-
Notifications
You must be signed in to change notification settings - Fork 0
/
al___ray_8hpp_source.html
337 lines (335 loc) · 40.8 KB
/
al___ray_8hpp_source.html
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
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=9"/>
<meta name="generator" content="Doxygen 1.9.1"/>
<meta name="viewport" content="width=device-width, initial-scale=1"/>
<title>Allolib: al_Ray.hpp Source File</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="dynsections.js"></script>
<link href="navtree.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="resize.js"></script>
<script type="text/javascript" src="navtreedata.js"></script>
<script type="text/javascript" src="navtree.js"></script>
<link href="search/search.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="search/searchdata.js"></script>
<script type="text/javascript" src="search/search.js"></script>
<link href="doxygen.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
<tbody>
<tr style="height: 56px;">
<td id="projectalign" style="padding-left: 0.5em;">
<div id="projectname">Allolib
 <span id="projectnumber">1.0</span>
</div>
<div id="projectbrief">C++ Components For Interactive Multimedia</div>
</td>
</tr>
</tbody>
</table>
</div>
<!-- end header part -->
<!-- Generated by Doxygen 1.9.1 -->
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL-v2 */
var searchBox = new SearchBox("searchBox", "search",false,'Search','.html');
/* @license-end */
</script>
<script type="text/javascript" src="menudata.js"></script>
<script type="text/javascript" src="menu.js"></script>
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL-v2 */
$(function() {
initMenu('',true,false,'search.php','Search');
$(document).ready(function() { init_search(); });
});
/* @license-end */</script>
<div id="main-nav"></div>
</div><!-- top -->
<div id="side-nav" class="ui-resizable side-nav-resizable">
<div id="nav-tree">
<div id="nav-tree-contents">
<div id="nav-sync" class="sync"></div>
</div>
</div>
<div id="splitbar" style="-moz-user-select:none;"
class="ui-resizable-handle">
</div>
</div>
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL-v2 */
$(document).ready(function(){initNavTree('al___ray_8hpp_source.html',''); initResizable(); });
/* @license-end */
</script>
<div id="doc-content">
<!-- window showing the filter options -->
<div id="MSearchSelectWindow"
onmouseover="return searchBox.OnSearchSelectShow()"
onmouseout="return searchBox.OnSearchSelectHide()"
onkeydown="return searchBox.OnSearchSelectKey(event)">
</div>
<!-- iframe showing the search results (closed by default) -->
<div id="MSearchResultsWindow">
<iframe src="javascript:void(0)" frameborder="0"
name="MSearchResults" id="MSearchResults">
</iframe>
</div>
<div class="header">
<div class="headertitle">
<div class="title">al_Ray.hpp</div> </div>
</div><!--header-->
<div class="contents">
<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="preprocessor">#ifndef INCLUDE_AL_RAY_HPP</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="preprocessor">#define INCLUDE_AL_RAY_HPP</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>  </div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">/* Allocore --</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> Multimedia / virtual environment application class library</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"></span> </div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> Copyright (C) 2009. AlloSphere Research Group, Media Arts & Technology, UCSB.</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> Copyright (C) 2012. The Regents of the University of California.</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> All rights reserved.</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"></span> </div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> Redistribution and use in source and binary forms, with or without</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> modification, are permitted provided that the following conditions are met:</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"></span> </div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> Redistributions of source code must retain the above copyright notice,</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> this list of conditions and the following disclaimer.</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"></span> </div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> Redistributions in binary form must reproduce the above copyright</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> notice, this list of conditions and the following disclaimer in the</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> documentation and/or other materials provided with the distribution.</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"></span> </div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> Neither the name of the University of California nor the names of its</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> contributors may be used to endorse or promote products derived from</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> this software without specific prior written permission.</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"></span> </div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment"> THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment"> ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment"> LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment"> CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment"> SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment"> INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment"> CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment"> ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment"> POSSIBILITY OF SUCH DAMAGE.</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment"></span> </div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment"></span> </div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment"> File description:</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment"> This is a simple Ray class with some intersection tests</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment"></span> </div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment"> File author(s):</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment"> Tim Wood, 2014, fishuyo@gmail.com</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment">*/</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  </div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="preprocessor">#include "al/math/al_Vec.hpp"</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  </div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="keyword">namespace </span><a class="code" href="namespaceal.html">al</a> {</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  </div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="keyword">template</span> <<span class="keyword">class</span> T></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="keyword">class </span>Ray;</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="keyword">typedef</span> Ray<float> Rayf;</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="keyword">typedef</span> Ray<double> Rayd;</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  </div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="keyword">template</span> <<span class="keyword">class</span> T></div>
<div class="line"><a name="l00058"></a><span class="lineno"><a class="line" href="classal_1_1_ray.html"> 58</a></span> <span class="keyword">class </span><a class="code" href="classal_1_1_ray.html">Ray</a> {</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keyword">public</span>:</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <a class="code" href="classal_1_1_vec.html">Vec<3, T></a> o, d; <span class="comment">// origin and direction of ray</span></div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  </div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <a class="code" href="classal_1_1_ray.html">Ray</a>(){};</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <a class="code" href="classal_1_1_ray.html">Ray</a>(<a class="code" href="classal_1_1_vec.html">Vec<3, T></a> origin, <a class="code" href="classal_1_1_vec.html">Vec<3, T></a> direction) { set(origin, direction); }</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  </div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordtype">void</span> set(<a class="code" href="classal_1_1_vec.html">Vec<3, T></a> origin, <a class="code" href="classal_1_1_vec.html">Vec<3, T></a> direction) {</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  o.<a class="code" href="classal_1_1_vec.html#a42daf838ad2e76c5012c74d1337de909">set</a>(origin);</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  d.<a class="code" href="classal_1_1_vec.html#a42daf838ad2e76c5012c74d1337de909">set</a>(direction.<a class="code" href="classal_1_1_vec.html#a78defc67dd75a3b3212b3af96ad357a7">normalized</a>());</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  }</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  </div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="comment">// return point on ray</span></div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <a class="code" href="classal_1_1_vec.html">Vec<3, T></a> operator()(T t) { <span class="keywordflow">return</span> o + d * t; }</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  </div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <a class="code" href="classal_1_1_vec.html">Vec<3, T></a>& origin() { <span class="keywordflow">return</span> o; }</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <a class="code" href="classal_1_1_vec.html">Vec<3, T></a>& direction() { <span class="keywordflow">return</span> d; }</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  </div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  T intersectPlane(<a class="code" href="classal_1_1_vec.html">Vec<3, T></a> p0, <a class="code" href="classal_1_1_vec.html">Vec<3, T></a> n) {</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  T den = n.<a class="code" href="classal_1_1_vec.html#aa5fee82d55d3f5cc48443e1f19903aad">dot</a>(d);</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keywordflow">if</span> (den == 0) <span class="keywordflow">return</span> -1;</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordflow">return</span> n.<a class="code" href="classal_1_1_vec.html#aa5fee82d55d3f5cc48443e1f19903aad">dot</a>(p0 - o) / den;</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  }</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  </div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  T intersectCircle(<a class="code" href="classal_1_1_vec.html">Vec<3, T></a> p0, <a class="code" href="classal_1_1_vec.html">Vec<3, T></a> n, T rmax, T rmin = 0.0) {</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  T den = n.<a class="code" href="classal_1_1_vec.html#aa5fee82d55d3f5cc48443e1f19903aad">dot</a>(d);</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keywordflow">if</span> (den == 0) <span class="keywordflow">return</span> -1;</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  T t = n.<a class="code" href="classal_1_1_vec.html#aa5fee82d55d3f5cc48443e1f19903aad">dot</a>(p0 - o) / den;</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  T r = ((*this)(t)-p0).mag();</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keywordflow">if</span> (r <= rmax && r >= rmin)</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="keywordflow">return</span> t;</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keywordflow">return</span> -1;</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  }</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  </div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="comment">// intersect sphere</span></div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  T intersectSphere(<a class="code" href="classal_1_1_vec.html">Vec<3, T></a> cen, T radius) {</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <a class="code" href="classal_1_1_vec.html">Vec<3, T></a> o_c = o - cen;</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  T A = d.<a class="code" href="classal_1_1_vec.html#aa5fee82d55d3f5cc48443e1f19903aad">dot</a>(d);</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  T B = 2. * (d.<a class="code" href="classal_1_1_vec.html#aa5fee82d55d3f5cc48443e1f19903aad">dot</a>(o_c));</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  T C = (o_c.<a class="code" href="classal_1_1_vec.html#aa5fee82d55d3f5cc48443e1f19903aad">dot</a>(o_c)) - radius * radius;</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  T det = B * B - 4 * A * C;</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  </div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keywordflow">if</span> (det > 0.) {</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  T t1 = (-B - sqrt(det)) / (2. * A);</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keywordflow">if</span> (t1 > 0.) <span class="keywordflow">return</span> t1;</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  T t2 = (-B + sqrt(det)) / (2. * A);</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="keywordflow">if</span> (t2 > 0.) <span class="keywordflow">return</span> t2;</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  </div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (det == 0.) {</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  T t = -B / (2. * A);</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="keywordflow">if</span> (t > 0.) <span class="keywordflow">return</span> t;</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  }</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keywordflow">return</span> -1.; <span class="comment">// will be ignoring negative intersections -1 qualifies a miss</span></div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  }</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  </div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keywordtype">bool</span> intersectsSphere(<a class="code" href="classal_1_1_vec.html">Vec<3, T></a> cen, T radius) {</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keywordflow">return</span> intersectSphere(cen, radius) > 0.;</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  }</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  </div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  T intersectBox(<a class="code" href="classal_1_1_vec.html">Vec<3, T></a> cen, <a class="code" href="classal_1_1_vec.html">Vec<3, T></a> scl) {</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="comment">// courtesy of http://www.cs.utah.edu/~awilliam/box/</span></div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="keywordtype">float</span> tmin, tmax, tymin, tymax, tzmin, tzmax;</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  </div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <a class="code" href="classal_1_1_vec.html">Vec<3, T></a> parameters[2];</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <a class="code" href="classal_1_1_vec.html">Vec<3, T></a> <a class="code" href="group___math.html#ga2fd420846f99fa0c8c500209a66995de">min</a> = cen - scl / 2;</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <a class="code" href="classal_1_1_vec.html">Vec<3, T></a> <a class="code" href="group___math.html#ga7075f46376a9dcccc420f8dd1b329812">max</a> = cen + scl / 2;</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  parameters[0] = <a class="code" href="group___math.html#ga2fd420846f99fa0c8c500209a66995de">min</a>;</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  parameters[1] = <a class="code" href="group___math.html#ga7075f46376a9dcccc420f8dd1b329812">max</a>;</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  </div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <a class="code" href="classal_1_1_vec.html">Vec<3, T></a> inv_direction = 1.0 / d;</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <span class="keywordtype">int</span> sign[3];</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  sign[0] = (inv_direction.x < 0);</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  sign[1] = (inv_direction.y < 0);</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  sign[2] = (inv_direction.z < 0);</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  </div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  tmin = (parameters[sign[0]].x - o.x) * inv_direction.x;</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  tmax = (parameters[1 - sign[0]].x - o.x) * inv_direction.x;</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  tymin = (parameters[sign[1]].y - o.y) * inv_direction.y;</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  tymax = (parameters[1 - sign[1]].y - o.y) * inv_direction.y;</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="keywordflow">if</span> ((tmin > tymax) || (tymin > tmax)) <span class="keywordflow">return</span> -1.0;</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <span class="keywordflow">if</span> (tymin > tmin) tmin = tymin;</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <span class="keywordflow">if</span> (tymax < tmax) tmax = tymax;</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  tzmin = (parameters[sign[2]].z - o.z) * inv_direction.z;</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  tzmax = (parameters[1 - sign[2]].z - o.z) * inv_direction.z;</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="keywordflow">if</span> ((tmin > tzmax) || (tzmin > tmax)) <span class="keywordflow">return</span> -1.0;</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="keywordflow">if</span> (tzmin > tmin) tmin = tzmin;</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="keywordflow">if</span> (tzmax < tmax) tmax = tzmax;</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  </div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="keywordflow">if</span> (tmin < 0.0)</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="keywordflow">if</span> (tmax < 0.0)</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="keywordflow">return</span> -1.0;</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keywordflow">return</span> tmax;</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <span class="keywordflow">return</span> tmin;</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  }</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  </div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keywordtype">bool</span> intersectsBox(<a class="code" href="classal_1_1_vec.html">Vec<3, T></a> cen, <a class="code" href="classal_1_1_vec.html">Vec<3, T></a> scl) {</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="keywordflow">return</span> intersectBox(cen, scl) > 0.0;</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  }</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  </div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="comment">// intersect cylinder positioned at origin oriented with Z axis</span></div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  T intersectCylinderXY(T radius) {</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  T A = d.x * d.x + d.y * d.y;</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  T B = 2. * (d.x * o.x + d.y * o.y);</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  T C = (o.x * o.x + o.y * o.y) - radius * radius;</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  T det = B * B - 4 * A * C;</div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  </div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="keywordflow">if</span> (det > 0.) {</div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  T t1 = (-B - sqrt(det)) / (2. * A);</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="keywordflow">if</span> (t1 > 0.) <span class="keywordflow">return</span> t1;</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  T t2 = (-B + sqrt(det)) / (2. * A);</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="keywordflow">if</span> (t2 > 0.) <span class="keywordflow">return</span> t2;</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  </div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (det == 0.) {</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  T t = -B / (2. * A);</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="keywordflow">if</span> (t > 0.) <span class="keywordflow">return</span> t;</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  }</div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="keywordflow">return</span> -1.; <span class="comment">// will be ignoring negative intersections so this is ok for</span></div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  <span class="comment">// now</span></div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  }</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  </div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="comment">// intersect cylinder positioned at origin oriented with Y axis</span></div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  T intersectCylinderXZ(T radius) {</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  T A = d.x * d.x + d.z * d.z;</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  T B = 2. * (d.x * o.x + d.z * o.z);</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  T C = (o.x * o.x + o.z * o.z) - radius * radius;</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  T det = B * B - 4 * A * C;</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  </div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <span class="keywordflow">if</span> (det > 0.) {</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  T t1 = (-B - sqrt(det)) / (2. * A);</div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <span class="keywordflow">if</span> (t1 > 0.) <span class="keywordflow">return</span> t1;</div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  T t2 = (-B + sqrt(det)) / (2. * A);</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <span class="keywordflow">if</span> (t2 > 0.) <span class="keywordflow">return</span> t2;</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  </div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (det == 0.) {</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  T t = -B / (2. * A);</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <span class="keywordflow">if</span> (t > 0.) <span class="keywordflow">return</span> t;</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  }</div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <span class="keywordflow">return</span> -1.; <span class="comment">// will be ignoring negative intersections so this is ok for</span></div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  <span class="comment">// now</span></div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  }</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  </div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <span class="comment">// intersect with the capsule shape of the AlloSphere</span></div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <span class="comment">// assumes the ray is originating near the center of the sphere</span></div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="comment">// check this..</span></div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  T intersectAllosphere() {</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  T radius = 4.842f;</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  T bridgeWidth2 = 2.09f / 2.;</div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  </div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="comment">// intersect with bridge cylinder</span></div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  T t = intersectCylinderXY(radius);</div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  </div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  <span class="comment">// if no intersection intersect with appropriate hemisphere</span></div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  <span class="keywordflow">if</span> (t == -1.) {</div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  <span class="keywordflow">if</span> (d.z < 0.)</div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  <span class="keywordflow">return</span> intersectSphere(<a class="code" href="classal_1_1_vec.html">Vec<3, T></a>(0, 0, -bridgeWidth2), radius);</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <span class="keywordflow">return</span> intersectSphere(<a class="code" href="classal_1_1_vec.html">Vec<3, T></a>(0, 0, bridgeWidth2), radius);</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  }</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  </div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <a class="code" href="classal_1_1_vec.html">Vec<3, T></a> p = (*this)(t);</div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  <span class="keywordflow">if</span> (p.z < -bridgeWidth2) {</div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  <span class="keywordflow">return</span> intersectSphere(<a class="code" href="classal_1_1_vec.html">Vec<3, T></a>(0, 0, -bridgeWidth2), radius);</div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (p.z > bridgeWidth2) {</div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  <span class="keywordflow">return</span> intersectSphere(<a class="code" href="classal_1_1_vec.html">Vec<3, T></a>(0, 0, bridgeWidth2), radius);</div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  } <span class="keywordflow">else</span></div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <span class="keywordflow">return</span> t;</div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  }</div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span> };</div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  </div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span> } <span class="comment">// namespace al</span></div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  </div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span> <span class="preprocessor">#endif</span></div>
<div class="ttc" id="aclassal_1_1_ray_html"><div class="ttname"><a href="classal_1_1_ray.html">al::Ray</a></div><div class="ttdef"><b>Definition:</b> <a href="al___ray_8hpp_source.html#l00058">al_Ray.hpp:58</a></div></div>
<div class="ttc" id="aclassal_1_1_vec_html"><div class="ttname"><a href="classal_1_1_vec.html">al::Vec< 3, T ></a></div></div>
<div class="ttc" id="aclassal_1_1_vec_html_a42daf838ad2e76c5012c74d1337de909"><div class="ttname"><a href="classal_1_1_vec.html#a42daf838ad2e76c5012c74d1337de909">al::Vec::set</a></div><div class="ttdeci">Vec & set(const Vec< N, T2 > &v)</div><div class="ttdoc">Set elements from another vector.</div><div class="ttdef"><b>Definition:</b> <a href="al___vec_8hpp_source.html#l00301">al_Vec.hpp:301</a></div></div>
<div class="ttc" id="aclassal_1_1_vec_html_a78defc67dd75a3b3212b3af96ad357a7"><div class="ttname"><a href="classal_1_1_vec.html#a78defc67dd75a3b3212b3af96ad357a7">al::Vec::normalized</a></div><div class="ttdeci">Vec normalized(T scale=T(1)) const</div><div class="ttdoc">Return closest vector lying on unit sphere.</div><div class="ttdef"><b>Definition:</b> <a href="al___vec_8hpp_source.html#l00489">al_Vec.hpp:489</a></div></div>
<div class="ttc" id="aclassal_1_1_vec_html_aa5fee82d55d3f5cc48443e1f19903aad"><div class="ttname"><a href="classal_1_1_vec.html#aa5fee82d55d3f5cc48443e1f19903aad">al::Vec::dot</a></div><div class="ttdeci">T dot(const Vec< N, U > &v) const</div><div class="ttdoc">Returns dot (inner) product between vectors.</div><div class="ttdef"><b>Definition:</b> <a href="al___vec_8hpp_source.html#l00406">al_Vec.hpp:406</a></div></div>
<div class="ttc" id="agroup___math_html_ga2fd420846f99fa0c8c500209a66995de"><div class="ttname"><a href="group___math.html#ga2fd420846f99fa0c8c500209a66995de">al::min</a></div><div class="ttdeci">T min(const T &v1, const T &v2, const T &v3)</div><div class="ttdef"><b>Definition:</b> <a href="al___functions_8hpp_source.html#l00844">al_Functions.hpp:844</a></div></div>
<div class="ttc" id="agroup___math_html_ga7075f46376a9dcccc420f8dd1b329812"><div class="ttname"><a href="group___math.html#ga7075f46376a9dcccc420f8dd1b329812">al::max</a></div><div class="ttdeci">T max(const T &v1, const T &v2, const T &v3)</div><div class="ttdef"><b>Definition:</b> <a href="al___functions_8hpp_source.html#l00840">al_Functions.hpp:840</a></div></div>
<div class="ttc" id="anamespaceal_html"><div class="ttname"><a href="namespaceal.html">al</a></div><div class="ttdef"><b>Definition:</b> <a href="al___app_8hpp_source.html#l00023">al_App.hpp:23</a></div></div>
</div><!-- fragment --></div><!-- contents -->
</div><!-- doc-content -->
<!-- start footer part -->
<div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
<ul>
<li class="navelem"><a class="el" href="dir_e6bb53534ac0e427887cf7a94c0c004e.html">C:</a></li><li class="navelem"><a class="el" href="dir_8ceffd4ee35c3518d4e8bdc7e638efe8.html">Users</a></li><li class="navelem"><a class="el" href="dir_d934af30b392b1c85e577a193a4f44d7.html">Andres</a></li><li class="navelem"><a class="el" href="dir_e68da7aceac684d2d8b9f1b11e1c2d97.html">source</a></li><li class="navelem"><a class="el" href="dir_fcc7705357f5b24b756c781e261be61a.html">repos</a></li><li class="navelem"><a class="el" href="dir_c3c6d9593ff25ad9938aa507653e60f1.html">casm_viewer</a></li><li class="navelem"><a class="el" href="dir_62b775495639e85334a47dd0b350fd78.html">external</a></li><li class="navelem"><a class="el" href="dir_b57b95b4f0b0651157add3c4117135ea.html">tinc</a></li><li class="navelem"><a class="el" href="dir_a51c8fbca25ad649a2e41de73b4ed7a8.html">external</a></li><li class="navelem"><a class="el" href="dir_f6b0d4003da5aa0ecdbed61a62e8b0a3.html">allolib</a></li><li class="navelem"><a class="el" href="dir_1a17cbf7a13c3de19497337dcee9a11d.html">include</a></li><li class="navelem"><a class="el" href="dir_c24702039c85b0e1007cbbfcdd096437.html">al</a></li><li class="navelem"><a class="el" href="dir_28ad8dc9c9e98e8dc3b1f32a9f794e8f.html">math</a></li><li class="navelem"><b>al_Ray.hpp</b></li>
<li class="footer">Generated on Thu Apr 8 2021 13:24:23 for Allolib by <a href="https://www.doxygen.org/index.html"><img class="footer" src="doxygen.svg" width="104" height="31" alt="doxygen"/></a> 1.9.1 </li>
</ul>
</div>
</body>
</html>