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<?php

/*=======================================================================

// File:	JPGRAPH_PIE.PHP

// Description:	Pie plot extension for JpGraph

// Created: 	2001-02-14

// Author:	Johan Persson (johanp@aditus.nu)

// Ver:		$Id: jpgraph_pie.php,v 1.1 2004/06/15 10:13:19 jpm Exp $

//

// License:	This code is released under QPL

// Copyright (C) 2001,2002 Johan Persson

//========================================================================

*/

// Defines for PiePlot::SetLabelType()

DEFINE("PIE_VALUE_ABS",1);

DEFINE("PIE_VALUE_PER",0);

DEFINE("PIE_VALUE_PERCENTAGE",0);

//===================================================

// CLASS PiePlot

// Description: Draws a pie plot

//===================================================

class PiePlot {

    var $posx=0.5,$posy=0.5;

    var $radius=0.3;

    var $explode_radius=array(),$explode_all=false,$explode_r=20;

    var $labels=null, $legends=null;

    var $csimtargets=null;  // Array of targets for CSIM

    var $csimareas='';		// Generated CSIM text

    var $csimalts=null;		// ALT tags for corresponding target

    var $data=null;

    var $title;

    var $startangle=0;

    var $weight=1, $color="black";

    var $legend_margin=6,$show_labels=true;

    var $themearr = array(

	"earth" 	=> array(136,34,40,45,46,62,63,134,74,10,120,136,141,168,180,77,209,218,346,395,89,430),

	"pastel" => array(27,415,128,59,66,79,105,110,42,147,152,230,236,240,331,337,405,38),

	"water"  => array(8,370,24,40,335,56,213,237,268,14,326,387,10,388),

	"sand"   => array(27,168,34,170,19,50,65,72,131,209,46,393));

    var $theme="earth";

    var $setslicecolors=array();

    var $labeltype=0; // Default to percentage

    var $pie_border=true,$pie_interior_border=true;

    var $value;

    var $ishadowcolor='',$ishadowdrop=4;

    var $ilabelposadj=1;

    var $legendcsimtargets = array();

    var $legendcsimalts = array();

//---------------

// CONSTRUCTOR

    function PiePlot($data) {

	$this->data = array_reverse($data);

	$this->title = new Text("");

	$this->title->SetFont(FF_FONT1,FS_BOLD);

	$this->value = new DisplayValue();

	$this->value->Show();

	$this->value->SetFormat('%.1f%%');

    }

//---------------

// PUBLIC METHODS

    function SetCenter($x,$y=0.5) {

	$this->posx = $x;

	$this->posy = $y;

    }

    function SetColor($aColor) {

	$this->color = $aColor;

    }

    function SetSliceColors($aColors) {

	$this->setslicecolors = $aColors;

    }

    function SetShadow($aColor='darkgray',$aDropWidth=4) {

	$this->ishadowcolor = $aColor;

	$this->ishadowdrop = $aDropWidth;

    }

    function SetCSIMTargets($targets,$alts=null) {

	$this->csimtargets=array_reverse($targets);

	if( is_array($alts) )

	    $this->csimalts=array_reverse($alts);

    }

    function GetCSIMareas() {

	return $this->csimareas;

    }

    function AddSliceToCSIM($i,$xc,$yc,$radius,$sa,$ea) {

        //Slice number, ellipse centre (x,y), height, width, start angle, end angle

	while( $sa > 2*M_PI ) $sa = $sa - 2*M_PI;

	while( $ea > 2*M_PI ) $ea = $ea - 2*M_PI;

	$sa = 2*M_PI - $sa;

	$ea = 2*M_PI - $ea;

	//add coordinates of the centre to the map

	$coords = "$xc, $yc";

	//add coordinates of the first point on the arc to the map

	$xp = floor(($radius*cos($ea))+$xc);

	$yp = floor($yc-$radius*sin($ea));

	$coords.= ", $xp, $yp";

	//add coordinates every 0.2 radians

	$a=$ea+0.2;

	while ($a<$sa) {

	    $xp = floor($radius*cos($a)+$xc);

	    $yp = floor($yc-$radius*sin($a));

	    $coords.= ", $xp, $yp";

	    $a += 0.2;

	}

	//Add the last point on the arc

	$xp = floor($radius*cos($sa)+$xc);

	$yp = floor($yc-$radius*sin($sa));

	$coords.= ", $xp, $yp";

	if( !empty($this->csimtargets[$i]) )

	    $this->csimareas .= "<area shape=\"poly\" coords=\"$coords\" href=\"".

		$this->csimtargets[$i]."\"";

	if( !empty($this->csimalts[$i]) ) {

	    $tmp=sprintf($this->csimalts[$i],$this->data[$i]);

	    $this->csimareas .= " alt=\"$tmp\" title=\"$tmp\"";

	}

	$this->csimareas .= ">\n";

    }

    function SetTheme($aTheme) {

	if( in_array($aTheme,array_keys($this->themearr)) )

	    $this->theme = $aTheme;

	else

	    JpGraphError::Raise("PiePLot::SetTheme() Unknown theme: $aTheme");

    }

    function ExplodeSlice($e,$radius=20) {

	$this->explode_radius[$e]=$radius;

    }

    function ExplodeAll($radius=20) {

	$this->explode_all=true;

	$this->explode_r = $radius;

    }

    function Explode($aExplodeArr) {

	if( !is_array($aExplodeArr) ) {

	    JpGraphError::Raise("Argument to PiePlot::Explode() must be an array.");

	}

	$this->explode_radius = $aExplodeArr;

    }

    function SetStartAngle($aStart) {

	if( $aStart < 0 || $aStart > 360 ) {

	    JpGraphError::Raise('Slice start angle must be between 0 and 360 degrees.');

	}

	$this->startangle = 360-$aStart;

    }

    function SetFont($family,$style=FS_NORMAL,$size=10) {

		JpGraphError::Raise('PiePlot::SetFont() is deprecated. Use PiePlot->value->SetFont() instead.');

    }

    // Size in percentage

    function SetSize($aSize) {

	if( ($aSize>0 && $aSize<=0.5) || ($aSize>10 && $aSize<1000) )

	    $this->radius = $aSize;

	else

	    JpGraphError::Raise("PiePlot::SetSize() Radius for pie must either be specified as a fraction

                                [0, 0.5] of the size of the image or as an absolute size in pixels

                                in the range [10, 1000]");

    }

    function SetFontColor($aColor) {

	JpGraphError::Raise('PiePlot::SetFontColor() is deprecated. Use PiePlot->value->SetColor() instead.');

    }

    // Set label arrays

    function SetLegends($aLegend) {

	$this->legends = $aLegend;

    }

    // Set text labels for slices

    function SetLabels($aLabels,$aLblPosAdj="auto") {

	$this->labels = array_reverse($aLabels);

	$this->ilabelposadj=$aLblPosAdj;

    }

    function SetLabelPos($aLblPosAdj) {

	$this->ilabelposadj=$aLblPosAdj;

    }

    // Should we display actual value or percentage?

    function SetLabelType($t) {

	if( $t<0 || $t>1 )

	    JpGraphError::Raise("PiePlot::SetLabelType() Type for pie plots must be 0 or 1 (not $t).");

	$this->labeltype=$t;

    }

    function SetValueType($aType) {

	$this->SetLabelType($aType);

    }

    // Should the circle around a pie plot be displayed

    function ShowBorder($exterior=true,$interior=true) {

	$this->pie_border = $exterior;

	$this->pie_interior_border = $interior;

    }

    // Setup the legends

    function Legend(&$graph) {

	$colors = array_keys($graph->img->rgb->rgb_table);

   	sort($colors);

   	$ta=$this->themearr[$this->theme];

   	$n = count($this->data);

   	if( $this->setslicecolors==null )

	    $numcolors=count($ta);

   	else {

	    $this->setslicecolors = array_slice($this->setslicecolors,0,$n);

	    $numcolors=$n;

	    if( $graph->pieaa && get_class($this)==='pieplot' ) {

		$this->setslicecolors = array_reverse($this->setslicecolors);

	    }

	}

	$sum=0;

	for($i=0; $i < $n; ++$i)

	    $sum += $this->data[$i];

	// Bail out with error if the sum is 0

	if( $sum==0 )

	    JpGraphError::Raise("Illegal pie plot. Sum of all data is zero for Pie!");

	// Make sure we don't plot more values than data points

	// (in case the user added more legends than data points)

	$n = min(count($this->legends),count($this->data));

	if( $this->legends != "" )

	    $this->legends = array_reverse($this->legends);

	for( $i=$n-1; $i >= 0; --$i ) {

	    $l = $this->legends[$i];

	    // Replace possible format with actual values

	    if( $this->labeltype==0 ) {

		$l = sprintf($l,100*$this->data[$i]/$sum);

	    }

	    else {

		$l = sprintf($l,$this->data[$i]);

	    }

	    $alt = sprintf($this->csimalts[$i],$this->data[$i]);

	    if( $this->setslicecolors==null )

		$graph->legend->Add($l,$colors[$ta[$i%$numcolors]],"",0,

				    $this->csimtargets[$i],$alt);

	    else

		$graph->legend->Add($l,$this->setslicecolors[$i%$numcolors],"",0,

				    $this->csimtargets[$i],$alt);

	}

    }

    function Stroke(&$img,$aaoption=0) {

	// aaoption is used to handle antialias

	// aaoption == 0 a normal pie

	// aaoption == 1 just the body

	// aaoption == 2 just the values

	// Explode scaling. If anti anti alias we scale the image

	// twice and we also need to scale the exploding distance

	$expscale = $aaoption === 1 ? 2 : 1;

	$colors = array_keys($img->rgb->rgb_table);

   	sort($colors);

   	$ta=$this->themearr[$this->theme];

	$n = count($this->data);

   	if( $this->setslicecolors==null )

	    $numcolors=count($ta);

   	else {

	    $this->setslicecolors = array_reverse(array_slice($this->setslicecolors,0,$n));

	    $numcolors=$n;

	}

	// Draw the slices

	$sum=0;

	for($i=0; $i < $n; ++$i)

	    $sum += $this->data[$i];

	// Bail out with error if the sum is 0

	if( $sum==0 )

	    JpGraphError::Raise("Sum of all data is 0 for Pie.");

	// Set up the pie-circle

	if( $this->radius <= 1 )

	    $radius = floor($this->radius*min($img->width,$img->height));

	else {

	    $radius = $aaoption === 1 ? $this->radius*2 : $this->radius;

	}

	if( $this->posx <= 1 && $this->posx > 0 )

	    $xc = round($this->posx*$img->width);

	else

	    $xc = $this->posx ;

	if( $this->posy <= 1 && $this->posy > 0 )

	    $yc = round($this->posy*$img->height);

	else

	    $yc = $this->posy ;

	$this->startangle = $this->startangle*M_PI/180;

	$n = count($this->data);

	if( $this->explode_all )

	    for($i=0; $i < $n; ++$i)

		$this->explode_radius[$i]=$this->explode_r;

	if( $this->ishadowcolor != "" && $aaoption !== 2) {

	    $accsum=0;

	    $angle2 = $this->startangle;

	    $img->SetColor($this->ishadowcolor);

	    for($i=0; $sum>0 && $i < $n; ++$i) {

		$d = $this->data[$i];

		$angle1 = $angle2;

		$accsum += $d;

		$angle2 = $this->startangle+2*M_PI*$accsum/$sum;

		if( empty($this->explode_radius[$i]) )

		    $this->explode_radius[$i]=0;

		$la = 2*M_PI - (abs($angle2-$angle1)/2.0+$angle1);

		$xcm = $xc + $this->explode_radius[$i]*cos($la)*$expscale;

		$ycm = $yc - $this->explode_radius[$i]*sin($la)*$expscale;

		$xcm += $this->ishadowdrop*$expscale;

		$ycm += $this->ishadowdrop*$expscale;

		$img->CakeSlice($xcm,$ycm,$radius,$radius,

				$angle1*180/M_PI,$angle2*180/M_PI,$this->ishadowcolor);

	    }

	}

	$accsum=0;

	$angle2 = $this->startangle;

	$img->SetColor($this->color);

	for($i=0; $sum>0 && $i < $n; ++$i) {

	    $d = $this->data[$i];

	    $angle1 = $angle2;

	    $accsum += $d;

	    $angle2 = $this->startangle+2*M_PI*$accsum/$sum;

	    if( $this->setslicecolors==null )

		$slicecolor=$colors[$ta[$i%$numcolors]];

	    else

		$slicecolor=$this->setslicecolors[$i%$numcolors];

	    if( $this->pie_interior_border && $aaoption===0 )

		$img->SetColor($this->color);

	    else

		$img->SetColor($slicecolor);

	    $arccolor = $this->pie_border && $aaoption===0 ? $this->color : "";

	    $this->la[$i] = 2*M_PI - (abs($angle2-$angle1)/2.0+$angle1);

	    if( empty($this->explode_radius[$i]) )

		$this->explode_radius[$i]=0;

	    $xcm = $xc + $this->explode_radius[$i]*cos($this->la[$i])*$expscale;

	    $ycm = $yc - $this->explode_radius[$i]*sin($this->la[$i])*$expscale;

	    if( $aaoption !== 2 ) {

		$img->CakeSlice($xcm,$ycm,$radius-1,$radius-1,

				$angle1*180/M_PI,$angle2*180/M_PI,$slicecolor,$arccolor);

	    }

	    if ($this->csimtargets && $aaoption !== 1 )

		$this->AddSliceToCSIM($i,$xcm,$ycm,$radius,$angle1,$angle2);

	}

	if( $this->value->show && $aaoption !== 1 ) {

	    // Format the titles for each slice

	    for( $i=0; $i < $n; ++$i) {

		if( $this->labeltype==0 )

		    if( $sum != 0 )

			$l = 100.0*$this->data[$i]/$sum;

		    else

			$l = 0.0;

		else

		    $l = $this->data[$i]*1.0;

		if( isset($this->labels[$i]) && is_string($this->labels[$i]) )

		    $this->labels[$i]=sprintf($this->labels[$i],$l);

		else

		    $this->labels[$i]=$l;

	    }

	    $this->StrokeAllLabels($img,$xc,$yc,$radius);

	}

	// Adjust title position

	if( $aaoption !== 1 ) {

	    $this->title->Pos($xc,

			  $yc-$this->title->GetFontHeight($img)-$radius-$this->title->margin,

			  "center","bottom");

	    $this->title->Stroke($img);

	}

    }

//---------------

// PRIVATE METHODS

    function StrokeAllLabels($img,$xc,$yc,$radius) {

	$n = count($this->labels);

	for($i=0; $i < $n; ++$i) {

	    $this->StrokeLabel($this->labels[$i],$img,$xc,$yc,$this->la[$i],

			       $radius + $this->explode_radius[$i]);

	}

    }

    // Position the labels of each slice

    function StrokeLabel($label,$img,$xc,$yc,$a,$r) {

	// Default value

	if( $this->ilabelposadj === 'auto' )

	    $this->ilabelposadj = 0.65;

	// We position the values diferently depending on if they are inside

	// or outside the pie

	if( $this->ilabelposadj < 1.0 ) {

	    $this->value->SetAlign('center','center');

	    $this->value->margin = 0;

	    $xt=round($this->ilabelposadj*$r*cos($a)+$xc);

	    $yt=round($yc-$this->ilabelposadj*$r*sin($a));

	    $this->value->Stroke($img,$label,$xt,$yt);

	}

	else {

	    $this->value->halign = "left";

	    $this->value->valign = "top";

	    $this->value->margin = 0;

	    // Position the axis title.

	    // dx, dy is the offset from the top left corner of the bounding box that sorrounds the text

	    // that intersects with the extension of the corresponding axis. The code looks a little

	    // bit messy but this is really the only way of having a reasonable position of the

	    // axis titles.

	    $img->SetFont($this->value->ff,$this->value->fs,$this->value->fsize);

	    $h=$img->GetTextHeight($label);

	    // For numeric values the format of the display value

	    // must be taken into account

	    if( is_numeric($label) ) {

		if( $label > 0 )

		    $w=$img->GetTextWidth(sprintf($this->value->format,$label));

		else

		    $w=$img->GetTextWidth(sprintf($this->value->negformat,$label));

	    }

	    else

		$w=$img->GetTextWidth($label);

	    if( $this->ilabelposadj > 1.0 && $this->ilabelposadj < 5.0) {

		$r *= $this->ilabelposadj;

	    }

	    $r += $img->GetFontHeight()/1.5;

	    $xt=round($r*cos($a)+$xc);

	    $yt=round($yc-$r*sin($a));

	    while( $a > 2*M_PI ) $a -= 2*M_PI;

	    if( $a>=7*M_PI/4 || $a <= M_PI/4 ) $dx=0;

	    if( $a>=M_PI/4 && $a <= 3*M_PI/4 ) $dx=($a-M_PI/4)*2/M_PI;

	    if( $a>=3*M_PI/4 && $a <= 5*M_PI/4 ) $dx=1;

	    if( $a>=5*M_PI/4 && $a <= 7*M_PI/4 ) $dx=(1-($a-M_PI*5/4)*2/M_PI);

	    if( $a>=7*M_PI/4 ) $dy=(($a-M_PI)-3*M_PI/4)*2/M_PI;

	    if( $a<=M_PI/4 ) $dy=(1-$a*2/M_PI);

	    if( $a>=M_PI/4 && $a <= 3*M_PI/4 ) $dy=1;

	    if( $a>=3*M_PI/4 && $a <= 5*M_PI/4 ) $dy=(1-($a-3*M_PI/4)*2/M_PI);

	    if( $a>=5*M_PI/4 && $a <= 7*M_PI/4 ) $dy=0;

	    $this->value->Stroke($img,$label,$xt-$dx*$w,$yt-$dy*$h);

	}

    }

} // Class

//===================================================

// CLASS PiePlotC

// Description: Same as a normal pie plot but with a

// filled circle in the center

//===================================================

class PiePlotC extends PiePlot {

    var $imidsize=0.5;		// Fraction of total width

    var $imidcolor='white';

    var $midtitle='';

    var $middlecsimtarget="",$middlecsimalt="";

    function PiePlotC($data,$aCenterTitle='') {

	parent::PiePlot($data);

	$this->midtitle = new Text();

	$this->midtitle->ParagraphAlign('center');

    }

    function SetMid($aTitle,$aColor='white',$aSize=0.5) {

	$this->midtitle->Set($aTitle);

	$this->imidsize = $aSize ;

	$this->imidcolor = $aColor ;

    }

    function SetMidTitle($aTitle) {

	$this->midtitle->Set($aTitle);

    }

    function SetMidSize($aSize) {

	$this->imidsize = $aSize ;

    }

    function SetMidColor($aColor) {

	$this->imidcolor = $aColor ;

    }

    function SetMidCSIM($aTarget,$aAlt) {

	$this->middlecsimtarget = $aTarget;

	$this->middlecsimalt = $aAlt;

    }

    function AddSliceToCSIM($i,$xc,$yc,$radius,$sa,$ea) {

        //Slice number, ellipse centre (x,y), radius, start angle, end angle

	while( $sa > 2*M_PI ) $sa = $sa - 2*M_PI;

	while( $ea > 2*M_PI ) $ea = $ea - 2*M_PI;

	$sa = 2*M_PI - $sa;

	$ea = 2*M_PI - $ea;

	// Add inner circle first point

	$xp = floor(($this->imidsize*$radius*cos($ea))+$xc);

	$yp = floor($yc-($this->imidsize*$radius*sin($ea)));

	$coords = "$xp, $yp";

	//add coordinates every 0.25 radians

	$a=$ea+0.25;

	while ($a < $sa) {

	    $xp = floor(($this->imidsize*$radius*cos($a)+$xc));

	    $yp = floor($yc-($this->imidsize*$radius*sin($a)));

	    $coords.= ", $xp, $yp";

	    $a += 0.25;

	}

	// Make sure we end at the last point

	$xp = floor(($this->imidsize*$radius*cos($sa)+$xc));

	$yp = floor($yc-($this->imidsize*$radius*sin($sa)));

	$coords.= ", $xp, $yp";

	// Straight line to outer circle

	$xp = floor($radius*cos($sa)+$xc);

	$yp = floor($yc-$radius*sin($sa));

	$coords.= ", $xp, $yp";

	//add coordinates every 0.25 radians

	$a=$sa - 0.25;

	while ($a > $ea) {

	    $xp = floor($radius*cos($a)+$xc);

	    $yp = floor($yc-$radius*sin($a));

	    $coords.= ", $xp, $yp";

	    $a -= 0.25;

	}

	//Add the last point on the arc

	$xp = floor($radius*cos($ea)+$xc);

	$yp = floor($yc-$radius*sin($ea));

	$coords.= ", $xp, $yp";

	// Close the arc

	$xp = floor(($this->imidsize*$radius*cos($ea))+$xc);

	$yp = floor($yc-($this->imidsize*$radius*sin($ea)));

	$coords .= ", $xp, $yp";

	if( !empty($this->csimtargets[$i]) )

	    $this->csimareas .= "<area shape=\"poly\" coords=\"$coords\" href=\"".

		$this->csimtargets[$i]."\"";

	if( !empty($this->csimalts[$i]) ) {

	    $tmp=sprintf($this->csimalts[$i],$this->data[$i]);

	    $this->csimareas .= " alt=\"$tmp\" title=\"$tmp\"";

	}

	$this->csimareas .= ">\n";

    }

    function Stroke($img,$aaoption=0) {

	// Stroke the pie but don't stroke values

	$tmp =  $this->value->show;

	$this->value->show = false;

	parent::Stroke($img,$aaoption);

	$this->value->show = $tmp;

 	$xc = round($this->posx*$img->width);

	$yc = round($this->posy*$img->height);

	$radius = floor($this->radius * min($img->width,$img->height)) ;

	if( $this->imidsize > 0 && $aaoption !== 2 ) {

	    if( $this->ishadowcolor != "" ) {

		$img->SetColor($this->ishadowcolor);

		$img->FilledCircle($xc+$this->ishadowdrop,$yc+$this->ishadowdrop,

				   round($radius*$this->imidsize));

	    }

	    $img->SetColor($this->imidcolor);

	    $img->FilledCircle($xc,$yc,round($radius*$this->imidsize));

	    if(  $this->pie_border && $aaoption === 0 ) {

		$img->SetColor($this->color);

		$img->Circle($xc,$yc,round($radius*$this->imidsize));

	    }

	    if( !empty($this->middlecsimtarget) )

		$this->AddMiddleCSIM($xc,$yc,round($radius*$this->imidsize));

	}

	if( $this->value->show && $aaoption !== 1) {

	    $this->StrokeAllLabels($img,$xc,$yc,$radius);

	    $this->midtitle->Pos($xc,$yc,'center','center');

	    $this->midtitle->Stroke($img);

	}

    }

    function AddMiddleCSIM($xc,$yc,$r) {

	$this->csimareas .= "<area shape=\"circle\" coords=\"$xc,$yc,$r\" href=\"".

	    $this->middlecsimtarget."\"";

	if( !empty($this->middlecsimalt) ) {

	    $tmp = $this->middlecsimalt;

	    $this->csimareas .= " alt=\"$tmp\" title=\"$tmp\"";

	}

	$this->csimareas .= ">\n";

    }

    function StrokeLabel($label,$img,$xc,$yc,$a,$r) {

	if( $this->ilabelposadj === 'auto' )

	    $this->ilabelposadj = (1-$this->imidsize)/2+$this->imidsize;

	parent::StrokeLabel($label,$img,$xc,$yc,$a,$r);

    }

}

//===================================================

// CLASS PieGraph

// Description:

//===================================================

class PieGraph extends Graph {

    var $posx, $posy, $radius;

    var $legends=array();

    var $plots=array();

    var $pieaa = false ;

//---------------

// CONSTRUCTOR

    function PieGraph($width=300,$height=200,$cachedName="",$timeout=0,$inline=1) {

	$this->Graph($width,$height,$cachedName,$timeout,$inline);

	$this->posx=$width/2;

	$this->posy=$height/2;

	$this->SetColor(array(255,255,255));

    }

//---------------

// PUBLIC METHODS

    function Add($aObj) {

	if( is_array($aObj) && count($aObj) > 0 )

	    $cl = get_class($aObj[0]);

	else

	    $cl = get_class($aObj);

	if( $cl == 'text' )

	    $this->AddText($aObj);

	else

	    $this->plots[] = $aObj;

    }

    function SetAntiAliasing($aFlg=true) {

	$this->pieaa = $aFlg;

    }

    function SetColor($c) {

	$this->SetMarginColor($c);

    }

    function DisplayCSIMAreas() {

	    $csim="";

	    foreach($this->plots as $p ) {

		$csim .= $p->GetCSIMareas();

	    }

	    //$csim.= $this->legend->GetCSIMareas();

	    if (preg_match_all("/area shape=\"(\w+)\" coords=\"([0-9\, ]+)\"/", $csim, $coords)) {

		$this->img->SetColor($this->csimcolor);

		for ($i=0; $i<count($coords[0]); $i++) {

		    if ($coords[1][$i]=="poly") {

			preg_match_all('/\s*([0-9]+)\s*,\s*([0-9]+)\s*,*/',$coords[2][$i],$pts);

			$this->img->SetStartPoint($pts[1][count($pts[0])-1],$pts[2][count($pts[0])-1]);

			for ($j=0; $j<count($pts[0]); $j++) {

			    $this->img->LineTo($pts[1][$j],$pts[2][$j]);

			}

		    } else if ($coords[1][$i]=="rect") {

			$pts = preg_split('/,/', $coords[2][$i]);

			$this->img->SetStartPoint($pts[0],$pts[1]);

			$this->img->LineTo($pts[2],$pts[1]);

			$this->img->LineTo($pts[2],$pts[3]);

			$this->img->LineTo($pts[0],$pts[3]);

			$this->img->LineTo($pts[0],$pts[1]);

		    }

		}

	    }

    }

    // Method description

    function Stroke($aStrokeFileName="") {

	// If the filename is the predefined value = '_csim_special_'

	// we assume that the call to stroke only needs to do enough

	// to correctly generate the CSIM maps.

	// We use this variable to skip things we don't strictly need

	// to do to generate the image map to improve performance

	// a best we can. Therefor you will see a lot of tests !$_csim in the

	// code below.

	$_csim = ($aStrokeFileName===_CSIM_SPECIALFILE);

	// We need to know if we have stroked the plot in the

	// GetCSIMareas. Otherwise the CSIM hasn't been generated

	// and in the case of GetCSIM called before stroke to generate

	// CSIM without storing an image to disk GetCSIM must call Stroke.

	$this->iHasStroked = true;

	$n = count($this->plots);

	if( $this->pieaa ) {

	    if( !$_csim ) {

		if( $this->background_image != "" ) {

		    $this->StrokeFrameBackground();

		}

		else {

		    $this->StrokeFrame();

		}

	    }

	    $w = $this->img->width;

	    $h = $this->img->height;

	    $oldimg = $this->img->img;

	    $this->img->CreateImgCanvas(2*$w,2*$h);

	    $this->img->SetColor( $this->margin_color );

	    $this->img->FilledRectangle(0,0,2*$w-1,2*$h-1);

	    for($i=0; $i < $n; ++$i) {

		if( $this->plots[$i]->posx > 1 )

		    $this->plots[$i]->posx *= 2 ;

		if( $this->plots[$i]->posy > 1 )

		    $this->plots[$i]->posy *= 2 ;

		$this->plots[$i]->Stroke($this->img,1);

		if( $this->plots[$i]->posx > 1 )

		    $this->plots[$i]->posx /= 2 ;

		if( $this->plots[$i]->posy > 1 )

		    $this->plots[$i]->posy /= 2 ;

	    }

	    $indent = $this->doframe ? ($this->frame_weight + ($this->doshadow ? $this->shadow_width : 0 )) : 0 ;

	    $indent += $this->framebevel ? $this->framebeveldepth + 1 : 0 ;

	    $this->img->CopyCanvasH($oldimg,$this->img->img,$indent,$indent,$indent,$indent,

				    $w-2*$indent,$h-2*$indent,2*($w-$indent),2*($h-$indent));

	    $this->img->img = $oldimg ;

	    $this->img->width = $w ;

	    $this->img->height = $h ;

	    for($i=0; $i < $n; ++$i) {

		$this->plots[$i]->Stroke($this->img,2);

		$this->plots[$i]->Legend($this);

	    }

	}

	else {

	    if( !$_csim ) {

		if( $this->background_image != "" ) {

		    $this->StrokeFrameBackground();

		}

		else {

		    $this->StrokeFrame();

		}

	    }

	    for($i=0; $i < $n; ++$i) {

		$this->plots[$i]->Stroke($this->img);

		$this->plots[$i]->Legend($this);

	    }

	}

	$this->legend->Stroke($this->img);

	$this->footer->Stroke($this->img);

	if( !$_csim ) {

	    $this->StrokeTitles();

	    // Stroke texts

	    if( $this->texts != null ) {

		$n = count($this->texts);

		for($i=0; $i < $n; ++$i ) {

		    $this->texts[$i]->Stroke($this->img);

		}

	    }

	    if( JPG_DEBUG ) {

		$this->DisplayCSIMAreas();

	    }

	    // If the filename is given as the special "__handle"

	    // then the image handler is returned and the image is NOT

	    // streamed back

	    if( $aStrokeFileName == _IMG_HANDLER ) {

		return $this->img->img;

	    }

	    else {

		// Finally stream the generated picture

		$this->cache->PutAndStream($this->img,$this->cache_name,$this->inline,

					   $aStrokeFileName);

	    }

	}

    }

} // Class

/* EOF */

?>