<?php
/*=======================================================================
// File:     JPGRAPH_POLAR.PHP
// Description:    Polar plot extension for JpGraph
// Created:     2003-02-02
// Author:    Johan Persson (johanp@aditus.nu)
// Ver:        $Id: jpgraph_polar.php 488 2006-02-04 12:26:03Z ljp $
//
// Copyright (c) Aditus Consulting. All rights reserved.
//========================================================================
*/

require_once ('jpgraph_plotmark.inc.php');


require_once 
"jpgraph_log.php";


DEFINE('POLAR_360',1);
DEFINE('POLAR_180',2);

//
// Note. Don't attempt to make sense of this code.
// In order not to have to be able to inherit the scaling code
// from the main graph package we have had to make some "tricks" since
// the original scaling and axis was not designed to do what is
// required here.
// There were two option. 1: Re-implement everything and get a clean design
// and 2: do some "small" trickery and be able to inherit most of
// the functionlity from the main graph package. 
// We choose 2: here in order to save some time.
// 

//--------------------------------------------------------------------------
// class PolarPlot
//--------------------------------------------------------------------------
class PolarPlot {
    public 
$line_style='solid',$mark;
    public 
$legendcsimtarget='';
    public 
$legendcsimalt='';
    public 
$legend="";
    public 
$csimtargets=array();    // Array of targets for CSIM
    
public $csimareas="";            // Resultant CSIM area tags    
    
public $csimalts=null;            // ALT:s for corresponding target
    
public $scale=null;
    private 
$numpoints=0;
    private 
$iColor='navy',$iFillColor='';
    private 
$iLineWeight=1;
    private 
$coord=null;

    function 
PolarPlot($aData) {
    
$n count($aData);
    if( 
$n ) {
        
JpGraphError::RaiseL(17001);
//('Polar plots must have an even number of data point. Each data point is a tuple (angle,radius).');
    
}
    
$this->numpoints $n/2;
    
$this->coord $aData;
    
$this->mark = new PlotMark();
    }

    function 
SetWeight($aWeight) {
    
$this->iLineWeight $aWeight;
    }

    function 
SetColor($aColor){
    
$this->iColor $aColor;
    }

    function 
SetFillColor($aColor){
    
$this->iFillColor $aColor;
    }

    function 
Max() {
    
$m $this->coord[1];
    
$i=1;
    while( 
$i $this->numpoints ) {
        
$m max($m,$this->coord[2*$i+1]);  
        ++
$i;
    } 
    return 
$m;
    }
    
// Set href targets for CSIM    
    
function SetCSIMTargets($aTargets,$aAlts=null) {
    
$this->csimtargets=$aTargets;
    
$this->csimalts=$aAlts;        
    }
     
    
// Get all created areas
    
function GetCSIMareas() {
    return 
$this->csimareas;
    }    
    
    function 
SetLegend($aLegend,$aCSIM="",$aCSIMAlt="") {
    
$this->legend $aLegend;
    
$this->legendcsimtarget $aCSIM;
    
$this->legendcsimalt $aCSIMAlt;
    }

    
// Private methods

    
function Legend($aGraph) {
    
$color $this->iColor ;
    if( 
$this->legend != "" ) {
        if( 
$this->iFillColor!='' ) {
        
$color $this->iFillColor;
        
$aGraph->legend->Add($this->legend,$color,$this->mark,0,
                     
$this->legendcsimtarget,$this->legendcsimalt);    
        }
        else {
        
$aGraph->legend->Add($this->legend,$color,$this->mark,$this->line_style,
                     
$this->legendcsimtarget,$this->legendcsimalt);    
        }
    }
    }

    function 
Stroke($img,$scale) {

    
$i=0;
    
$p=array();
    
$this->csimareas='';
    while(
$i $this->numpoints) {
        list(
$x1,$y1) = $scale->PTranslate($this->coord[2*$i],$this->coord[2*$i+1]);
        
$p[2*$i] = $x1;
        
$p[2*$i+1] = $y1;
    
        if( isset(
$this->csimtargets[$i]) ) {
            
$this->mark->SetCSIMTarget($this->csimtargets[$i]);
            
$this->mark->SetCSIMAlt($this->csimalts[$i]);
        
$this->mark->SetCSIMAltVal($this->coord[2*$i], $this->coord[2*$i+1]);
        
$this->mark->Stroke($img,$x1,$y1);
        
$this->csimareas .= $this->mark->GetCSIMAreas();
        }
        else
        
$this->mark->Stroke($img,$x1,$y1);

        ++
$i;
    }

    if( 
$this->iFillColor != '' ) {
        
$img->SetColor($this->iFillColor);
        
$img->FilledPolygon($p);
    }
    
$img->SetLineWeight($this->iLineWeight);
    
$img->SetColor($this->iColor);
    
$img->Polygon($p,$this->iFillColor!='');
    }
}

//--------------------------------------------------------------------------
// class PolarAxis
//--------------------------------------------------------------------------
class PolarAxis extends Axis {
    private 
$angle_step=15,$angle_color='lightgray',$angle_label_color='black';
    private 
$angle_fontfam=FF_FONT1,$angle_fontstyle=FS_NORMAL,$angle_fontsize=10;
    private 
$angle_fontcolor 'navy';
    private 
$gridminor_color='lightgray',$gridmajor_color='lightgray';
    private 
$show_minor_grid false$show_major_grid true ;
    private 
$show_angle_mark=true$show_angle_grid=true$show_angle_label=true;
    private 
$angle_tick_len=3$angle_tick_len2=3$angle_tick_color='black';
    private 
$show_angle_tick=true;
    private 
$radius_tick_color='black';

    function 
PolarAxis($img,$aScale) {
    
parent::Axis($img,$aScale);
    }

    function 
ShowAngleDegreeMark($aFlg=true) {
    
$this->show_angle_mark $aFlg;
    }

    function 
SetAngleStep($aStep) {
    
$this->angle_step=$aStep;
    }

    function 
HideTicks($aFlg=true,$aAngleFlg=true) {
    
parent::HideTicks($aFlg,$aFlg);
    
$this->show_angle_tick = !$aAngleFlg;
    }

    function 
ShowAngleLabel($aFlg=true) {
    
$this->show_angle_label $aFlg;
    }

    function 
ShowGrid($aMajor=true,$aMinor=false,$aAngle=true) {
    
$this->show_minor_grid $aMinor;
    
$this->show_major_grid $aMajor;
    
$this->show_angle_grid $aAngle ;
    }

    function 
SetAngleFont($aFontFam,$aFontStyle=FS_NORMAL,$aFontSize=10) {
    
$this->angle_fontfam $aFontFam;
    
$this->angle_fontstyle $aFontStyle;
    
$this->angle_fontsize $aFontSize;
    }

    function 
SetColor($aColor,$aRadColor='',$aAngleColor='') {
    if( 
$aAngleColor == '' )
        
$aAngleColor=$aColor;
    
parent::SetColor($aColor,$aRadColor);
    
$this->angle_fontcolor $aAngleColor;
    }

    function 
SetGridColor($aMajorColor,$aMinorColor='',$aAngleColor='') {
    if( 
$aMinorColor == '' 
        
$aMinorColor $aMajorColor;
    if( 
$aAngleColor == '' 
        
$aAngleColor $aMajorColor;

    
$this->gridminor_color $aMinorColor;
    
$this->gridmajor_color $aMajorColor;
    
$this->angle_color $aAngleColor;
    }

    function 
SetTickColors($aRadColor,$aAngleColor='') {
    
$this->radius_tick_color $aRadColor;
    
$this->angle_tick_color $aAngleColor;
    }
    
    
// Private methods
    
function StrokeGrid($pos) {
    
$x round($this->img->left_margin $this->img->plotwidth/2);
    
$this->scale->ticks->Stroke($this->img,$this->scale,$pos);

    
// Stroke the minor arcs 
    
$pmin = array();
    
$p $this->scale->ticks->ticks_pos;
    
$n count($p);
    
$i 0;
    
$this->img->SetColor($this->gridminor_color);
    while( 
$i $n ) {
        
$r $p[$i]-$x+1;
        
$pmin[]=$r;
        if( 
$this->show_minor_grid ) {
        
$this->img->Circle($x,$pos,$r);
        }
        
$i++;
    }
    
    
$limit max($this->img->plotwidth,$this->img->plotheight)*1.4 ;
    while( 
$r $limit ) {
        
$off $r;
        
$i=1;
        
$r $off round($p[$i]-$x+1);
        while( 
$r $limit && $i $n ) {
        
$r $off+$p[$i]-$x;
        
$pmin[]=$r;
        if( 
$this->show_minor_grid ) {
            
$this->img->Circle($x,$pos,$r);
        }
        
$i++;
        }
    }

    
// Stroke the major arcs 
    
if( $this->show_major_grid ) {
        
// First determine how many minor step on
        // every major step. We have recorded the minor radius
        // in pmin and use these values. This is done in order
        // to avoid rounding errors if we were to recalculate the
        // different major radius.
        
$pmaj $this->scale->ticks->maj_ticks_pos;
        
$p $this->scale->ticks->ticks_pos;
        if( 
$this->scale->name == 'lin' ) {
        
$step=round(($pmaj[1] - $pmaj[0])/($p[1] - $p[0]));
        }
        else {
        
$step=9;
        }
        
$n round(count($pmin)/$step);
        
$i 0;
        
$this->img->SetColor($this->gridmajor_color);
        
$limit max($this->img->plotwidth,$this->img->plotheight)*1.4 ;
        
$off $r;
        
$i=0;
        
$r $pmin[$i*$step];
        while( 
$r $limit && $i $n ) {
        
$r $pmin[$i*$step];
        
$this->img->Circle($x,$pos,$r);
        
$i++;
        }
    }

    
// Draw angles
    
if( $this->show_angle_grid ) {
        
$this->img->SetColor($this->angle_color);
        
$d max($this->img->plotheight,$this->img->plotwidth)*1.4 ;
        
$a 0;
        
$p $this->scale->ticks->ticks_pos;
        
$start_radius $p[1]-$x;
        while( 
$a 360 ) {
        if( 
$a == 90 || $a == 270 ) {
            
// Make sure there are no rounding problem with
            // exactly vertical lines
            
$this->img->Line($x+$start_radius*cos($a/180*M_PI)+1,
                     
$pos-$start_radius*sin($a/180*M_PI),
                     
$x+$start_radius*cos($a/180*M_PI)+1,
                     
$pos-$d*sin($a/180*M_PI));
            
        }
        else {
            
$this->img->Line($x+$start_radius*cos($a/180*M_PI)+1,
                     
$pos-$start_radius*sin($a/180*M_PI),
                     
$x+$d*cos($a/180*M_PI),
                     
$pos-$d*sin($a/180*M_PI));
        }
        
$a += $this->angle_step;
        }
    }
    }

    function 
StrokeAngleLabels($pos,$type) {

    if( !
$this->show_angle_label 
        return;
    
    
$x0 round($this->img->left_margin+$this->img->plotwidth/2)+1;

    
$d max($this->img->plotwidth,$this->img->plotheight)*1.42;
    
$a $this->angle_step;
    
$t = new Text();
    
$t->SetColor($this->angle_fontcolor);
    
$t->SetFont($this->angle_fontfam,$this->angle_fontstyle,$this->angle_fontsize);
    
$xright $this->img->width $this->img->right_margin;
    
$ytop $this->img->top_margin;
    
$xleft $this->img->left_margin;
    
$ybottom $this->img->height $this->img->bottom_margin;
    
$ha 'left';
    
$va 'center';
    
$w $this->img->plotwidth/2;
    
$h $this->img->plotheight/2;
    
$xt $x0$yt $pos;
    
$margin=5;

    
$tl  $this->angle_tick_len // Outer len
    
$tl2 $this->angle_tick_len2 // Interior len

    
$this->img->SetColor($this->angle_tick_color);
    
$rot90 $this->img->== 90 ;

    if( 
$type == POLAR_360 ) {
        
$ca1 atan($h/$w)/M_PI*180;
        
$ca2 180-$ca1;
        
$ca3 $ca1+180;
        
$ca4 360-$ca1;
        
$end 360;
        while( 
$a $end ) {
        
$ca cos($a/180*M_PI);
        
$sa sin($a/180*M_PI);
        
$x $d*$ca;
        
$y $d*$sa;
        
$xt=1000;$yt=1000;
        if( 
$a <= $ca1 || $a >= $ca4 ) {
            
$yt $pos $w $y/$x;
            
$xt $xright $margin;
             if( 
$rot90 ) {
            
$ha 'center';
            
$va 'top';
            }
            else {
            
$ha 'left';
            
$va 'center';
            }
            
$x1=$xright-$tl2$x2=$xright+$tl;
            
$y1=$y2=$yt;
        }
        elseif( 
$a $ca1 && $a $ca2 ) { 
            
$xt $x0 $h $x/$y;
            
$yt $ytop $margin;
             if( 
$rot90 ) {
            
$ha 'left';
            
$va 'center';
            }
            else {
            
$ha 'center';
            
$va 'bottom';
            }
            
$y1=$ytop+$tl2;$y2=$ytop-$tl;
            
$x1=$x2=$xt;
        }
        elseif( 
$a >= $ca2 && $a <= $ca3 ) { 
            
$yt $pos $w $y/$x;
            
$xt $xleft $margin;
             if( 
$rot90 ) {
            
$ha 'center';
            
$va 'bottom';
            }
            else {
            
$ha 'right';
            
$va 'center';
            }
            
$x1=$xleft+$tl2;$x2=$xleft-$tl;
            
$y1=$y2=$yt;
        }
        else { 
            
$xt $x0 $h $x/$y;
            
$yt $ybottom $margin;
             if( 
$rot90 ) {
            
$ha 'right';
            
$va 'center';
            }
            else {
            
$ha 'center';
            
$va 'top';
            }
            
$y1=$ybottom-$tl2;$y2=$ybottom+$tl;
            
$x1=$x2=$xt;
        }
        if( 
$a != && $a != 180 ) {
            
$t->Align($ha,$va);
            if( 
$this->show_angle_mark )
            
$a .= '°';
            
$t->Set($a);
            
$t->Stroke($this->img,$xt,$yt);   
            if( 
$this->show_angle_tick )
            
$this->img->Line($x1,$y1,$x2,$y2);
        }
        
$a += $this->angle_step;
        }
    }
    else {
        
// POLAR_HALF
        
$ca1 atan($h/$w*2)/M_PI*180;
        
$ca2 180-$ca1;
        
$end 180;        
        while( 
$a $end ) {
        
$ca cos($a/180*M_PI);
        
$sa sin($a/180*M_PI);
        
$x $d*$ca;
        
$y $d*$sa;
        if( 
$a <= $ca1 ) {
            
$yt $pos $w $y/$x;
            
$xt $xright $margin;
             if( 
$rot90 ) {
            
$ha 'center';
            
$va 'top';
            }
            else {
            
$ha 'left';
            
$va 'center';
            }
            
$x1=$xright-$tl2$x2=$xright+$tl;
            
$y1=$y2=$yt;
        }
        elseif( 
$a $ca1 && $a $ca2 ) { 
            
$xt $x0 2*$h $x/$y;
            
$yt $ytop $margin;
             if( 
$rot90 ) {
            
$ha 'left';
            
$va 'center';
            }
            else {
            
$ha 'center';
            
$va 'bottom';
            }
            
$y1=$ytop+$tl2;$y2=$ytop-$tl;
            
$x1=$x2=$xt;
        }
        elseif( 
$a >= $ca2 ) { 
            
$yt $pos $w $y/$x;
            
$xt $xleft $margin;
             if( 
$rot90 ) {
            
$ha 'center';
            
$va 'bottom';
            }
            else {
            
$ha 'right';
            
$va 'center';
            }
            
$x1=$xleft+$tl2;$x2=$xleft-$tl;
            
$y1=$y2=$yt;
        }
        
$t->Align($ha,$va);
        if( 
$this->show_angle_mark )
            
$a .= '°';
        
$t->Set($a);
        
$t->Stroke($this->img,$xt,$yt);  
        if( 
$this->show_angle_tick )
            
$this->img->Line($x1,$y1,$x2,$y2);  
        
$a += $this->angle_step;
        }
    }
    }

    function 
Stroke($pos,$dummy=true) {

    
$this->img->SetLineWeight($this->weight);
    
$this->img->SetColor($this->color);        
    
$this->img->SetFont($this->font_family,$this->font_style,$this->font_size);
    if( !
$this->hide_line 
        
$this->img->FilledRectangle($this->img->left_margin,$pos,
             
$this->img->width-$this->img->right_margin,$pos+$this->weight-1);
    
$y=$pos+$this->img->GetFontHeight()+$this->title_margin+$this->title->margin;
    if( 
$this->title_adjust=="high" )
        
$this->title->SetPos($this->img->width-$this->img->right_margin,$y,"right","top");
    elseif( 
$this->title_adjust=="middle" || $this->title_adjust=="center" 
        
$this->title->SetPos(($this->img->width-$this->img->left_margin-
                   
$this->img->right_margin)/2+$this->img->left_margin,
                  
$y,"center","top");
    elseif(
$this->title_adjust=="low")
        
$this->title->SetPos($this->img->left_margin,$y,"left","top");
    else {    
        
JpGraphError::RaiseL(17002,$this->title_adjust);
//('Unknown alignment specified for X-axis title. ('.$this->title_adjust.')');
    
}

    
    if (!
$this->hide_labels) {
        
$this->StrokeLabels($pos,false);
    }
    
$this->img->SetColor($this->radius_tick_color);
    
$this->scale