1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
|
<!doctype html public "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>openvrml::bounding_volume class Reference</title>
<meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1">
<link rel="icon" href="../vrml-16">
<link rel="start" href="http://openvrml.org/index" title="OpenVRML Home">
<link rel="prev" href="http://openvrml.org/discussion" title="Discussion">
<link rel="contents" href="index" title="Documentation Main Page">
<link rel="index" href="functions" title="OpenVRML Compound Members">
<link rel="appendix" href="conformance" title="Conformance Test Results">
<style type="text/css">
@import url("doxygen.css");
@import url("http://openvrml.org/openvrml.css");
.body td {
background-color: transparent;
}
div.qindex {
background-color: transparent;
border: none;
}
a.qindex {
text-decoration: inherit;
color: inherit
}
a.qindex:visited {
text-decoration: inherit;
font-weight: inherit;
color: inherit
}
a.qindex:hover {
text-decoration: inherit;
background-color: transparent;
}
a.qindexHL {
text-decoration: inherit;
font-weight: inherit;
background-color: transparent;
color: inherit;
}
a.qindexHL:hover {
text-decoration: inherit;
background-color: transparent;
color: inherit;
}
a.qindexHL:visited {
text-decoration: inherit;
background-color: transparent;
color: inherit;
}
a.el {
text-decoration: inherit;
font-weight: inherit
}
a.elRef {
font-weight: inherit
}
a.code {
text-decoration: inherit;
font-weight: inherit;
color: inherit;
}
a.codeRef {
font-weight: normal;
color: inherit;
}
a:hover {
text-decoration: inherit;
background-color: inherit;
}
h1 {
line-height: 1.2em;
}
div.qindex {
font-size: smaller;
}
div.qindex .qindex:link, div.qindex .qindex:visited {
font-weight: inherit;
}
div.qindex .qindexHL:link, div.qindex .qindexHL:visited {
font-weight: bold;
}
td.memItemLeft, td.memItemRight, .mdRow td {
font-family: "Bitstream Vera Sans Mono",
"LucidaTypewriter",
"Lucida Console",
monospace;
}
td.memItemLeft, td.memItemRight, td.mdescLeft, td.mdescRight {
background-color: rgb(95%, 95%, 95%);
}
.mdRow {
background-color: rgb(95%, 95%, 95%);
}
.mdTable {
background-color: rgb(95%, 95%, 95%);
}
.mdRow td {
background-color: rgb(95%, 95%, 95%);
}
.mdRow td code {
font-family: sans-serif;
font-style: italic;
}
</style>
</head>
<body>
<table class="sitenav">
<tr>
<th><a href="http://openvrml.org/index" title="Home">Home</a></th>
<th><a href="http://openvrml.org/download" title="Download">Download</a></th>
<th><a href="http://openvrml.org/screenshots/index" title="Screen shots">Screen shots</a></th>
<th><a href="http://openvrml.org/discussion" title="Mailing lists and IRC">Discussion</a></th>
<th>Documentation</th>
</tr>
</table>
<div class="body">
<!-- Generated by Doxygen 1.3.4-20031112 -->
<div class="qindex"><a class="qindex" href="index.html">Main Page</a> | <a class="qindex" href="modules.html">Modules</a> | <a class="qindex" href="namespaces.html">Namespace List</a> | <a class="qindex" href="hierarchy.html">Class Hierarchy</a> | <a class="qindex" href="annotated.html">Class List</a> | <a class="qindex" href="namespacemembers.html">Namespace Members</a> | <a class="qindex" href="functions.html">Class Members</a> | <a class="qindex" href="pages.html">Related Pages</a></div>
<h1>openvrml::bounding_volume Class Reference</h1>A bounding volume.
<a href="#_details">More...</a>
<p>
Inheritance diagram for openvrml::bounding_volume:<p><center><img src="classopenvrml_1_1bounding__volume__inherit__graph.png" border="0" usemap="#openvrml_1_1bounding__volume__inherit__map" alt="Inheritance graph"></center>
<map name="openvrml_1_1bounding__volume__inherit__map">
<area href="classopenvrml_1_1axis__aligned__bounding__box.html" shape="rect" coords="7,87,244,105" alt="">
<area href="classopenvrml_1_1bounding__sphere.html" shape="rect" coords="268,87,444,105" alt="">
</map>
<center><font size="2">[<a href="graph_legend.html">legend</a>]</font></center><a href="classopenvrml_1_1bounding__volume-members.html">List of all members.</a><table border=0 cellpadding=0 cellspacing=0>
<tr><td></td></tr>
<tr><td colspan=2><br><h2>Public Types</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>enum </td><td class="memItemRight" valign=bottom><a class="el" href="classopenvrml_1_1bounding__volume.html#w3">intersection</a> { <br>
<a class="el" href="classopenvrml_1_1bounding__volume.html#w3w0">inside</a> = 1,
<br>
<a class="el" href="classopenvrml_1_1bounding__volume.html#w3w1">outside</a> = -1,
<br>
<a class="el" href="classopenvrml_1_1bounding__volume.html#w3w2">partial</a> = 0
<br>
}</td></tr>
<tr><td colspan=2><br><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a class="anchor" name="a0" doxytag="openvrml::bounding_volume::~bounding_volume" ></a>
virtual </td><td class="memItemRight" valign=bottom><a class="el" href="classopenvrml_1_1bounding__volume.html#a0">~bounding_volume</a> ()=0</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Destructor. <br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual void </td><td class="memItemRight" valign=bottom><a class="el" href="classopenvrml_1_1bounding__volume.html#a1">maximize</a> ()=0</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Maximize the bounding volume. <a href="#a1"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual bool </td><td class="memItemRight" valign=bottom><a class="el" href="classopenvrml_1_1bounding__volume.html#a2">maximized</a> () const=0</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Indicates whether the bounding volume is maximized. <a href="#a2"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual <a class="el" href="classopenvrml_1_1bounding__volume.html#w3">intersection</a> </td><td class="memItemRight" valign=bottom><a class="el" href="classopenvrml_1_1bounding__volume.html#a3">intersect_frustum</a> (const <a class="el" href="classopenvrml_1_1frustum.html">openvrml::frustum</a> &<a class="el" href="classopenvrml_1_1frustum.html">frustum</a>) const=0</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Intersect this bvolume with a frustum. <a href="#a3"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual void </td><td class="memItemRight" valign=bottom><a class="el" href="classopenvrml_1_1bounding__volume.html#a4">extend</a> (const <a class="el" href="classopenvrml_1_1bounding__volume.html">bounding_volume</a> &bv)=0</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Extend the <a class="el" href="classopenvrml_1_1bounding__volume.html">bounding_volume</a> to enclose <code>bv</code>. <a href="#a4"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual void </td><td class="memItemRight" valign=bottom><a class="el" href="classopenvrml_1_1bounding__volume.html#a5">extend</a> (const <a class="el" href="classopenvrml_1_1vec3f.html">vec3f</a> &p)=0</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Extend the bounding volume to enclose <code>p</code>. <a href="#a5"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual void </td><td class="memItemRight" valign=bottom><a class="el" href="classopenvrml_1_1bounding__volume.html#a6">extend</a> (const <a class="el" href="classopenvrml_1_1axis__aligned__bounding__box.html">axis_aligned_bounding_box</a> &bbox)=0</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Extend the bounding volume to enclose <code>bbox</code>. <a href="#a6"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual void </td><td class="memItemRight" valign=bottom><a class="el" href="classopenvrml_1_1bounding__volume.html#a7">extend</a> (const <a class="el" href="classopenvrml_1_1bounding__sphere.html">bounding_sphere</a> &bs)=0</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Extend this bvolume to enclose the given sphere. <a href="#a7"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual void </td><td class="memItemRight" valign=bottom><a class="el" href="classopenvrml_1_1bounding__volume.html#a8">enclose</a> (const std::vector< <a class="el" href="classopenvrml_1_1vec3f.html">vec3f</a> > &points)=0</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Enclose the given set of points. <a href="#a8"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual void </td><td class="memItemRight" valign=bottom><a class="el" href="classopenvrml_1_1bounding__volume.html#a9">ortho_transform</a> (const <a class="el" href="classopenvrml_1_1mat4f.html">mat4f</a> &M)=0</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Transform this bounding volume using an orthogonal transfom. <a href="#a9"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual void </td><td class="memItemRight" valign=bottom><a class="el" href="classopenvrml_1_1bounding__volume.html#a10">transform</a> (const <a class="el" href="classopenvrml_1_1mat4f.html">mat4f</a> &M)=0</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Transform this bounding volume using an affine transfom. <a href="#a10"></a><br><br></td></tr>
</table>
<hr><a name="_details"></a><h2>Detailed Description</h2>
A bounding volume.
<p>
All the geometry in a scene maintains a bounding volume to help speed up rendering and picking. Although currently we're just using spheres, the plan is to eventually use tighter bounds like axis aligned boxes around nodes that are expected to be static. That probably means boxes for geometry and spheres for grouping nodes.<p>
<dl compact><dt><b>See also:</b></dt><dd><a class="el" href="classopenvrml_1_1node.html#a67">node::render</a> <p>
<a class="el" href="classopenvrml_1_1bounding__sphere.html">bounding_sphere</a> <p>
<a class="el" href="classopenvrml_1_1axis__aligned__bounding__box.html">axis_aligned_bounding_box</a> </dd></dl>
<p>
<hr><h2>Member Enumeration Documentation</h2>
<a class="anchor" name="w3" doxytag="openvrml::bounding_volume::intersection" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> enum <a class="el" href="classopenvrml_1_1bounding__volume.html#w3">openvrml::bounding_volume::intersection</a>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
<dl compact><dt><b>Enumeration values: </b></dt><dd>
<table border=0 cellspacing=2 cellpadding=0>
<tr><td valign=top><em><a class="anchor" name="w3w0" doxytag="inside" ></a>inside</em> </td><td>
Results of an intersection; indicates that the tested volume is entirely inside the target volume. </td></tr>
<tr><td valign=top><em><a class="anchor" name="w3w1" doxytag="outside" ></a>outside</em> </td><td>
Results of an intersection; indicates that the tested volume is entirely outside the target volume. </td></tr>
<tr><td valign=top><em><a class="anchor" name="w3w2" doxytag="partial" ></a>partial</em> </td><td>
Results of an intersection; indicates that the tested volume intersects with the target volume. </td></tr>
</table>
</dl>
</td>
</tr>
</table>
<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="a8" doxytag="openvrml::bounding_volume::enclose" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> void openvrml::bounding_volume::enclose </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">const std::vector< <a class="el" href="classopenvrml_1_1vec3f.html">vec3f</a> > & </td>
<td class="mdname1" valign="top" nowrap> <em>points</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [pure virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Enclose the given set of points.
<p>
This resets the volume from any previous values.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign=top><em>points</em> </td><td>points. </td></tr>
</table>
</dl>
<p>
Implemented in <a class="el" href="classopenvrml_1_1bounding__sphere.html#a7">openvrml::bounding_sphere</a>, and <a class="el" href="classopenvrml_1_1axis__aligned__bounding__box.html#a6">openvrml::axis_aligned_bounding_box</a>. </td>
</tr>
</table>
<a class="anchor" name="a7" doxytag="openvrml::bounding_volume::extend" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> void openvrml::bounding_volume::extend </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">const <a class="el" href="classopenvrml_1_1bounding__sphere.html">bounding_sphere</a> & </td>
<td class="mdname1" valign="top" nowrap> <em>b</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [pure virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Extend this bvolume to enclose the given sphere.
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign=top><em>b</em> </td><td>a bounding sphere </td></tr>
</table>
</dl>
<p>
Implemented in <a class="el" href="classopenvrml_1_1bounding__sphere.html#a6">openvrml::bounding_sphere</a>, and <a class="el" href="classopenvrml_1_1axis__aligned__bounding__box.html#a5">openvrml::axis_aligned_bounding_box</a>. </td>
</tr>
</table>
<a class="anchor" name="a6" doxytag="openvrml::bounding_volume::extend" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> void openvrml::bounding_volume::extend </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">const <a class="el" href="classopenvrml_1_1axis__aligned__bounding__box.html">axis_aligned_bounding_box</a> & </td>
<td class="mdname1" valign="top" nowrap> <em>bbox</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [pure virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Extend the bounding volume to enclose <code>bbox</code>.
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign=top><em>bbox</em> </td><td>an axis-aligned bounding box. </td></tr>
</table>
</dl>
<p>
Implemented in <a class="el" href="classopenvrml_1_1bounding__sphere.html#a5">openvrml::bounding_sphere</a>, and <a class="el" href="classopenvrml_1_1axis__aligned__bounding__box.html#a4">openvrml::axis_aligned_bounding_box</a>. </td>
</tr>
</table>
<a class="anchor" name="a5" doxytag="openvrml::bounding_volume::extend" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> void openvrml::bounding_volume::extend </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">const <a class="el" href="classopenvrml_1_1vec3f.html">vec3f</a> & </td>
<td class="mdname1" valign="top" nowrap> <em>p</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [pure virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Extend the bounding volume to enclose <code>p</code>.
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign=top><em>p</em> </td><td>a point </td></tr>
</table>
</dl>
<p>
Implemented in <a class="el" href="classopenvrml_1_1bounding__sphere.html#a4">openvrml::bounding_sphere</a>, and <a class="el" href="classopenvrml_1_1axis__aligned__bounding__box.html#a3">openvrml::axis_aligned_bounding_box</a>. </td>
</tr>
</table>
<a class="anchor" name="a4" doxytag="openvrml::bounding_volume::extend" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> void openvrml::bounding_volume::extend </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">const <a class="el" href="classopenvrml_1_1bounding__volume.html">bounding_volume</a> & </td>
<td class="mdname1" valign="top" nowrap> <em>bv</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [pure virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Extend the <a class="el" href="classopenvrml_1_1bounding__volume.html">bounding_volume</a> to enclose <code>bv</code>.
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign=top><em>bv</em> </td><td>a bounding volume. </td></tr>
</table>
</dl>
<p>
Implemented in <a class="el" href="classopenvrml_1_1bounding__sphere.html#a3">openvrml::bounding_sphere</a>, and <a class="el" href="classopenvrml_1_1axis__aligned__bounding__box.html#a2">openvrml::axis_aligned_bounding_box</a>. </td>
</tr>
</table>
<a class="anchor" name="a3" doxytag="openvrml::bounding_volume::intersect_frustum" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> <a class="el" href="classopenvrml_1_1bounding__volume.html#w3">bounding_volume::intersection</a> openvrml::bounding_volume::intersect_frustum </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">const <a class="el" href="classopenvrml_1_1frustum.html">openvrml::frustum</a> & </td>
<td class="mdname1" valign="top" nowrap> <em>frustum</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap> const<code> [pure virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Intersect this bvolume with a frustum.
<p>
The test assumes that the frustum is in the canonical looking-down-negative-z orientation, so the bounding volume is going to have to be transformed into the frustum's space. (Alternatives include transforming the frustum into the bvolume's space, or transforming both of them into the projection space. Lots of tradeoffs involved, but transforming the bvolume is probably the simplest approach overall.)<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign=top><em>frustum</em> </td><td>the frustum.</td></tr>
</table>
</dl>
<dl compact><dt><b>Returns:</b></dt><dd>inside, outside, or partial.</dd></dl>
<dl compact><dt><b>See also:</b></dt><dd><a class="el" href="classopenvrml_1_1bounding__volume.html#a10">bounding_volume::transform</a> <p>
<a class="el" href="classopenvrml_1_1bounding__volume.html#a9">bounding_volume::ortho_transform</a> </dd></dl>
<p>
Implemented in <a class="el" href="classopenvrml_1_1bounding__sphere.html#a2">openvrml::bounding_sphere</a>, and <a class="el" href="classopenvrml_1_1axis__aligned__bounding__box.html#a1">openvrml::axis_aligned_bounding_box</a>. </td>
</tr>
</table>
<a class="anchor" name="a1" doxytag="openvrml::bounding_volume::maximize" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> void openvrml::bounding_volume::maximize </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [pure virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Maximize the bounding volume.
<p>
<dl compact><dt><b>See also:</b></dt><dd><a class="el" href="classopenvrml_1_1bounding__volume.html#a2">maximized</a> </dd></dl>
<p>
Implemented in <a class="el" href="classopenvrml_1_1bounding__sphere.html#a8">openvrml::bounding_sphere</a>, and <a class="el" href="classopenvrml_1_1axis__aligned__bounding__box.html#a7">openvrml::axis_aligned_bounding_box</a>. </td>
</tr>
</table>
<a class="anchor" name="a2" doxytag="openvrml::bounding_volume::maximized" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> bool openvrml::bounding_volume::maximized </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap> const<code> [pure virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Indicates whether the bounding volume is maximized.
<p>
The convention is that nodes that should be rendered unconditionally set a maximum bounding volume, ensuring that the branch they are on does not get pruned during culling. Stuff like the picking code needs a way to differentiate this from just a really big bounding volume, or an unset bounding volume.<p>
<dl compact><dt><b>Returns:</b></dt><dd><code>true</code> if the bounding voume is maximized; <code>false</code> otherwise.</dd></dl>
<dl compact><dt><b>See also:</b></dt><dd><a class="el" href="classopenvrml_1_1bounding__volume.html#a1">maximize</a> </dd></dl>
<p>
Implemented in <a class="el" href="classopenvrml_1_1bounding__sphere.html#a9">openvrml::bounding_sphere</a>, and <a class="el" href="classopenvrml_1_1axis__aligned__bounding__box.html#a8">openvrml::axis_aligned_bounding_box</a>. </td>
</tr>
</table>
<a class="anchor" name="a9" doxytag="openvrml::bounding_volume::ortho_transform" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> void openvrml::bounding_volume::ortho_transform </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">const <a class="el" href="classopenvrml_1_1mat4f.html">mat4f</a> & </td>
<td class="mdname1" valign="top" nowrap> <em>M</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [pure virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Transform this bounding volume using an orthogonal transfom.
<p>
Orthogonal transformations preserve angles. They include translation, rotation, and uniform scaling. It turns out to be so easy to transform bounding spheres by orthogonal transformations that it's worth special casing. The caller is responsible for assuring that the transformation is in fact orthogonal, otherwise the results are undefined. If in doubt, call transform instead and take the speed hit.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign=top><em>M</em> </td><td>orthonormal transformation matrix in <a class="el" href="classopenvrml_1_1mat4f.html">mat4f</a> format</td></tr>
</table>
</dl>
<dl compact><dt><b>See also:</b></dt><dd>MathUtils </dd></dl>
<p>
Implemented in <a class="el" href="classopenvrml_1_1bounding__sphere.html#a10">openvrml::bounding_sphere</a>, and <a class="el" href="classopenvrml_1_1axis__aligned__bounding__box.html#a9">openvrml::axis_aligned_bounding_box</a>. </td>
</tr>
</table>
<a class="anchor" name="a10" doxytag="openvrml::bounding_volume::transform" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> void openvrml::bounding_volume::transform </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">const <a class="el" href="classopenvrml_1_1mat4f.html">mat4f</a> & </td>
<td class="mdname1" valign="top" nowrap> <em>M</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [pure virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Transform this bounding volume using an affine transfom.
<p>
Affine transformations can include nonuniform scaling. It is much messier to deal with them, but VRML allows nonuniform scaling, so we have to handle it. Note that since all orthogonal transforms are affine, it's safe to always call this routine instead of <code>ortho_transform</code>, but it's likely to be slower. The results are undefined if this routine is called with a non-affine argument. Note that VRML Transform nodes only allow affine transformations, so unless you're doing something tricky this routine should always be safe.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign=top><em>M</em> </td><td>affine transformation matrix. </td></tr>
</table>
</dl>
<p>
Implemented in <a class="el" href="classopenvrml_1_1bounding__sphere.html#a11">openvrml::bounding_sphere</a>, and <a class="el" href="classopenvrml_1_1axis__aligned__bounding__box.html#a10">openvrml::axis_aligned_bounding_box</a>. </td>
</tr>
</table>
</div>
<address class="footer"><a href="http://sourceforge.net"><img src="http://sourceforge.net/sflogo.php?group_id=7151&type=3" width="125" height="37" border="0" alt="SourceForge.net Logo" align="right"></a><a href="http://sourceforge.net/tracker/?func=add&group_id=7151&atid=107151">Report error</a><br>Generated Sun Nov 16 20:22:39 2003 by Doxygen 1.3.4-20031112</address>
</body>
</html>
|
