder) $SGFOffsetX = $size-$sizex;
elseif (!$this->leftborder) $SGFOffsetX = ($size-$sizex)/2;
}
elseif ($widthdefined)
{
if ($sizey > $sizex)
return FALSE;
$size = $sizex;
if ($this->bottomborder) $SGFOffsetY = $size-$sizey;
elseif (!$this->topborder) $SGFOffsetY = ($size-$sizey)/2;
}
else
{
$size = max($sizex, $sizey, $this->boardsize);
if ($this->rightborder) $SGFOffsetX = $size-$sizex;
elseif (!$this->leftborder) $SGFOffsetX = ($size-$sizex)/2;
if ($this->bottomborder) $SGFOffsetY = $size-$sizey;
elseif (!$this->topborder) $SGFOffsetY = ($size-$sizey)/2;
}
// SGF Root node string
$gamename = str_replace(']', '\]', $this->title);
$SGFString = "(;GM[1]FF[4]SZ[$size]\n\n" .
"GN[$gamename]\n" .
"AP[GoWiki by Arno & Morten]\n" .
"DT[".date("Y-m-d")."]\n" .
"PL[$this->firstColor]\n";
$AB = array();
$AW = array();
$CR = array();
$SQ = array();
$LB = array();
if ($this->firstColor == 'W') {
$oddplayer = 'W';
$evenplayer = 'B';
} else {
$oddplayer = 'B';
$evenplayer = 'W';
}
// output stones, numbers etc. for each row
for ($ypos=$this->startrow; $ypos<=$this->endrow; $ypos++)
{
// for each character in row
for ($xpos=$this->startcol; $xpos<=$this->endcol; $xpos++)
{
$curchar = $this->rows[$ypos]{$xpos};
$position = chr(97-$this->startcol+$xpos+$SGFOffsetX) .
chr(97-$this->startrow+$ypos+$SGFOffsetY);
if ($curchar == 'X' || $curchar == 'B' || $curchar == '#')
$AB[] = $position; // Add black stone
if ($curchar == 'O' || $curchar == 'W' || $curchar == '@')
$AW[] = $position; // Add white stone
if ($curchar == 'B' || $curchar == 'W' || $curchar == 'C')
$CR[] = $position; // Add circle markup
if ($curchar == '#' || $curchar == '@' || $curchar == 'S')
$SQ[] = $position; // Add circle markup
// other markup
if ($curchar % 2 == 1) // odd numbers (moves)
{
$Moves[$curchar][1] = $position;
$Moves[$curchar][2] = $oddplayer;
}
elseif ($curchar*2 > 0 || $curchar == '0') // even num (moves)
{
if ($curchar == '0')
$curchar = '10';
$Moves[$curchar][1] = $position;
$Moves[$curchar][2] = $evenplayer;
}
elseif (($curchar >= 'a') && ($curchar <= 'z')) // letter markup
$LB[] = "$position:$curchar";
} //for xpos loop
}//for ypos loop
// parse title for hint of more moves
if ($cnt = preg_match_all('"(\d|10) at (\d)"', $this->title, $match))
{
for ($i=0; $i < $cnt; $i++)
{
if (!isset($Moves[$match[1][$i]]) // only if not set on board
&& isset($Moves[$match[2][$i]])) // referred move must be set
{
$mvnum = $match[1][$i];
$Moves[$mvnum][1] = $Moves[$match[2][$i]][1];
$Moves[$mvnum][2] = $mvnum % 2 ? $oddplayer : $evenplayer;
}
}
}
// Build SGF string
if (count($AB)) $SGFString .= 'AB[' . join('][', $AB) . "]\n";
if (count($AW)) $SGFString .= 'AW[' . join('][', $AW) . "]\n";
$Markup = '';
if (count($CR)) $Markup = 'CR[' . join('][', $CR) . "]\n";
if (count($SQ)) $Markup .= 'SQ[' . join('][', $SQ) . "]\n";
if (count($LB)) $Markup .= 'LB[' . join('][', $LB) . "]\n";
$SGFString .= "$Markup\n";
for ($mv=1; $mv <= 10; $mv++)
{
if (isset($Moves[$mv]))
{
$SGFString .= ';' . $Moves[$mv][2] . '[' . $Moves[$mv][1] . ']';
$SGFString .= 'C['. $Moves[$mv][2] . $mv . "]\n";
}
}
if (count($Moves)) // if there are any moves, then repeat markup
$SGFString .= ";$Markup";
$SGFString .= ")\n";
return $SGFString;
}
}
/**
* Demo function generating board position of ear-reddening move
* including a link to Sensei's Library
*
* call PHP script without parameters to get PNG image
* call with sltxt2png.php?getLinkmap=1 to get client side image map
* (you may need to view the HTML source to see something)
* call with sltxt2png.php?getSGF=1 to get the SGF file of the diagram
*/
function DemoEarReddeningMove()
{
$diagramsrc = '$$B The ear-reddening move
$$ ---------------------------------------
$$ | . . . . . . . . . X O O . . . . . . . |
$$ | . . . X . . . . . X O . O . O O X . . |
$$ | . . O O . X . . O X X O O . O X . . . |
$$ | . . . , . . . . . , . X X X . , X . . |
$$ | . . . . . X . . . . X . . . . X X . . |
$$ | . . O . . . . . . . . . . . . X O O . |
$$ | . . . . . . . . . . . . . O O O X X X |
$$ | . . . . . . . . . . . . . . X O O O X |
$$ | . . . . . . . . . 1 . . X O O X X X . |
$$ | . . . , . . . . . , . . O O X , X O . |
$$ | . . O . . . . . . . . . . . O X X O . |
$$ | . . . . . . . . . . . . . . O X O X . |
$$ | . . . . . . . . . . . . O . O X O O . |
$$ | . . O . . . . . . X . X O . O X . . . |
$$ | . . . . . . X . W . . X O X O X O . . |
$$ | . . X , X . . X . , . X O O X O O . . |
$$ | . . . . . X O X O . O O X X X X O O . |
$$ | . . . . . . X O . O O . O X X . X O . |
$$ | . . . . . . . . O . . O . X . X . X . |
$$ ---------------------------------------
$$ [1|http://senseis.xmp.net/?EarReddeningMove]';
$diagram =& new GoDiagram($diagramsrc);
if ($diagram->diagram) // check that parsing was ok
{
if ($_REQUEST['getLinkmap'])
{
header('Content-type: text/plain');
print $diagram->getLinkmap('linkmap1');
}
elseif ($_REQUEST['getSGF'])
{
header('Content-type: text/plain');
print $diagram->createSGF();
}
else // create image
{
$png =& $diagram->createPNG();
Header('Content-type: image/png');
ImagePng($png); // just output the image
// see PHPDoc on how to save images
ImageDestroy($png);
}
}
}
DemoEarReddeningMove();
/**
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Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.
59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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