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66 aurelien 1
<?php
2
/*=======================================================================
3
 // File:        JPGRAPH_RADAR.PHP
4
 // Description: Radar plot extension for JpGraph
5
 // Created:     2001-02-04
6
 // Ver:         $Id: jpgraph_radar.php 1783 2009-08-25 11:41:01Z ljp $
7
 //
8
 // Copyright (c) Aditus Consulting. All rights reserved.
9
 //========================================================================
10
 */
11
 
12
require_once('jpgraph_plotmark.inc.php');
13
 
14
//===================================================
15
// CLASS RadarLogTicks
16
// Description: Logarithmic ticks
17
//===================================================
18
class RadarLogTicks extends Ticks {
19
 
20
    function __construct() {
21
            // Empty
22
    }
23
 
24
    function Stroke($aImg,&$grid,$aPos,$aAxisAngle,$aScale,&$aMajPos,&$aMajLabel) {
25
        $start = $aScale->GetMinVal();
26
        $limit = $aScale->GetMaxVal();
27
        $nextMajor = 10*$start;
28
        $step = $nextMajor / 10.0;
29
        $count=1;
30
 
31
        $ticklen_maj=5;
32
        $dx_maj=round(sin($aAxisAngle)*$ticklen_maj);
33
        $dy_maj=round(cos($aAxisAngle)*$ticklen_maj);
34
        $ticklen_min=3;
35
        $dx_min=round(sin($aAxisAngle)*$ticklen_min);
36
        $dy_min=round(cos($aAxisAngle)*$ticklen_min);
37
 
38
        $aMajPos=array();
39
        $aMajLabel=array();
40
 
41
        if( $this->supress_first ) {
42
            $aMajLabel[] = '';
43
        }
44
        else {
45
            $aMajLabel[]=$start;
46
        }
47
 
48
        $yr=$aScale->RelTranslate($start);
49
        $xt=round($yr*cos($aAxisAngle))+$aScale->scale_abs[0];
50
        $yt=$aPos-round($yr*sin($aAxisAngle));
51
        $aMajPos[]=$xt+2*$dx_maj;
52
        $aMajPos[]=$yt-$aImg->GetFontheight()/2;
53
        $grid[]=$xt;
54
        $grid[]=$yt;
55
 
56
        $aImg->SetLineWeight($this->weight);
57
 
58
        for($y=$start; $y<=$limit; $y+=$step,++$count  ) {
59
            $yr=$aScale->RelTranslate($y);
60
            $xt=round($yr*cos($aAxisAngle))+$aScale->scale_abs[0];
61
            $yt=$aPos-round($yr*sin($aAxisAngle));
62
            if( $count % 10 == 0 ) {
63
                $grid[]=$xt;
64
                $grid[]=$yt;
65
                $aMajPos[]=$xt+2*$dx_maj;
66
                $aMajPos[]=$yt-$aImg->GetFontheight()/2;
67
                if( !$this->supress_tickmarks ) {
68
                    if( $this->majcolor != '' ) {
69
                        $aImg->PushColor($this->majcolor);
70
                    }
71
                    $aImg->Line($xt+$dx_maj,$yt+$dy_maj,$xt-$dx_maj,$yt-$dy_maj);
72
                    if( $this->majcolor != '' ) {
73
                        $aImg->PopColor();
74
                    }
75
                }
76
                if( $this->label_formfunc != '' ) {
77
                    $f=$this->label_formfunc;
78
                    $l = call_user_func($f,$nextMajor);
79
                }
80
                else {
81
                    $l = $nextMajor;
82
                }
83
 
84
                $aMajLabel[]=$l;
85
                $nextMajor *= 10;
86
                $step *= 10;
87
                $count=1;
88
            }
89
            else {
90
                if( !$this->supress_minor_tickmarks ) {
91
                    if( $this->mincolor != '' ) {
92
                        $aImg->PushColor($this->mincolor);
93
                    }
94
                    $aImg->Line($xt+$dx_min,$yt+$dy_min,$xt-$dx_min,$yt-$dy_min);
95
                    if( $this->mincolor != '' ) {
96
                        $aImg->PopColor();
97
                    }
98
                }
99
            }
100
        }
101
    }
102
}
103
 
104
//===================================================
105
// CLASS RadarLinear
106
// Description: Linear ticks
107
//===================================================
108
class RadarLinearTicks extends Ticks {
109
 
110
    private $minor_step=1, $major_step=2;
111
    private $xlabel_offset=0,$xtick_offset=0;
112
 
113
    function __construct() {
114
        // Empty
115
    }
116
 
117
    // Return major step size in world coordinates
118
    function GetMajor() {
119
        return $this->major_step;
120
    }
121
 
122
    // Return minor step size in world coordinates
123
    function GetMinor() {
124
        return $this->minor_step;
125
    }
126
 
127
    // Set Minor and Major ticks (in world coordinates)
128
    function Set($aMajStep,$aMinStep=false) {
129
        if( $aMinStep==false ) {
130
            $aMinStep=$aMajStep;
131
        }
132
 
133
        if( $aMajStep <= 0 || $aMinStep <= 0 ) {
134
            JpGraphError::RaiseL(25064);
135
            //JpGraphError::Raise(" Minor or major step size is 0. Check that you haven't got an accidental SetTextTicks(0) in your code. If this is not the case you might have stumbled upon a bug in JpGraph. Please report this and if possible include the data that caused the problem.");
136
        }
137
 
138
        $this->major_step=$aMajStep;
139
        $this->minor_step=$aMinStep;
140
        $this->is_set = true;
141
    }
142
 
143
    function Stroke($aImg,&$grid,$aPos,$aAxisAngle,$aScale,&$aMajPos,&$aMajLabel) {
144
        // Prepare to draw linear ticks
145
        $maj_step_abs = abs($aScale->scale_factor*$this->major_step);
146
        $min_step_abs = abs($aScale->scale_factor*$this->minor_step);
147
        $nbrmaj = round($aScale->world_abs_size/$maj_step_abs);
148
        $nbrmin = round($aScale->world_abs_size/$min_step_abs);
149
        $skip = round($nbrmin/$nbrmaj); // Don't draw minor on top of major
150
 
151
        // Draw major ticks
152
        $ticklen2=$this->major_abs_size;
153
        $dx=round(sin($aAxisAngle)*$ticklen2);
154
        $dy=round(cos($aAxisAngle)*$ticklen2);
155
        $label=$aScale->scale[0]+$this->major_step;
156
 
157
        $aImg->SetLineWeight($this->weight);
158
 
159
        $aMajPos = array();
160
        $aMajLabel = array();
161
 
162
        for($i=1; $i<=$nbrmaj; ++$i) {
163
            $xt=round($i*$maj_step_abs*cos($aAxisAngle))+$aScale->scale_abs[0];
164
            $yt=$aPos-round($i*$maj_step_abs*sin($aAxisAngle));
165
 
166
            if( $this->label_formfunc != '' ) {
167
                $f=$this->label_formfunc;
168
                $l = call_user_func($f,$label);
169
            }
170
            else {
171
                $l = $label;
172
            }
173
 
174
            $aMajLabel[]=$l;
175
            $label += $this->major_step;
176
            $grid[]=$xt;
177
            $grid[]=$yt;
178
            $aMajPos[($i-1)*2]=$xt+2*$dx;
179
            $aMajPos[($i-1)*2+1]=$yt-$aImg->GetFontheight()/2;
180
            if( !$this->supress_tickmarks ) {
181
                if( $this->majcolor != '' ) {
182
                    $aImg->PushColor($this->majcolor);
183
                }
184
                $aImg->Line($xt+$dx,$yt+$dy,$xt-$dx,$yt-$dy);
185
                if( $this->majcolor != '' ) {
186
                    $aImg->PopColor();
187
                }
188
            }
189
        }
190
 
191
        // Draw minor ticks
192
        $ticklen2=$this->minor_abs_size;
193
        $dx=round(sin($aAxisAngle)*$ticklen2);
194
        $dy=round(cos($aAxisAngle)*$ticklen2);
195
        if( !$this->supress_tickmarks && !$this->supress_minor_tickmarks) {
196
            if( $this->mincolor != '' ) {
197
                $aImg->PushColor($this->mincolor);
198
            }
199
            for($i=1; $i<=$nbrmin; ++$i) {
200
                if( ($i % $skip) == 0 ) {
201
                    continue;
202
                }
203
                $xt=round($i*$min_step_abs*cos($aAxisAngle))+$aScale->scale_abs[0];
204
                $yt=$aPos-round($i*$min_step_abs*sin($aAxisAngle));
205
                $aImg->Line($xt+$dx,$yt+$dy,$xt-$dx,$yt-$dy);
206
            }
207
            if( $this->mincolor != '' ) {
208
                $aImg->PopColor();
209
            }
210
        }
211
    }
212
}
213
 
214
 
215
//===================================================
216
// CLASS RadarAxis
217
// Description: Implements axis for the radar graph
218
//===================================================
219
class RadarAxis extends AxisPrototype {
220
    public $title=null;
221
    private $title_color='navy';
222
    private $len=0;
223
 
224
    function __construct($img,$aScale,$color=array(0,0,0)) {
225
        parent::__construct($img,$aScale,$color);
226
        $this->len = $img->plotheight;
227
        $this->title = new Text();
228
        $this->title->SetFont(FF_FONT1,FS_BOLD);
229
        $this->color = array(0,0,0);
230
    }
231
 
232
    // Stroke the axis
233
    // $pos    = Vertical position of axis
234
    // $aAxisAngle = Axis angle
235
    // $grid   = Returns an array with positions used to draw the grid
236
    // $lf   = Label flag, TRUE if the axis should have labels
237
    function Stroke($pos,$aAxisAngle,&$grid,$title,$lf) {
238
        $this->img->SetColor($this->color);
239
 
240
        // Determine end points for the axis
241
        $x=round($this->scale->world_abs_size*cos($aAxisAngle)+$this->scale->scale_abs[0]);
242
        $y=round($pos-$this->scale->world_abs_size*sin($aAxisAngle));
243
 
244
        // Draw axis
245
        $this->img->SetColor($this->color);
246
        $this->img->SetLineWeight($this->weight);
247
        if( !$this->hide ) {
248
            $this->img->Line($this->scale->scale_abs[0],$pos,$x,$y);
249
        }
250
 
251
        $this->scale->ticks->Stroke($this->img,$grid,$pos,$aAxisAngle,$this->scale,$majpos,$majlabel);
252
        $ncolor=0;
253
        if( isset($this->ticks_label_colors) ) {
254
            $ncolor=count($this->ticks_label_colors);
255
        }
256
 
257
        // Draw labels
258
        if( $lf && !$this->hide ) {
259
            $this->img->SetFont($this->font_family,$this->font_style,$this->font_size);
260
            $this->img->SetTextAlign('left','top');
261
            $this->img->SetColor($this->label_color);
262
 
263
            // majpos contains (x,y) coordinates for labels
264
            if( ! $this->hide_labels ) {
265
                $n = floor(count($majpos)/2);
266
                for($i=0; $i < $n; ++$i) {
267
                    // Set specific label color if specified
268
                    if( $ncolor > 0 ) {
269
                        $this->img->SetColor($this->ticks_label_colors[$i % $ncolor]);
270
                    }
271
 
272
                    if( $this->ticks_label != null && isset($this->ticks_label[$i]) ) {
273
                        $this->img->StrokeText($majpos[$i*2],$majpos[$i*2+1],$this->ticks_label[$i]);
274
                    }
275
                    else {
276
                        $this->img->StrokeText($majpos[$i*2],$majpos[$i*2+1],$majlabel[$i]);
277
                    }
278
                }
279
            }
280
        }
281
        $this->_StrokeAxisTitle($pos,$aAxisAngle,$title);
282
    }
283
 
284
    function _StrokeAxisTitle($pos,$aAxisAngle,$title) {
285
        $this->title->Set($title);
286
        $marg=6+$this->title->margin;
287
        $xt=round(($this->scale->world_abs_size+$marg)*cos($aAxisAngle)+$this->scale->scale_abs[0]);
288
        $yt=round($pos-($this->scale->world_abs_size+$marg)*sin($aAxisAngle));
289
 
290
        // Position the axis title.
291
        // dx, dy is the offset from the top left corner of the bounding box that sorrounds the text
292
        // that intersects with the extension of the corresponding axis. The code looks a little
293
        // bit messy but this is really the only way of having a reasonable position of the
294
        // axis titles.
295
        if( $this->title->iWordwrap > 0 ) {
296
            $title = wordwrap($title,$this->title->iWordwrap,"\n");
297
        }
298
 
299
        $h=$this->img->GetTextHeight($title)*1.2;
300
        $w=$this->img->GetTextWidth($title)*1.2;
301
 
302
        while( $aAxisAngle > 2*M_PI )
303
            $aAxisAngle -= 2*M_PI;
304
 
305
        // Around 3 a'clock
306
        if( $aAxisAngle>=7*M_PI/4 || $aAxisAngle <= M_PI/4 ) $dx=-0.15; // Small trimming to make the dist to the axis more even
307
 
308
        // Around 12 a'clock
309
        if( $aAxisAngle>=M_PI/4 && $aAxisAngle <= 3*M_PI/4 ) $dx=($aAxisAngle-M_PI/4)*2/M_PI;
310
 
311
        // Around 9 a'clock
312
        if( $aAxisAngle>=3*M_PI/4 && $aAxisAngle <= 5*M_PI/4 ) $dx=1;
313
 
314
        // Around 6 a'clock
315
        if( $aAxisAngle>=5*M_PI/4 && $aAxisAngle <= 7*M_PI/4 ) $dx=(1-($aAxisAngle-M_PI*5/4)*2/M_PI);
316
 
317
        if( $aAxisAngle>=7*M_PI/4 ) $dy=(($aAxisAngle-M_PI)-3*M_PI/4)*2/M_PI;
318
        if( $aAxisAngle<=M_PI/12 ) $dy=(0.5-$aAxisAngle*2/M_PI);
319
        if( $aAxisAngle<=M_PI/4 && $aAxisAngle > M_PI/12) $dy=(1-$aAxisAngle*2/M_PI);
320
        if( $aAxisAngle>=M_PI/4 && $aAxisAngle <= 3*M_PI/4 ) $dy=1;
321
        if( $aAxisAngle>=3*M_PI/4 && $aAxisAngle <= 5*M_PI/4 ) $dy=(1-($aAxisAngle-3*M_PI/4)*2/M_PI);
322
        if( $aAxisAngle>=5*M_PI/4 && $aAxisAngle <= 7*M_PI/4 ) $dy=0;
323
 
324
        if( !$this->hide ) {
325
            $this->title->Stroke($this->img,$xt-$dx*$w,$yt-$dy*$h,$title);
326
        }
327
    }
328
 
329
} // Class
330
 
331
 
332
//===================================================
333
// CLASS RadarGrid
334
// Description: Draws grid for the radar graph
335
//===================================================
336
class RadarGrid { //extends Grid {
337
    private $type='solid';
338
    private $grid_color='#DDDDDD';
339
    private $show=false, $weight=1;
340
 
341
    function __construct() {
342
        // Empty
343
    }
344
 
345
    function SetColor($aMajColor) {
346
        $this->grid_color = $aMajColor;
347
    }
348
 
349
    function SetWeight($aWeight) {
350
        $this->weight=$aWeight;
351
    }
352
 
353
    // Specify if grid should be dashed, dotted or solid
354
    function SetLineStyle($aType) {
355
        $this->type = $aType;
356
    }
357
 
358
    // Decide if both major and minor grid should be displayed
359
    function Show($aShowMajor=true) {
360
        $this->show=$aShowMajor;
361
    }
362
 
363
    function Stroke($img,$grid) {
364
        if( !$this->show ) {
365
            return;
366
        }
367
 
368
        $nbrticks = count($grid[0])/2;
369
        $nbrpnts = count($grid);
370
        $img->SetColor($this->grid_color);
371
        $img->SetLineWeight($this->weight);
372
 
373
        for($i=0; $i<$nbrticks; ++$i) {
374
            for($j=0; $j<$nbrpnts; ++$j) {
375
                $pnts[$j*2]=$grid[$j][$i*2];
376
                $pnts[$j*2+1]=$grid[$j][$i*2+1];
377
            }
378
            for($k=0; $k<$nbrpnts; ++$k ){
379
                $l=($k+1)%$nbrpnts;
380
                if( $this->type == 'solid' )
381
                    $img->Line($pnts[$k*2],$pnts[$k*2+1],$pnts[$l*2],$pnts[$l*2+1]);
382
                elseif( $this->type == 'dotted' )
383
                    $img->DashedLine($pnts[$k*2],$pnts[$k*2+1],$pnts[$l*2],$pnts[$l*2+1],1,6);
384
                elseif( $this->type == 'dashed' )
385
                    $img->DashedLine($pnts[$k*2],$pnts[$k*2+1],$pnts[$l*2],$pnts[$l*2+1],2,4);
386
                elseif( $this->type == 'longdashed' )
387
                    $img->DashedLine($pnts[$k*2],$pnts[$k*2+1],$pnts[$l*2],$pnts[$l*2+1],8,6);
388
            }
389
            $pnts=array();
390
        }
391
    }
392
} // Class
393
 
394
 
395
//===================================================
396
// CLASS RadarPlot
397
// Description: Plot a radarplot
398
//===================================================
399
class RadarPlot {
400
    public $mark=null;
401
    public $legend='';
402
    public $legendcsimtarget='';
403
    public $legendcsimalt='';
404
    public $csimtargets=array(); // Array of targets for CSIM
405
    public $csimareas="";   // Resultant CSIM area tags
406
    public $csimalts=null;   // ALT:s for corresponding target
407
    private $data=array();
408
    private $fill=false, $fill_color=array(200,170,180);
409
    private $color=array(0,0,0);
410
    private $weight=1;
411
    private $linestyle='solid';
412
 
413
    //---------------
414
    // CONSTRUCTOR
415
    function __construct($data) {
416
        $this->data = $data;
417
        $this->mark = new PlotMark();
418
    }
419
 
420
    function Min() {
421
        return Min($this->data);
422
    }
423
 
424
    function Max() {
425
        return Max($this->data);
426
    }
427
 
428
    function SetLegend($legend) {
429
        $this->legend=$legend;
430
    }
431
 
432
    function SetLineStyle($aStyle) {
433
        $this->linestyle=$aStyle;
434
    }
435
 
436
    function SetLineWeight($w) {
437
        $this->weight=$w;
438
    }
439
 
440
    function SetFillColor($aColor) {
441
        $this->fill_color = $aColor;
442
        $this->fill = true;
443
    }
444
 
445
    function SetFill($f=true) {
446
        $this->fill = $f;
447
    }
448
 
449
    function SetColor($aColor,$aFillColor=false) {
450
        $this->color = $aColor;
451
        if( $aFillColor ) {
452
            $this->SetFillColor($aFillColor);
453
            $this->fill = true;
454
        }
455
    }
456
 
457
    // Set href targets for CSIM
458
    function SetCSIMTargets($aTargets,$aAlts=null) {
459
        $this->csimtargets=$aTargets;
460
        $this->csimalts=$aAlts;
461
    }
462
 
463
    // Get all created areas
464
    function GetCSIMareas() {
465
        return $this->csimareas;
466
    }
467
 
468
    function Stroke($img, $pos, $scale, $startangle) {
469
        $nbrpnts = count($this->data);
470
        $astep=2*M_PI/$nbrpnts;
471
        $a=$startangle;
472
 
473
        for($i=0; $i<$nbrpnts; ++$i) {
474
 
475
            // Rotate each non null point to the correct axis-angle
476
            $cs=$scale->RelTranslate($this->data[$i]);
477
            $x=round($cs*cos($a)+$scale->scale_abs[0]);
478
            $y=round($pos-$cs*sin($a));
479
 
480
            $pnts[$i*2]=$x;
481
            $pnts[$i*2+1]=$y;
482
 
483
            // If the next point is null then we draw this polygon segment
484
            // to the center, skip the next and draw the next segment from
485
            // the center up to the point on the axis with the first non-null
486
            // value and continues from that point. Some additoinal logic is necessary
487
            // to handle the boundary conditions
488
            if( $i < $nbrpnts-1 ) {
489
                if( is_null($this->data[$i+1]) ) {
490
                    $cs = 0;
491
                    $x=round($cs*cos($a)+$scale->scale_abs[0]);
492
                    $y=round($pos-$cs*sin($a));
493
                    $pnts[$i*2]=$x;
494
                    $pnts[$i*2+1]=$y;
495
                    $a += $astep;
496
                }
497
            }
498
 
499
            $a += $astep;
500
        }
501
 
502
        if( $this->fill ) {
503
            $img->SetColor($this->fill_color);
504
            $img->FilledPolygon($pnts);
505
        }
506
 
507
        $img->SetLineWeight($this->weight);
508
        $img->SetColor($this->color);
509
        $img->SetLineStyle($this->linestyle);
510
        $pnts[] = $pnts[0];
511
        $pnts[] = $pnts[1];
512
        $img->Polygon($pnts);
513
        $img->SetLineStyle('solid'); // Reset line style to default
514
 
515
        // Add plotmarks on top
516
        if( $this->mark->show ) {
517
			for($i=0; $i < $nbrpnts; ++$i) {
518
	            if( isset($this->csimtargets[$i]) ) {
519
	                $this->mark->SetCSIMTarget($this->csimtargets[$i]);
520
	                $this->mark->SetCSIMAlt($this->csimalts[$i]);
521
	                $this->mark->SetCSIMAltVal($pnts[$i*2], $pnts[$i*2+1]);
522
	                $this->mark->Stroke($img, $pnts[$i*2], $pnts[$i*2+1]);
523
	                $this->csimareas .= $this->mark->GetCSIMAreas();
524
	            }
525
	            else {
526
					$this->mark->Stroke($img,$pnts[$i*2],$pnts[$i*2+1]);
527
	            }
528
            }
529
        }
530
 
531
    }
532
 
533
    function GetCount() {
534
        return count($this->data);
535
    }
536
 
537
    function Legend($graph) {
538
        if( $this->legend == '' ) {
539
            return;
540
        }
541
        if( $this->fill ) {
542
            $graph->legend->Add($this->legend,$this->fill_color,$this->mark);
543
        } else {
544
            $graph->legend->Add($this->legend,$this->color,$this->mark);
545
        }
546
    }
547
 
548
} // Class
549
 
550
//===================================================
551
// CLASS RadarGraph
552
// Description: Main container for a radar graph
553
//===================================================
554
class RadarGraph extends Graph {
555
    public $grid,$axis=null;
556
    private $posx,$posy;
557
    private $len;
558
    private $axis_title=null;
559
 
560
    function __construct($width=300,$height=200,$cachedName="",$timeout=0,$inline=1) {
561
        parent::__construct($width,$height,$cachedName,$timeout,$inline);
562
        $this->posx = $width/2;
563
        $this->posy = $height/2;
564
        $this->len = min($width,$height)*0.35;
565
        $this->SetColor(array(255,255,255));
566
        $this->SetTickDensity(TICKD_NORMAL);
567
        $this->SetScale('lin');
568
        $this->SetGridDepth(DEPTH_FRONT);
569
    }
570
 
571
    function HideTickMarks($aFlag=true) {
572
        $this->axis->scale->ticks->SupressTickMarks($aFlag);
573
    }
574
 
575
    function ShowMinorTickmarks($aFlag=true) {
576
        $this->yscale->ticks->SupressMinorTickMarks(!$aFlag);
577
    }
578
 
579
    function SetScale($axtype,$ymin=1,$ymax=1,$dummy1=null,$dumy2=null) {
580
        if( $axtype != 'lin' && $axtype != 'log' ) {
581
            JpGraphError::RaiseL(18003,$axtype);
582
            //("Illegal scale for radarplot ($axtype). Must be \"lin\" or \"log\"");
583
        }
584
        if( $axtype == 'lin' ) {
585
            $this->yscale = new LinearScale($ymin,$ymax);
586
            $this->yscale->ticks = new RadarLinearTicks();
587
            $this->yscale->ticks->SupressMinorTickMarks();
588
        }
589
        elseif( $axtype == 'log' ) {
590
            $this->yscale = new LogScale($ymin,$ymax);
591
            $this->yscale->ticks = new RadarLogTicks();
592
        }
593
 
594
        $this->axis = new RadarAxis($this->img,$this->yscale);
595
        $this->grid = new RadarGrid();
596
    }
597
 
598
    function SetSize($aSize) {
599
        if( $aSize < 0.1 || $aSize>1 ) {
600
            JpGraphError::RaiseL(18004,$aSize);
601
            //("Radar Plot size must be between 0.1 and 1. (Your value=$s)");
602
        }
603
        $this->len=min($this->img->width,$this->img->height)*$aSize/2;
604
    }
605
 
606
    function SetPlotSize($aSize) {
607
        $this->SetSize($aSize);
608
    }
609
 
610
    function SetTickDensity($densy=TICKD_NORMAL,$dummy1=null) {
611
        $this->ytick_factor=25;
612
        switch( $densy ) {
613
            case TICKD_DENSE:
614
                $this->ytick_factor=12;
615
                break;
616
            case TICKD_NORMAL:
617
                $this->ytick_factor=25;
618
                break;
619
            case TICKD_SPARSE:
620
                $this->ytick_factor=40;
621
                break;
622
            case TICKD_VERYSPARSE:
623
                $this->ytick_factor=70;
624
                break;
625
            default:
626
                JpGraphError::RaiseL(18005,$densy);
627
                //("RadarPlot Unsupported Tick density: $densy");
628
        }
629
    }
630
 
631
    function SetPos($px,$py=0.5) {
632
        $this->SetCenter($px,$py);
633
    }
634
 
635
    function SetCenter($px,$py=0.5) {
636
        if( $px >= 0 && $px <= 1 ) {
637
        	$this->posx = $this->img->width*$px;
638
        }
639
        else {
640
        	$this->posx = $px;
641
        }
642
        if( $py >= 0 && $py <= 1 ) {
643
        	$this->posy = $this->img->height*$py;
644
        }
645
        else {
646
        	$this->posy = $py;
647
        }
648
    }
649
 
650
    function SetColor($aColor) {
651
        $this->SetMarginColor($aColor);
652
    }
653
 
654
    function SetTitles($aTitleArray) {
655
        $this->axis_title = $aTitleArray;
656
    }
657
 
658
    function Add($aPlot) {
659
    	if( $aPlot == null ) {
660
            JpGraphError::RaiseL(25010);//("Graph::Add() You tried to add a null plot to the graph.");
661
        }
662
        if( is_array($aPlot) && count($aPlot) > 0 ) {
663
            $cl = $aPlot[0];
664
        }
665
        else {
666
            $cl = $aPlot;
667
        }
668
 
669
        if( $cl instanceof Text ) $this->AddText($aPlot);
670
        elseif( class_exists('IconPlot',false) && ($cl instanceof IconPlot) ) $this->AddIcon($aPlot);
671
        else {
672
            $this->plots[] = $aPlot;
673
        }
674
    }
675
 
676
    function GetPlotsYMinMax($aPlots) {
677
        $min=$aPlots[0]->Min();
678
        $max=$aPlots[0]->Max();
679
        foreach( $this->plots as $p ) {
680
            $max=max($max,$p->Max());
681
            $min=min($min,$p->Min());
682
        }
683
        if( $min < 0 ) {
684
            JpGraphError::RaiseL(18006,$min);
685
            //("Minimum data $min (Radar plots should only be used when all data points > 0)");
686
        }
687
        return array($min,$max);
688
    }
689
 
690
    function StrokeIcons() {
691
    	if( $this->iIcons != null ) {
692
        	$n = count($this->iIcons);
693
        	for( $i=0; $i < $n; ++$i ) {
694
            	$this->iIcons[$i]->Stroke($this->img);
695
        	}
696
    	}
697
    }
698
 
699
	function StrokeTexts() {
700
        if( $this->texts != null ) {
701
			$n = count($this->texts);
702
            for( $i=0; $i < $n; ++$i ) {
703
                $this->texts[$i]->Stroke($this->img);
704
            }
705
        }
706
    }
707
 
708
    // Stroke the Radar graph
709
    function Stroke($aStrokeFileName='') {
710
 
711
        // If the filename is the predefined value = '_csim_special_'
712
        // we assume that the call to stroke only needs to do enough
713
        // to correctly generate the CSIM maps.
714
        // We use this variable to skip things we don't strictly need
715
        // to do to generate the image map to improve performance
716
        // a best we can. Therefor you will see a lot of tests !$_csim in the
717
        // code below.
718
        $_csim = ( $aStrokeFileName === _CSIM_SPECIALFILE );
719
 
720
        // We need to know if we have stroked the plot in the
721
        // GetCSIMareas. Otherwise the CSIM hasn't been generated
722
        // and in the case of GetCSIM called before stroke to generate
723
        // CSIM without storing an image to disk GetCSIM must call Stroke.
724
        $this->iHasStroked = true;
725
 
726
        $n = count($this->plots);
727
        // Set Y-scale
728
 
729
        if( !$this->yscale->IsSpecified() && count($this->plots) > 0 ) {
730
            list($min,$max) = $this->GetPlotsYMinMax($this->plots);
731
            $this->yscale->AutoScale($this->img,0,$max,$this->len/$this->ytick_factor);
732
        }
733
        elseif( $this->yscale->IsSpecified() &&
734
                ( $this->yscale->auto_ticks || !$this->yscale->ticks->IsSpecified()) ) {
735
 
736
            // The tick calculation will use the user suplied min/max values to determine
737
            // the ticks. If auto_ticks is false the exact user specifed min and max
738
            // values will be used for the scale.
739
            // If auto_ticks is true then the scale might be slightly adjusted
740
            // so that the min and max values falls on an even major step.
741
            $min = $this->yscale->scale[0];
742
            $max = $this->yscale->scale[1];
743
            $this->yscale->AutoScale($this->img,$min,$max,
744
                                     $this->len/$this->ytick_factor,
745
                                     $this->yscale->auto_ticks);
746
        }
747
 
748
        // Set start position end length of scale (in absolute pixels)
749
        $this->yscale->SetConstants($this->posx,$this->len);
750
 
751
        // We need as many axis as there are data points
752
        $nbrpnts=$this->plots[0]->GetCount();
753
 
754
        // If we have no titles just number the axis 1,2,3,...
755
        if( $this->axis_title==null ) {
756
            for($i=0; $i < $nbrpnts; ++$i ) {
757
                $this->axis_title[$i] = $i+1;
758
            }
759
        }
760
        elseif( count($this->axis_title) < $nbrpnts) {
761
            JpGraphError::RaiseL(18007);
762
            // ("Number of titles does not match number of points in plot.");
763
        }
764
        for( $i=0; $i < $n; ++$i ) {
765
            if( $nbrpnts != $this->plots[$i]->GetCount() ) {
766
                JpGraphError::RaiseL(18008);
767
                //("Each radar plot must have the same number of data points.");
768
            }
769
        }
770
 
771
        if( !$_csim ) {
772
        	if( $this->background_image != '' ) {
773
            	$this->StrokeFrameBackground();
774
        	}
775
        	else {
776
            	$this->StrokeFrame();
777
            	$this->StrokeBackgroundGrad();
778
        	}
779
        }
780
        $astep=2*M_PI/$nbrpnts;
781
 
782
		if( !$_csim ) {
783
     		if( $this->iIconDepth == DEPTH_BACK ) {
784
        		$this->StrokeIcons();
785
        	}
786
 
787
 
788
	        // Prepare legends
789
    	    for($i=0; $i < $n; ++$i) {
790
        	    $this->plots[$i]->Legend($this);
791
	        }
792
    	    $this->legend->Stroke($this->img);
793
        	$this->footer->Stroke($this->img);
794
		}
795
 
796
		if( !$_csim ) {
797
	        if( $this->grid_depth == DEPTH_BACK ) {
798
	            // Draw axis and grid
799
	            for( $i=0,$a=M_PI/2; $i < $nbrpnts; ++$i, $a += $astep ) {
800
	                $this->axis->Stroke($this->posy,$a,$grid[$i],$this->axis_title[$i],$i==0);
801
	            }
802
                $this->grid->Stroke($this->img,$grid);
803
	        }
804
            if( $this->iIconDepth == DEPTH_BACK ) {
805
                $this->StrokeIcons();
806
            }
807
 
808
		}
809
 
810
        // Plot points
811
        $a=M_PI/2;
812
        for($i=0; $i < $n; ++$i ) {
813
            $this->plots[$i]->Stroke($this->img, $this->posy, $this->yscale, $a);
814
        }
815
 
816
        if( !$_csim ) {
817
            if( $this->grid_depth != DEPTH_BACK ) {
818
                // Draw axis and grid
819
                for( $i=0,$a=M_PI/2; $i < $nbrpnts; ++$i, $a += $astep ) {
820
                   $this->axis->Stroke($this->posy,$a,$grid[$i],$this->axis_title[$i],$i==0);
821
                }
822
                $this->grid->Stroke($this->img,$grid);
823
            }
824
 
825
        	$this->StrokeTitles();
826
       		$this->StrokeTexts();
827
       		if( $this->iIconDepth == DEPTH_FRONT ) {
828
        		$this->StrokeIcons();
829
        	}
830
		}
831
 
832
        // Should we do any final image transformation
833
        if( $this->iImgTrans && !$_csim ) {
834
            if( !class_exists('ImgTrans',false) ) {
835
                require_once('jpgraph_imgtrans.php');
836
            }
837
 
838
            $tform = new ImgTrans($this->img->img);
839
            $this->img->img = $tform->Skew3D($this->iImgTransHorizon,$this->iImgTransSkewDist,
840
            $this->iImgTransDirection,$this->iImgTransHighQ,
841
            $this->iImgTransMinSize,$this->iImgTransFillColor,
842
            $this->iImgTransBorder);
843
        }
844
 
845
		if( !$_csim ) {
846
	        // If the filename is given as the special "__handle"
847
	        // then the image handler is returned and the image is NOT
848
	        // streamed back
849
	        if( $aStrokeFileName == _IMG_HANDLER ) {
850
	            return $this->img->img;
851
	        }
852
	        else {
853
	            // Finally stream the generated picture
854
	            $this->cache->PutAndStream($this->img,$this->cache_name,$this->inline,$aStrokeFileName);
855
	        }
856
		}
857
    }
858
} // Class
859
 
860
/* EOF */
861
?>