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<?php
/*=======================================================================
// File: JPGRAPH_RADAR.PHP
// Description: Radar plot extension for JpGraph
// Created: 2001-02-04
// Author: Johan Persson (johanp@aditus.nu)
// Ver: $Id: jpgraph_radar.php 38 2005-06-06 10:12:12Z ljp $
//
// Copyright (c) Aditus Consulting. All rights reserved.
//========================================================================
*/
require_once('jpgraph_plotmark.inc');
class RadarLogTicks extends Ticks {
//---------------
// CONSTRUCTOR
function RadarLogTicks() {
}
//---------------
// PUBLIC METHODS
// TODO: Add Argument grid
function Stroke(&$aImg,&$grid,$aPos,$aAxisAngle,&$aScale,&$aMajPos,&$aMajLabel) {
$start = $aScale->GetMinVal();
$limit = $aScale->GetMaxVal();
$nextMajor = 10*$start;
$step = $nextMajor / 10.0;
$count=1;
$ticklen_maj=5;
$dx_maj=round(sin($aAxisAngle)*$ticklen_maj);
$dy_maj=round(cos($aAxisAngle)*$ticklen_maj);
$ticklen_min=3;
$dx_min=round(sin($aAxisAngle)*$ticklen_min);
$dy_min=round(cos($aAxisAngle)*$ticklen_min);
$aMajPos=array();
$aMajLabel=array();
if( $this->supress_first )
$aMajLabel[]="";
else
$aMajLabel[]=$start;
$yr=$aScale->RelTranslate($start);
$xt=round($yr*cos($aAxisAngle))+$aScale->scale_abs[0];
$yt=$aPos-round($yr*sin($aAxisAngle));
$aMajPos[]=$xt+2*$dx_maj;
$aMajPos[]=$yt-$aImg->GetFontheight()/2;
$grid[]=$xt;
$grid[]=$yt;
$aImg->SetLineWeight($this->weight);
for($y=$start; $y<=$limit; $y+=$step,++$count ) {
$yr=$aScale->RelTranslate($y);
$xt=round($yr*cos($aAxisAngle))+$aScale->scale_abs[0];
$yt=$aPos-round($yr*sin($aAxisAngle));
if( $count % 10 == 0 ) {
$grid[]=$xt;
$grid[]=$yt;
$aMajPos[]=$xt+2*$dx_maj;
$aMajPos[]=$yt-$aImg->GetFontheight()/2;
if( !$this->supress_tickmarks ) {
if( $this->majcolor!="" ) $aImg->PushColor($this->majcolor);
$aImg->Line($xt+$dx_maj,$yt+$dy_maj,$xt-$dx_maj,$yt-$dy_maj);
if( $this->majcolor!="" ) $aImg->PopColor();
}
if( $this->label_formfunc != "" ) {
$f=$this->label_formfunc;
$l = call_user_func($f,$nextMajor);
}
else
$l = $nextMajor;
$aMajLabel[]=$l;
$nextMajor *= 10;
$step *= 10;
$count=1;
}
else
if( !$this->supress_minor_tickmarks ) {
if( $this->mincolor!="" ) $aImg->PushColor($this->mincolor);
$aImg->Line($xt+$dx_min,$yt+$dy_min,$xt-$dx_min,$yt-$dy_min);
if( $this->mincolor!="" ) $aImg->PopColor();
}
}
}
}
class RadarLinearTicks extends LinearTicks {
//---------------
// CONSTRUCTOR
function RadarLinearTicks() {
// Empty
}
//---------------
// PUBLIC METHODS
// TODO: Add argument grid
function Stroke(&$aImg,&$grid,$aPos,$aAxisAngle,&$aScale,&$aMajPos,&$aMajLabel) {
// Prepare to draw linear ticks
$maj_step_abs = abs($aScale->scale_factor*$this->major_step);
$min_step_abs = abs($aScale->scale_factor*$this->minor_step);
$nbrmaj = floor(($aScale->world_abs_size)/$maj_step_abs);
$nbrmin = floor(($aScale->world_abs_size)/$min_step_abs);
$skip = round($nbrmin/$nbrmaj); // Don't draw minor ontop of major
// Draw major ticks
$ticklen2=$this->major_abs_size;
$dx=round(sin($aAxisAngle)*$ticklen2);
$dy=round(cos($aAxisAngle)*$ticklen2);
$label=$aScale->scale[0]+$this->major_step;
$aImg->SetLineWeight($this->weight);
for($i=1; $i<=$nbrmaj; ++$i) {
$xt=round($i*$maj_step_abs*cos($aAxisAngle))+$aScale->scale_abs[0];
$yt=$aPos-round($i*$maj_step_abs*sin($aAxisAngle));
if( $this->label_formfunc != "" ) {
$f=$this->label_formfunc;
$l = call_user_func($f,$label);
}
else
$l = $label;
$aMajLabel[]=$l;
$label += $this->major_step;
$grid[]=$xt;
$grid[]=$yt;
$aMajPos[($i-1)*2]=$xt+2*$dx;
$aMajPos[($i-1)*2+1]=$yt-$aImg->GetFontheight()/2;
if( !$this->supress_tickmarks ) {
if( $this->majcolor!="" ) $aImg->PushColor($this->majcolor);
$aImg->Line($xt+$dx,$yt+$dy,$xt-$dx,$yt-$dy);
if( $this->majcolor!="" ) $aImg->PopColor();
}
}
// Draw minor ticks
$ticklen2=$this->minor_abs_size;
$dx=round(sin($aAxisAngle)*$ticklen2);
$dy=round(cos($aAxisAngle)*$ticklen2);
if( !$this->supress_tickmarks && !$this->supress_minor_tickmarks) {
if( $this->mincolor!="" ) $aImg->PushColor($this->mincolor);
for($i=1; $i<=$nbrmin; ++$i) {
if( ($i % $skip) == 0 ) continue;
$xt=round($i*$min_step_abs*cos($aAxisAngle))+$aScale->scale_abs[0];
$yt=$aPos-round($i*$min_step_abs*sin($aAxisAngle));
$aImg->Line($xt+$dx,$yt+$dy,$xt-$dx,$yt-$dy);
}
if( $this->mincolor!="" ) $aImg->PopColor();
}
}
}
//===================================================
// CLASS RadarAxis
// Description: Implements axis for the spider graph
//===================================================
class RadarAxis extends Axis {
var $title_color="navy";
var $title=null;
//---------------
// CONSTRUCTOR
function RadarAxis(&$img,&$aScale,$color=array(0,0,0)) {
parent::Axis($img,$aScale,$color);
$this->len=$img->plotheight;
$this->title = new Text();
$this->title->SetFont(FF_FONT1,FS_BOLD);
$this->color = array(0,0,0);
}
//---------------
// PUBLIC METHODS
function SetTickLabels($l) {
$this->ticks_label = $l;
}
// Stroke the axis
// $pos = Vertical position of axis
// $aAxisAngle = Axis angle
// $grid = Returns an array with positions used to draw the grid
// $lf = Label flag, TRUE if the axis should have labels
function Stroke($pos,$aAxisAngle,&$grid,$title,$lf) {
$this->img->SetColor($this->color);
// Determine end points for the axis
$x=round($this->scale->world_abs_size*cos($aAxisAngle)+$this->scale->scale_abs[0]);
$y=round($pos-$this->scale->world_abs_size*sin($aAxisAngle));
// Draw axis
$this->img->SetColor($this->color);
$this->img->SetLineWeight($this->weight);
if( !$this->hide )
$this->img->Line($this->scale->scale_abs[0],$pos,$x,$y);
$this->scale->ticks->Stroke($this->img,$grid,$pos,$aAxisAngle,$this->scale,$majpos,$majlabel);
// Draw labels
if( $lf && !$this->hide ) {
$this->img->SetFont($this->font_family,$this->font_style,$this->font_size);
$this->img->SetTextAlign("left","top");
$this->img->SetColor($this->color);
// majpos contsins (x,y) coordinates for labels
if( ! $this->hide_labels ) {
for($i=0; $i<count($majpos)/2; ++$i) {
if( $this->ticks_label != null )
$this->img->StrokeText($majpos[$i*2],$majpos[$i*2+1],$this->ticks_label[$i]);
else
$this->img->StrokeText($majpos[$i*2],$majpos[$i*2+1],$majlabel[$i]);
}
}
}
$this->_StrokeAxisTitle($pos,$aAxisAngle,$title);
}
//---------------
// PRIVATE METHODS
function _StrokeAxisTitle($pos,$aAxisAngle,$title) {
$this->title->Set($title);
$marg=6+$this->title->margin;
$xt=round(($this->scale->world_abs_size+$marg)*cos($aAxisAngle)+$this->scale->scale_abs[0]);
$yt=round($pos-($this->scale->world_abs_size+$marg)*sin($aAxisAngle));
// 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.
$h=$this->img->GetFontHeight();
$w=$this->img->GetTextWidth($title);
while( $aAxisAngle > 2*M_PI ) $aAxisAngle -= 2*M_PI;
if( $aAxisAngle>=7*M_PI/4 || $aAxisAngle <= M_PI/4 ) $dx=0;
if( $aAxisAngle>=M_PI/4 && $aAxisAngle <= 3*M_PI/4 ) $dx=($aAxisAngle-M_PI/4)*2/M_PI;
if( $aAxisAngle>=3*M_PI/4 && $aAxisAngle <= 5*M_PI/4 ) $dx=1;
if( $aAxisAngle>=5*M_PI/4 && $aAxisAngle <= 7*M_PI/4 ) $dx=(1-($aAxisAngle-M_PI*5/4)*2/M_PI);
if( $aAxisAngle>=7*M_PI/4 ) $dy=(($aAxisAngle-M_PI)-3*M_PI/4)*2/M_PI;
if( $aAxisAngle<=M_PI/4 ) $dy=(1-$aAxisAngle*2/M_PI);
if( $aAxisAngle>=M_PI/4 && $aAxisAngle <= 3*M_PI/4 ) $dy=1;
if( $aAxisAngle>=3*M_PI/4 && $aAxisAngle <= 5*M_PI/4 ) $dy=(1-($aAxisAngle-3*M_PI/4)*2/M_PI);
if( $aAxisAngle>=5*M_PI/4 && $aAxisAngle <= 7*M_PI/4 ) $dy=0;
if( !$this->hide ) {
$this->title->Stroke($this->img,$xt-$dx*$w,$yt-$dy*$h,$title);
}
}
} // Class
//===================================================
// CLASS RadarGrid
// Description: Draws grid for the spider graph
//===================================================
class RadarGrid extends Grid {
//------------
// CONSTRUCTOR
function RadarGrid() {
}
//----------------
// PRIVATE METHODS
function Stroke(&$img,&$grid) {
if( !$this->show ) return;
$nbrticks = count($grid[0])/2;
$nbrpnts = count($grid);
$img->SetColor($this->grid_color);
$img->SetLineWeight($this->weight);
for($i=0; $i<$nbrticks; ++$i) {
for($j=0; $j<$nbrpnts; ++$j) {
$pnts[$j*2]=$grid[$j][$i*2];
$pnts[$j*2+1]=$grid[$j][$i*2+1];
}
for($k=0; $k<$nbrpnts; ++$k ){
$l=($k+1)%$nbrpnts;
if( $this->type == "solid" )
$img->Line($pnts[$k*2],$pnts[$k*2+1],$pnts[$l*2],$pnts[$l*2+1]);
elseif( $this->type == "dotted" )
$img->DashedLine($pnts[$k*2],$pnts[$k*2+1],$pnts[$l*2],$pnts[$l*2+1],1,6);
elseif( $this->type == "dashed" )
$img->DashedLine($pnts[$k*2],$pnts[$k*2+1],$pnts[$l*2],$pnts[$l*2+1],2,4);
elseif( $this->type == "longdashed" )
$img->DashedLine($pnts[$k*2],$pnts[$k*2+1],$pnts[$l*2],$pnts[$l*2+1],8,6);
}
$pnts=array();
}
}
} // Class
//===================================================
// CLASS RadarPlot
// Description: Plot a spiderplot
//===================================================
class RadarPlot {
var $data=array();
var $fill=false, $fill_color=array(200,170,180);
var $color=array(0,0,0);
var $legend="";
var $weight=1;
var $linestyle='solid';
var $mark=null;
//---------------
// CONSTRUCTOR
function RadarPlot($data) {
$this->data = $data;
$this->mark = new PlotMark();
}
//---------------
// PUBLIC METHODS
function Min() {
return Min($this->data);
}
function Max() {
return Max($this->data);
}
function SetLegend($legend) {
$this->legend=$legend;
}
function SetLineStyle($aStyle) {
$this->linestyle=$aStyle;
}
function SetLineWeight($w) {
$this->weight=$w;
}
function SetFillColor($aColor) {
$this->fill_color = $aColor;
$this->fill = true;
}
function SetFill($f=true) {
$this->fill = $f;
}
function SetColor($aColor,$aFillColor=false) {
$this->color = $aColor;
if( $aFillColor ) {
$this->SetFillColor($aFillColor);
$this->fill = true;
}
}
function GetCSIMareas() {
JpGraphError::Raise("Client side image maps not supported for RadarPlots.");
}
function Stroke(&$img, $pos, &$scale, $startangle) {
$nbrpnts = count($this->data);
$astep=2*M_PI/$nbrpnts;
$a=$startangle;
// Rotate each point to the correct axis-angle
// TODO: Update for LogScale
for($i=0; $i<$nbrpnts; ++$i) {
//$c=$this->data[$i];
$cs=$scale->RelTranslate($this->data[$i]);
$x=round($cs*cos($a)+$scale->scale_abs[0]);
$y=round($pos-$cs*sin($a));
/*
$c=log10($c);
$x=round(($c-$scale->scale[0])*$scale->scale_factor*cos($a)+$scale->scale_abs[0]);
$y=round($pos-($c-$scale->scale[0])*$scale->scale_factor*sin($a));
*/
$pnts[$i*2]=$x;
$pnts[$i*2+1]=$y;
$a += $astep;
}
if( $this->fill ) {
$img->SetColor($this->fill_color);
$img->FilledPolygon($pnts);
}
$img->SetLineWeight($this->weight);
$img->SetColor($this->color);
$img->SetLineStyle($this->linestyle);
$pnts[]=$pnts[0];
$pnts[]=$pnts[1];
$img->Polygon($pnts);
$img->SetLineStyle('solid'); // Reset line style to default
// Add plotmarks on top
if( $this->mark->show ) {
for($i=0; $i < $nbrpnts; ++$i) {
$this->mark->Stroke($img,$pnts[$i*2],$pnts[$i*2+1]);
}
}
}
//---------------
// PRIVATE METHODS
function GetCount() {
return count($this->data);
}
function Legend(&$graph) {
if( $this->legend=="" ) return;
if( $this->fill )
$graph->legend->Add($this->legend,$this->fill_color,$this->mark);
else
$graph->legend->Add($this->legend,$this->color,$this->mark);
}
} // Class
//===================================================
// CLASS RadarGraph
// Description: Main container for a spider graph
//===================================================
class RadarGraph extends Graph {
var $posx;
var $posy;
var $len;
var $plots=null, $axis_title=null;
var $grid,$axis=null;
//---------------
// CONSTRUCTOR
function RadarGraph($width=300,$height=200,$cachedName="",$timeout=0,$inline=1) {
$this->Graph($width,$height,$cachedName,$timeout,$inline);
$this->posx=$width/2;
$this->posy=$height/2;
$this->len=min($width,$height)*0.35;
$this->SetColor(array(255,255,255));
$this->SetTickDensity(TICKD_NORMAL);
$this->SetScale("lin");
$this->SetGridDepth(DEPTH_FRONT);
}
//---------------
// PUBLIC METHODS
function SupressTickMarks($f=true) {
if( ERR_DEPRECATED )
JpGraphError::Raise('RadarGraph::SupressTickMarks() is deprecated. Use HideTickMarks() instead.');
$this->axis->scale->ticks->SupressTickMarks($f);
}
function HideTickMarks($aFlag=true) {
$this->axis->scale->ticks->SupressTickMarks($aFlag);
}
function ShowMinorTickmarks($aFlag=true) {
$this->yscale->ticks->SupressMinorTickMarks(!$aFlag);
}
function SetScale($axtype,$ymin=1,$ymax=1) {
if( $axtype != "lin" && $axtype != "log" ) {
JpGraphError::Raise("Illegal scale for spiderplot ($axtype). Must be \"lin\" or \"log\"");
}
if( $axtype=="lin" ) {
$this->yscale = & new LinearScale($ymin,$ymax);
$this->yscale->ticks = & new RadarLinearTicks();
$this->yscale->ticks->SupressMinorTickMarks();
}
elseif( $axtype=="log" ) {
$this->yscale = & new LogScale($ymin,$ymax);
$this->yscale->ticks = & new RadarLogTicks();
}
$this->axis = & new RadarAxis($this->img,$this->yscale);
$this->grid = & new RadarGrid();
}
function SetSize($aSize) {
if( $aSize<0.1 || $aSize>1 )
JpGraphError::Raise("Radar Plot size must be between 0.1 and 1. (Your value=$s)");
$this->len=min($this->img->width,$this->img->height)*$aSize/2;
}
function SetPlotSize($aSize) {
$this->SetSize($aSize);
}
function SetTickDensity($densy=TICKD_NORMAL) {
$this->ytick_factor=25;
switch( $densy ) {
case TICKD_DENSE:
$this->ytick_factor=12;
break;
case TICKD_NORMAL:
$this->ytick_factor=25;
break;
case TICKD_SPARSE:
$this->ytick_factor=40;
break;
case TICKD_VERYSPARSE:
$this->ytick_factor=70;
break;
default:
JpGraphError::Raise("RadarPlot Unsupported Tick density: $densy");
}
}
function SetPos($px,$py=0.5) {
$this->SetCenter($px,$py);
}
function SetCenter($px,$py=0.5) {
assert($px > 0 && $py > 0 );
$this->posx=$this->img->width*$px;
$this->posy=$this->img->height*$py;
}
function SetColor($c) {
$this->SetMarginColor($c);
}
function SetTitles($title) {
$this->axis_title = $title;
}
function Add(&$splot) {
$this->plots[]=$splot;
}
function GetPlotsYMinMax() {
$min=$this->plots[0]->Min();
$max=$this->plots[0]->Max();
foreach( $this->plots as $p ) {
$max=max($max,$p->Max());
$min=min($min,$p->Min());
}
if( $min < 0 )
JpGraphError::Raise("Minimum data $min (Radar plots only makes sence to use when all data points > 0)");
return array($min,$max);
}
// Stroke the Radar graph
function Stroke($aStrokeFileName="") {
// Set Y-scale
if( !$this->yscale->IsSpecified() && count($this->plots)>0 ) {
list($min,$max) = $this->GetPlotsYMinMax();
$this->yscale->AutoScale($this->img,0,$max,$this->len/$this->ytick_factor);
}
// Set start position end length of scale (in absolute pixels)
$this->yscale->SetConstants($this->posx,$this->len);
// We need as many axis as there are data points
$nbrpnts=$this->plots[0]->GetCount();
// If we have no titles just number the axis 1,2,3,...
if( $this->axis_title==null ) {
for($i=0; $i < $nbrpnts; ++$i )
$this->axis_title[$i] = $i+1;
}
elseif(count($this->axis_title)<$nbrpnts)
JpGraphError::Raise("Number of titles does not match number of points in plot.");
for($i=0; $i<count($this->plots); ++$i )
if( $nbrpnts != $this->plots[$i]->GetCount() )
JpGraphError::Raise("Each spider plot must have the same number of data points.");
if( $this->background_image != "" ) {
$this->StrokeFrameBackground();
}
else {
$this->StrokeFrame();
}
$astep=2*M_PI/$nbrpnts;
// Prepare legends
for($i=0; $i<count($this->plots); ++$i)
$this->plots[$i]->Legend($this);
$this->legend->Stroke($this->img);
$this->footer->Stroke($this->img);
if( $this->grid_depth == DEPTH_BACK ) {
// Draw axis and grid
for( $i=0,$a=M_PI/2; $i < $nbrpnts; ++$i, $a += $astep ) {
$this->axis->Stroke($this->posy,$a,$grid[$i],$this->axis_title[$i],$i==0);
}
}
// Plot points
$a=M_PI/2;
for($i=0; $i<count($this->plots); ++$i )
$this->plots[$i]->Stroke($this->img, $this->posy, $this->yscale, $a);
if( $this->grid_depth != DEPTH_BACK ) {
// Draw axis and grid
for( $i=0,$a=M_PI/2; $i < $nbrpnts; ++$i, $a += $astep ) {
$this->axis->Stroke($this->posy,$a,$grid[$i],$this->axis_title[$i],$i==0);
}
}
$this->grid->Stroke($this->img,$grid);
$this->StrokeTitles();
// Stroke texts
if( $this->texts != null ) {
foreach( $this->texts as $t)
$t->Stroke($this->img);
}
// Should we do any final image transformation
if( $this->iImgTrans ) {
if( !class_exists('ImgTrans') ) {
require_once('jpgraph_imgtrans.php');
}
$tform = new ImgTrans($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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