<?php
/*=======================================================================
// File: JPGRAPH_WINDROSE.PHP
// Description: Windrose extension for JpGraph
// Created: 2003-09-17
// Ver: $Id: jpgraph_windrose.php 1928 2010-01-11 19:56:51Z ljp $
//
// Copyright (c) Asial Corporation. All rights reserved.
//========================================================================
*/
require_once('jpgraph_glayout_vh.inc.php');
//------------------------------------------------------------------------
// Determine how many compass directions to show
//------------------------------------------------------------------------
define('WINDROSE_TYPE4',1);
define('WINDROSE_TYPE8',2);
define('WINDROSE_TYPE16',3);
define('WINDROSE_TYPEFREE',4);
//------------------------------------------------------------------------
// How should the labels for the circular grids be aligned
//------------------------------------------------------------------------
define('LBLALIGN_CENTER',1);
define('LBLALIGN_TOP',2);
//------------------------------------------------------------------------
// How should the labels around the plot be align
//------------------------------------------------------------------------
define('LBLPOSITION_CENTER',1);
define('LBLPOSITION_EDGE',2);
//------------------------------------------------------------------------
// Interpretation of ordinal values in the data
//------------------------------------------------------------------------
define('KEYENCODING_CLOCKWISE',1);
define('KEYENCODING_ANTICLOCKWISE',2);
// Internal debug flag
define('__DEBUG',false);
//===================================================
// CLASS WindrosePlotScale
//===================================================
class WindrosePlotScale {
private $iMax,$iDelta=5;
private $iNumCirc=3;
public $iMaxNum=0;
private $iLblFmt='%.0f%%';
public $iFontFamily=FF_VERDANA,$iFontStyle=FS_NORMAL,$iFontSize=10;
public $iZFontFamily=FF_ARIAL,$iZFontStyle=FS_NORMAL,$iZFontSize=10;
public $iFontColor='black',$iZFontColor='black';
private $iFontFrameColor=false, $iFontBkgColor=false;
private $iLblZeroTxt=null;
private $iLblAlign=LBLALIGN_CENTER;
public $iAngle='auto';
private $iManualScale = false;
private $iHideLabels = false;
function __construct($aData) {
$max=0;
$totlegsum = 0;
$maxnum=0;
$this->iZeroSum=0;
foreach( $aData as $idx => $legdata ) {
$legsum = array_sum($legdata);
$maxnum = max($maxnum,count($legdata)-1);
$max = max($legsum-$legdata[0],$max);
$totlegsum += $legsum;
$this->iZeroSum += $legdata[0] ;
}
if( round($totlegsum) > 100 ) {
JpGraphError::RaiseL(22001,$legsum);
//("Total percentage for all windrose legs in a windrose plot can not exceed 100% !\n(Current max is: ".$legsum.')');
}
$this->iMax = $max ;
$this->iMaxNum = $maxnum;
$this->iNumCirc = $this->GetNumCirc();
$this->iMaxVal = $this->iNumCirc * $this->iDelta ;
}
// Return number of grid circles
function GetNumCirc() {
// Never return less than 1 circles
$num = ceil($this->iMax / $this->iDelta);
return max(1,$num) ;
}
function SetMaxValue($aMax) {
$this->iMax = $aMax;
$this->iNumCirc = $this->GetNumCirc();
$this->iMaxVal = $this->iNumCirc * $this->iDelta ;
}
// Set step size for circular grid
function Set($aMax,$aDelta=null) {
if( $aDelta==null ) {
$this->SetMaxValue($aMax);
return;
}
$this->iDelta = $aDelta;
$this->iNumCirc = ceil($aMax/$aDelta); //$this->GetNumCirc();
$this->iMaxVal = $this->iNumCirc * $this->iDelta ;
$this->iMax=$aMax;
// Remember that user has specified interval so don't
// do autoscaling
$this->iManualScale = true;
}
function AutoScale($aRadius,$aMinDist=30) {
if( $this->iManualScale ) return;
// Make sure distance (in pixels) between two circles
// is never less than $aMinDist pixels
$tst = ceil($aRadius / $this->iNumCirc) ;
while( $tst <= $aMinDist && $this->iDelta < 100 ) {
$this->iDelta += 5;
$tst = ceil($aRadius / $this->GetNumCirc()) ;
}
if( $this->iDelta >= 100 ) {
JpGraphError::RaiseL(22002);//('Graph is too small to have a scale. Please make the graph larger.');
}
// If the distance is to large try with multiples of 2 instead
if( $tst > $aMinDist * 3 ) {
$this->iDelta = 2;
$tst = ceil($aRadius / $this->iNumCirc) ;
while( $tst <= $aMinDist && $this->iDelta < 100 ) {
$this->iDelta += 2;
$tst = ceil($aRadius / $this->GetNumCirc()) ;
}
if( $this->iDelta >= 100 ) {
JpGraphError::RaiseL(22002); //('Graph is too small to have a scale. Please make the graph larger.');
}
}
$this->iNumCirc = $this->GetNumCirc();
$this->iMaxVal = $this->iNumCirc * $this->iDelta ;
}
// Return max of all leg values
function GetMax() {
return $this->iMax;
}
function Hide($aFlg=true) {
$this->iHideLabels = $aFlg;
}
function SetAngle($aAngle) {
$this->iAngle = $aAngle ;
}
// Translate a Leg value to radius distance
function RelTranslate($aVal,$r,$ri) {
$tv = round($aVal/$this->iMaxVal*($r-$ri));
return $tv ;
}
function SetLabelAlign($aAlign) {
$this->iLblAlign = $aAlign ;
}
function SetLabelFormat($aFmt) {
$this->iLblFmt = $aFmt ;
}
function SetLabelFillColor($aBkgColor,$aBorderColor=false) {
$this->iFontBkgColor = $aBkgColor;
if( $aBorderColor === false ) {
$this->iFontFrameColor = $aBkgColor;
}
else {
$this->iFontFrameColor = $aBorderColor;
}
}
function SetFontColor($aColor) {
$this->iFontColor = $aColor ;
$this->iZFontColor = $aColor ;
}
function SetFont($aFontFamily,$aFontStyle=FS_NORMAL,$aFontSize=10) {
$this->iFontFamily = $aFontFamily ;
$this->iFontStyle = $aFontStyle ;
$this->iFontSize = $aFontSize ;
$this->SetZFont($aFontFamily,$aFontStyle,$aFontSize);
}
function SetZFont($aFontFamily,$aFontStyle=FS_NORMAL,$aFontSize=10) {
$this->iZFontFamily = $aFontFamily ;
$this->iZFontStyle = $aFontStyle ;
$this->iZFontSize = $aFontSize ;
}
function SetZeroLabel($aTxt) {
$this->iLblZeroTxt = $aTxt ;
}
function SetZFontColor($aColor) {
$this->iZFontColor = $aColor ;
}
function StrokeLabels($aImg,$xc,$yc,$ri,$rr) {
if( $this->iHideLabels ) return;
// Setup some convinient vairables
$a = $this->iAngle * M_PI/180.0;
$n = $this->iNumCirc;
$d = $this->iDelta;
// Setup the font and font color
$val = new Text();
$val->SetFont($this->iFontFamily,$this->iFontStyle,$this->iFontSize);
$val->SetColor($this->iFontColor);
if( $this->iFontBkgColor !== false ) {
$val->SetBox($this->iFontBkgColor,$this->iFontFrameColor);
}
// Position the labels relative to the radiant circles
if( $this->iLblAlign == LBLALIGN_TOP ) {
if( $a > 0 && $a <= M_PI/2 ) {
$val->SetAlign('left','bottom');
}
elseif( $a > M_PI/2 && $a <= M_PI ) {
$val->SetAlign('right','bottom');
}
}
elseif( $this->iLblAlign == LBLALIGN_CENTER ) {
$val->SetAlign('center','center');
}
// Stroke the labels close to each circle
$v = $d ;
$si = sin($a);
$co = cos($a);
for( $i=0; $i < $n; ++$i, $v += $d ) {
$r = $ri + ($i+1) * $rr;
$x = $xc + $co * $r;
$y = $yc - $si * $r;
$val->Set(sprintf($this->iLblFmt,$v));
$val->Stroke($aImg,$x,$y);
}
// Print the text in the zero circle
if( $this->iLblZeroTxt === null ) {
$this->iLblZeroTxt = sprintf($this->iLblFmt,$this->iZeroSum);
}
else {
$this->iLblZeroTxt = sprintf($this->iLblZeroTxt,$this->iZeroSum);
}
$val->Set($this->iLblZeroTxt);
$val->SetAlign('center','center');
$val->SetParagraphAlign('center');
$val->SetColor($this->iZFontColor);
$val->SetFont($this->iZFontFamily,$this->iZFontStyle,$this->iZFontSize);
$val->Stroke($aImg,$xc,$yc);
}
}
//===================================================
// CLASS LegendStyle
//===================================================
class LegendStyle {
public $iLength = 40, $iMargin = 20 , $iBottomMargin=5;
public $iCircleWeight=2, $iCircleRadius = 18, $iCircleColor='black';
public $iTxtFontFamily=FF_VERDANA,$iTxtFontStyle=FS_NORMAL,$iTxtFontSize=8;
public $iLblFontFamily=FF_VERDANA,$iLblFontStyle=FS_NORMAL,$iLblFontSize=8;
public $iCircleFontFamily=FF_VERDANA,$iCircleFontStyle=FS_NORMAL,$iCircleFontSize=8;
public $iLblFontColor='black',$iTxtFontColor='black',$iCircleFontColor='black';
public $iShow=true;
public $iFormatString='%.1f';
public $iTxtMargin=6, $iTxt='';
public $iZCircleTxt='Calm';
function SetFont($aFontFamily,$aFontStyle=FS_NORMAL,$aFontSize=10) {
$this->iLblFontFamily = $aFontFamily ;
$this->iLblFontStyle = $aFontStyle ;
$this->iLblFontSize = $aFontSize ;
$this->iTxtFontFamily = $aFontFamily ;
$this->iTxtFontStyle = $aFontStyle ;
$this->iTxtFontSize = $aFontSize ;
$this->iCircleFontFamily = $aFontFamily ;
$this->iCircleFontStyle = $aFontStyle ;
$this->iCircleFontSize = $aFontSize ;
}
function SetLFont($aFontFamily,$aFontStyle=FS_NORMAL,$aFontSize=10) {
$this->iLblFontFamily = $aFontFamily ;
$this->iLblFontStyle = $aFontStyle ;
$this->iLblFontSize = $aFontSize ;
}
function SetTFont($aFontFamily,$aFontStyle=FS_NORMAL,$aFontSize=10) {
$this->iTxtFontFamily = $aFontFamily ;
$this->iTxtFontStyle = $aFontStyle ;
$this->iTxtFontSize = $aFontSize ;
}
function SetCFont($aFontFamily,$aFontStyle=FS_NORMAL,$aFontSize=10) {
$this->iCircleFontFamily = $aFontFamily ;
$this->iCircleFontStyle = $aFontStyle ;
$this->iCircleFontSize = $aFontSize ;
}
function SetFontColor($aColor) {
$this->iTxtFontColor = $aColor ;
$this->iLblFontColor = $aColor ;
$this->iCircleFontColor = $aColor ;
}
function SetTFontColor($aColor) {
$this->iTxtFontColor = $aColor ;
}
function SetLFontColor($aColor) {
$this->iLblFontColor = $aColor ;
}
function SetCFontColor($aColor) {
$this->iCircleFontColor = $aColor ;
}
function SetCircleWeight($aWeight) {
$this->iCircleWeight = $aWeight;
}
function SetCircleRadius($aRadius) {
$this->iCircleRadius = $aRadius;
}
function SetCircleColor($aColor) {
$this->iCircleColor = $aColor ;
}
function SetCircleText($aTxt) {
$this->iZCircleTxt = $aTxt;
}
function SetMargin($aMarg,$aBottomMargin=5) {
$this->iMargin=$aMarg;
$this->iBottomMargin=$aBottomMargin;
}
function SetLength($aLength) {
$this->iLength = $aLength ;
}
function Show($aFlg=true) {
$this->iShow = $aFlg;
}
function Hide($aFlg=true) {
$this->iShow = ! $aFlg;
}
function SetFormat($aFmt) {
$this->iFormatString=$aFmt;
}
function SetText($aTxt) {
$this->iTxt = $aTxt ;
}
}
define('RANGE_OVERLAPPING',0);
define('RANGE_DISCRETE',1);
//===================================================
// CLASS WindrosePlot
//===================================================
class WindrosePlot {
private $iAntiAlias=true;
private $iData=array();
public $iX=0.5,$iY=0.5;
public $iSize=0.55;
private $iGridColor1='gray',$iGridColor2='darkgreen';
private $iRadialColorArray=array();
private $iRadialWeightArray=array();
private $iRadialStyleArray=array();
private $iRanges = array(1,2,3,5,6,10,13.5,99.0);
private $iRangeStyle = RANGE_OVERLAPPING ;
public $iCenterSize=60;
private $iType = WINDROSE_TYPE16;
public $iFontFamily=FF_VERDANA,$iFontStyle=FS_NORMAL,$iFontSize=10;
public $iFontColor='darkgray';
private $iRadialGridStyle='longdashed';
private $iAllDirectionLabels = array('E','ENE','NE','NNE','N','NNW','NW','WNW','W','WSW','SW','SSW','S','SSE','SE','ESE');
private $iStandardDirections = array();
private $iCircGridWeight=3, $iRadialGridWeight=1;
private $iLabelMargin=12;
private $iLegweights = array(2,4,6,8,10,12,14,16,18,20);
private $iLegColors = array('orange','black','blue','red','green','purple','navy','yellow','brown');
private $iLabelFormatString='', $iLabels=array();
private $iLabelPositioning = LBLPOSITION_EDGE;
private $iColor='white';
private $iShowBox=false, $iBoxColor='black',$iBoxWeight=1,$iBoxStyle='solid';
private $iOrdinalEncoding=KEYENCODING_ANTICLOCKWISE;
public $legend=null;
function __construct($aData) {
$this->iData = $aData;
$this->legend = new LegendStyle();
// Setup the scale
$this->scale = new WindrosePlotScale($this->iData);
// default label for free type i agle and a degree sign
$this->iLabelFormatString = '%.1f'.SymChar::Get('degree');
$delta = 2*M_PI/16;
for( $i=0, $a=0; $i < 16; ++$i, $a += $delta ) {
$this->iStandardDirections[$this->iAllDirectionLabels[$i]] = $a;
}
}
// Dummy method to make window plots have the same signature as the
// layout classes since windrose plots are "leaf" classes in the hierarchy
function LayoutSize() {
return 1;
}
function SetSize($aSize) {
$this->iSize = $aSize;
}
function SetDataKeyEncoding($aEncoding) {
$this->iOrdinalEncoding = $aEncoding;
}
function SetColor($aColor) {
$this->iColor = $aColor;
}
function SetRadialColors($aColors) {
$this->iRadialColorArray = $aColors;
}
function SetRadialWeights($aWeights) {
$this->iRadialWeightArray = $aWeights;
}
function SetRadialStyles($aStyles) {
$this->iRadialStyleArray = $aStyles;
}
function SetBox($aColor='black',$aWeight=1, $aStyle='solid', $aShow=true) {
$this->iShowBox = $aShow ;
$this->iBoxColor = $aColor ;
$this->iBoxWeight = $aWeight ;
$this->iBoxStyle = $aStyle;
}
function SetLabels($aLabels) {
$this->iLabels = $aLabels ;
}
function SetLabelMargin($aMarg) {
$this->iLabelMargin = $aMarg ;
}
function SetLabelFormat($aLblFormat) {
$this->iLabelFormatString = $aLblFormat ;
}
function SetCompassLabels($aLabels) {
if( count($aLabels) != 16 ) {
JpgraphError::RaiseL(22004); //('Label specification for windrose directions must have 16 values (one for each compass direction).');
}
$this->iAllDirectionLabels = $aLabels ;
$delta = 2*M_PI/16;
for( $i=0, $a=0; $i < 16; ++$i, $a += $delta ) {
$this->iStandardDirections[$this->iAllDirectionLabels[$i]] = $a;
}
}
function SetCenterSize($aSize) {
$this->iCenterSize = $aSize;
}
// Alias for SetCenterSize
function SetZCircleSize($aSize) {
$this->iCenterSize = $aSize;
}
function SetFont($aFFam,$aFStyle=FS_NORMAL,$aFSize=10) {
$this->iFontFamily = $aFFam ;
$this->iFontStyle = $aFStyle ;
$this->iFontSize = $aFSize ;
}
function SetFontColor($aColor) {
$this->iFontColor=$aColor;
}
function SetGridColor($aColor1,$aColor2) {
$this->iGridColor1 = $aColor1;
$this->iGridColor2 = $aColor2;
}
function SetGridWeight($aGrid1=1,$aGrid2=2) {
$this->iCircGridWeight = $aGrid1 ;
$this->iRadialGridWeight = $aGrid2 ;
}
function SetRadialGridStyle($aStyle) {
$aStyle = strtolower($aStyle);
if( !in_array($aStyle,array('solid','dotted','dashed','longdashed')) ) {
JpGraphError::RaiseL(22005); //("Line style for radial lines must be on of ('solid','dotted','dashed','longdashed') ");
}
$this->iRadialGridStyle=$aStyle;
}
function SetRanges($aRanges) {
$this->iRanges = $aRanges;
}
function SetRangeStyle($aStyle) {
$this->iRangeStyle = $aStyle;
}
function SetRangeColors($aLegColors) {
$this->iLegColors = $aLegColors;
}
function SetRangeWeights($aWeights) {
$n=count($aWeights);
for($i=0; $i< $n; ++$i ) {
$aWeights[$i] = floor($aWeights[$i]/2);
}
$this->iLegweights = $aWeights;
}
function SetType($aType) {
if( $aType < WINDROSE_TYPE4 || $aType > WINDROSE_TYPEFREE ) {
JpGraphError::RaiseL(22006); //('Illegal windrose type specified.');
}
$this->iType = $aType;
}
// Alias for SetPos()
function SetCenterPos($aX,$aY) {
$this->iX = $aX;
$this->iY = $aY;
}
function SetPos($aX,$aY) {
$this->iX = $aX;
$this->iY = $aY;
}
function SetAntiAlias($aFlag) {
$this->iAntiAlias = $aFlag ;
if( ! $aFlag )
$this->iCircGridWeight = 1;
}
function _ThickCircle($aImg,$aXC,$aYC,$aRad,$aWeight=2,$aColor) {
$aImg->SetColor($aColor);
$aRad *= 2 ;
$aImg->Ellipse($aXC,$aYC,$aRad,$aRad);
if( $aWeight > 1 ) {
$aImg->Ellipse($aXC,$aYC,$aRad+1,$aRad+1);
$aImg->Ellipse($aXC,$aYC,$aRad+2,$aRad+2);
if( $aWeight > 2 ) {
$aImg->Ellipse($aXC,$aYC,$aRad+3,$aRad+3);
$aImg->Ellipse($aXC,$aYC,$aRad+3,$aRad+4);
$aImg->Ellipse($aXC,$aYC,$aRad+4,$aRad+3);
}
}
}
function _StrokeWindLeg($aImg,$xc,$yc,$a,$ri,$r,$weight,$color) {
// If less than 1 px long then we assume this has been caused by rounding problems
// and should not be stroked
if( $r < 1 ) return;
$xt = $xc + cos($a)*$ri;
$yt = $yc - sin($a)*$ri;
$xxt = $xc + cos($a)*($ri+$r);
$yyt = $yc - sin($a)*($ri+$r);
$x1 = $xt - $weight*sin($a);
$y1 = $yt - $weight*cos($a);
$x2 = $xxt - $weight*sin($a);
$y2 = $yyt - $weight*cos($a);
$x3 = $xxt + $weight*sin($a);
$y3 = $yyt + $weight*cos($a);
$x4 = $xt + $weight*sin($a);
$y4 = $yt + $weight*cos($a);
$pts = array($x1,$y1,$x2,$y2,$x3,$y3,$x4,$y4);
$aImg->SetColor($color);
$aImg->FilledPolygon($pts);
}
function _StrokeLegend($aImg,$x,$y,$scaling=1,$aReturnWidth=false) {
if( ! $this->legend->iShow ) return 0;
$nlc = count($this->iLegColors);
$nlw = count($this->iLegweights);
// Setup font for ranges
$value = new Text();
$value->SetAlign('center','bottom');
$value->SetFont($this->legend->iLblFontFamily,
$this->legend->iLblFontStyle,
$this->legend->iLblFontSize*$scaling);
$value->SetColor($this->legend->iLblFontColor);
// Remember x-center
$xcenter = $x ;
// Construct format string
$fmt = $this->legend->iFormatString.'-'.$this->legend->iFormatString;
// Make sure that the length of each range is enough to cover the
// size of the labels
$tst = sprintf($fmt,$this->iRanges[0],$this->iRanges[1]);
$value->Set($tst);
$w = $value->GetWidth($aImg);
$l = round(max($this->legend->iLength * $scaling,$w*1.5));
$r = $this->legend->iCircleRadius * $scaling ;
$len = 2*$r + $this->scale->iMaxNum * $l;
// We are called just to find out the width
if( $aReturnWidth ) return $len;
$x -= round($len/2);
$x += $r;
// 4 pixels extra vertical margin since the circle sometimes is +/- 1 pixel of the
// theorethical radius due to imperfection in the GD library
//$y -= round(max($r,$scaling*$this->iLegweights[($this->scale->iMaxNum-1) % $nlw])+4*$scaling);
$y -= ($this->legend->iCircleRadius + 2)*$scaling+$this->legend->iBottomMargin*$scaling;
// Adjust for bottom text
if( $this->legend->iTxt != '' ) {
// Setup font for text
$value->Set($this->legend->iTxt);
$y -= /*$this->legend->iTxtMargin + */ $value->GetHeight($aImg);
}
// Stroke 0-circle
$this->_ThickCircle($aImg,$x,$y,$r,$this->legend->iCircleWeight,
$this->legend->iCircleColor);
// Remember the center of the circe
$xc=$x; $yc=$y;
$value->SetAlign('center','bottom');
$x += $r+1;
// Stroke all used ranges
$txty = $y -
round($this->iLegweights[($this->scale->iMaxNum-1)%$nlw]*$scaling) - 4*$scaling;
if( $this->scale->iMaxNum >= count($this->iRanges) ) {
JpGraphError::RaiseL(22007); //('To few values for the range legend.');
}
$i=0;$idx=0;
while( $i < $this->scale->iMaxNum ) {
$y1 = $y - round($this->iLegweights[$i % $nlw]*$scaling);
$y2 = $y + round($this->iLegweights[$i % $nlw]*$scaling);
$x2 = $x + $l ;
$aImg->SetColor($this->iLegColors[$i % $nlc]);
$aImg->FilledRectangle($x,$y1,$x2,$y2);
if( $this->iRangeStyle == RANGE_OVERLAPPING ) {
$lbl = sprintf($fmt,$this->iRanges[$idx],$this->iRanges[$idx+1]);
}
else {
$lbl = sprintf($fmt,$this->iRanges[$idx],$this->iRanges[$idx+1]);
++$idx;
}
$value->Set($lbl);
$value->Stroke($aImg,$x+$l/2,$txty);
$x = $x2;
++$i;++$idx;
}
// Setup circle font
$value->SetFont($this->legend->iCircleFontFamily,
$this->legend->iCircleFontStyle,
$this->legend->iCircleFontSize*$scaling);
$value->SetColor($this->legend->iCircleFontColor);
// Stroke 0-circle text
$value->Set($this->legend->iZCircleTxt);
$value->SetAlign('center','center');
$value->ParagraphAlign('center');
$value->Stroke($aImg,$xc,$yc);
// Setup circle font
$value->SetFont($this->legend->iTxtFontFamily,
$this->legend->iTxtFontStyle,
$this->legend->iTxtFontSize*$scaling);
$value->SetColor($this->legend->iTxtFontColor);
// Draw the text under the legend
$value->Set($this->legend->iTxt);
$value->SetAlign('center','top');
$value->SetParagraphAlign('center');
$value->Stroke($aImg,$xcenter,$y2+$this->legend->iTxtMargin*$scaling);
}
function SetAutoScaleAngle($aIsRegRose=true) {
// If the user already has manually set an angle don't
// trye to find a position
if( is_numeric($this->scale->iAngle) )
return;
if( $aIsRegRose ) {
// Create a complete data for all directions
// and translate string directions to ordinal values.
// This will much simplify the logic below
for( $i=0; $i < 16; ++$i ) {
$dtxt = $this->iAllDirectionLabels[$i];
if( !empty($this->iData[$dtxt]) ) {
$data[$i] = $this->iData[$dtxt];
}
elseif( !empty($this->iData[strtolower($dtxt)]) ) {
$data[$i] = $this->iData[strtolower($dtxt)];
}
elseif( !empty($this->iData[$i]) ) {
$data[$i] = $this->iData[$i];
}
else {
$data[$i] = array();
}
}
// Find the leg which has the lowest weighted sum of number of data around it
$c0 = array_sum($data[0]);
$c1 = array_sum($data[1]);
$found = 1;
$min = $c0+$c1*100; // Initialize to a high value
for( $i=1; $i < 15; ++$i ) {
$c2 = array_sum($data[$i+1]);
// Weight the leg we will use more to give preference
// to a short middle leg even if the 3 way sum is similair
$w = $c0 + 3*$c1 + $c2 ;
if( $w < $min ) {
$min = $w;
$found = $i;
}
$c0 = $c1;
$c1 = $c2;
}
$this->scale->iAngle = $found*22.5;
}
else {
$n = count($this->iData);
foreach( $this->iData as $dir => $leg ) {
if( !is_numeric($dir) ) {
$pos = array_search(strtoupper($dir),$this->iAllDirectionLabels);
if( $pos !== false ) {
$dir = $pos*22.5;
}
}
$data[round($dir)] = $leg;
}
// Get all the angles for the data and sort it
$keys = array_keys($data);
sort($keys, SORT_NUMERIC);
$n = count($data);
$found = false;
$max = 0 ;
for( $i=0; $i < 15; ++$i ) {
$try_a = round(22.5*$i);
if( $try_a > $keys[$n-1] ) break;
if( in_array($try_a,$keys) ) continue;
// Find the angle just lower than this
$j=0;
while( $j < $n && $keys[$j] <= $try_a ) ++$j;
if( $j == 0 ) {
$kj = 0; $keys[$n-1];
$d1 = 0; abs($kj-$try_a);
}
else {
--$j;
$kj = $keys[$j];
$d1 = abs($kj-$try_a);
}
// Find the angle just larger than this
$l=$n-1;
while( $l >= 0 && $keys[$l] >= $try_a ) --$l;
if( $l == $n-1) {
$kl = $keys[0];
$d2 = abs($kl-$try_a);
}
else {
++$l;
$kl = $keys[$l];
$d2 = abs($kl-$try_a);
}
// Weight the distance so that legs with large spread
// gets a better weight
$w = $d1 + $d2;
if( $i == 0 ) {
$w = round(1.4 * $w);
}
$diff = abs($d1 - $d2);
$w *= (360-$diff);
if( $w > $max ) {
$found = $i;
$max = $w;
}
}
$a = $found*22.5;
// Some heuristics to have some preferred positions
if( $keys[$n-1] < 25 ) $a = 45;
elseif( $keys[0] > 60 ) $a = 45;
elseif( $keys[0] > 25 && $keys[$n-1] < 340 ) $a = 0;
elseif( $keys[$n-1] < 75 ) $a = 90;
elseif( $keys[$n-1] < 120 ) $a = 135;
elseif( $keys[$n-1] < 160 ) $a = 180;
$this->scale->iAngle = $a ;
}
}
function NormAngle($a) {
while( $a > 360 ) {
$a -= 360;
}
return $a;
}
function SetLabelPosition($aPos) {
$this->iLabelPositioning = $aPos ;
}
function _StrokeFreeRose($dblImg,$value,$scaling,$xc,$yc,$r,$ri) {
// Plot radial grid lines and remember the end position
// and the angle for later use when plotting the labels
if( $this->iType != WINDROSE_TYPEFREE ) {
JpGraphError::RaiseL(22008); //('Internal error: Trying to plot free Windrose even though type is not a free windorose');
}
// Check if we should auto-position the angle for the
// labels. Basically we try to find a firection with smallest
// (or none) data.
$this->SetAutoScaleAngle(false);
$nlc = count($this->iLegColors);
$nlw = count($this->iLegweights);
// Stroke grid lines for directions and remember the
// position for the labels
$txtpos=array();
$num = count($this->iData);
$keys = array_keys($this->iData);
foreach( $this->iData as $dir => $legdata ) {
if( in_array($dir,$this->iAllDirectionLabels,true) === true) {
$a = $this->iStandardDirections[strtoupper($dir)];
if( in_array($a*180/M_PI,$keys) ) {
JpGraphError::RaiseL(22009,round($a*180/M_PI));
//('You have specified the same direction twice, once with an angle and once with a compass direction ('.$a*180/M_PI.' degrees.)');
}
}
elseif( is_numeric($dir) ) {
$this->NormAngle($dir);
if( $this->iOrdinalEncoding == KEYENCODING_CLOCKWISE ) {
$dir = 360-$dir;
}
$a = $dir * M_PI/180;
}
else {
JpGraphError::RaiseL(22010);//('Direction must either be a numeric value or one of the 16 compass directions');
}
$xxc = round($xc + cos($a)*$ri);
$yyc = round($yc - sin($a)*$ri);
$x = round($xc + cos($a)*$r);
$y = round($yc - sin($a)*$r);
if( empty($this->iRadialColorArray[$dir]) ) {
$dblImg->SetColor($this->iGridColor2);
}
else {
$dblImg->SetColor($this->iRadialColorArray[$dir]);
}
if( empty($this->iRadialWeightArray[$dir]) ) {
$dblImg->SetLineWeight($this->iRadialGridWeight);
}
else {
$dblImg->SetLineWeight($this->iRadialWeightArray[$dir]);
}
if( empty($this->iRadialStyleArray[$dir]) ) {
$dblImg->SetLineStyle($this->iRadialGridStyle);
}
else {
$dblImg->SetLineStyle($this->iRadialStyleArray[$dir]);
}
$dblImg->StyleLine($xxc,$yyc,$x,$y);
$txtpos[] = array($x,$y,$a);
}
$dblImg->SetLineWeight(1);
// Setup labels
$lr = $scaling * $this->iLabelMargin;
if( $this->iLabelPositioning == LBLPOSITION_EDGE ) {
$value->SetAlign('left','top');
}
else {
$value->SetAlign('center','center');
$value->SetMargin(0);
}
for($i=0; $i < $num; ++$i ) {
list($x,$y,$a) = $txtpos[$i];
// Determine the label
$da = $a*180/M_PI;
if( $this->iOrdinalEncoding == KEYENCODING_CLOCKWISE ) {
$da = 360 - $da;
}
//$da = 360-$da;
if( !empty($this->iLabels[$keys[$i]]) ) {
$lbl = $this->iLabels[$keys[$i]];
}
else {
$lbl = sprintf($this->iLabelFormatString,$da);
}
if( $this->iLabelPositioning == LBLPOSITION_CENTER ) {
$dx = $dy = 0;
}
else {
// LBLPOSIITON_EDGE
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 ) $dy=(0.5+$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;
}
$value->Set($lbl);
$th = $value->GetHeight($dblImg);
$tw = $value->GetWidth($dblImg);
$xt=round($lr*cos($a)+$x) - $dx*$tw;
$yt=round($y-$lr*sin($a)) - $dy*$th;
$value->Stroke($dblImg,$xt,$yt);
}
if( __DEBUG ) {
$dblImg->SetColor('red');
$dblImg->Circle($xc,$yc,$lr+$r);
}
// Stroke all the legs
reset($this->iData);
$i=0;
foreach($this->iData as $dir => $legdata) {
$legdata = array_slice($legdata,1);
$nn = count($legdata);
$a = $txtpos[$i][2];
$rri = $ri/$scaling;
for( $j=0; $j < $nn; ++$j ) {
// We want the non scaled original radius
$legr = $this->scale->RelTranslate($legdata[$j],$r/$scaling,$ri/$scaling) ;
$this->_StrokeWindLeg($dblImg, $xc, $yc, $a,
$rri *$scaling,
$legr *$scaling,
$this->iLegweights[$j % $nlw] * $scaling,
$this->iLegColors[$j % $nlc]);
$rri += $legr;
}
++$i;
}
}
// Translate potential string specified compass labels to their
// corresponding index.
function FixupIndexes($aDataArray,$num) {
$ret = array();
$keys = array_keys($aDataArray);
foreach($aDataArray as $idx => $data) {
if( is_string($idx) ) {
$idx = strtoupper($idx);
$res = array_search($idx,$this->iAllDirectionLabels);
if( $res === false ) {
JpGraphError::RaiseL(22011,$idx); //('Windrose index must be numeric or direction label. You have specified index='.$idx);
}
$idx = $res;
if( $idx % (16 / $num) !== 0 ) {
JpGraphError::RaiseL(22012); //('Windrose radial axis specification contains a direction which is not enabled.');
}
$idx /= (16/$num) ;
if( in_array($idx,$keys,1) ) {
JpgraphError::RaiseL(22013,$idx); //('You have specified the look&feel for the same compass direction twice, once with text and once with index (Index='.$idx.')');
}
}
if( $idx < 0 || $idx > 15 ) {
JpgraphError::RaiseL(22014); //('Index for copmass direction must be between 0 and 15.');
}
$ret[$idx] = $data;
}
return $ret;
}
function _StrokeRegularRose($dblImg,$value,$scaling,$xc,$yc,$r,$ri) {
// _StrokeRegularRose($dblImg,$xc,$yc,$r,$ri)
// Plot radial grid lines and remember the end position
// and the angle for later use when plotting the labels
switch( $this->iType ) {
case WINDROSE_TYPE4:
$num = 4; break;
case WINDROSE_TYPE8:
$num = 8; break;
case WINDROSE_TYPE16:
$num = 16; break;
default:
JpGraphError::RaiseL(22015);//('You have specified an undefined Windrose plot type.');
}
// Check if we should auto-position the angle for the
// labels. Basically we try to find a firection with smallest
// (or none) data.
$this->SetAutoScaleAngle(true);
$nlc = count($this->iLegColors);
$nlw = count($this->iLegweights);
$this->iRadialColorArray = $this->FixupIndexes($this->iRadialColorArray,$num);
$this->iRadialWeightArray = $this->FixupIndexes($this->iRadialWeightArray,$num);
$this->iRadialStyleArray = $this->FixupIndexes($this->iRadialStyleArray,$num);
$txtpos=array();
$a = 2*M_PI/$num;
$dblImg->SetColor($this->iGridColor2);
$dblImg->SetLineStyle($this->iRadialGridStyle);
$dblImg->SetLineWeight($this->iRadialGridWeight);
// Translate any name specified directions to the index
// so we can easily use it in the loop below
for($i=0; $i < $num; ++$i ) {
$xxc = round($xc + cos($a*$i)*$ri);
$yyc = round($yc - sin($a*$i)*$ri);
$x = round($xc + cos($a*$i)*$r);
$y = round($yc - sin($a*$i)*$r);
if( empty($this->iRadialColorArray[$i]) ) {
$dblImg->SetColor($this->iGridColor2);
}
else {
$dblImg->SetColor($this->iRadialColorArray[$i]);
}
if( empty($this->iRadialWeightArray[$i]) ) {
$dblImg->SetLineWeight($this->iRadialGridWeight);
}
else {
$dblImg->SetLineWeight($this->iRadialWeightArray[$i]);
}
if( empty($this->iRadialStyleArray[$i]) ) {
$dblImg->SetLineStyle($this->iRadialGridStyle);
}
else {
$dblImg->SetLineStyle($this->iRadialStyleArray[$i]);
}
$dblImg->StyleLine($xxc,$yyc,$x,$y);
$txtpos[] = array($x,$y,$a*$i);
}
$dblImg->SetLineWeight(1);
$lr = $scaling * $this->iLabelMargin;
if( $this->iLabelPositioning == LBLPOSITION_CENTER ) {
$value->SetAlign('center','center');
}
else {
$value->SetAlign('left','top');
$value->SetMargin(0);
$lr /= 2 ;
}
for($i=0; $i < $num; ++$i ) {
list($x,$y,$a) = $txtpos[$i];
// Set the position of the label
if( $this->iLabelPositioning == LBLPOSITION_CENTER ) {
$dx = $dy = 0;
}
else {
// LBLPOSIITON_EDGE
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 ) $dy=(0.5+$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;
}
$value->Set($this->iAllDirectionLabels[$i*(16/$num)]);
$th = $value->GetHeight($dblImg);
$tw = $value->GetWidth($dblImg);
$xt=round($lr*cos($a)+$x) - $dx*$tw;
$yt=round($y-$lr*sin($a)) - $dy*$th;
$value->Stroke($dblImg,$xt,$yt);
}
if( __DEBUG ) {
$dblImg->SetColor("red");
$dblImg->Circle($xc,$yc,$lr+$r);
}
// Stroke all the legs
reset($this->iData);
$keys = array_keys($this->iData);
foreach($this->iData as $idx => $legdata) {
$legdata = array_slice($legdata,1);
$nn = count($legdata);
if( is_string($idx) ) {
$idx = strtoupper($idx);
$idx = array_search($idx,$this->iAllDirectionLabels);
if( $idx === false ) {
JpGraphError::RaiseL(22016);//('Windrose leg index must be numeric or direction label.');
}
if( $idx % (16 / $num) !== 0 ) {
JpGraphError::RaiseL(22017);//('Windrose data contains a direction which is not enabled. Please adjust what labels are displayed.');
}
$idx /= (16/$num) ;
if( in_array($idx,$keys,1) ) {
JpgraphError::RaiseL(22018,$idx);//('You have specified data for the same compass direction twice, once with text and once with index (Index='.$idx.')');
}
}
if( $idx < 0 || $idx > 15 ) {
JpgraphError::RaiseL(22019);//('Index for direction must be between 0 and 15. You can\'t specify angles for a Regular Windplot, only index and compass directions.');
}
$a = $idx * (360 / $num) ;
$a *= M_PI/180.0;
$rri = $ri/$scaling;
for( $j=0; $j < $nn; ++$j ) {
// We want the non scaled original radius
$legr = $this->scale->RelTranslate($legdata[$j], $r/$scaling,$ri/$scaling) ;
$this->_StrokeWindLeg($dblImg, $xc, $yc, $a,
$rri *$scaling,
$legr *$scaling,
$this->iLegweights[$j % $nlw] * $scaling,
$this->iLegColors[$j % $nlc]);
$rri += $legr;
}
}
}
function getWidth($aImg) {
$scaling = 1;//$this->iAntiAlias ? 2 : 1 ;
if( $this->iSize > 0 && $this->iSize < 1 ) {
$this->iSize *= min($aImg->width,$aImg->height);
}
$value = new Text();
$value->SetFont($this->iFontFamily,$this->iFontStyle,$this->iFontSize*$scaling);
$value->SetColor($this->iFontColor);
// Setup extra size around the graph needed so that the labels
// doesn't get cut. For this we need to find the largest label.
// The code below gives a possible a little to large margin. The
// really, really proper way would be to account for what angle
// the label are at
$n = count($this->iLabels);
if( $n > 0 ) {
$maxh=0;$maxw=0;
foreach($this->iLabels as $key => $lbl) {
$value->Set($lbl);
$maxw = max($maxw,$value->GetWidth($aImg));
}
}
else {
$value->Set('888.888'); // Dummy value to get width/height
$maxw = $value->GetWidth($aImg);
}
// Add an extra margin of 50% the font size
$maxw += round($this->iFontSize*$scaling * 0.4) ;
$valxmarg = 1.5*$maxw+2*$this->iLabelMargin*$scaling;
$w = round($this->iSize*$scaling + $valxmarg);
// Make sure that the width of the legend fits
$legendwidth = $this->_StrokeLegend($aImg,0,0,$scaling,true)+10*$scaling;
$w = max($w,$legendwidth);
return $w;
}
function getHeight($aImg) {
$scaling = 1;//$this->iAntiAlias ? 2 : 1 ;
if( $this->iSize > 0 && $this->iSize < 1 ) {
$this->iSize *= min($aImg->width,$aImg->height);
}
$value = new Text();
$value->SetFont($this->iFontFamily,$this->iFontStyle,$this->iFontSize*$scaling);
$value->SetColor($this->iFontColor);
// Setup extra size around the graph needed so that the labels
// doesn't get cut. For this we need to find the largest label.
// The code below gives a possible a little to large margin. The
// really, really proper way would be to account for what angle
// the label are at
$n = count($this->iLabels);
if( $n > 0 ) {
$maxh=0;$maxw=0;
foreach($this->iLabels as $key => $lbl) {
$value->Set($lbl);
$maxh = max($maxh,$value->GetHeight($aImg));
}
}
else {
$value->Set('180.8'); // Dummy value to get width/height
$maxh = $value->GetHeight($aImg);
}
// Add an extra margin of 50% the font size
//$maxh += round($this->iFontSize*$scaling * 0.5) ;
$valymarg = 2*$maxh+2*$this->iLabelMargin*$scaling;
$legendheight = round($this->legend->iShow ? 1 : 0);
$legendheight *= max($this->legend->iCircleRadius*2,$this->legend->iTxtFontSize*2)+
$this->legend->iMargin + $this->legend->iBottomMargin + 2;
$legendheight *= $scaling;
$h = round($this->iSize*$scaling + $valymarg) + $legendheight ;
return $h;
}
function Stroke($aGraph) {
$aImg = $aGraph->img;
if( $this->iX > 0 && $this->iX < 1 ) {
$this->iX = round( $aImg->width * $this->iX ) ;
}
if( $this->iY > 0 && $this->iY < 1 ) {
$this->iY = round( $aImg->height * $this->iY ) ;
}
if( $this->iSize > 0 && $this->iSize < 1 ) {
$this->iSize *= min($aImg->width,$aImg->height);
}
if( $this->iCenterSize > 0 && $this->iCenterSize < 1 ) {
$this->iCenterSize *= $this->iSize;
}
$this->scale->AutoScale(($this->iSize - $this->iCenterSize)/2, round(2.5*$this->scale->iFontSize));
$scaling = $this->iAntiAlias ? 2 : 1 ;
$value = new Text();
$value->SetFont($this->iFontFamily,$this->iFontStyle,$this->iFontSize*$scaling);
$value->SetColor($this->iFontColor);
$legendheight = round($this->legend->iShow ? 1 : 0);
$legendheight *= max($this->legend->iCircleRadius*2,$this->legend->iTxtFontSize*2)+
$this->legend->iMargin + $this->legend->iBottomMargin + 2;
$legendheight *= $scaling;
$w = $scaling*$this->getWidth($aImg);
$h = $scaling*$this->getHeight($aImg);
// Copy back the double buffered image to the proper canvas
$ww = $w / $scaling ;
$hh = $h / $scaling ;
// Create the double buffer
if( $this->iAntiAlias ) {
$dblImg = new RotImage($w,$h);
// Set the background color
$dblImg->SetColor($this->iColor);
$dblImg->FilledRectangle(0,0,$w,$h);
}
else {
$dblImg = $aImg ;
// Make sure the ix and it coordinates correpond to the new top left center
$dblImg->SetTranslation($this->iX-$w/2, $this->iY-$h/2);
}
if( __DEBUG ) {
$dblImg->SetColor('red');
$dblImg->Rectangle(0,0,$w-1,$h-1);
}
$dblImg->SetColor('black');
if( $this->iShowBox ) {
$dblImg->SetColor($this->iBoxColor);
$old = $dblImg->SetLineWeight($this->iBoxWeight);
$dblImg->SetLineStyle($this->iBoxStyle);
$dblImg->Rectangle(0,0,$w-1,$h-1);
$dblImg->SetLineWeight($old);
}
$xc = round($w/2);
$yc = round(($h-$legendheight)/2);
if( __DEBUG ) {
$dblImg->SetColor('red');
$old = $dblImg->SetLineWeight(2);
$dblImg->Line($xc-5,$yc-5,$xc+5,$yc+5);
$dblImg->Line($xc+5,$yc-5,$xc-5,$yc+5);
$dblImg->SetLineWeight($old);
}
$this->iSize *= $scaling;
// Inner circle size
$ri = $this->iCenterSize/2 ;
// Full circle radius
$r = round( $this->iSize/2 );
// Get number of grid circles
$n = $this->scale->GetNumCirc();
// Plot circle grids
$ri *= $scaling ;
$rr = round(($r-$ri)/$n);
for( $i = 1; $i <= $n; ++$i ) {
$this->_ThickCircle($dblImg,$xc,$yc,$rr*$i+$ri,
$this->iCircGridWeight,$this->iGridColor1);
}
$num = 0 ;
if( $this->iType == WINDROSE_TYPEFREE ) {
$this->_StrokeFreeRose($dblImg,$value,$scaling,$xc,$yc,$r,$ri);
}
else {
// Check if we need to re-code the interpretation of the ordinal
// number in the data. Internally ordinal value 0 is East and then
// counted anti-clockwise. The user might choose an encoding
// that have 0 being the first axis to the right of the "N" axis and then
// counted clock-wise
if( $this->iOrdinalEncoding == KEYENCODING_CLOCKWISE ) {
if( $this->iType == WINDROSE_TYPE16 ) {
$const1 = 19; $const2 = 16;
}
elseif( $this->iType == WINDROSE_TYPE8 ) {
$const1 = 9; $const2 = 8;
}
else {
$const1 = 4; $const2 = 4;
}
$tmp = array();
$n=count($this->iData);
foreach( $this->iData as $key => $val ) {
if( is_numeric($key) ) {
$key = ($const1 - $key) % $const2 ;
}
$tmp[$key] = $val;
}
$this->iData = $tmp;
}
$this->_StrokeRegularRose($dblImg,$value,$scaling,$xc,$yc,$r,$ri);
}
// Stroke the labels
$this->scale->iFontSize *= $scaling;
$this->scale->iZFontSize *= $scaling;
$this->scale->StrokeLabels($dblImg,$xc,$yc,$ri,$rr);
// Stroke the inner circle again since the legs
// might have written over it
$this->_ThickCircle($dblImg,$xc,$yc,$ri,$this->iCircGridWeight,$this->iGridColor1);
if( $ww > $aImg->width ) {
JpgraphError::RaiseL(22020);
//('Windrose plot is too large to fit the specified Graph size. Please use WindrosePlot::SetSize() to make the plot smaller or increase the size of the Graph in the initial WindroseGraph() call.');
}
$x = $xc;
$y = $h;
$this->_StrokeLegend($dblImg,$x,$y,$scaling);
if( $this->iAntiAlias ) {
$aImg->Copy($dblImg->img, $this->iX-$ww/2, $this->iY-$hh/2, 0, 0, $ww,$hh, $w,$h);
}
// We need to restore the translation matrix
$aImg->SetTranslation(0,0);
}
}
//============================================================
// CLASS WindroseGraph
//============================================================
class WindroseGraph extends Graph {
private $posx, $posy;
public $plots=array();
function __construct($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('white');
$this->title->SetFont(FF_VERDANA,FS_NORMAL,12);
$this->title->SetMargin(8);
$this->subtitle->SetFont(FF_VERDANA,FS_NORMAL,10);
$this->subtitle->SetMargin(0);
$this->subsubtitle->SetFont(FF_VERDANA,FS_NORMAL,8);
$this->subsubtitle->SetMargin(0);
}
function StrokeTexts() {
if( $this->texts != null ) {
$n = count($this->texts);
for($i=0; $i < $n; ++$i ) {
$this->texts[$i]->Stroke($this->img);
}
}
}
function StrokeIcons() {
if( $this->iIcons != null ) {
$n = count($this->iIcons);
for( $i=0; $i < $n; ++$i ) {
// Since Windrose graphs doesn't have any linear scale the position of
// each icon has to be given as absolute coordinates
$this->iIcons[$i]->_Stroke($this->img);
}
}
}
//---------------
// PUBLIC METHODS
function Add($aObj) {
if( is_array($aObj) && count($aObj) > 0 ) {
$cl = $aObj[0];
}
else {
$cl = $aObj;
}
if( $cl instanceof Text ) {
$this->AddText($aObj);
}
elseif( $cl instanceof IconPlot ) {
$this->AddIcon($aObj);
}
elseif( ($cl instanceof WindrosePlot) || ($cl instanceof LayoutRect) || ($cl instanceof LayoutHor)) {
$this->plots[] = $aObj;
}
else {
JpgraphError::RaiseL(22021);
}
}
function AddText($aTxt,$aToY2=false) {
parent::AddText($aTxt);
}
function SetColor($c) {
$this->SetMarginColor($c);
}
// Method description
function Stroke($aStrokeFileName="") {
// If the filename is the predefined value = '_csim_special_'
// we assume that the call to stroke only needs to do enough
// to correctly generate the CSIM maps.
// We use this variable to skip things we don't strictly need
// to do to generate the image map to improve performance
// as best we can. Therefore you will see a lot of tests !$_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;
if( $this->background_image != "" || $this->background_cflag != "" ) {
$this->StrokeFrameBackground();
}
else {
$this->StrokeFrame();
}
// n holds number of plots
$n = count($this->plots);
for($i=0; $i < $n ; ++$i) {
$this->plots[$i]->Stroke($this);
}
$this->footer->Stroke($this->img);
$this->StrokeIcons();
$this->StrokeTexts();
$this->StrokeTitles();
// 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
?>