source: trunk/xgraph/jpgraph/jpgraph_polar.php@ 45

Last change on this file since 45 was 42, checked in by marrucho, 11 years ago
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1<?php
2/*=======================================================================
3 // File: JPGRAPH_POLAR.PHP
4 // Description: Polar plot extension for JpGraph
5 // Created: 2003-02-02
6 // Ver: $Id: jpgraph_polar.php 1796 2009-09-07 09:37:19Z ljp $
7 //
8 // Copyright (c) Asial Corporation. All rights reserved.
9 //========================================================================
10 */
11
12require_once ('jpgraph_plotmark.inc.php');
13require_once "jpgraph_log.php";
14
15
16define('POLAR_360',1);
17define('POLAR_180',2);
18
19//
20// Note. Don't attempt to make sense of this code.
21// In order not to have to be able to inherit the scaling code
22// from the main graph package we have had to make some "tricks" since
23// the original scaling and axis was not designed to do what is
24// required here.
25// There were two option. 1: Re-implement everything and get a clean design
26// and 2: do some "small" trickery and be able to inherit most of
27// the functionlity from the main graph package.
28// We choose 2: here in order to save some time.
29//
30
31//--------------------------------------------------------------------------
32// class PolarPlot
33//--------------------------------------------------------------------------
34class PolarPlot {
35 public $line_style='solid',$mark;
36 public $legendcsimtarget='';
37 public $legendcsimalt='';
38 public $legend="";
39 public $csimtargets=array(); // Array of targets for CSIM
40 public $csimareas=""; // Resultant CSIM area tags
41 public $csimalts=null; // ALT:s for corresponding target
42 public $scale=null;
43 private $numpoints=0;
44 private $iColor='navy',$iFillColor='';
45 private $iLineWeight=1;
46 private $coord=null;
47
48 function __construct($aData) {
49 $n = count($aData);
50 if( $n & 1 ) {
51 JpGraphError::RaiseL(17001);
52 //('Polar plots must have an even number of data point. Each data point is a tuple (angle,radius).');
53 }
54 $this->numpoints = $n/2;
55 $this->coord = $aData;
56 $this->mark = new PlotMark();
57 }
58
59 function SetWeight($aWeight) {
60 $this->iLineWeight = $aWeight;
61 }
62
63 function SetColor($aColor){
64 $this->iColor = $aColor;
65 }
66
67 function SetFillColor($aColor){
68 $this->iFillColor = $aColor;
69 }
70
71 function Max() {
72 $m = $this->coord[1];
73 $i=1;
74 while( $i < $this->numpoints ) {
75 $m = max($m,$this->coord[2*$i+1]);
76 ++$i;
77 }
78 return $m;
79 }
80 // Set href targets for CSIM
81 function SetCSIMTargets($aTargets,$aAlts=null) {
82 $this->csimtargets=$aTargets;
83 $this->csimalts=$aAlts;
84 }
85
86 // Get all created areas
87 function GetCSIMareas() {
88 return $this->csimareas;
89 }
90
91 function SetLegend($aLegend,$aCSIM="",$aCSIMAlt="") {
92 $this->legend = $aLegend;
93 $this->legendcsimtarget = $aCSIM;
94 $this->legendcsimalt = $aCSIMAlt;
95 }
96
97 // Private methods
98
99 function Legend($aGraph) {
100 $color = $this->iColor ;
101 if( $this->legend != "" ) {
102 if( $this->iFillColor!='' ) {
103 $color = $this->iFillColor;
104 $aGraph->legend->Add($this->legend,$color,$this->mark,0,
105 $this->legendcsimtarget,$this->legendcsimalt);
106 }
107 else {
108 $aGraph->legend->Add($this->legend,$color,$this->mark,$this->line_style,
109 $this->legendcsimtarget,$this->legendcsimalt);
110 }
111 }
112 }
113
114 function Stroke($img,$scale) {
115
116 $i=0;
117 $p=array();
118 $this->csimareas='';
119 while($i < $this->numpoints) {
120 list($x1,$y1) = $scale->PTranslate($this->coord[2*$i],$this->coord[2*$i+1]);
121 $p[2*$i] = $x1;
122 $p[2*$i+1] = $y1;
123
124 if( isset($this->csimtargets[$i]) ) {
125 $this->mark->SetCSIMTarget($this->csimtargets[$i]);
126 $this->mark->SetCSIMAlt($this->csimalts[$i]);
127 $this->mark->SetCSIMAltVal($this->coord[2*$i], $this->coord[2*$i+1]);
128 $this->mark->Stroke($img,$x1,$y1);
129 $this->csimareas .= $this->mark->GetCSIMAreas();
130 }
131 else {
132 $this->mark->Stroke($img,$x1,$y1);
133 }
134
135 ++$i;
136 }
137
138 if( $this->iFillColor != '' ) {
139 $img->SetColor($this->iFillColor);
140 $img->FilledPolygon($p);
141 }
142 $img->SetLineWeight($this->iLineWeight);
143 $img->SetColor($this->iColor);
144 $img->Polygon($p,$this->iFillColor!='');
145 }
146}
147
148//--------------------------------------------------------------------------
149// class PolarAxis
150//--------------------------------------------------------------------------
151class PolarAxis extends Axis {
152 private $angle_step=15,$angle_color='lightgray',$angle_label_color='black';
153 private $angle_fontfam=FF_FONT1,$angle_fontstyle=FS_NORMAL,$angle_fontsize=10;
154 private $angle_fontcolor = 'navy';
155 private $gridminor_color='lightgray',$gridmajor_color='lightgray';
156 private $show_minor_grid = false, $show_major_grid = true ;
157 private $show_angle_mark=true, $show_angle_grid=true, $show_angle_label=true;
158 private $angle_tick_len=3, $angle_tick_len2=3, $angle_tick_color='black';
159 private $show_angle_tick=true;
160 private $radius_tick_color='black';
161
162 function __construct($img,$aScale) {
163 parent::__construct($img,$aScale);
164 }
165
166 function ShowAngleDegreeMark($aFlg=true) {
167 $this->show_angle_mark = $aFlg;
168 }
169
170 function SetAngleStep($aStep) {
171 $this->angle_step=$aStep;
172 }
173
174 function HideTicks($aFlg=true,$aAngleFlg=true) {
175 parent::HideTicks($aFlg,$aFlg);
176 $this->show_angle_tick = !$aAngleFlg;
177 }
178
179 function ShowAngleLabel($aFlg=true) {
180 $this->show_angle_label = $aFlg;
181 }
182
183 function ShowGrid($aMajor=true,$aMinor=false,$aAngle=true) {
184 $this->show_minor_grid = $aMinor;
185 $this->show_major_grid = $aMajor;
186 $this->show_angle_grid = $aAngle ;
187 }
188
189 function SetAngleFont($aFontFam,$aFontStyle=FS_NORMAL,$aFontSize=10) {
190 $this->angle_fontfam = $aFontFam;
191 $this->angle_fontstyle = $aFontStyle;
192 $this->angle_fontsize = $aFontSize;
193 }
194
195 function SetColor($aColor,$aRadColor='',$aAngleColor='') {
196 if( $aAngleColor == '' )
197 $aAngleColor=$aColor;
198 parent::SetColor($aColor,$aRadColor);
199 $this->angle_fontcolor = $aAngleColor;
200 }
201
202 function SetGridColor($aMajorColor,$aMinorColor='',$aAngleColor='') {
203 if( $aMinorColor == '' )
204 $aMinorColor = $aMajorColor;
205 if( $aAngleColor == '' )
206 $aAngleColor = $aMajorColor;
207
208 $this->gridminor_color = $aMinorColor;
209 $this->gridmajor_color = $aMajorColor;
210 $this->angle_color = $aAngleColor;
211 }
212
213 function SetTickColors($aRadColor,$aAngleColor='') {
214 $this->radius_tick_color = $aRadColor;
215 $this->angle_tick_color = $aAngleColor;
216 }
217
218 // Private methods
219 function StrokeGrid($pos) {
220 $x = round($this->img->left_margin + $this->img->plotwidth/2);
221 $this->scale->ticks->Stroke($this->img,$this->scale,$pos);
222
223 // Stroke the minor arcs
224 $pmin = array();
225 $p = $this->scale->ticks->ticks_pos;
226 $n = count($p);
227 $i = 0;
228 $this->img->SetColor($this->gridminor_color);
229 while( $i < $n ) {
230 $r = $p[$i]-$x+1;
231 $pmin[]=$r;
232 if( $this->show_minor_grid ) {
233 $this->img->Circle($x,$pos,$r);
234 }
235 $i++;
236 }
237
238 $limit = max($this->img->plotwidth,$this->img->plotheight)*1.4 ;
239 while( $r < $limit ) {
240 $off = $r;
241 $i=1;
242 $r = $off + round($p[$i]-$x+1);
243 while( $r < $limit && $i < $n ) {
244 $r = $off+$p[$i]-$x;
245 $pmin[]=$r;
246 if( $this->show_minor_grid ) {
247 $this->img->Circle($x,$pos,$r);
248 }
249 $i++;
250 }
251 }
252
253 // Stroke the major arcs
254 if( $this->show_major_grid ) {
255 // First determine how many minor step on
256 // every major step. We have recorded the minor radius
257 // in pmin and use these values. This is done in order
258 // to avoid rounding errors if we were to recalculate the
259 // different major radius.
260 $pmaj = $this->scale->ticks->maj_ticks_pos;
261 $p = $this->scale->ticks->ticks_pos;
262 if( $this->scale->name == 'lin' ) {
263 $step=round(($pmaj[1] - $pmaj[0])/($p[1] - $p[0]));
264 }
265 else {
266 $step=9;
267 }
268 $n = round(count($pmin)/$step);
269 $i = 0;
270 $this->img->SetColor($this->gridmajor_color);
271 $limit = max($this->img->plotwidth,$this->img->plotheight)*1.4 ;
272 $off = $r;
273 $i=0;
274 $r = $pmin[$i*$step];
275 while( $r < $limit && $i < $n ) {
276 $r = $pmin[$i*$step];
277 $this->img->Circle($x,$pos,$r);
278 $i++;
279 }
280 }
281
282 // Draw angles
283 if( $this->show_angle_grid ) {
284 $this->img->SetColor($this->angle_color);
285 $d = max($this->img->plotheight,$this->img->plotwidth)*1.4 ;
286 $a = 0;
287 $p = $this->scale->ticks->ticks_pos;
288 $start_radius = $p[1]-$x;
289 while( $a < 360 ) {
290 if( $a == 90 || $a == 270 ) {
291 // Make sure there are no rounding problem with
292 // exactly vertical lines
293 $this->img->Line($x+$start_radius*cos($a/180*M_PI)+1,
294 $pos-$start_radius*sin($a/180*M_PI),
295 $x+$start_radius*cos($a/180*M_PI)+1,
296 $pos-$d*sin($a/180*M_PI));
297
298 }
299 else {
300 $this->img->Line($x+$start_radius*cos($a/180*M_PI)+1,
301 $pos-$start_radius*sin($a/180*M_PI),
302 $x+$d*cos($a/180*M_PI),
303 $pos-$d*sin($a/180*M_PI));
304 }
305 $a += $this->angle_step;
306 }
307 }
308 }
309
310 function StrokeAngleLabels($pos,$type) {
311
312 if( !$this->show_angle_label )
313 return;
314
315 $x0 = round($this->img->left_margin+$this->img->plotwidth/2)+1;
316
317 $d = max($this->img->plotwidth,$this->img->plotheight)*1.42;
318 $a = $this->angle_step;
319 $t = new Text();
320 $t->SetColor($this->angle_fontcolor);
321 $t->SetFont($this->angle_fontfam,$this->angle_fontstyle,$this->angle_fontsize);
322 $xright = $this->img->width - $this->img->right_margin;
323 $ytop = $this->img->top_margin;
324 $xleft = $this->img->left_margin;
325 $ybottom = $this->img->height - $this->img->bottom_margin;
326 $ha = 'left';
327 $va = 'center';
328 $w = $this->img->plotwidth/2;
329 $h = $this->img->plotheight/2;
330 $xt = $x0; $yt = $pos;
331 $margin=5;
332
333 $tl = $this->angle_tick_len ; // Outer len
334 $tl2 = $this->angle_tick_len2 ; // Interior len
335
336 $this->img->SetColor($this->angle_tick_color);
337 $rot90 = $this->img->a == 90 ;
338
339 if( $type == POLAR_360 ) {
340
341 // Corner angles of the four corners
342 $ca1 = atan($h/$w)/M_PI*180;
343 $ca2 = 180-$ca1;
344 $ca3 = $ca1+180;
345 $ca4 = 360-$ca1;
346 $end = 360;
347
348 while( $a < $end ) {
349 $ca = cos($a/180*M_PI);
350 $sa = sin($a/180*M_PI);
351 $x = $d*$ca;
352 $y = $d*$sa;
353 $xt=1000;$yt=1000;
354 if( $a <= $ca1 || $a >= $ca4 ) {
355 $yt = $pos - $w * $y/$x;
356 $xt = $xright + $margin;
357 if( $rot90 ) {
358 $ha = 'center';
359 $va = 'top';
360 }
361 else {
362 $ha = 'left';
363 $va = 'center';
364 }
365 $x1=$xright-$tl2; $x2=$xright+$tl;
366 $y1=$y2=$yt;
367 }
368 elseif( $a > $ca1 && $a < $ca2 ) {
369 $xt = $x0 + $h * $x/$y;
370 $yt = $ytop - $margin;
371 if( $rot90 ) {
372 $ha = 'left';
373 $va = 'center';
374 }
375 else {
376 $ha = 'center';
377 $va = 'bottom';
378 }
379 $y1=$ytop+$tl2;$y2=$ytop-$tl;
380 $x1=$x2=$xt;
381 }
382 elseif( $a >= $ca2 && $a <= $ca3 ) {
383 $yt = $pos + $w * $y/$x;
384 $xt = $xleft - $margin;
385 if( $rot90 ) {
386 $ha = 'center';
387 $va = 'bottom';
388 }
389 else {
390 $ha = 'right';
391 $va = 'center';
392 }
393 $x1=$xleft+$tl2;$x2=$xleft-$tl;
394 $y1=$y2=$yt;
395 }
396 else {
397 $xt = $x0 - $h * $x/$y;
398 $yt = $ybottom + $margin;
399 if( $rot90 ) {
400 $ha = 'right';
401 $va = 'center';
402 }
403 else {
404 $ha = 'center';
405 $va = 'top';
406 }
407 $y1=$ybottom-$tl2;$y2=$ybottom+$tl;
408 $x1=$x2=$xt;
409 }
410 if( $a != 0 && $a != 180 ) {
411 $t->Align($ha,$va);
412 if( $this->scale->clockwise ) {
413 $t->Set(360-$a);
414 }
415 else {
416 $t->Set($a);
417 }
418 if( $this->show_angle_mark && $t->font_family > 4 ) {
419 $a .= SymChar::Get('degree');
420 }
421 $t->Stroke($this->img,$xt,$yt);
422 if( $this->show_angle_tick ) {
423 $this->img->Line($x1,$y1,$x2,$y2);
424 }
425 }
426 $a += $this->angle_step;
427 }
428 }
429 else {
430 // POLAR_HALF
431 $ca1 = atan($h/$w*2)/M_PI*180;
432 $ca2 = 180-$ca1;
433 $end = 180;
434 while( $a < $end ) {
435 $ca = cos($a/180*M_PI);
436 $sa = sin($a/180*M_PI);
437 $x = $d*$ca;
438 $y = $d*$sa;
439 if( $a <= $ca1 ) {
440 $yt = $pos - $w * $y/$x;
441 $xt = $xright + $margin;
442 if( $rot90 ) {
443 $ha = 'center';
444 $va = 'top';
445 }
446 else {
447 $ha = 'left';
448 $va = 'center';
449 }
450 $x1=$xright-$tl2; $x2=$xright+$tl;
451 $y1=$y2=$yt;
452 }
453 elseif( $a > $ca1 && $a < $ca2 ) {
454 $xt = $x0 + 2*$h * $x/$y;
455 $yt = $ytop - $margin;
456 if( $rot90 ) {
457 $ha = 'left';
458 $va = 'center';
459 }
460 else {
461 $ha = 'center';
462 $va = 'bottom';
463 }
464 $y1=$ytop+$tl2;$y2=$ytop-$tl;
465 $x1=$x2=$xt;
466 }
467 elseif( $a >= $ca2 ) {
468 $yt = $pos + $w * $y/$x;
469 $xt = $xleft - $margin;
470 if( $rot90 ) {
471 $ha = 'center';
472 $va = 'bottom';
473 }
474 else {
475 $ha = 'right';
476 $va = 'center';
477 }
478 $x1=$xleft+$tl2;$x2=$xleft-$tl;
479 $y1=$y2=$yt;
480 }
481 $t->Align($ha,$va);
482 if( $this->show_angle_mark && $t->font_family > 4 ) {
483 $a .= SymChar::Get('degree');
484 }
485 $t->Set($a);
486 $t->Stroke($this->img,$xt,$yt);
487 if( $this->show_angle_tick ) {
488 $this->img->Line($x1,$y1,$x2,$y2);
489 }
490 $a += $this->angle_step;
491 }
492 }
493 }
494
495 function Stroke($pos,$dummy=true) {
496
497 $this->img->SetLineWeight($this->weight);
498 $this->img->SetColor($this->color);
499 $this->img->SetFont($this->font_family,$this->font_style,$this->font_size);
500 if( !$this->hide_line ) {
501 $this->img->FilledRectangle($this->img->left_margin,$pos,
502 $this->img->width-$this->img->right_margin,
503 $pos+$this->weight-1);
504 }
505 $y=$pos+$this->img->GetFontHeight()+$this->title_margin+$this->title->margin;
506 if( $this->title_adjust=="high" ) {
507 $this->title->SetPos($this->img->width-$this->img->right_margin,$y,"right","top");
508 }
509 elseif( $this->title_adjust=="middle" || $this->title_adjust=="center" ) {
510 $this->title->SetPos(($this->img->width-$this->img->left_margin-$this->img->right_margin)/2+$this->img->left_margin,
511 $y,"center","top");
512 }
513 elseif($this->title_adjust=="low") {
514 $this->title->SetPos($this->img->left_margin,$y,"left","top");
515 }
516 else {
517 JpGraphError::RaiseL(17002,$this->title_adjust);
518 //('Unknown alignment specified for X-axis title. ('.$this->title_adjust.')');
519 }
520
521
522 if (!$this->hide_labels) {
523 $this->StrokeLabels($pos,false);
524 }
525 $this->img->SetColor($this->radius_tick_color);
526 $this->scale->ticks->Stroke($this->img,$this->scale,$pos);
527
528 //
529 // Mirror the positions for the left side of the scale
530 //
531 $mid = 2*($this->img->left_margin+$this->img->plotwidth/2);
532 $n = count($this->scale->ticks->ticks_pos);
533 $i=0;
534 while( $i < $n ) {
535 $this->scale->ticks->ticks_pos[$i] =
536 $mid-$this->scale->ticks->ticks_pos[$i] ;
537 ++$i;
538 }
539
540 $n = count($this->scale->ticks->maj_ticks_pos);
541 $i=0;
542 while( $i < $n ) {
543 $this->scale->ticks->maj_ticks_pos[$i] =
544 $mid-$this->scale->ticks->maj_ticks_pos[$i] ;
545 ++$i;
546 }
547
548 $n = count($this->scale->ticks->maj_ticklabels_pos);
549 $i=1;
550 while( $i < $n ) {
551 $this->scale->ticks->maj_ticklabels_pos[$i] =
552 $mid-$this->scale->ticks->maj_ticklabels_pos[$i] ;
553 ++$i;
554 }
555
556 // Draw the left side of the scale
557 $n = count($this->scale->ticks->ticks_pos);
558 $yu = $pos - $this->scale->ticks->direction*$this->scale->ticks->GetMinTickAbsSize();
559
560
561 // Minor ticks
562 if( ! $this->scale->ticks->supress_minor_tickmarks ) {
563 $i=1;
564 while( $i < $n/2 ) {
565 $x = round($this->scale->ticks->ticks_pos[$i]) ;
566 $this->img->Line($x,$pos,$x,$yu);
567 ++$i;
568 }
569 }
570
571 $n = count($this->scale->ticks->maj_ticks_pos);
572 $yu = $pos - $this->scale->ticks->direction*$this->scale->ticks->GetMajTickAbsSize();
573
574
575 // Major ticks
576 if( ! $this->scale->ticks->supress_tickmarks ) {
577 $i=1;
578 while( $i < $n/2 ) {
579 $x = round($this->scale->ticks->maj_ticks_pos[$i]) ;
580 $this->img->Line($x,$pos,$x,$yu);
581 ++$i;
582 }
583 }
584 if (!$this->hide_labels) {
585 $this->StrokeLabels($pos,false);
586 }
587 $this->title->Stroke($this->img);
588 }
589}
590
591class PolarScale extends LinearScale {
592 private $graph;
593 public $clockwise=false;
594
595 function __construct($aMax,$graph,$aClockwise) {
596 parent::__construct(0,$aMax,'x');
597 $this->graph = $graph;
598 $this->clockwise = $aClockwise;
599 }
600
601 function SetClockwise($aFlg) {
602 $this->clockwise = $aFlg;
603 }
604
605 function _Translate($v) {
606 return parent::Translate($v);
607 }
608
609 function PTranslate($aAngle,$aRad) {
610
611 $m = $this->scale[1];
612 $w = $this->graph->img->plotwidth/2;
613 $aRad = $aRad/$m*$w;
614
615 $a = $aAngle/180 * M_PI;
616 if( $this->clockwise ) {
617 $a = 2*M_PI-$a;
618 }
619
620 $x = cos($a) * $aRad;
621 $y = sin($a) * $aRad;
622
623 $x += $this->_Translate(0);
624
625 if( $this->graph->iType == POLAR_360 ) {
626 $y = ($this->graph->img->top_margin + $this->graph->img->plotheight/2) - $y;
627 }
628 else {
629 $y = ($this->graph->img->top_margin + $this->graph->img->plotheight) - $y;
630 }
631 return array($x,$y);
632 }
633}
634
635class PolarLogScale extends LogScale {
636 private $graph;
637 public $clockwise=false;
638
639 function __construct($aMax,$graph,$aClockwise=false) {
640 parent::__construct(0,$aMax,'x');
641 $this->graph = $graph;
642 $this->ticks->SetLabelLogType(LOGLABELS_MAGNITUDE);
643 $this->clockwise = $aClockwise;
644
645 }
646
647 function SetClockwise($aFlg) {
648 $this->clockwise = $aFlg;
649 }
650
651 function PTranslate($aAngle,$aRad) {
652
653 if( $aRad == 0 )
654 $aRad = 1;
655 $aRad = log10($aRad);
656 $m = $this->scale[1];
657 $w = $this->graph->img->plotwidth/2;
658 $aRad = $aRad/$m*$w;
659
660 $a = $aAngle/180 * M_PI;
661 if( $this->clockwise ) {
662 $a = 2*M_PI-$a;
663 }
664
665 $x = cos( $a ) * $aRad;
666 $y = sin( $a ) * $aRad;
667
668 $x += $w+$this->graph->img->left_margin;//$this->_Translate(0);
669 if( $this->graph->iType == POLAR_360 ) {
670 $y = ($this->graph->img->top_margin + $this->graph->img->plotheight/2) - $y;
671 }
672 else {
673 $y = ($this->graph->img->top_margin + $this->graph->img->plotheight) - $y;
674 }
675 return array($x,$y);
676 }
677}
678
679class PolarGraph extends Graph {
680 public $scale;
681 public $axis;
682 public $iType=POLAR_360;
683 private $iClockwise=false;
684
685 function __construct($aWidth=300,$aHeight=200,$aCachedName="",$aTimeOut=0,$aInline=true) {
686 parent::__construct($aWidth,$aHeight,$aCachedName,$aTimeOut,$aInline) ;
687 $this->SetDensity(TICKD_DENSE);
688 $this->SetBox();
689 $this->SetMarginColor('white');
690 }
691
692 function SetDensity($aDense) {
693 $this->SetTickDensity(TICKD_NORMAL,$aDense);
694 }
695
696 function SetClockwise($aFlg) {
697 $this->scale->SetClockwise($aFlg);
698 }
699
700 function Set90AndMargin($lm=0,$rm=0,$tm=0,$bm=0) {
701 $adj = ($this->img->height - $this->img->width)/2;
702 $this->SetAngle(90);
703 $lm2 = -$adj + ($lm-$rm+$tm+$bm)/2;
704 $rm2 = -$adj + (-$lm+$rm+$tm+$bm)/2;
705 $tm2 = $adj + ($tm-$bm+$lm+$rm)/2;
706 $bm2 = $adj + (-$tm+$bm+$lm+$rm)/2;
707 $this->SetMargin($lm2, $rm2, $tm2, $bm2);
708 $this->axis->SetLabelAlign('right','center');
709 }
710
711 function SetScale($aScale,$rmax=0,$dummy1=1,$dummy2=1,$dummy3=1) {
712 if( $aScale == 'lin' ) {
713 $this->scale = new PolarScale($rmax,$this,$this->iClockwise);
714 }
715 elseif( $aScale == 'log' ) {
716 $this->scale = new PolarLogScale($rmax,$this,$this->iClockwise);
717 }
718 else {
719 JpGraphError::RaiseL(17004);//('Unknown scale type for polar graph. Must be "lin" or "log"');
720 }
721
722 $this->axis = new PolarAxis($this->img,$this->scale);
723 $this->SetMargin(40,40,50,40);
724 }
725
726 function SetType($aType) {
727 $this->iType = $aType;
728 }
729
730 function SetPlotSize($w,$h) {
731 $this->SetMargin(($this->img->width-$w)/2,($this->img->width-$w)/2,
732 ($this->img->height-$h)/2,($this->img->height-$h)/2);
733 }
734
735 // Private methods
736 function GetPlotsMax() {
737 $n = count($this->plots);
738 $m = $this->plots[0]->Max();
739 $i=1;
740 while($i < $n) {
741 $m = max($this->plots[$i]->Max(),$m);
742 ++$i;
743 }
744 return $m;
745 }
746
747 function Stroke($aStrokeFileName="") {
748
749 // Start by adjusting the margin so that potential titles will fit.
750 $this->AdjustMarginsForTitles();
751
752 // If the filename is the predefined value = '_csim_special_'
753 // we assume that the call to stroke only needs to do enough
754 // to correctly generate the CSIM maps.
755 // We use this variable to skip things we don't strictly need
756 // to do to generate the image map to improve performance
757 // a best we can. Therefor you will see a lot of tests !$_csim in the
758 // code below.
759 $_csim = ($aStrokeFileName===_CSIM_SPECIALFILE);
760
761 // We need to know if we have stroked the plot in the
762 // GetCSIMareas. Otherwise the CSIM hasn't been generated
763 // and in the case of GetCSIM called before stroke to generate
764 // CSIM without storing an image to disk GetCSIM must call Stroke.
765 $this->iHasStroked = true;
766
767 //Check if we should autoscale axis
768 if( !$this->scale->IsSpecified() && count($this->plots)>0 ) {
769 $max = $this->GetPlotsMax();
770 $t1 = $this->img->plotwidth;
771 $this->img->plotwidth /= 2;
772 $t2 = $this->img->left_margin;
773 $this->img->left_margin += $this->img->plotwidth+1;
774 $this->scale->AutoScale($this->img,0,$max,
775 $this->img->plotwidth/$this->xtick_factor/2);
776 $this->img->plotwidth = $t1;
777 $this->img->left_margin = $t2;
778 }
779 else {
780 // The tick calculation will use the user suplied min/max values to determine
781 // the ticks. If auto_ticks is false the exact user specifed min and max
782 // values will be used for the scale.
783 // If auto_ticks is true then the scale might be slightly adjusted
784 // so that the min and max values falls on an even major step.
785 //$min = 0;
786 $max = $this->scale->scale[1];
787 $t1 = $this->img->plotwidth;
788 $this->img->plotwidth /= 2;
789 $t2 = $this->img->left_margin;
790 $this->img->left_margin += $this->img->plotwidth+1;
791 $this->scale->AutoScale($this->img,0,$max,
792 $this->img->plotwidth/$this->xtick_factor/2);
793 $this->img->plotwidth = $t1;
794 $this->img->left_margin = $t2;
795 }
796
797 if( $this->iType == POLAR_180 ) {
798 $pos = $this->img->height - $this->img->bottom_margin;
799 }
800 else {
801 $pos = $this->img->plotheight/2 + $this->img->top_margin;
802 }
803
804 if( !$_csim ) {
805 $this->StrokePlotArea();
806 }
807
808 $this->iDoClipping = true;
809
810 if( $this->iDoClipping ) {
811 $oldimage = $this->img->CloneCanvasH();
812 }
813
814 if( !$_csim ) {
815 $this->axis->StrokeGrid($pos);
816 }
817
818 // Stroke all plots for Y1 axis
819 for($i=0; $i < count($this->plots); ++$i) {
820 $this->plots[$i]->Stroke($this->img,$this->scale);
821 }
822
823
824 if( $this->iDoClipping ) {
825 // Clipping only supports graphs at 0 and 90 degrees
826 if( $this->img->a == 0 ) {
827 $this->img->CopyCanvasH($oldimage,$this->img->img,
828 $this->img->left_margin,$this->img->top_margin,
829 $this->img->left_margin,$this->img->top_margin,
830 $this->img->plotwidth+1,$this->img->plotheight+1);
831 }
832 elseif( $this->img->a == 90 ) {
833 $adj1 = round(($this->img->height - $this->img->width)/2);
834 $adj2 = round(($this->img->width - $this->img->height)/2);
835 $lm = $this->img->left_margin;
836 $rm = $this->img->right_margin;
837 $tm = $this->img->top_margin;
838 $bm = $this->img->bottom_margin;
839 $this->img->CopyCanvasH($oldimage,$this->img->img,
840 $adj2 + round(($lm-$rm+$tm+$bm)/2),
841 $adj1 + round(($tm-$bm+$lm+$rm)/2),
842 $adj2 + round(($lm-$rm+$tm+$bm)/2),
843 $adj1 + round(($tm-$bm+$lm+$rm)/2),
844 $this->img->plotheight+1,
845 $this->img->plotwidth+1);
846 }
847 $this->img->Destroy();
848 $this->img->SetCanvasH($oldimage);
849 }
850
851 if( !$_csim ) {
852 $this->axis->Stroke($pos);
853 $this->axis->StrokeAngleLabels($pos,$this->iType);
854 }
855
856 if( !$_csim ) {
857 $this->StrokePlotBox();
858 $this->footer->Stroke($this->img);
859
860 // The titles and legends never gets rotated so make sure
861 // that the angle is 0 before stroking them
862 $aa = $this->img->SetAngle(0);
863 $this->StrokeTitles();
864 }
865
866 for($i=0; $i < count($this->plots) ; ++$i ) {
867 $this->plots[$i]->Legend($this);
868 }
869
870 $this->legend->Stroke($this->img);
871
872 if( !$_csim ) {
873
874 $this->StrokeTexts();
875 $this->img->SetAngle($aa);
876
877 // Draw an outline around the image map
878 if(_JPG_DEBUG)
879 $this->DisplayClientSideaImageMapAreas();
880
881 // If the filename is given as the special "__handle"
882 // then the image handler is returned and the image is NOT
883 // streamed back
884 if( $aStrokeFileName == _IMG_HANDLER ) {
885 return $this->img->img;
886 }
887 else {
888 // Finally stream the generated picture
889 $this->cache->PutAndStream($this->img,$this->cache_name,$this->inline,$aStrokeFileName);
890 }
891 }
892 }
893}
894
895
896
897?>
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