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<?php
/*=======================================================================
// File: JPGRAPH_PIE.PHP
// Description: Pie plot extension for JpGraph
// Created: 2001-02-14
// Ver: $Id: jpgraph_pie.php 1926 2010-01-11 16:33:07Z ljp $
//
// Copyright (c) Aditus Consulting. All rights reserved.
//========================================================================
*/
// Defines for PiePlot::SetLabelType()
define("PIE_VALUE_ABS",1);
define("PIE_VALUE_PER",0);
define("PIE_VALUE_PERCENTAGE",0);
define("PIE_VALUE_ADJPERCENTAGE",2);
define("PIE_VALUE_ADJPER",2);
//===================================================
// CLASS PiePlot
// Description: Draws a pie plot
//===================================================
class PiePlot {
public $posx=0.5,$posy=0.5;
protected $radius=0.3;
protected $explode_radius=array(),$explode_all=false,$explode_r=20;
protected $labels=null, $legends=null;
protected $csimtargets=null,$csimwintargets=null; // Array of targets for CSIM
protected $csimareas=''; // Generated CSIM text
protected $csimalts=null; // ALT tags for corresponding target
protected $data=null;
public $title;
protected $startangle=0;
protected $weight=1, $color="black";
protected $legend_margin=6,$show_labels=true;
protected $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));
protected $theme="earth";
protected $setslicecolors=array();
protected $labeltype=0; // Default to percentage
protected $pie_border=true,$pie_interior_border=true;
public $value;
protected $ishadowcolor='',$ishadowdrop=4;
protected $ilabelposadj=1;
protected $legendcsimtargets = array(),$legendcsimwintargets = array();
protected $legendcsimalts = array();
protected $adjusted_data = array();
public $guideline = null;
protected $guidelinemargin=10,$iShowGuideLineForSingle = false;
protected $iGuideLineCurve = false,$iGuideVFactor=1.4,$iGuideLineRFactor=0.8;
protected $la = array(); // Holds the exact angle for each label
//---------------
// CONSTRUCTOR
function __construct($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%%');
$this->guideline = new LineProperty();
}
//---------------
// PUBLIC METHODS
function SetCenter($x,$y=0.5) {
$this->posx = $x;
$this->posy = $y;
}
// Enable guideline and set drwaing policy
function SetGuideLines($aFlg=true,$aCurved=true,$aAlways=false) {
$this->guideline->Show($aFlg);
$this->iShowGuideLineForSingle = $aAlways;
$this->iGuideLineCurve = $aCurved;
}
// Adjuste the distance between labels and labels and pie
function SetGuideLinesAdjust($aVFactor,$aRFactor=0.8) {
$this->iGuideVFactor=$aVFactor;
$this->iGuideLineRFactor=$aRFactor;
}
function SetColor($aColor) {
$this->color = $aColor;
}
function SetSliceColors($aColors) {
$this->setslicecolors = $aColors;
}
function SetShadow($aColor='darkgray',$aDropWidth=4) {
$this->ishadowcolor = $aColor;
$this->ishadowdrop = $aDropWidth;
}
function SetCSIMTargets($aTargets,$aAlts='',$aWinTargets='') {
$this->csimtargets=array_reverse($aTargets);
if( is_array($aWinTargets) )
$this->csimwintargets=array_reverse($aWinTargets);
if( is_array($aAlts) )
$this->csimalts=array_reverse($aAlts);
}
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 - $ea;
// Special case when we have only one slice since then both start and end
// angle will be == 0
if( abs($sa - $ea) < 0.0001 ) {
$sa=2*M_PI; $ea=0;
}
//add coordinates of the centre to the map
$xc = floor($xc);$yc=floor($yc);
$coords = "$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;
// If we cross the 360-limit with a slice we need to handle
// the fact that end angle is smaller than start
if( $sa < $ea ) {
while ($a <= 2*M_PI) {
$xp = floor($radius*cos($a)+$xc);
$yp = floor($yc-$radius*sin($a));
$coords.= ", $xp, $yp";
$a += 0.2;
}
$a -= 2*M_PI;
}
while ($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]."\"";
$tmp="";
if( !empty($this->csimwintargets[$i]) ) {
$this->csimareas .= " target=\"".$this->csimwintargets[$i]."\" ";
}
if( !empty($this->csimalts[$i]) ) {
$tmp=sprintf($this->csimalts[$i],$this->data[$i]);
$this->csimareas .= " title=\"$tmp\" alt=\"$tmp\" ";
}
$this->csimareas .= " />\n";
}
}
function SetTheme($aTheme) {
if( in_array($aTheme,array_keys($this->themearr)) )
$this->theme = $aTheme;
else
JpGraphError::RaiseL(15001,$aTheme);//("PiePLot::SetTheme() Unknown theme: $aTheme");
}
function ExplodeSlice($e,$radius=20) {
if( ! is_integer($e) )
JpGraphError::RaiseL(15002);//('Argument to PiePlot::ExplodeSlice() must be an integer');
$this->explode_radius[$e]=$radius;
}
function ExplodeAll($radius=20) {
$this->explode_all=true;
$this->explode_r = $radius;
}
function Explode($aExplodeArr) {
if( !is_array($aExplodeArr) ) {
JpGraphError::RaiseL(15003);
//("Argument to PiePlot::Explode() must be an array with integer distances.");
}
$this->explode_radius = $aExplodeArr;
}
function SetStartAngle($aStart) {
if( $aStart < 0 || $aStart > 360 ) {
JpGraphError::RaiseL(15004);//('Slice start angle must be between 0 and 360 degrees.');
}
if( $aStart == 0 ) {
$this->startangle = 0;
}
else {
$this->startangle = 360-$aStart;
$this->startangle *= M_PI/180;
}
}
// Size in percentage
function SetSize($aSize) {
if( ($aSize>0 && $aSize<=0.5) || ($aSize>10 && $aSize<1000) )
$this->radius = $aSize;
else
JpGraphError::RaiseL(15006);
//("PiePlot::SetSize() Radius for pie must either be specified as a fraction [0, 0.5] of the size of the image or as an absolute size in pixels in the range [10, 1000]");
}
// Set label arrays
function SetLegends($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($aType) {
if( $aType < 0 || $aType > 2 )
JpGraphError::RaiseL(15008,$aType);
//("PiePlot::SetLabelType() Type for pie plots must be 0 or 1 (not $t).");
$this->labeltype = $aType;
}
// Deprecated.
function SetValueType($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);
if( class_exists('PiePlot3D',false) && ($this instanceof PiePlot3D) ) {
$ta = array_reverse(array_slice($ta,0,$n));
}
}
else {
$this->setslicecolors = array_slice($this->setslicecolors,0,$n);
$numcolors=count($this->setslicecolors);
if( $graph->pieaa && !($this instanceof PiePlot3D) ) {
$this->setslicecolors = array_reverse($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::RaiseL(15009);//("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 != "" ) {
$this->legends = array_reverse(array_slice($this->legends,0,$n));
}
for( $i=$n-1; $i >= 0; --$i ) {
$l = $this->legends[$i];
// Replace possible format with actual values
if( count($this->csimalts) > $i ) {
$fmt = $this->csimalts[$i];
}
else {
$fmt = "%d"; // Deafult Alt if no other has been specified
}
if( $this->labeltype==0 ) {
$l = sprintf($l,100*$this->data[$i]/$sum);
$alt = sprintf($fmt,$this->data[$i]);
}
elseif( $this->labeltype == 1) {
$l = sprintf($l,$this->data[$i]);
$alt = sprintf($fmt,$this->data[$i]);
}
else {
$l = sprintf($l,$this->adjusted_data[$i]);
$alt = sprintf($fmt,$this->adjusted_data[$i]);
}
if( empty($this->csimwintargets[$i]) ) {
$wintarg = '';
}
else {
$wintarg = $this->csimwintargets[$i];
}
if( $this->setslicecolors==null ) {
$graph->legend->Add($l,$colors[$ta[$i%$numcolors]],"",0,$this->csimtargets[$i],$alt,$wintarg);
}
else {
$graph->legend->Add($l,$this->setslicecolors[$i%$numcolors],"",0,$this->csimtargets[$i],$alt,$wintarg);
}
}
}
// Adjust the rounded percetage value so that the sum of
// of the pie slices are always 100%
// Using the Hare/Niemeyer method
function AdjPercentage($aData,$aPrec=0) {
$mul=100;
if( $aPrec > 0 && $aPrec < 3 ) {
if( $aPrec == 1 )
$mul=1000;
else
$mul=10000;
}
$tmp = array();
$result = array();
$quote_sum=0;
$n = count($aData) ;
for( $i=0, $sum=0; $i < $n; ++$i )
$sum+=$aData[$i];
foreach($aData as $index => $value) {
$tmp_percentage=$value/$sum*$mul;
$result[$index]=floor($tmp_percentage);
$tmp[$index]=$tmp_percentage-$result[$index];
$quote_sum+=$result[$index];
}
if( $quote_sum == $mul) {
if( $mul > 100 ) {
$tmp = $mul / 100;
for( $i=0; $i < $n; ++$i ) {
$result[$i] /= $tmp ;
}
}
return $result;
}
arsort($tmp,SORT_NUMERIC);
reset($tmp);
for($i=0; $i < $mul-$quote_sum; $i++)
{
$result[key($tmp)]++;
next($tmp);
}
if( $mul > 100 ) {
$tmp = $mul / 100;
for( $i=0; $i < $n; ++$i ) {
$result[$i] /= $tmp ;
}
}
return $result;
}
function Stroke($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 alias we scale the image
// twice and we also need to scale the exploding distance
$expscale = $aaoption === 1 ? 2 : 1;
if( $this->labeltype == 2 ) {
// Adjust the data so that it will add up to 100%
$this->adjusted_data = $this->AdjPercentage($this->data);
}
$colors = array_keys($img->rgb->rgb_table);
sort($colors);
$ta=$this->themearr[$this->theme];
$n = count($this->data);
if( $this->setslicecolors==null ) {
$numcolors=count($ta);
}
else {
// We need to create an array of colors as long as the data
// since we need to reverse it to get the colors in the right order
$numcolors=count($this->setslicecolors);
$i = 2*$numcolors;
while( $n > $i ) {
$this->setslicecolors = array_merge($this->setslicecolors,$this->setslicecolors);
$i += $n;
}
$tt = array_slice($this->setslicecolors,0,$n % $numcolors);
$this->setslicecolors = array_merge($this->setslicecolors,$tt);
$this->setslicecolors = array_reverse($this->setslicecolors);
}
// 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::RaiseL(15009);//("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 ;
}
$n = count($this->data);
if( $this->explode_all ) {
for($i=0; $i < $n; ++$i) {
$this->explode_radius[$i]=$this->explode_r;
}
}
// If we have a shadow and not just drawing the labels
if( $this->ishadowcolor != "" && $aaoption !== 2) {
$accsum=0;
$angle2 = $this->startangle;
$img->SetColor($this->ishadowcolor);
for($i=0; $sum > 0 && $i < $n; ++$i) {
$j = $n-$i-1;
$d = $this->data[$i];
$angle1 = $angle2;
$accsum += $d;
$angle2 = $this->startangle+2*M_PI*$accsum/$sum;
if( empty($this->explode_radius[$j]) ) {
$this->explode_radius[$j]=0;
}
if( $d < 0.00001 ) continue;
$la = 2*M_PI - (abs($angle2-$angle1)/2.0+$angle1);
$xcm = $xc + $this->explode_radius[$j]*cos($la)*$expscale;
$ycm = $yc - $this->explode_radius[$j]*sin($la)*$expscale;
$xcm += $this->ishadowdrop*$expscale;
$ycm += $this->ishadowdrop*$expscale;
$_sa = round($angle1*180/M_PI);
$_ea = round($angle2*180/M_PI);
// The CakeSlice method draws a full circle in case of start angle = end angle
// for pie slices we don't want this behaviour unless we only have one
// slice in the pie in case it is the wanted behaviour
if( $_ea-$_sa > 0.1 || $n==1 ) {
$img->CakeSlice($xcm,$ycm,$radius-1,$radius-1,
$angle1*180/M_PI,$angle2*180/M_PI,$this->ishadowcolor);
}
}
}
//--------------------------------------------------------------------------------
// This is the main loop to draw each cake slice
//--------------------------------------------------------------------------------
// Set up the accumulated sum, start angle for first slice and border color
$accsum=0;
$angle2 = $this->startangle;
$img->SetColor($this->color);
// Loop though all the slices if there is a pie to draw (sum>0)
// There are n slices in total
for($i=0; $sum>0 && $i < $n; ++$i) {
// $j is the actual index used for the slice
$j = $n-$i-1;
// Make sure we havea valid distance to explode the slice
if( empty($this->explode_radius[$j]) ) {
$this->explode_radius[$j]=0;
}
// The actual numeric value for the slice
$d = $this->data[$i];
$angle1 = $angle2;
// Accumlate the sum
$accsum += $d;
// The new angle when we add the "size" of this slice
// angle1 is then the start and angle2 the end of this slice
$angle2 = $this->NormAngle($this->startangle+2*M_PI*$accsum/$sum);
// We avoid some trouble by not allowing end angle to be 0, in that case
// we translate to 360
// la is used to hold the label angle, which is centered on the slice
if( $angle2 < 0.0001 && $angle1 > 0.0001 ) {
$this->la[$i] = 2*M_PI - (abs(2*M_PI-$angle1)/2.0+$angle1);
}
elseif( $angle1 > $angle2 ) {
// The case where the slice crosses the 3 a'clock line
// Remember that the slices are counted clockwise and
// labels are counted counter clockwise so we need to revert with 2 PI
$this->la[$i] = 2*M_PI-$this->NormAngle($angle1 + ((2*M_PI - $angle1)+$angle2)/2);
}
else {
$this->la[$i] = 2*M_PI - (abs($angle2-$angle1)/2.0+$angle1);
}
// Too avoid rounding problems we skip the slice if it is too small
if( $d < 0.00001 ) continue;
// If the user has specified an array of colors for each slice then use
// that a color otherwise use the theme array (ta) of colors
if( $this->setslicecolors==null ) {
$slicecolor=$colors[$ta[$i%$numcolors]];
}
else {
$slicecolor=$this->setslicecolors[$i%$numcolors];
}
// $_sa = round($angle1*180/M_PI);
// $_ea = round($angle2*180/M_PI);
// $_la = round($this->la[$i]*180/M_PI);
// echo "Slice#$i: ang1=$_sa , ang2=$_ea, la=$_la, color=$slicecolor<br>";
// If we have enabled antialias then we don't draw any border so
// make the bordedr color the same as the slice color
if( $this->pie_interior_border && $aaoption===0 ) {
$img->SetColor($this->color);
}
else {
$img->SetColor($slicecolor);
}
$arccolor = $this->pie_border && $aaoption===0 ? $this->color : "";
// Calculate the x,y coordinates for the base of this slice taking
// the exploded distance into account. Here we use the mid angle as the
// ray of extension and we have the mid angle handy as it is also the
// label angle
$xcm = $xc + $this->explode_radius[$j]*cos($this->la[$i])*$expscale;
$ycm = $yc - $this->explode_radius[$j]*sin($this->la[$i])*$expscale;
// If we are not just drawing the labels then draw this cake slice
if( $aaoption !== 2 ) {
$_sa = round($angle1*180/M_PI);
$_ea = round($angle2*180/M_PI);
$_la = round($this->la[$i]*180/M_PI);
//echo "[$i] sa=$_sa, ea=$_ea, la[$i]=$_la, (color=$slicecolor)<br>";
// The CakeSlice method draws a full circle in case of start angle = end angle
// for pie slices we want this in case the slice have a value larger than 99% of the
// total sum
if( abs($_ea-$_sa) >= 1 || $d == $sum ) {
$img->CakeSlice($xcm,$ycm,$radius-1,$radius-1,$_sa,$_ea,$slicecolor,$arccolor);
}
}
// If the CSIM is used then make sure we register a CSIM area for this slice as well
if( $this->csimtargets && $aaoption !== 1 ) {
$this->AddSliceToCSIM($i,$xcm,$ycm,$radius,$angle1,$angle2);
}
}
// Format the titles for each slice
if( $aaoption !== 2 ) {
for( $i=0; $i < $n; ++$i) {
if( $this->labeltype==0 ) {
if( $sum != 0 )
$l = 100.0*$this->data[$i]/$sum;
else
$l = 0.0;
}
elseif( $this->labeltype==1 ) {
$l = $this->data[$i]*1.0;
}
else {
$l = $this->adjusted_data[$i];
}
if( isset($this->labels[$i]) && is_string($this->labels[$i]) )
$this->labels[$i]=sprintf($this->labels[$i],$l);
else
$this->labels[$i]=$l;
}
}
if( $this->value->show && $aaoption !== 1 ) {
$this->StrokeAllLabels($img,$xc,$yc,$radius);
}
// Adjust title position
if( $aaoption !== 1 ) {
$this->title->SetPos($xc,
$yc-$this->title->GetFontHeight($img)-$radius-$this->title->margin,
"center","bottom");
$this->title->Stroke($img);
}
}
//---------------
// PRIVATE METHODS
function NormAngle($a) {
while( $a < 0 ) $a += 2*M_PI;
while( $a > 2*M_PI ) $a -= 2*M_PI;
return $a;
}
function Quadrant($a) {
$a=$this->NormAngle($a);
if( $a > 0 && $a <= M_PI/2 )
return 0;
if( $a > M_PI/2 && $a <= M_PI )
return 1;
if( $a > M_PI && $a <= 1.5*M_PI )
return 2;
if( $a > 1.5*M_PI )
return 3;
}
function StrokeGuideLabels($img,$xc,$yc,$radius) {
$n = count($this->labels);
//-----------------------------------------------------------------------
// Step 1 of the algorithm is to construct a number of clusters
// a cluster is defined as all slices within the same quadrant (almost)
// that has an angular distance less than the treshold
//-----------------------------------------------------------------------
$tresh_hold=25 * M_PI/180; // 25 degrees difference to be in a cluster
$incluster=false; // flag if we are currently in a cluster or not
$clusters = array(); // array of clusters
$cidx=-1; // running cluster index
// Go through all the labels and construct a number of clusters
for($i=0; $i < $n-1; ++$i) {
// Calc the angle distance between two consecutive slices
$a1=$this->la[$i];
$a2=$this->la[$i+1];
$q1 = $this->Quadrant($a1);
$q2 = $this->Quadrant($a2);
$diff = abs($a1-$a2);
if( $diff < $tresh_hold ) {
if( $incluster ) {
$clusters[$cidx][1]++;
// Each cluster can only cover one quadrant
// Do we cross a quadrant ( and must break the cluster)
if( $q1 != $q2 ) {
// If we cross a quadrant boundary we normally start a
// new cluster. However we need to take the 12'a clock
// and 6'a clock positions into a special consideration.
// Case 1: WE go from q=1 to q=2 if the last slice on
// the cluster for q=1 is close to 12'a clock and the
// first slice in q=0 is small we extend the previous
// cluster
if( $q1 == 1 && $q2 == 0 && $a2 > (90-15)*M_PI/180 ) {
if( $i < $n-2 ) {
$a3 = $this->la[$i+2];
// If there isn't a cluster coming up with the next-next slice
// we extend the previous cluster to cover this slice as well
if( abs($a3-$a2) >= $tresh_hold ) {
$clusters[$cidx][1]++;
$i++;
}
}
}
elseif( $q1 == 3 && $q2 == 2 && $a2 > (270-15)*M_PI/180 ) {
if( $i < $n-2 ) {
$a3 = $this->la[$i+2];
// If there isn't a cluster coming up with the next-next slice
// we extend the previous cluster to cover this slice as well
if( abs($a3-$a2) >= $tresh_hold ) {
$clusters[$cidx][1]++;
$i++;
}
}
}
if( $q1==2 && $q2==1 && $a2 > (180-15)*M_PI/180 ) {
$clusters[$cidx][1]++;
$i++;
}
$incluster = false;
}
}
elseif( $q1 == $q2) {
$incluster = true;
// Now we have a special case for quadrant 0. If we previously
// have a cluster of one in quadrant 0 we just extend that
// cluster. If we don't do this then we risk that the label
// for the cluster of one will cross the guide-line
if( $q1 == 0 && $cidx > -1 &&
$clusters[$cidx][1] == 1 &&
$this->Quadrant($this->la[$clusters[$cidx][0]]) == 0 ) {
$clusters[$cidx][1]++;
}
else {
$cidx++;
$clusters[$cidx][0] = $i;
$clusters[$cidx][1] = 1;
}
}
else {
// Create a "cluster" of one since we are just crossing
// a quadrant
$cidx++;
$clusters[$cidx][0] = $i;
$clusters[$cidx][1] = 1;
}
}
else {
if( $incluster ) {
// Add the last slice
$clusters[$cidx][1]++;
$incluster = false;
}
else { // Create a "cluster" of one
$cidx++;
$clusters[$cidx][0] = $i;
$clusters[$cidx][1] = 1;
}
}
}
// Handle the very last slice
if( $incluster ) {
$clusters[$cidx][1]++;
}
else { // Create a "cluster" of one
$cidx++;
$clusters[$cidx][0] = $i;
$clusters[$cidx][1] = 1;
}
/*
if( true ) {
// Debug printout in labels
for( $i=0; $i <= $cidx; ++$i ) {
for( $j=0; $j < $clusters[$i][1]; ++$j ) {
$a = $this->la[$clusters[$i][0]+$j];
$aa = round($a*180/M_PI);
$q = $this->Quadrant($a);
$this->labels[$clusters[$i][0]+$j]="[$q:$aa] $i:$j";
}
}
}
*/
//-----------------------------------------------------------------------
// Step 2 of the algorithm is use the clusters and draw the labels
// and guidelines
//-----------------------------------------------------------------------
// We use the font height as the base factor for how far we need to
// spread the labels in the Y-direction.
$this->value->ApplyFont($img);
$fh = $img->GetFontHeight();
$origvstep=$fh*$this->iGuideVFactor;
$this->value->SetMargin(0);
// Number of clusters found
$nc = count($clusters);
// Walk through all the clusters
for($i=0; $i < $nc; ++$i) {
// Start angle and number of slices in this cluster
$csize = $clusters[$i][1];
$a = $this->la[$clusters[$i][0]];
$q = $this->Quadrant($a);
// Now set up the start and end conditions to make sure that
// in each cluster we walk through the all the slices starting with the slice
// closest to the equator. Since all slices are numbered clockwise from "3'a clock"
// we have different conditions depending on in which quadrant the slice lies within.
if( $q == 0 ) {
$start = $csize-1; $idx = $start; $step = -1; $vstep = -$origvstep;
}
elseif( $q == 1 ) {
$start = 0; $idx = $start; $step = 1; $vstep = -$origvstep;
}
elseif( $q == 2 ) {
$start = $csize-1; $idx = $start; $step = -1; $vstep = $origvstep;
}
elseif( $q == 3 ) {
$start = 0; $idx = $start; $step = 1; $vstep = $origvstep;
}
// Walk through all slices within this cluster
for($j=0; $j < $csize; ++$j) {
// Now adjust the position of the labels in each cluster starting
// with the slice that is closest to the equator of the pie
$a = $this->la[$clusters[$i][0]+$idx];
// Guide line start in the center of the arc of the slice
$r = $radius+$this->explode_radius[$n-1-($clusters[$i][0]+$idx)];
$x = round($r*cos($a)+$xc);
$y = round($yc-$r*sin($a));
// The distance from the arc depends on chosen font and the "R-Factor"
$r += $fh*$this->iGuideLineRFactor;
// Should the labels be placed curved along the pie or in straight columns
// outside the pie?
if( $this->iGuideLineCurve )
$xt=round($r*cos($a)+$xc);
// If this is the first slice in the cluster we need some first time
// proessing
if( $idx == $start ) {
if( ! $this->iGuideLineCurve )
$xt=round($r*cos($a)+$xc);
$yt=round($yc-$r*sin($a));
// Some special consideration in case this cluster starts
// in quadrant 1 or 3 very close to the "equator" (< 20 degrees)
// and the previous clusters last slice is within the tolerance.
// In that case we add a font height to this labels Y-position
// so it doesn't collide with
// the slice in the previous cluster
$prevcluster = ($i + ($nc-1) ) % $nc;
$previdx=$clusters[$prevcluster][0]+$clusters[$prevcluster][1]-1;
if( $q == 1 && $a > 160*M_PI/180 ) {
// Get the angle for the previous clusters last slice
$diff = abs($a-$this->la[$previdx]);
if( $diff < $tresh_hold ) {
$yt -= $fh;
}
}
elseif( $q == 3 && $a > 340*M_PI/180 ) {
// We need to subtract 360 to compare angle distance between
// q=0 and q=3
$diff = abs($a-$this->la[$previdx]-360*M_PI/180);
if( $diff < $tresh_hold ) {
$yt += $fh;
}
}
}
else {
// The step is at minimum $vstep but if the slices are relatively large
// we make sure that we add at least a step that corresponds to the vertical
// distance between the centers at the arc on the slice
$prev_a = $this->la[$clusters[$i][0]+($idx-$step)];
$dy = abs($radius*(sin($a)-sin($prev_a))*1.2);
if( $vstep > 0 )
$yt += max($vstep,$dy);
else
$yt += min($vstep,-$dy);
}
$label = $this->labels[$clusters[$i][0]+$idx];
if( $csize == 1 ) {
// A "meta" cluster with only one slice
$r = $radius+$this->explode_radius[$n-1-($clusters[$i][0]+$idx)];
$rr = $r+$img->GetFontHeight()/2;
$xt=round($rr*cos($a)+$xc);
$yt=round($yc-$rr*sin($a));
$this->StrokeLabel($label,$img,$xc,$yc,$a,$r);
if( $this->iShowGuideLineForSingle )
$this->guideline->Stroke($img,$x,$y,$xt,$yt);
}
else {
$this->guideline->Stroke($img,$x,$y,$xt,$yt);
if( $q==1 || $q==2 ) {
// Left side of Pie
$this->guideline->Stroke($img,$xt,$yt,$xt-$this->guidelinemargin,$yt);
$lbladj = -$this->guidelinemargin-5;
$this->value->halign = "right";
$this->value->valign = "center";
}
else {
// Right side of pie
$this->guideline->Stroke($img,$xt,$yt,$xt+$this->guidelinemargin,$yt);
$lbladj = $this->guidelinemargin+5;
$this->value->halign = "left";
$this->value->valign = "center";
}
$this->value->Stroke($img,$label,$xt+$lbladj,$yt);
}
// Udate idx to point to next slice in the cluster to process
$idx += $step;
}
}
}
function StrokeAllLabels($img,$xc,$yc,$radius) {
// First normalize all angles for labels
$n = count($this->la);
for($i=0; $i < $n; ++$i) {
$this->la[$i] = $this->NormAngle($this->la[$i]);
}
if( $this->guideline->iShow ) {
$this->StrokeGuideLabels($img,$xc,$yc,$radius);
}
else {
$n = count($this->labels);
for($i=0; $i < $n; ++$i) {
$this->StrokeLabel($this->labels[$i],$img,$xc,$yc,
$this->la[$i],
$radius + $this->explode_radius[$n-1-$i]);
}
}
}
// Position the labels of each slice
function StrokeLabel($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.
$this->value->ApplyFont($img);
$h=$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));
// Normalize angle
while( $a < 0 ) $a += 2*M_PI;
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 {
private $imidsize=0.5; // Fraction of total width
private $imidcolor='white';
public $midtitle='';
private $middlecsimtarget='',$middlecsimwintarget='',$middlecsimalt='';
function __construct($data,$aCenterTitle='') {
parent::__construct($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,$aAlt='',$aWinTarget='') {
$this->middlecsimtarget = $aTarget;
$this->middlecsimwintarget = $aWinTarget;
$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 - $ea;
// Special case when we have only one slice since then both start and end
// angle will be == 0
if( abs($sa - $ea) < 0.0001 ) {
$sa=2*M_PI; $ea=0;
}
// 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;
// If we cross the 360-limit with a slice we need to handle
// the fact that end angle is smaller than start
if( $sa < $ea ) {
while ($a <= 2*M_PI) {
$xp = floor($radius*cos($a)+$xc);
$yp = floor($yc-$radius*sin($a));
$coords.= ", $xp, $yp";
$a += 0.25;
}
$a -= 2*M_PI;
}
while ($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($this->csimwintargets[$i]) ) {
$this->csimareas .= " target=\"".$this->csimwintargets[$i]."\" ";
}
if( !empty($this->csimalts[$i]) ) {
$tmp=sprintf($this->csimalts[$i],$this->data[$i]);
$this->csimareas .= " title=\"$tmp\" alt=\"$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);
$this->midtitle->SetPos($xc,$yc,'center','center');
$this->midtitle->Stroke($img);
}
}
function AddMiddleCSIM($xc,$yc,$r) {
$xc=round($xc);$yc=round($yc);$r=round($r);
$this->csimareas .= "<area shape=\"circle\" coords=\"$xc,$yc,$r\" href=\"".
$this->middlecsimtarget."\"";
if( !empty($this->middlecsimwintarget) ) {
$this->csimareas .= " target=\"".$this->middlecsimwintarget."\"";
}
if( !empty($this->middlecsimalt) ) {
$tmp = $this->middlecsimalt;
$this->csimareas .= " title=\"$tmp\" alt=\"$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 {
private $posx, $posy, $radius;
private $legends=array();
public $plots=array();
public $pieaa = false ;
//---------------
// CONSTRUCTOR
function __construct($width=300,$height=200,$cachedName="",$timeout=0,$inline=1) {
parent::__construct($width,$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 = $aObj[0];
else
$cl = $aObj;
if( $cl instanceof Text )
$this->AddText($aObj);
elseif( class_exists('IconPlot',false) && ($cl instanceof IconPlot) )
$this->AddIcon($aObj);
else {
if( is_array($aObj) ) {
$n = count($aObj);
for($i=0; $i < $n; ++$i ) {
$this->plots[] = $aObj[$i];
}
}
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);
$n = count($coords[0]);
for ($i=0; $i < $n; $i++) {
if ($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]);
$m = count($pts[0]);
for ($j=0; $j < $m; $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);
// If we are called the second time (perhaps the user has called GetHTMLImageMap()
// himself then the legends have alsready been populated once in order to get the
// CSIM coordinats. Since we do not want the legends to be populated a second time
// we clear the legends
$this->legend->Clear();
// 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();
$this->StrokeBackgroundGrad();
}
}
$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);
// Make all icons *2 i size since we will be scaling down the
// imahe to do the anti aliasing
$ni = count($this->iIcons);
for($i=0; $i < $ni; ++$i) {
$this->iIcons[$i]->iScale *= 2 ;
if( $this->iIcons[$i]->iX > 1 )
$this->iIcons[$i]->iX *= 2 ;
if( $this->iIcons[$i]->iY > 1 )
$this->iIcons[$i]->iY *= 2 ;
}
$this->StrokeIcons();
for($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); // Stroke labels
$this->plots[$i]->Legend($this);
}
}
else {
if( !$_csim ) {
if( $this->background_image != "" ) {
$this->StrokeFrameBackground();
}
else {
$this->StrokeFrame();
$this->StrokeBackgroundGrad();
}
}
$this->StrokeIcons();
for($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);
$this->StrokeTitles();
if( !$_csim ) {
// 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();
}
// Should we do any final image transformation
if( $this->iImgTrans ) {
if( !class_exists('ImgTrans',false) ) {
require_once('jpgraph_imgtrans.php');
//JpGraphError::Raise('In order to use image transformation you must include the file jpgraph_imgtrans.php in your script.');
}
$tform = new ImgTrans($this->img->img);
$this->img->img = $tform->Skew3D($this->iImgTransHorizon,$this->iImgTransSkewDist,
$this->iImgTransDirection,$this->iImgTransHighQ,
$this->iImgTransMinSize,$this->iImgTransFillColor,
$this->iImgTransBorder);
}
// 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 */
?>
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