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
|
<!doctype html public "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
<HTML>
<HEAD>
<TITLE>nevrax.org : docs</TITLE>
<LINK REL=stylesheet TYPE="text/css" HREF="http://www.nevrax.org/inc/css/nevrax.css">
<link href="doxygen.css" rel="stylesheet" type="text/css">
</HEAD>
<BODY MARGINHEIGHT="0" MARGINWIDTH="0">
<!-- uplinks -->
<TABLE CELLSPACING=0 CELLPADDING=0 BORDER=0>
<TR>
<TD WIDTH=16><IMG SRC="http://www.nevrax.org/inc/img/pixel.gif" WIDTH="16" HEIGHT="16" BORDER=0 ALT=""></TD>
<TD WIDTH=140 BGCOLOR=#dddddd><IMG SRC="http://www.nevrax.org/inc/img/pixel.gif" WIDTH="140" HEIGHT="16" BORDER=0 ALT=""></TD>
<TD WIDTH=16><IMG SRC="http://www.nevrax.org/inc/img/pixel.gif" WIDTH="16" HEIGHT="16" BORDER=0 ALT=""></TD>
<TD><IMG width=6 height=14 SRC="http://www.nevrax.org/inc/img/reddots.gif" ALT="#" VSPACE=2 HSPACE=2 BORDER=0 ></TD><TD VALIGN=middle> <A CLASS=uplinks HREF=http://www.nevrax.org><b>Home</B></FONT></A> </TD>
<TD><IMG width=6 height=14 SRC="http://www.nevrax.org/inc/img/reddots.gif" ALT="#" VSPACE=2 HSPACE=2 BORDER=0 ></TD><TD VALIGN=middle> <A CLASS=uplinks HREF=http://www.nevrax.com><b>nevrax.com</B></FONT></A> </TD>
</TR>
</TABLE>
<!-- banner Nevrax -->
<TABLE CELLSPACING=0 CELLPADDING=0 BORDER=0 WIDTH=100%>
<TR><TD BGCOLOR="#000000" BACKGROUND="http://www.nevrax.org/inc/img/black_banner.jpg"><A HREF="http://www.nevrax.org"><IMG SRC="http://www.nevrax.org/inc/img/nevrax.gif" WIDTH="170" HEIGHT="45" BORDER=0 ALT="Nevrax" ></A></TD></TR>
</TABLE>
<!-- main table -->
<TABLE CELLSPACING=0 CELLPADDING=0 BORDER=0 height=100%>
<TR>
<TD WIDTH=16><IMG SRC="http://www.nevrax.org/inc/img/pixel.gif" WIDTH="16" HEIGHT="10" BORDER=0 ALT=""></TD>
<TD WIDTH=140 BGCOLOR=#dddddd VALIGN=TOP ALIGN=middle><IMG SRC="http://www.nevrax.org/inc/img/pixel.gif" WIDTH="140" HEIGHT="10" BORDER=0 ALT="">
<!------ Begin Box ------>
<TABLE BORDER=0 CELLSPACING=0 CELLPADDING=0 BGCOLOR=black><TR><TD><TABLE border=0 cellspacing=2 cellpadding=0 width=120><tr><TD ALIGN=middle bgcolor=black>
<FONT COLOR=white FACE="sans-serif"><B>Nevrax.org</B></FONT></TD></TR><tr><td colspan=2 bgcolor=#FFFFFF>
<TABLE cellspacing=0 cellpadding=1 border=0>
<tr><td ALIGN=middle><a class='linkbox' href="http://www.nevrax.org/news/" TITLE="Rubrique news"><img width=13 height=15 hspace=5 border=0 src=http://www.nevrax.org/inc/img/picto-news.gif ALT=#></A></td><td><a class='linkbox' href="http://www.nevrax.org/news/" TITLE="News">News</a></td></tr>
<tr><td ALIGN=middle><a class='linkbox' href="http://www.nevrax.org/mail/" TITLE="Rubrique mail"><img width=15 height=11 hspace=5 border=0 src=http://www.nevrax.org/inc/img/picto-mail.gif ALT=#></A></td><td><a class='linkbox' href="http://www.nevrax.org/mail/" TITLE="Mailing list archive">Mailing-list</a></td></tr>
<tr><td ALIGN=middle><a class='linkbox' href="http://www.nevrax.org/docs/" TITLE="Rubrique docs"><img width=14 height=16 hspace=5 border=0 src=http://www.nevrax.org/inc/img/picto-docs.gif ALT=#></A></td><td><a class='linkbox' href="http://www.nevrax.org/docs/" TITLE="Documentation">Documentation</a></td></tr>
<tr><td ALIGN=middle><a class='linkbox' href="http://www.nevrax.org/cvs/" TITLE="Rubrique cvs"><img width=13 height=17 hspace=5 border=0 src=http://www.nevrax.org/inc/img/picto-cvs.gif ALT=#></A></td><td><a class='linkbox' href="http://www.nevrax.org/cvs/" TITLE="CVS Web">CVS</a></td></tr>
<tr><td ALIGN=middle><a class='linkbox' href="http://www.nevrax.org/bugs/" TITLE="Rubrique bugs"><img width=20 height=16 hspace=5 border=0 src=http://www.nevrax.org/inc/img/picto-bugs.gif ALT=#></A></td><td><a class='linkbox' href="http://www.nevrax.org/bugs/" TITLE="Bugtracking">Bugs</a></td></tr>
<tr><td ALIGN=middle><a class='linkbox' href="http://www.nevrax.org/GPL.php3" TITLE="Rubrique license"><img width=18 height=12 hspace=5 border=0 src=http://www.nevrax.org/inc/img/picto-gpl.gif ALT=#></A></td><td><a class='linkbox' href="http://www.nevrax.org/GPL.php3" TITLE="License">License</a></td></tr>
</TABLE>
</TD></TR></TABLE></TD></TR></TABLE>
<!------ End Box ------>
</TD>
<TD WIDTH=15><IMG SRC="http://www.nevrax.org/inc/img/pixel.gif" WIDTH="16" HEIGHT="16" BORDER=0 ALT=""></TD>
<TD ALIGN=left valign=top><IMG SRC="http://www.nevrax.org/inc/img/pixel.gif" WIDTH="140" HEIGHT="10" BORDER=0 ALT="">
<!-- title -->
<TABLE background="http://www.nevrax.org/inc/img/redline.gif" CELLSPACING=0 CELLPADDING=0 BORDER=0 width=100%><tr><td>
<A HREF="http://www.nevrax.org/docs/"><img src="http://www.nevrax.org/inc/img/t_docs.gif" ALT="Docs" HEIGHT=20 BORDER=0></A>
</td><td><IMG SRC="http://www.nevrax.org/inc/img/pixel.gif" WIDTH="1" HEIGHT="1" BORDER=0 ALT="">
</td></tr></table>
<!-- block -->
<TABLE bgcolor="#dddddd" CELLSPACING=0 CELLPADDING=0 BORDER=0 width=100%><tr><td width=1% valign=middle><img width=6 height=14 hspace=2 vspace=2 src="http://www.nevrax.org/inc/img/reddots.gif"></TD>
<TD><B>Documentation</B></TD>
<TD ALIGN=RIGHT> </td>
</tr></table>
<!-- Generated by Doxygen 1.2.2 on Thu May 31 22:01:26 2001 -->
<center>
<a class="qindex" href="index.html">Main Page</a> <a class="qindex" href="namespaces.html">Namespace List</a> <a class="qindex" href="hierarchy.html">Class Hierarchy</a> <a class="qindex" href="classes.html">Alphabetical List</a> <a class="qindex" href="annotated.html">Compound List</a> <a class="qindex" href="files.html">File List</a> <a class="qindex" href="namespacemembers.html">Namespace Members</a> <a class="qindex" href="functions.html">Compound Members</a> <a class="qindex" href="globals.html">File Members</a> <a class="qindex" href="pages.html">Related Pages</a> <a class="qindexRef" doxygen="_cgi:http://www.nevrax.org/cgi-bin/nel-search.cgi" href="http://www.nevrax.org/cgi-bin/nel-search.cgi">Search</a> </center>
<hr><h1>track_bezier.h</h1><a href="track_bezier_h.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001
00007 <font class="comment">/* Copyright, 2001 Nevrax Ltd.
</font>00008 <font class="comment"> *
</font>00009 <font class="comment"> * This file is part of NEVRAX NEL.
</font>00010 <font class="comment"> * NEVRAX NEL is free software; you can redistribute it and/or modify
</font>00011 <font class="comment"> * it under the terms of the GNU General Public License as published by
</font>00012 <font class="comment"> * the Free Software Foundation; either version 2, or (at your option)
</font>00013 <font class="comment"> * any later version.
</font>00014 <font class="comment">
</font>00015 <font class="comment"> * NEVRAX NEL is distributed in the hope that it will be useful, but
</font>00016 <font class="comment"> * WITHOUT ANY WARRANTY; without even the implied warranty of
</font>00017 <font class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
</font>00018 <font class="comment"> * General Public License for more details.
</font>00019 <font class="comment">
</font>00020 <font class="comment"> * You should have received a copy of the GNU General Public License
</font>00021 <font class="comment"> * along with NEVRAX NEL; see the file COPYING. If not, write to the
</font>00022 <font class="comment"> * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
</font>00023 <font class="comment"> * MA 02111-1307, USA.
</font>00024 <font class="comment"> */</font>
00025
00026
00027 <font class="preprocessor">#ifndef NL_TRACK_KEYFRAMER_H
</font>00028 <font class="preprocessor"></font><font class="preprocessor">#error "internal file included from track_keyframer.h"
</font>00029 <font class="preprocessor"></font><font class="preprocessor">#endif
</font>00030 <font class="preprocessor"></font>
00031
00032
00033 <font class="comment">// ***************************************************************************</font>
00034 <font class="comment">// ***************************************************************************</font>
00035 <font class="comment">// Bezier Keyframer.</font>
00036 <font class="comment">// ***************************************************************************</font>
00037 <font class="comment">// ***************************************************************************</font>
00038
00039
00040 <font class="comment">// ***************************************************************************
</font>00048 <font class="comment"></font>template<class CKeyT, class T>
<a name="l00049"></a><a class="code" href="class_CTrackKeyFramerBezier.html">00049</a> <font class="keyword">class </font><a class="code" href="class_CTrackKeyFramerBezier.html">CTrackKeyFramerBezier</a> : <font class="keyword">public</font> <a class="code" href="class_ITrackKeyFramer.html">ITrackKeyFramer</a><CKeyT>
00050 {
00051 <font class="keyword">public</font>:
00052
<a name="l00054"></a><a class="code" href="class_CTrackKeyFramerBezier.html#a0">00054</a> <font class="keyword">virtual</font> <font class="keyword">const</font> IAnimatedValue& <a class="code" href="class_CTrackKeyFramerBezier.html#a0">getValue</a> ()<font class="keyword"> const
</font>00055 <font class="keyword"> </font>{
00056 <font class="keywordflow">return</font> _Value;
00057 }
00058
00059 <font class="keyword">protected</font>:
00060
<a name="l00061"></a><a class="code" href="class_CTrackKeyFramerBezier.html#t0">00061</a> <font class="keyword">typedef</font> <font class="keyword">typename</font> CKeyT::TValueType TKeyValueType;
00062
00063
00065 <font class="comment">// @{</font>
00066
<a name="l00068"></a><a class="code" href="class_CTrackKeyFramerBezier.html#b0">00068</a> <font class="keyword">virtual</font> <font class="keywordtype">void</font> <a class="code" href="class_CTrackKeyFramerBezier.html#b0">evalKey</a> ( <font class="keyword">const</font> CKeyT* previous, <font class="keyword">const</font> CKeyT* next,
00069 CAnimationTime datePrevious, CAnimationTime dateNext,
00070 CAnimationTime date )<font class="keyword">
</font>00071 <font class="keyword"> </font>{
00072 <font class="keywordflow">if</font>(previous && next && !previous->Step)
00073 {
00074 <font class="comment">// lerp from previous to cur.</font>
00075 date-= datePrevious;
00076 date*= previous->OODeltaTime;
00077 <a class="code" href="namespace_NLMISC.html#a177">NLMISC::clamp</a>(date, 0,1);
00078
00079 <font class="comment">// Bezier interpolation.</font>
00080 <font class="keywordtype">float</font> s= date;
00081 <font class="keywordtype">float</font> s2 = s * s;
00082 <font class="keywordtype">float</font> s3 = s2 * s;
00083 <font class="keywordtype">float</font> u = 1.0f - s;
00084 <font class="keywordtype">float</font> u2 = u * u;
00085 <font class="keywordtype">float</font> u3 = u2 * u;
00086
00087 <font class="comment">// compute Bezier control points from tangents.</font>
00088 TKeyValueType cp0, cp1;
00089
00090 <font class="comment">// NB: loop case: dateNext is always > datePrevious....</font>
00091 cp0 = previous->Value + previous->OutTan * (dateNext-datePrevious) / 3.0f;
00092 cp1 = next->Value + next->InTan * (dateNext-datePrevious) / 3.0f;
00093
00094 copyToValue(_Value.Value, previous->Value*u3 + cp0*3.0f*u2*s
00095 + cp1*3.0f*u*s2 + next->Value*s3);
00096 }
00097 <font class="keywordflow">else</font>
00098 {
00099 <font class="keywordflow">if</font> (previous)
00100 copyToValue(_Value.Value, previous->Value);
00101 <font class="keywordflow">else</font>
00102 <font class="keywordflow">if</font> (next)
00103 copyToValue(_Value.Value, next->Value);
00104 }
00105 }
00106
<a name="l00108"></a><a class="code" href="class_CTrackKeyFramerBezier.html#b1">00108</a> <font class="keyword">virtual</font> <font class="keywordtype">void</font> <a class="code" href="class_CTrackKeyFramerBezier.html#b1">compile</a>()<font class="keyword">
</font>00109 <font class="keyword"> </font>{
00110 ITrackKeyFramer<CKeyT>::compile();
00111
00112 <font class="comment">// Nothing else to do!! Tangents are given from user.</font>
00113 }
00114
00115 <font class="comment">// @}</font>
00116
00117 <font class="keyword">private</font>:
<a name="l00118"></a><a class="code" href="class_CTrackKeyFramerBezier.html#o0">00118</a> CAnimatedValueBlendable<T> _Value;
00119 };
00120
00121
00122
00123 <font class="comment">// ***************************************************************************
</font><a name="l00131"></a><a class="code" href="class_CTrackKeyFramerBezier_ltCKeyBezierQuat_x_CQuat_gt.html">00131</a> <font class="comment"></font><font class="keyword">class </font><a class="code" href="class_CTrackKeyFramerBezier.html">CTrackKeyFramerBezier</a><CKeyBezierQuat, CQuat> : <font class="keyword">public</font> <a class="code" href="class_ITrackKeyFramer.html">ITrackKeyFramer</a><CKeyBezierQuat>
00132 {
00133 <font class="keyword">public</font>:
00134
<a name="l00136"></a><a class="code" href="class_CTrackKeyFramerBezier_ltCKeyBezierQuat_x_CQuat_gt.html#a0">00136</a> <font class="keyword">virtual</font> <font class="keyword">const</font> IAnimatedValue& getValue ()<font class="keyword"> const
</font>00137 <font class="keyword"> </font>{
00138 <font class="keywordflow">return</font> _Value;
00139 }
00140
00141 <font class="keyword">protected</font>:
00142
00144 <font class="comment">// @{</font>
00145
<a name="l00147"></a><a class="code" href="class_CTrackKeyFramerBezier_ltCKeyBezierQuat_x_CQuat_gt.html#b0">00147</a> <font class="keyword">virtual</font> <font class="keywordtype">void</font> evalKey ( <font class="keyword">const</font> CKeyBezierQuat* previous, <font class="keyword">const</font> CKeyBezierQuat* next,
00148 CAnimationTime datePrevious, CAnimationTime dateNext,
00149 CAnimationTime date )<font class="keyword">
</font>00150 <font class="keyword"> </font>{
00151 <font class="keywordflow">if</font>(previous && next)
00152 {
00153 <font class="comment">// lerp from previous to cur.</font>
00154 date-= datePrevious;
00155 date*= previous->OODeltaTime;
00156 <a class="code" href="namespace_NLMISC.html#a177">NLMISC::clamp</a>(date, 0,1);
00157
00158 <font class="comment">// quad slerp.</font>
00159 _Value.Value = CQuat::squad(previous->Value, previous->A, next->A, next->Value, date);
00160 }
00161 <font class="keywordflow">else</font>
00162 {
00163 <font class="keywordflow">if</font> (previous)
00164 copyToValue(_Value.Value, previous->Value);
00165 <font class="keywordflow">else</font>
00166 <font class="keywordflow">if</font> (next)
00167 copyToValue(_Value.Value, next->Value);
00168 }
00169 }
00170
<a name="l00172"></a><a class="code" href="class_CTrackKeyFramerBezier_ltCKeyBezierQuat_x_CQuat_gt.html#b1">00172</a> <font class="keyword">virtual</font> <font class="keywordtype">void</font> compile()<font class="keyword">
</font>00173 <font class="keyword"> </font>{
00174 ITrackKeyFramer<CKeyBezierQuat>::compile();
00175
00176 <font class="comment">// makeclosest quaternions, Tangents Precompute.</font>
00177 sint nKeys= _MapKey.size();
00178 <font class="keywordflow">if</font>(nKeys<=1)
00179 <font class="keywordflow">return</font>;
00180
00181 TMapTimeCKey::iterator it;
00182 TMapTimeCKey::iterator itNext;
00183 TMapTimeCKey::iterator itPrev;
00184
00185 it= _MapKey.begin(); <font class="comment">// first key.</font>
00186 itNext= it; itNext++; <font class="comment">// second key.</font>
00187 itPrev= _MapKey.end(); <font class="comment">// end key.</font>
00188
00189 <font class="comment">// Compute all keys.</font>
00190 <font class="keywordflow">for</font>(;it!=_MapKey.end();)
00191 {
00192
00193 CKeyBezierQuat &key= it->second;
00194 CQuat &cur= key.Value;
00195
00196 <font class="keywordflow">if</font>(itPrev!= _MapKey.end())
00197 {
00198 cur.makeClosest(itPrev->second.Value);
00199 }
00200
00201 CQuat prev, next;
00202
00203 <font class="comment">// compute prev / next.</font>
00204 <font class="keywordflow">if</font>(itPrev!= _MapKey.end())
00205 prev= itPrev->second.Value;
00206 <font class="keywordflow">else</font>
00207 prev= itNext->second.Value;
00208 <font class="keywordflow">if</font>(itNext!= _MapKey.end())
00209 next= itNext->second.Value;
00210 <font class="keywordflow">else</font>
00211 next= itPrev->second.Value;
00212
00213 <font class="comment">// Compute A.</font>
00214 CQuat qm,qp,r;
00215
00216 qm = CQuat::lnDif(cur, prev);
00217 qp = CQuat::lnDif(cur, next);
00218 r = -.25f*(qm+qp);
00219 key.A= cur*(r.exp());
00220
00221 <font class="comment">// Next key!!</font>
00222 itPrev= it;
00223 it++;
00224
00225 <font class="keywordflow">if</font>(itNext!= _MapKey.end())
00226 itNext++;
00227 }
00228
00229 }
00230
00231 <font class="comment">// @}</font>
00232
00233 <font class="keyword">private</font>:
<a name="l00234"></a><a class="code" href="class_CTrackKeyFramerBezier_ltCKeyBezierQuat_x_CQuat_gt.html#o0">00234</a> CAnimatedValueBlendable<CQuat> _Value;
00235 };
</div></pre>
<!-- footer -->
<BR><FONT Size=+5> </FONT>
</TD>
<TD WIDTH=15><IMG SRC=http://www.nevrax.org/inc/img/pixel.gif WIDTH=15 HEIGHT=15 BORDER=0 ALT=""></TD>
</TR>
</TABLE>
</BODY>
</HTML>
|
