source: trunk/client/modules/Elezioni/grafici/jpgraph_pie3d.php@ 2

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1<?php
2/*=======================================================================
3// File: JPGRAPH_PIE3D.PHP
4// Description: 3D Pie plot extension for JpGraph
5// Created: 2001-03-24
6// Ver: $Id: jpgraph_pie3d.php 956 2007-11-17 13:19:20Z ljp $
7//
8// Copyright (c) Aditus Consulting. All rights reserved.
9//========================================================================
10*/
11
12//===================================================
13// CLASS PiePlot3D
14// Description: Plots a 3D pie with a specified projection
15// angle between 20 and 70 degrees.
16//===================================================
17class PiePlot3D extends PiePlot {
18 private $labelhintcolor="red",$showlabelhint=true;
19 private $angle=50;
20 private $edgecolor="", $edgeweight=1;
21 private $iThickness=false;
22
23//---------------
24// CONSTRUCTOR
25 function PiePlot3d($data) {
26 $this->radius = 0.5;
27 $this->data = $data;
28 $this->title = new Text("");
29 $this->title->SetFont(FF_FONT1,FS_BOLD);
30 $this->value = new DisplayValue();
31 $this->value->Show();
32 $this->value->SetFormat('%.0f%%');
33 }
34
35//---------------
36// PUBLIC METHODS
37
38 // Set label arrays
39 function SetLegends($aLegend) {
40 $this->legends = array_reverse(array_slice($aLegend,0,count($this->data)));
41 }
42
43 function SetSliceColors($aColors) {
44 $this->setslicecolors = $aColors;
45 }
46
47 function Legend($aGraph) {
48 parent::Legend($aGraph);
49 $aGraph->legend->txtcol = array_reverse($aGraph->legend->txtcol);
50 }
51
52 function SetCSIMTargets($aTargets,$aAlts='',$aWinTargets='') {
53 $this->csimtargets = $aTargets;
54 $this->csimwintargets = $aWinTargets;
55 $this->csimalts = $aAlts;
56 }
57
58 // Should the slices be separated by a line? If color is specified as "" no line
59 // will be used to separate pie slices.
60 function SetEdge($aColor='black',$aWeight=1) {
61 $this->edgecolor = $aColor;
62 $this->edgeweight = $aWeight;
63 }
64
65 // Dummy function to make Pie3D behave in a similair way to 2D
66 function ShowBorder($exterior=true,$interior=true) {
67 JpGraphError::RaiseL(14001);
68//('Pie3D::ShowBorder() . Deprecated function. Use Pie3D::SetEdge() to control the edges around slices.');
69 }
70
71 // Specify projection angle for 3D in degrees
72 // Must be between 20 and 70 degrees
73 function SetAngle($a) {
74 if( $a<5 || $a>90 )
75 JpGraphError::RaiseL(14002);
76//("PiePlot3D::SetAngle() 3D Pie projection angle must be between 5 and 85 degrees.");
77 else
78 $this->angle = $a;
79 }
80
81 function Add3DSliceToCSIM($i,$xc,$yc,$height,$width,$thick,$sa,$ea) { //Slice number, ellipse centre (x,y), height, width, start angle, end angle
82
83 $sa *= M_PI/180;
84 $ea *= M_PI/180;
85
86 //add coordinates of the centre to the map
87 $coords = "$xc, $yc";
88
89 //add coordinates of the first point on the arc to the map
90 $xp = floor($width*cos($sa)/2+$xc);
91 $yp = floor($yc-$height*sin($sa)/2);
92 $coords.= ", $xp, $yp";
93
94 //If on the front half, add the thickness offset
95 if ($sa >= M_PI && $sa <= 2*M_PI*1.01) {
96 $yp = floor($yp+$thick);
97 $coords.= ", $xp, $yp";
98 }
99
100 //add coordinates every 0.2 radians
101 $a=$sa+0.2;
102 while ($a<$ea) {
103 $xp = floor($width*cos($a)/2+$xc);
104 if ($a >= M_PI && $a <= 2*M_PI*1.01) {
105 $yp = floor($yc-($height*sin($a)/2)+$thick);
106 } else {
107 $yp = floor($yc-$height*sin($a)/2);
108 }
109 $coords.= ", $xp, $yp";
110 $a += 0.2;
111 }
112
113 //Add the last point on the arc
114 $xp = floor($width*cos($ea)/2+$xc);
115 $yp = floor($yc-$height*sin($ea)/2);
116
117
118 if ($ea >= M_PI && $ea <= 2*M_PI*1.01) {
119 $coords.= ", $xp, ".floor($yp+$thick);
120 }
121 $coords.= ", $xp, $yp";
122 $alt='';
123
124 if( !empty($this->csimtargets[$i]) ) {
125 $this->csimareas .= "<area shape=\"poly\" coords=\"$coords\" href=\"".$this->csimtargets[$i]."\"";
126
127 if( !empty($this->csimwintargets[$i]) ) {
128 $this->csimareas .= " target=\"".$this->csimwintargets[$i]."\" ";
129 }
130
131 if( !empty($this->csimalts[$i]) ) {
132 $tmp=sprintf($this->csimalts[$i],$this->data[$i]);
133 $this->csimareas .= "alt=\"$tmp\" title=\"$tmp\" ";
134 }
135 $this->csimareas .= " />\n";
136 }
137
138 }
139
140 function SetLabels($aLabels,$aLblPosAdj="auto") {
141 $this->labels = $aLabels;
142 $this->ilabelposadj=$aLblPosAdj;
143 }
144
145
146 // Distance from the pie to the labels
147 function SetLabelMargin($m) {
148 $this->value->SetMargin($m);
149 }
150
151 // Show a thin line from the pie to the label for a specific slice
152 function ShowLabelHint($f=true) {
153 $this->showlabelhint=$f;
154 }
155
156 // Set color of hint line to label for each slice
157 function SetLabelHintColor($c) {
158 $this->labelhintcolor=$c;
159 }
160
161 function SetHeight($aHeight) {
162 $this->iThickness = $aHeight;
163 }
164
165
166// Normalize Angle between 0-360
167 function NormAngle($a) {
168 // Normalize anle to 0 to 2M_PI
169 //
170 if( $a > 0 ) {
171 while($a > 360) $a -= 360;
172 }
173 else {
174 while($a < 0) $a += 360;
175 }
176 if( $a < 0 )
177 $a = 360 + $a;
178
179 if( $a == 360 ) $a=0;
180 return $a;
181 }
182
183
184
185// Draw one 3D pie slice at position ($xc,$yc) with height $z
186 function Pie3DSlice($img,$xc,$yc,$w,$h,$sa,$ea,$z,$fillcolor,$shadow=0.65) {
187
188 // Due to the way the 3D Pie algorithm works we are
189 // guaranteed that any slice we get into this method
190 // belongs to either the left or right side of the
191 // pie ellipse. Hence, no slice will cross 90 or 270
192 // point.
193 if( ($sa < 90 && $ea > 90) || ( ($sa > 90 && $sa < 270) && $ea > 270) ) {
194 JpGraphError::RaiseL(14003);//('Internal assertion failed. Pie3D::Pie3DSlice');
195 exit(1);
196 }
197
198 $p[] = array();
199
200 // Setup pre-calculated values
201 $rsa = $sa/180*M_PI; // to Rad
202 $rea = $ea/180*M_PI; // to Rad
203 $sinsa = sin($rsa);
204 $cossa = cos($rsa);
205 $sinea = sin($rea);
206 $cosea = cos($rea);
207
208 // p[] is the points for the overall slice and
209 // pt[] is the points for the top pie
210
211 // Angular step when approximating the arc with a polygon train.
212 $step = 0.05;
213
214 if( $sa >= 270 ) {
215 if( $ea > 360 || ($ea > 0 && $ea <= 90) ) {
216 if( $ea > 0 && $ea <= 90 ) {
217 // Adjust angle to simplify conditions in loops
218 $rea += 2*M_PI;
219 }
220
221 $p = array($xc,$yc,$xc,$yc+$z,
222 $xc+$w*$cossa,$z+$yc-$h*$sinsa);
223 $pt = array($xc,$yc,$xc+$w*$cossa,$yc-$h*$sinsa);
224
225 for( $a=$rsa; $a < 2*M_PI; $a += $step ) {
226 $tca = cos($a);
227 $tsa = sin($a);
228 $p[] = $xc+$w*$tca;
229 $p[] = $z+$yc-$h*$tsa;
230 $pt[] = $xc+$w*$tca;
231 $pt[] = $yc-$h*$tsa;
232 }
233
234 $pt[] = $xc+$w;
235 $pt[] = $yc;
236
237 $p[] = $xc+$w;
238 $p[] = $z+$yc;
239 $p[] = $xc+$w;
240 $p[] = $yc;
241 $p[] = $xc;
242 $p[] = $yc;
243
244 for( $a=2*M_PI+$step; $a < $rea; $a += $step ) {
245 $pt[] = $xc + $w*cos($a);
246 $pt[] = $yc - $h*sin($a);
247 }
248
249 $pt[] = $xc+$w*$cosea;
250 $pt[] = $yc-$h*$sinea;
251 $pt[] = $xc;
252 $pt[] = $yc;
253
254 }
255 else {
256 $p = array($xc,$yc,$xc,$yc+$z,
257 $xc+$w*$cossa,$z+$yc-$h*$sinsa);
258 $pt = array($xc,$yc,$xc+$w*$cossa,$yc-$h*$sinsa);
259
260 $rea = $rea == 0.0 ? 2*M_PI : $rea;
261 for( $a=$rsa; $a < $rea; $a += $step ) {
262 $tca = cos($a);
263 $tsa = sin($a);
264 $p[] = $xc+$w*$tca;
265 $p[] = $z+$yc-$h*$tsa;
266 $pt[] = $xc+$w*$tca;
267 $pt[] = $yc-$h*$tsa;
268 }
269
270 $pt[] = $xc+$w*$cosea;
271 $pt[] = $yc-$h*$sinea;
272 $pt[] = $xc;
273 $pt[] = $yc;
274
275 $p[] = $xc+$w*$cosea;
276 $p[] = $z+$yc-$h*$sinea;
277 $p[] = $xc+$w*$cosea;
278 $p[] = $yc-$h*$sinea;
279 $p[] = $xc;
280 $p[] = $yc;
281 }
282 }
283 elseif( $sa >= 180 ) {
284 $p = array($xc,$yc,$xc,$yc+$z,$xc+$w*$cosea,$z+$yc-$h*$sinea);
285 $pt = array($xc,$yc,$xc+$w*$cosea,$yc-$h*$sinea);
286
287 for( $a=$rea; $a>$rsa; $a -= $step ) {
288 $tca = cos($a);
289 $tsa = sin($a);
290 $p[] = $xc+$w*$tca;
291 $p[] = $z+$yc-$h*$tsa;
292 $pt[] = $xc+$w*$tca;
293 $pt[] = $yc-$h*$tsa;
294 }
295
296 $pt[] = $xc+$w*$cossa;
297 $pt[] = $yc-$h*$sinsa;
298 $pt[] = $xc;
299 $pt[] = $yc;
300
301 $p[] = $xc+$w*$cossa;
302 $p[] = $z+$yc-$h*$sinsa;
303 $p[] = $xc+$w*$cossa;
304 $p[] = $yc-$h*$sinsa;
305 $p[] = $xc;
306 $p[] = $yc;
307
308 }
309 elseif( $sa >= 90 ) {
310 if( $ea > 180 ) {
311 $p = array($xc,$yc,$xc,$yc+$z,$xc+$w*$cosea,$z+$yc-$h*$sinea);
312 $pt = array($xc,$yc,$xc+$w*$cosea,$yc-$h*$sinea);
313
314 for( $a=$rea; $a > M_PI; $a -= $step ) {
315 $tca = cos($a);
316 $tsa = sin($a);
317 $p[] = $xc+$w*$tca;
318 $p[] = $z + $yc - $h*$tsa;
319 $pt[] = $xc+$w*$tca;
320 $pt[] = $yc-$h*$tsa;
321 }
322
323 $p[] = $xc-$w;
324 $p[] = $z+$yc;
325 $p[] = $xc-$w;
326 $p[] = $yc;
327 $p[] = $xc;
328 $p[] = $yc;
329
330 $pt[] = $xc-$w;
331 $pt[] = $z+$yc;
332 $pt[] = $xc-$w;
333 $pt[] = $yc;
334
335 for( $a=M_PI-$step; $a > $rsa; $a -= $step ) {
336 $pt[] = $xc + $w*cos($a);
337 $pt[] = $yc - $h*sin($a);
338 }
339
340 $pt[] = $xc+$w*$cossa;
341 $pt[] = $yc-$h*$sinsa;
342 $pt[] = $xc;
343 $pt[] = $yc;
344
345 }
346 else { // $sa >= 90 && $ea <= 180
347 $p = array($xc,$yc,$xc,$yc+$z,
348 $xc+$w*$cosea,$z+$yc-$h*$sinea,
349 $xc+$w*$cosea,$yc-$h*$sinea,
350 $xc,$yc);
351
352 $pt = array($xc,$yc,$xc+$w*$cosea,$yc-$h*$sinea);
353
354 for( $a=$rea; $a>$rsa; $a -= $step ) {
355 $pt[] = $xc + $w*cos($a);
356 $pt[] = $yc - $h*sin($a);
357 }
358
359 $pt[] = $xc+$w*$cossa;
360 $pt[] = $yc-$h*$sinsa;
361 $pt[] = $xc;
362 $pt[] = $yc;
363
364 }
365 }
366 else { // sa > 0 && ea < 90
367
368 $p = array($xc,$yc,$xc,$yc+$z,
369 $xc+$w*$cossa,$z+$yc-$h*$sinsa,
370 $xc+$w*$cossa,$yc-$h*$sinsa,
371 $xc,$yc);
372
373 $pt = array($xc,$yc,$xc+$w*$cossa,$yc-$h*$sinsa);
374
375 for( $a=$rsa; $a < $rea; $a += $step ) {
376 $pt[] = $xc + $w*cos($a);
377 $pt[] = $yc - $h*sin($a);
378 }
379
380 $pt[] = $xc+$w*$cosea;
381 $pt[] = $yc-$h*$sinea;
382 $pt[] = $xc;
383 $pt[] = $yc;
384 }
385
386 $img->PushColor($fillcolor.":".$shadow);
387 $img->FilledPolygon($p);
388 $img->PopColor();
389
390 $img->PushColor($fillcolor);
391 $img->FilledPolygon($pt);
392 $img->PopColor();
393 }
394
395 function SetStartAngle($aStart) {
396 if( $aStart < 0 || $aStart > 360 ) {
397 JpGraphError::RaiseL(14004);//('Slice start angle must be between 0 and 360 degrees.');
398 }
399 $this->startangle = $aStart;
400 }
401
402// Draw a 3D Pie
403 function Pie3D($aaoption,$img,$data,$colors,$xc,$yc,$d,$angle,$z,
404 $shadow=0.65,$startangle=0,$edgecolor="",$edgeweight=1) {
405
406 //---------------------------------------------------------------------------
407 // As usual the algorithm get more complicated than I originally
408 // envisioned. I believe that this is as simple as it is possible
409 // to do it with the features I want. It's a good exercise to start
410 // thinking on how to do this to convince your self that all this
411 // is really needed for the general case.
412 //
413 // The algorithm two draw 3D pies without "real 3D" is done in
414 // two steps.
415 // First imagine the pie cut in half through a thought line between
416 // 12'a clock and 6'a clock. It now easy to imagine that we can plot
417 // the individual slices for each half by starting with the topmost
418 // pie slice and continue down to 6'a clock.
419 //
420 // In the algortithm this is done in three principal steps
421 // Step 1. Do the knife cut to ensure by splitting slices that extends
422 // over the cut line. This is done by splitting the original slices into
423 // upto 3 subslices.
424 // Step 2. Find the top slice for each half
425 // Step 3. Draw the slices from top to bottom
426 //
427 // The thing that slightly complicates this scheme with all the
428 // angle comparisons below is that we can have an arbitrary start
429 // angle so we must take into account the different equivalence classes.
430 // For the same reason we must walk through the angle array in a
431 // modulo fashion.
432 //
433 // Limitations of algorithm:
434 // * A small exploded slice which crosses the 270 degree point
435 // will get slightly nagged close to the center due to the fact that
436 // we print the slices in Z-order and that the slice left part
437 // get printed first and might get slightly nagged by a larger
438 // slice on the right side just before the right part of the small
439 // slice. Not a major problem though.
440 //---------------------------------------------------------------------------
441
442
443 // Determine the height of the ellippse which gives an
444 // indication of the inclination angle
445 $h = ($angle/90.0)*$d;
446 $sum = 0;
447 for($i=0; $i<count($data); ++$i ) {
448 $sum += $data[$i];
449 }
450
451 // Special optimization
452 if( $sum==0 ) return;
453
454 if( $this->labeltype == 2 ) {
455 $this->adjusted_data = $this->AdjPercentage($data);
456 }
457
458 // Setup the start
459 $accsum = 0;
460 $a = $startangle;
461 $a = $this->NormAngle($a);
462
463 //
464 // Step 1 . Split all slices that crosses 90 or 270
465 //
466 $idx=0;
467 $adjexplode=array();
468 $numcolors = count($colors);
469 for($i=0; $i<count($data); ++$i, ++$idx ) {
470 $da = $data[$i]/$sum * 360;
471
472 if( empty($this->explode_radius[$i]) )
473 $this->explode_radius[$i]=0;
474
475 $expscale=1;
476 if( $aaoption == 1 )
477 $expscale=2;
478
479 $la = $a + $da/2;
480 $explode = array( $xc + $this->explode_radius[$i]*cos($la*M_PI/180)*$expscale,
481 $yc - $this->explode_radius[$i]*sin($la*M_PI/180) * ($h/$d) *$expscale );
482 $adjexplode[$idx] = $explode;
483 $labeldata[$i] = array($la,$explode[0],$explode[1]);
484 $originalangles[$i] = array($a,$a+$da);
485
486 $ne = $this->NormAngle($a+$da);
487 if( $da <= 180 ) {
488 // If the slice size is <= 90 it can at maximum cut across
489 // one boundary (either 90 or 270) where it needs to be split
490 $split=-1; // no split
491 if( ($da<=90 && ($a <= 90 && $ne > 90)) ||
492 (($da <= 180 && $da >90) && (($a < 90 || $a >= 270) && $ne > 90)) ) {
493 $split = 90;
494 }
495 elseif( ($da<=90 && ($a <= 270 && $ne > 270)) ||
496 (($da<=180 && $da>90) && ($a >= 90 && $a < 270 && ($a+$da) > 270 )) ) {
497 $split = 270;
498 }
499 if( $split > 0 ) { // split in two
500 $angles[$idx] = array($a,$split);
501 $adjcolors[$idx] = $colors[$i % $numcolors];
502 $adjexplode[$idx] = $explode;
503 $angles[++$idx] = array($split,$ne);
504 $adjcolors[$idx] = $colors[$i % $numcolors];
505 $adjexplode[$idx] = $explode;
506 }
507 else { // no split
508 $angles[$idx] = array($a,$ne);
509 $adjcolors[$idx] = $colors[$i % $numcolors];
510 $adjexplode[$idx] = $explode;
511 }
512 }
513 else {
514 // da>180
515 // Slice may, depending on position, cross one or two
516 // bonudaries
517
518 if( $a < 90 )
519 $split = 90;
520 elseif( $a <= 270 )
521 $split = 270;
522 else
523 $split = 90;
524
525 $angles[$idx] = array($a,$split);
526 $adjcolors[$idx] = $colors[$i % $numcolors];
527 $adjexplode[$idx] = $explode;
528 //if( $a+$da > 360-$split ) {
529 // For slices larger than 270 degrees we might cross
530 // another boundary as well. This means that we must
531 // split the slice further. The comparison gets a little
532 // bit complicated since we must take into accound that
533 // a pie might have a startangle >0 and hence a slice might
534 // wrap around the 0 angle.
535 // Three cases:
536 // a) Slice starts before 90 and hence gets a split=90, but
537 // we must also check if we need to split at 270
538 // b) Slice starts after 90 but before 270 and slices
539 // crosses 90 (after a wrap around of 0)
540 // c) If start is > 270 (hence the firstr split is at 90)
541 // and the slice is so large that it goes all the way
542 // around 270.
543 if( ($a < 90 && ($a+$da > 270)) ||
544 ($a > 90 && $a<=270 && ($a+$da>360+90) ) ||
545 ($a > 270 && $this->NormAngle($a+$da)>270) ) {
546 $angles[++$idx] = array($split,360-$split);
547 $adjcolors[$idx] = $colors[$i % $numcolors];
548 $adjexplode[$idx] = $explode;
549 $angles[++$idx] = array(360-$split,$ne);
550 $adjcolors[$idx] = $colors[$i % $numcolors];
551 $adjexplode[$idx] = $explode;
552 }
553 else {
554 // Just a simple split to the previous decided
555 // angle.
556 $angles[++$idx] = array($split,$ne);
557 $adjcolors[$idx] = $colors[$i % $numcolors];
558 $adjexplode[$idx] = $explode;
559 }
560 }
561 $a += $da;
562 $a = $this->NormAngle($a);
563 }
564
565 // Total number of slices
566 $n = count($angles);
567
568 for($i=0; $i<$n; ++$i) {
569 list($dbgs,$dbge) = $angles[$i];
570 }
571
572 //
573 // Step 2. Find start index (first pie that starts in upper left quadrant)
574 //
575 $minval = $angles[0][0];
576 $min = 0;
577 for( $i=0; $i<$n; ++$i ) {
578 if( $angles[$i][0] < $minval ) {
579 $minval = $angles[$i][0];
580 $min = $i;
581 }
582 }
583 $j = $min;
584 $cnt = 0;
585 while( $angles[$j][1] <= 90 ) {
586 $j++;
587 if( $j>=$n) {
588 $j=0;
589 }
590 if( $cnt > $n ) {
591 JpGraphError::RaiseL(14005);
592//("Pie3D Internal error (#1). Trying to wrap twice when looking for start index");
593 }
594 ++$cnt;
595 }
596 $start = $j;
597
598 //
599 // Step 3. Print slices in z-order
600 //
601 $cnt = 0;
602
603 // First stroke all the slices between 90 and 270 (left half circle)
604 // counterclockwise
605
606 while( $angles[$j][0] < 270 && $aaoption !== 2 ) {
607
608 list($x,$y) = $adjexplode[$j];
609
610 $this->Pie3DSlice($img,$x,$y,$d,$h,$angles[$j][0],$angles[$j][1],
611 $z,$adjcolors[$j],$shadow);
612
613 $last = array($x,$y,$j);
614
615 $j++;
616 if( $j >= $n ) $j=0;
617 if( $cnt > $n ) {
618 JpGraphError::RaiseL(14006);
619//("Pie3D Internal Error: Z-Sorting algorithm for 3D Pies is not working properly (2). Trying to wrap twice while stroking.");
620 }
621 ++$cnt;
622 }
623
624 $slice_left = $n-$cnt;
625 $j=$start-1;
626 if($j<0) $j=$n-1;
627 $cnt = 0;
628
629 // The stroke all slices from 90 to -90 (right half circle)
630 // clockwise
631 while( $cnt < $slice_left && $aaoption !== 2 ) {
632
633 list($x,$y) = $adjexplode[$j];
634
635 $this->Pie3DSlice($img,$x,$y,$d,$h,$angles[$j][0],$angles[$j][1],
636 $z,$adjcolors[$j],$shadow);
637 $j--;
638 if( $cnt > $n ) {
639 JpGraphError::RaiseL(14006);
640//("Pie3D Internal Error: Z-Sorting algorithm for 3D Pies is not working properly (2). Trying to wrap twice while stroking.");
641 }
642 if($j<0) $j=$n-1;
643 $cnt++;
644 }
645
646 // Now do a special thing. Stroke the last slice on the left
647 // halfcircle one more time. This is needed in the case where
648 // the slice close to 270 have been exploded. In that case the
649 // part of the slice close to the center of the pie might be
650 // slightly nagged.
651 if( $aaoption !== 2 )
652 $this->Pie3DSlice($img,$last[0],$last[1],$d,$h,$angles[$last[2]][0],
653 $angles[$last[2]][1],$z,$adjcolors[$last[2]],$shadow);
654
655
656 if( $aaoption !== 1 ) {
657 // Now print possible labels and add csim
658 $this->value->ApplyFont($img);
659 $margin = $img->GetFontHeight()/2 + $this->value->margin ;
660 for($i=0; $i < count($data); ++$i ) {
661 $la = $labeldata[$i][0];
662 $x = $labeldata[$i][1] + cos($la*M_PI/180)*($d+$margin)*$this->ilabelposadj;
663 $y = $labeldata[$i][2] - sin($la*M_PI/180)*($h+$margin)*$this->ilabelposadj;
664 if( $this->ilabelposadj >= 1.0 ) {
665 if( $la > 180 && $la < 360 ) $y += $z;
666 }
667 if( $this->labeltype == 0 ) {
668 if( $sum > 0 )
669 $l = 100*$data[$i]/$sum;
670 else
671 $l = 0;
672 }
673 elseif( $this->labeltype == 1 ) {
674 $l = $data[$i];
675 }
676 else {
677 $l = $this->adjusted_data[$i];
678 }
679 if( isset($this->labels[$i]) && is_string($this->labels[$i]) )
680 $l=sprintf($this->labels[$i],$l);
681
682 $this->StrokeLabels($l,$img,$labeldata[$i][0]*M_PI/180,$x,$y,$z);
683
684 $this->Add3DSliceToCSIM($i,$labeldata[$i][1],$labeldata[$i][2],$h*2,$d*2,$z,
685 $originalangles[$i][0],$originalangles[$i][1]);
686 }
687 }
688
689 //
690 // Finally add potential lines in pie
691 //
692
693 if( $edgecolor=="" || $aaoption !== 0 ) return;
694
695 $accsum = 0;
696 $a = $startangle;
697 $a = $this->NormAngle($a);
698
699 $a *= M_PI/180.0;
700
701 $idx=0;
702 $img->PushColor($edgecolor);
703 $img->SetLineWeight($edgeweight);
704
705 $fulledge = true;
706 for($i=0; $i < count($data) && $fulledge; ++$i ) {
707 if( empty($this->explode_radius[$i]) )
708 $this->explode_radius[$i]=0;
709 if( $this->explode_radius[$i] > 0 ) {
710 $fulledge = false;
711 }
712 }
713
714
715 for($i=0; $i < count($data); ++$i, ++$idx ) {
716
717 $da = $data[$i]/$sum * 2*M_PI;
718 $this->StrokeFullSliceFrame($img,$xc,$yc,$a,$a+$da,$d,$h,$z,$edgecolor,
719 $this->explode_radius[$i],$fulledge);
720 $a += $da;
721 }
722 $img->PopColor();
723 }
724
725 function StrokeFullSliceFrame($img,$xc,$yc,$sa,$ea,$w,$h,$z,$edgecolor,$exploderadius,$fulledge) {
726 $step = 0.02;
727
728 if( $exploderadius > 0 ) {
729 $la = ($sa+$ea)/2;
730 $xc += $exploderadius*cos($la);
731 $yc -= $exploderadius*sin($la) * ($h/$w) ;
732
733 }
734
735 $p = array($xc,$yc,$xc+$w*cos($sa),$yc-$h*sin($sa));
736
737 for($a=$sa; $a < $ea; $a += $step ) {
738 $p[] = $xc + $w*cos($a);
739 $p[] = $yc - $h*sin($a);
740 }
741
742 $p[] = $xc+$w*cos($ea);
743 $p[] = $yc-$h*sin($ea);
744 $p[] = $xc;
745 $p[] = $yc;
746
747 $img->SetColor($edgecolor);
748 $img->Polygon($p);
749
750 // Unfortunately we can't really draw the full edge around the whole of
751 // of the slice if any of the slices are exploded. The reason is that
752 // this algorithm is to simply. There are cases where the edges will
753 // "overwrite" other slices when they have been exploded.
754 // Doing the full, proper 3D hidden lines stiff is actually quite
755 // tricky. So for exploded pies we only draw the top edge. Not perfect
756 // but the "real" solution is much more complicated.
757 if( $fulledge && !( $sa > 0 && $sa < M_PI && $ea < M_PI) ) {
758
759 if($sa < M_PI && $ea > M_PI)
760 $sa = M_PI;
761
762 if($sa < 2*M_PI && (($ea >= 2*M_PI) || ($ea > 0 && $ea < $sa ) ) )
763 $ea = 2*M_PI;
764
765 if( $sa >= M_PI && $ea <= 2*M_PI ) {
766 $p = array($xc + $w*cos($sa),$yc - $h*sin($sa),
767 $xc + $w*cos($sa),$z + $yc - $h*sin($sa));
768
769 for($a=$sa+$step; $a < $ea; $a += $step ) {
770 $p[] = $xc + $w*cos($a);
771 $p[] = $z + $yc - $h*sin($a);
772 }
773 $p[] = $xc + $w*cos($ea);
774 $p[] = $z + $yc - $h*sin($ea);
775 $p[] = $xc + $w*cos($ea);
776 $p[] = $yc - $h*sin($ea);
777 $img->SetColor($edgecolor);
778 $img->Polygon($p);
779 }
780 }
781 }
782
783 function Stroke($img,$aaoption=0) {
784 $n = count($this->data);
785
786 // If user hasn't set the colors use the theme array
787 if( $this->setslicecolors==null ) {
788 $colors = array_keys($img->rgb->rgb_table);
789 sort($colors);
790 $idx_a=$this->themearr[$this->theme];
791 $ca = array();
792 $m = count($idx_a);
793 for($i=0; $i < $m; ++$i)
794 $ca[$i] = $colors[$idx_a[$i]];
795 $ca = array_reverse(array_slice($ca,0,$n));
796 }
797 else {
798 $ca = $this->setslicecolors;
799 }
800
801
802 if( $this->posx <= 1 && $this->posx > 0 )
803 $xc = round($this->posx*$img->width);
804 else
805 $xc = $this->posx ;
806
807 if( $this->posy <= 1 && $this->posy > 0 )
808 $yc = round($this->posy*$img->height);
809 else
810 $yc = $this->posy ;
811
812 if( $this->radius <= 1 ) {
813 $width = floor($this->radius*min($img->width,$img->height));
814 // Make sure that the pie doesn't overflow the image border
815 // The 0.9 factor is simply an extra margin to leave some space
816 // between the pie an the border of the image.
817 $width = min($width,min($xc*0.9,($yc*90/$this->angle-$width/4)*0.9));
818 }
819 else {
820 $width = $this->radius * ($aaoption === 1 ? 2 : 1 ) ;
821 }
822
823 // Add a sanity check for width
824 if( $width < 1 ) {
825 JpGraphError::RaiseL(14007);//("Width for 3D Pie is 0. Specify a size > 0");
826 }
827
828 // Establish a thickness. By default the thickness is a fifth of the
829 // pie slice width (=pie radius) but since the perspective depends
830 // on the inclination angle we use some heuristics to make the edge
831 // slightly thicker the less the angle.
832
833 // Has user specified an absolute thickness? In that case use
834 // that instead
835
836 if( $this->iThickness ) {
837 $thick = $this->iThickness;
838 $thick *= ($aaoption === 1 ? 2 : 1 );
839 }
840 else
841 $thick = $width/12;
842 $a = $this->angle;
843 if( $a <= 30 ) $thick *= 1.6;
844 elseif( $a <= 40 ) $thick *= 1.4;
845 elseif( $a <= 50 ) $thick *= 1.2;
846 elseif( $a <= 60 ) $thick *= 1.0;
847 elseif( $a <= 70 ) $thick *= 0.8;
848 elseif( $a <= 80 ) $thick *= 0.7;
849 else $thick *= 0.6;
850
851 $thick = floor($thick);
852
853 if( $this->explode_all )
854 for($i=0; $i < $n; ++$i)
855 $this->explode_radius[$i]=$this->explode_r;
856
857 $this->Pie3D($aaoption,$img,$this->data, $ca, $xc, $yc, $width, $this->angle,
858 $thick, 0.65, $this->startangle, $this->edgecolor, $this->edgeweight);
859
860 // Adjust title position
861 if( $aaoption != 1 ) {
862 $this->title->SetPos($xc,$yc-$this->title->GetFontHeight($img)-$width/2-$this->title->margin, "center","bottom");
863 $this->title->Stroke($img);
864 }
865 }
866
867//---------------
868// PRIVATE METHODS
869
870 // Position the labels of each slice
871 function StrokeLabels($label,$img,$a,$xp,$yp,$z) {
872 $this->value->halign="left";
873 $this->value->valign="top";
874
875 // Position the axis title.
876 // dx, dy is the offset from the top left corner of the bounding box that sorrounds the text
877 // that intersects with the extension of the corresponding axis. The code looks a little
878 // bit messy but this is really the only way of having a reasonable position of the
879 // axis titles.
880 $this->value->ApplyFont($img);
881 $h=$img->GetTextHeight($label);
882 // For numeric values the format of the display value
883 // must be taken into account
884 if( is_numeric($label) ) {
885 if( $label >= 0 )
886 $w=$img->GetTextWidth(sprintf($this->value->format,$label));
887 else
888 $w=$img->GetTextWidth(sprintf($this->value->negformat,$label));
889 }
890 else
891 $w=$img->GetTextWidth($label);
892 while( $a > 2*M_PI ) $a -= 2*M_PI;
893 if( $a>=7*M_PI/4 || $a <= M_PI/4 ) $dx=0;
894 if( $a>=M_PI/4 && $a <= 3*M_PI/4 ) $dx=($a-M_PI/4)*2/M_PI;
895 if( $a>=3*M_PI/4 && $a <= 5*M_PI/4 ) $dx=1;
896 if( $a>=5*M_PI/4 && $a <= 7*M_PI/4 ) $dx=(1-($a-M_PI*5/4)*2/M_PI);
897
898 if( $a>=7*M_PI/4 ) $dy=(($a-M_PI)-3*M_PI/4)*2/M_PI;
899 if( $a<=M_PI/4 ) $dy=(1-$a*2/M_PI);
900 if( $a>=M_PI/4 && $a <= 3*M_PI/4 ) $dy=1;
901 if( $a>=3*M_PI/4 && $a <= 5*M_PI/4 ) $dy=(1-($a-3*M_PI/4)*2/M_PI);
902 if( $a>=5*M_PI/4 && $a <= 7*M_PI/4 ) $dy=0;
903
904 $x = round($xp-$dx*$w);
905 $y = round($yp-$dy*$h);
906
907
908 // Mark anchor point for debugging
909 /*
910 $img->SetColor('red');
911 $img->Line($xp-10,$yp,$xp+10,$yp);
912 $img->Line($xp,$yp-10,$xp,$yp+10);
913 */
914 $oldmargin = $this->value->margin;
915 $this->value->margin=0;
916 $this->value->Stroke($img,$label,$x,$y);
917 $this->value->margin=$oldmargin;
918
919 }
920} // Class
921
922/* EOF */
923?>
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