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Viewing file:     jpgraph_polar.php (22.55 KB)      -rw-r--r--

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 {
    var $angle_step=15,$angle_color='lightgray',$angle_label_color='black';
    var $angle_fontfam=FF_FONT1,$angle_fontstyle=FS_NORMAL,$angle_fontsize=10;
    var $angle_fontcolor = 'navy';
    var $gridminor_color='lightgray',$gridmajor_color='lightgray';
    var $show_minor_grid = false, $show_major_grid = true ;
    var $show_angle_mark=true, $show_angle_grid=true, $show_angle_label=true;
    var $angle_tick_len=3, $angle_tick_len2=3, $angle_tick_color='black';
    var $show_angle_tick=true;
    var $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 
bool(false)