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+</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 Tue May 29 22:01:22 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_tcb.h</h1><a href="track_tcb_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_H +</font>00028 <font class="preprocessor"></font><font class="preprocessor">#error "internal file included from track.h" +</font>00029 <font class="preprocessor"></font><font class="preprocessor">#endif +</font>00030 <font class="preprocessor"></font> +00031 <font class="comment">// ***************************************************************************</font> +00032 <font class="comment">// ***************************************************************************</font> +00033 <font class="comment">// TCB Keyframes.</font> +00034 <font class="comment">// ***************************************************************************</font> +00035 <font class="comment">// ***************************************************************************</font> +00036 +00037 +00038 <font class="comment">// *************************************************************************** +</font>00046 <font class="comment"></font>template<class CKeyT, class T, class TMapTimeCKey> +<a name="l00047"></a><a class="code" href="class_CTCBTools.html">00047</a> <font class="keyword">class </font><a class="code" href="class_CTCBTools.html">CTCBTools</a> +00048 { +00049 <font class="keyword">protected</font>: +<a name="l00050"></a><a class="code" href="class_CTCBTools.html#t0">00050</a> <font class="keyword">typedef</font> <font class="keyword">typename</font> TMapTimeCKey::iterator TMapTimeCKeyIterator; +00051 +00052 +00053 +<a name="l00055"></a><a class="code" href="class_CTCBTools.html#b0">00055</a> <font class="keywordtype">void</font> <a class="code" href="class_CTCBTools.html#b0">compileTCBEase</a>(TMapTimeCKey &mapKey, <font class="keywordtype">bool</font> loopMode)<font class="keyword"> +</font>00056 <font class="keyword"> </font>{ +00057 TMapTimeCKeyIterator it= mapKey.begin(); +00058 <font class="keywordflow">for</font>(;it!=mapKey.end();it++) +00059 { +00060 TMapTimeCKeyIterator next= it; +00061 next++; +00062 +00063 <font class="comment">// loop mgt. must compute ease from last to first (usefull if _RangeLock is false).</font> +00064 <font class="keywordflow">if</font>(next==mapKey.end() && loopMode && mapKey.size()>1) +00065 next= mapKey.begin(); +00066 +00067 <font class="comment">// Ease Precompute.</font> +00068 <font class="comment">//=================</font> +00069 CKeyT &key= it->second; +00070 <font class="keywordflow">if</font>(next!=mapKey.end()) +00071 { +00072 <font class="keywordtype">float</font> e0= it->second.EaseFrom; +00073 <font class="keywordtype">float</font> e1= next->second.EaseTo; +00074 <font class="keywordtype">float</font> s = e0 + e1; +00075 +00076 <font class="comment">// "normalize".</font> +00077 <font class="keywordflow">if</font> (s > 1.0f) +00078 { +00079 e0 = e0/s; +00080 e1 = e1/s; +00081 } +00082 +00083 <font class="comment">// precalc ease factors.</font> +00084 key.Ease0= e0; +00085 key.Ease1= e1; +00086 key.EaseK= 1/(2.0f - e0 - e1); +00087 <font class="keywordflow">if</font>(e0) +00088 key.EaseKOverEase0= key.EaseK / e0; +00089 <font class="keywordflow">if</font>(e1) +00090 key.EaseKOverEase1= key.EaseK / e1; +00091 } +00092 <font class="keywordflow">else</font> +00093 { +00094 <font class="comment">// force ease() to just return d (see ease()).</font> +00095 key.EaseK = 0.5f; +00096 } +00097 +00098 } +00099 } +00100 +00101 <font class="comment">// ease time.</font> +<a name="l00102"></a><a class="code" href="class_CTCBTools.html#b1">00102</a> <font class="keywordtype">float</font> <a class="code" href="class_CTCBTools.html#b1">ease</a>(<font class="keyword">const</font> CKeyT *key, <font class="keywordtype">float</font> d)<font class="keyword"> +</font>00103 <font class="keyword"> </font>{ +00104 <font class="keywordflow">if</font> (d==0.0f || d==1.0f) <font class="keywordflow">return</font> d; +00105 <font class="comment">// k==0.5f <=> e0+e1 == 0.</font> +00106 <font class="keywordflow">if</font> (key->EaseK == 0.5f) <font class="keywordflow">return</font> d; +00107 +00108 <font class="keywordflow">if</font> (d < key->Ease0) +00109 <font class="keywordflow">return</font> key->EaseKOverEase0 * d*d; +00110 <font class="keywordflow">else</font> <font class="keywordflow">if</font> (d < 1.0f - key->Ease1) +00111 <font class="keywordflow">return</font> key->EaseK * (2.0f*d - key->Ease0); +00112 <font class="keywordflow">else</font> +00113 { +00114 d = 1.0f - d; +00115 <font class="keywordflow">return</font> 1.0f - key->EaseKOverEase1 * d*d; +00116 } +00117 } +00118 +00119 <font class="comment">// compute hermite factors.</font> +<a name="l00120"></a><a class="code" href="class_CTCBTools.html#b2">00120</a> <font class="keywordtype">void</font> <a class="code" href="class_CTCBTools.html#b2">computeHermiteBasis</a>(<font class="keywordtype">float</font> d, <font class="keywordtype">float</font> hb[4])<font class="keyword"> +</font>00121 <font class="keyword"> </font>{ +00122 <font class="keywordtype">float</font> d2,d3,a; +00123 +00124 d2 = d*d; +00125 d3 = d2*d; +00126 a = 3.0f*d2 - 2.0f*d3; +00127 hb[0] = 1.0f - a; +00128 hb[1] = a; +00129 hb[2] = d3 - 2.0f*d2 + d; +00130 hb[3] = d3 - d2; +00131 } +00132 +00133 +00134 <font class="comment">// compute TCB tangents factors.</font> +<a name="l00135"></a><a class="code" href="class_CTCBTools.html#b3">00135</a> <font class="keywordtype">void</font> <a class="code" href="class_CTCBTools.html#b3">computeTCBFactors</a>(<font class="keyword">const</font> CKeyT &key, <font class="keywordtype">float</font> timeBefore, <font class="keywordtype">float</font> time, <font class="keywordtype">float</font> timeAfter, +00136 <font class="keywordtype">float</font> rangeDelta, <font class="keywordtype">bool</font> firstKey, <font class="keywordtype">bool</font> endKey, <font class="keywordtype">bool</font> isLoop, <font class="keywordtype">float</font> &ksm, <font class="keywordtype">float</font> &ksp, <font class="keywordtype">float</font> &kdm, <font class="keywordtype">float</font> &kdp)<font class="keyword"> +</font>00137 <font class="keyword"> </font>{ +00138 <font class="keywordtype">float</font> fp,fn; +00139 +00140 <font class="keywordflow">if</font>(isLoop || (!firstKey && !endKey)) +00141 { +00142 <font class="keywordtype">float</font> dtm; +00143 <font class="comment">// Compute Time deltas.</font> +00144 <font class="keywordflow">if</font> (firstKey) +00145 { +00146 dtm = 0.5f * (rangeDelta + timeAfter - time); +00147 fp = rangeDelta / dtm; +00148 fn = (timeAfter - time) / dtm; +00149 } +00150 <font class="keywordflow">else</font> <font class="keywordflow">if</font> (endKey) +00151 { +00152 dtm = 0.5f * (rangeDelta + time - timeBefore); +00153 fp = rangeDelta / dtm; +00154 fn = (time - timeBefore) / dtm; +00155 } +00156 <font class="keywordflow">else</font> +00157 { +00158 dtm = 0.5f * (timeAfter - timeBefore); +00159 fp = (time - timeBefore) / dtm; +00160 fn = (timeAfter - time) / dtm; +00161 } +00162 <font class="keywordtype">float</font> c= (<font class="keywordtype">float</font>)fabs( key.Continuity ); +00163 fp = fp + c - c * fp; +00164 fn = fn + c - c * fn; +00165 } +00166 <font class="keywordflow">else</font> +00167 { +00168 <font class="comment">// firstkey and lastkey of not loop track.</font> +00169 fp = 1.0f; +00170 fn = 1.0f; +00171 } +00172 +00173 <font class="comment">// Compute tangents factors.</font> +00174 <font class="keywordtype">float</font> tm,cm,cp,bm,bp,tmcm,tmcp; +00175 +00176 cm = 1.0f - key.Continuity; +00177 tm = 0.5f * ( 1.0f - key.Tension ); +00178 cp = 2.0f - cm; +00179 bm = 1.0f - key.Bias; +00180 bp = 2.0f - bm; +00181 tmcm = tm*cm; tmcp = tm*cp; +00182 +00183 <font class="comment">// tgts factors.</font> +00184 ksm = tmcm*bp*fp; ksp = tmcp*bm*fp; +00185 kdm = tmcp*bp*fn; kdp = tmcm*bm*fn; +00186 +00187 } +00188 +00189 }; +00190 +00191 +00192 <font class="comment">// *************************************************************************** +</font>00200 <font class="comment"></font>template<class CKeyT, class T> +<a name="l00201"></a><a class="code" href="class_CTrackKeyFramerTCB.html">00201</a> <font class="keyword">class </font><a class="code" href="class_CTrackKeyFramerTCB.html">CTrackKeyFramerTCB</a> : <font class="keyword">public</font> <a class="code" href="class_ITrackKeyFramer.html">ITrackKeyFramer</a><CKeyT>, <font class="keyword">private</font> <a class="code" href="class_CTCBTools.html">CTCBTools</a><CKeyT, T, std::map<CAnimationTime, CKeyT> > +00202 { +00203 <font class="keyword">public</font>: +00204 +<a name="l00206"></a><a class="code" href="class_CTrackKeyFramerTCB.html#a0">00206</a> <font class="keyword">virtual</font> <font class="keyword">const</font> IAnimatedValue& <a class="code" href="class_CTrackKeyFramerTCB.html#a0">getValue</a> ()<font class="keyword"> const +</font>00207 <font class="keyword"> </font>{ +00208 <font class="keywordflow">return</font> _Value; +00209 } +00210 +00211 <font class="keyword">protected</font>: +00212 +00213 +<a name="l00214"></a><a class="code" href="class_CTrackKeyFramerTCB.html#t0">00214</a> <font class="keyword">typedef</font> <font class="keyword">typename</font> CKeyT::TValueType TKeyValueType; +00215 +00216 +00217 +00219 <font class="comment">// @{</font> +00220 +<a name="l00222"></a><a class="code" href="class_CTrackKeyFramerTCB.html#b0">00222</a> <font class="keyword">virtual</font> <font class="keywordtype">void</font> <a class="code" href="class_CTrackKeyFramerTCB.html#b0">evalKey</a> ( <font class="keyword">const</font> CKeyT* previous, <font class="keyword">const</font> CKeyT* next, +00223 CAnimationTime datePrevious, CAnimationTime dateNext, +00224 CAnimationTime date )<font class="keyword"> +</font>00225 <font class="keyword"> </font>{ +00226 <font class="keywordflow">if</font>(previous && next) +00227 { +00228 <font class="comment">// lerp from previous to cur.</font> +00229 date-= datePrevious; +00230 date*= previous->OODeltaTime; +00231 <a class="code" href="namespace_NLMISC.html#a177">NLMISC::clamp</a>(date, 0,1); +00232 +00233 date = <a class="code" href="class_CTCBTools.html#b1">ease</a>(previous, date); +00234 +00235 <font class="keywordtype">float</font> hb[4]; +00236 <a class="code" href="class_CTCBTools.html#b2">computeHermiteBasis</a>(date, hb); +00237 copyToValue(_Value.Value, +00238 previous->Value*hb[0] + next->Value*hb[1] + +00239 previous->TanFrom*hb[2] + next->TanTo*hb[3]); +00240 } +00241 <font class="keywordflow">else</font> +00242 { +00243 <font class="keywordflow">if</font> (previous) +00244 copyToValue(_Value.Value, previous->Value); +00245 <font class="keywordflow">else</font> +00246 <font class="keywordflow">if</font> (next) +00247 copyToValue(_Value.Value, next->Value); +00248 } +00249 } +00250 +<a name="l00252"></a><a class="code" href="class_CTrackKeyFramerTCB.html#b1">00252</a> <font class="keyword">virtual</font> <font class="keywordtype">void</font> <a class="code" href="class_CTrackKeyFramerTCB.html#b1">compile</a>()<font class="keyword"> +</font>00253 <font class="keyword"> </font>{ +00254 ITrackKeyFramer<CKeyT>::compile(); +00255 +00256 <font class="comment">// Ease Precompute.</font> +00257 <a class="code" href="class_CTCBTools.html#b0">compileTCBEase</a>(_MapKey, getLoopMode()); +00258 +00259 +00260 <font class="comment">// Tangents Precompute.</font> +00261 sint nKeys= _MapKey.size(); +00262 <font class="keywordflow">if</font>(nKeys<=1) +00263 <font class="keywordflow">return</font>; +00264 +00265 TMapTimeCKey::iterator it= _MapKey.begin(); <font class="comment">// first key.</font> +00266 TMapTimeCKey::iterator itNext= it; itNext++; <font class="comment">// second key.</font> +00267 TMapTimeCKey::iterator itPrev= _MapKey.end(); itPrev--; <font class="comment">// last key.</font> +00268 +00269 <font class="keywordflow">if</font>(nKeys==2 && !getLoopMode()) +00270 { +00271 <a class="code" href="class_CTrackKeyFramerTCB.html#c1">computeTCBKeyLinear</a>( it->second, itNext->second ); +00272 } +00273 <font class="keywordflow">else</font> +00274 { +00275 <font class="comment">// rangeDelta is the length of effective Range - length of LastKey-FirstKey.</font> +00276 <font class="comment">// NB: if RangeLock, rangeDelta==0.</font> +00277 <font class="keywordtype">float</font> rangeDelta; +00278 <font class="comment">// NB: _RangeDelta has just been compiled in ITrackKeyFramer<CKeyT>::compile().</font> +00279 rangeDelta= getCompiledRangeDelta(); +00280 +00281 <font class="comment">// Compute all middle keys.</font> +00282 <font class="keywordflow">for</font>(;it!=_MapKey.end();) +00283 { +00284 <font class="comment">// Do the first key and the last key only in LoopMode.</font> +00285 <font class="comment">// NB: we are the last if itNext==_MapKey.begin().</font> +00286 <font class="keywordflow">if</font>(getLoopMode() || (it!=_MapKey.begin() && itNext!=_MapKey.begin()) ) +00287 { +00288 <a class="code" href="class_CTrackKeyFramerTCB.html#c0">computeTCBKey</a>(itPrev->second, it->second, itNext->second, +00289 itPrev->first, it->first, itNext->first, rangeDelta, +00290 it==_MapKey.begin(), itNext==_MapKey.begin(), getLoopMode()); +00291 } +00292 +00293 <font class="comment">// Next key!!</font> +00294 itPrev= it; +00295 it++; +00296 itNext++; +00297 <font class="comment">// loop.</font> +00298 <font class="keywordflow">if</font>(itNext==_MapKey.end()) +00299 itNext= _MapKey.begin(); +00300 } +00301 +00302 <font class="comment">// In not loop mode, compute first and last key, AFTER middle keys computed.</font> +00303 <font class="keywordflow">if</font>(!getLoopMode()) +00304 { +00305 TMapTimeCKey::iterator it0= _MapKey.begin(); <font class="comment">// first key.</font> +00306 TMapTimeCKey::iterator it1= it0; it1++; <font class="comment">// second key.</font> +00307 TMapTimeCKey::iterator itLast= _MapKey.end();itLast--; <font class="comment">// last key.</font> +00308 TMapTimeCKey::iterator itLastPrev= itLast;itLastPrev--; <font class="comment">// prev of last key.</font> +00309 +00310 <a class="code" href="class_CTrackKeyFramerTCB.html#c2">computeFirstKey</a>(it0->second, it1->second); +00311 <a class="code" href="class_CTrackKeyFramerTCB.html#c3">computeLastKey</a>(itLast->second, itLastPrev->second); +00312 } +00313 } +00314 } +00315 +00316 <font class="comment">// @}</font> +00317 +00318 +00319 <font class="comment">// *****************</font> +00320 <font class="keyword">private</font>: +<a name="l00321"></a><a class="code" href="class_CTrackKeyFramerTCB.html#o0">00321</a> CAnimatedValueBlendable<T> _Value; +00322 +00323 +00324 +<a name="l00325"></a><a class="code" href="class_CTrackKeyFramerTCB.html#c0">00325</a> <font class="keywordtype">void</font> <a class="code" href="class_CTrackKeyFramerTCB.html#c0">computeTCBKey</a>(CKeyT &keyBefore, CKeyT &key, CKeyT &keyAfter, <font class="keywordtype">float</font> timeBefore, <font class="keywordtype">float</font> time, <font class="keywordtype">float</font> timeAfter, +00326 <font class="keywordtype">float</font> rangeDelta, <font class="keywordtype">bool</font> firstKey, <font class="keywordtype">bool</font> endKey, <font class="keywordtype">bool</font> isLoop)<font class="keyword"> +</font>00327 <font class="keyword"> </font>{ +00328 <font class="keywordtype">float</font> ksm,ksp,kdm,kdp; +00329 +00330 <font class="comment">// compute tangents factors.</font> +00331 <a class="code" href="class_CTCBTools.html#b3">computeTCBFactors</a>(key, timeBefore, time, timeAfter, rangeDelta, firstKey, endKey, isLoop, ksm,ksp,kdm,kdp); +00332 +00333 <font class="comment">// Delta.</font> +00334 TKeyValueType delm, delp; +00335 delm = key.Value - keyBefore.Value; +00336 delp = keyAfter.Value - key.Value; +00337 +00338 <font class="comment">// Tangents.</font> +00339 key.TanTo = delm*ksm + delp*ksp; +00340 key.TanFrom= delm*kdm + delp*kdp; +00341 +00342 } +00343 +00344 <font class="comment">// compute 2 TCB keys for a not-loop track => "linear".</font> +<a name="l00345"></a><a class="code" href="class_CTrackKeyFramerTCB.html#c1">00345</a> <font class="keywordtype">void</font> <a class="code" href="class_CTrackKeyFramerTCB.html#c1">computeTCBKeyLinear</a>(CKeyT &key0, CKeyT &key1)<font class="keyword"> +</font>00346 <font class="keyword"> </font>{ +00347 <font class="keywordtype">float</font> f0, f1; +00348 TKeyValueType dv; +00349 +00350 f0 = 1.0f - key0.Tension; +00351 f1 = 1.0f - key1.Tension; +00352 dv = key1.Value - key0.Value; +00353 key0.TanFrom= dv * f0; +00354 key1.TanTo= dv * f1; +00355 } +00356 +00357 <font class="comment">// compute this AFTER computing key1.</font> +<a name="l00358"></a><a class="code" href="class_CTrackKeyFramerTCB.html#c2">00358</a> <font class="keywordtype">void</font> <a class="code" href="class_CTrackKeyFramerTCB.html#c2">computeFirstKey</a>(CKeyT &keyFirst, CKeyT &keyAfter)<font class="keyword"> +</font>00359 <font class="keyword"> </font>{ +00360 <font class="keywordtype">float</font> tm; +00361 tm = 0.5f * (1.0f - keyFirst.Tension); +00362 keyFirst.TanFrom= tm * ((keyAfter.Value - keyFirst.Value) * 3.0f - keyAfter.TanTo); +00363 } +00364 +00365 <font class="comment">// compute this AFTER computing key(n-2).</font> +<a name="l00366"></a><a class="code" href="class_CTrackKeyFramerTCB.html#c3">00366</a> <font class="keywordtype">void</font> <a class="code" href="class_CTrackKeyFramerTCB.html#c3">computeLastKey</a>(CKeyT &keyLast, CKeyT &keyBefore)<font class="keyword"> +</font>00367 <font class="keyword"> </font>{ +00368 <font class="keywordtype">float</font> tm; +00369 tm = 0.5f * (1.0f - keyLast.Tension); +00370 keyLast.TanTo= tm * ((keyLast.Value - keyBefore.Value) * 3.0f - keyBefore.TanFrom); +00371 } +00372 +00373 +00374 }; +00375 +00376 +00377 <font class="comment">// *************************************************************************** +</font><a name="l00385"></a><a class="code" href="class_CTrackKeyFramerTCB_ltCKeyTCBQuat_x_NLMISC__CAngleAxis_gt.html">00385</a> <font class="comment"></font><font class="keyword">class </font><a class="code" href="class_CTrackKeyFramerTCB.html">CTrackKeyFramerTCB</a><CKeyTCBQuat, NLMISC::CAngleAxis> : <font class="keyword">public</font> <a class="code" href="class_ITrackKeyFramer.html">ITrackKeyFramer</a><CKeyTCBQuat>, +00386 <font class="keyword">private</font> <a class="code" href="class_CTCBTools.html">CTCBTools</a><CKeyTCBQuat, NLMISC::CAngleAxis, std::map<CAnimationTime, CKeyTCBQuat> > +00387 { +00388 <font class="keyword">public</font>: +00389 +<a name="l00391"></a><a class="code" href="class_CTrackKeyFramerTCB_ltCKeyTCBQuat_x_NLMISC__CAngleAxis_gt.html#a0">00391</a> <font class="keyword">virtual</font> <font class="keyword">const</font> IAnimatedValue& getValue ()<font class="keyword"> const +</font>00392 <font class="keyword"> </font>{ +00393 <font class="keywordflow">return</font> _Value; +00394 } +00395 +00397 <font class="comment">// @{</font> +00398 +<a name="l00400"></a><a class="code" href="class_CTrackKeyFramerTCB_ltCKeyTCBQuat_x_NLMISC__CAngleAxis_gt.html#a1">00400</a> <font class="keyword">virtual</font> <font class="keywordtype">void</font> evalKey ( <font class="keyword">const</font> CKeyTCBQuat* previous, <font class="keyword">const</font> CKeyTCBQuat* next, +00401 CAnimationTime datePrevious, CAnimationTime dateNext, +00402 CAnimationTime date )<font class="keyword"> +</font>00403 <font class="keyword"> </font>{ +00404 <font class="keywordflow">if</font>(previous && next) +00405 { +00406 <font class="comment">// lerp from previous to cur.</font> +00407 date-= datePrevious; +00408 date*= previous->OODeltaTime; +00409 <a class="code" href="namespace_NLMISC.html#a177">NLMISC::clamp</a>(date, 0,1); +00410 +00411 <font class="comment">// ease.</font> +00412 date = <a class="code" href="class_CTCBTools.html#b1">ease</a>(previous, date); +00413 +00414 <font class="comment">// quad slerp.</font> +00415 _Value.Value= CQuat::squadrev(next->LocalAngleAxis, previous->Quat, previous->A, next->B, next->Quat, date); +00416 } +00417 <font class="keywordflow">else</font> +00418 { +00419 <font class="keywordflow">if</font> (previous) +00420 _Value.Value= previous->Quat; +00421 <font class="keywordflow">else</font> +00422 <font class="keywordflow">if</font> (next) +00423 _Value.Value= next->Quat; +00424 } +00425 +00426 } +00427 +<a name="l00429"></a><a class="code" href="class_CTrackKeyFramerTCB_ltCKeyTCBQuat_x_NLMISC__CAngleAxis_gt.html#a2">00429</a> <font class="keyword">virtual</font> <font class="keywordtype">void</font> compile()<font class="keyword"> +</font>00430 <font class="keyword"> </font>{ +00431 ITrackKeyFramer<CKeyTCBQuat>::compile(); +00432 +00433 <font class="comment">// Ease Precompute.</font> +00434 <a class="code" href="class_CTCBTools.html#b0">compileTCBEase</a>(_MapKey, getLoopMode()); +00435 +00436 TMapTimeCKey::iterator it; +00437 TMapTimeCKey::iterator itNext; +00438 TMapTimeCKey::iterator itPrev; +00439 +00440 <font class="comment">// Compute absolute quaternions.</font> +00441 <font class="keywordflow">for</font> (it= _MapKey.begin();it!=_MapKey.end();) +00442 { +00443 CKeyTCBQuat &key= it->second; +00444 +00445 <font class="comment">// Compute Local AngleAxis.</font> +00446 <font class="keywordflow">if</font>(it!= _MapKey.begin()) +00447 { +00448 <a class="code" href="class_NLMISC__CMatrix.html">NLMISC::CMatrix</a> mat; +00449 mat.<a class="code" href="class_NLMISC__CMatrix.html#a4">setRot</a>(itPrev->second.Quat); +00450 mat.<a class="code" href="class_NLMISC__CMatrix.html#a38">invert</a>(); +00451 key.LocalAngleAxis.Axis= mat*key.Value.Axis; +00452 key.LocalAngleAxis.Angle= key.Value.Angle; +00453 } +00454 <font class="keywordflow">else</font> +00455 key.LocalAngleAxis= key.Value; +00456 +00457 +00458 key.LocalAngleAxis.Axis.normalize(); +00459 <font class="comment">// make angle positive.</font> +00460 <font class="keywordflow">if</font>(key.LocalAngleAxis.Angle<0.f) +00461 { +00462 key.LocalAngleAxis.Axis= -key.LocalAngleAxis.Axis; +00463 key.LocalAngleAxis.Angle= -key.LocalAngleAxis.Angle; +00464 } +00465 +00466 <font class="comment">// relative quat</font> +00467 key.Quat.setAngleAxis(key.LocalAngleAxis); +00468 +00469 <font class="comment">// absolute quat</font> +00470 <font class="keywordflow">if</font> (it!= _MapKey.begin()) +00471 key.Quat = itPrev->second.Quat * key.Quat; +00472 +00473 <font class="comment">// next key.</font> +00474 itPrev= it; +00475 it++; +00476 } +00477 +00478 <font class="comment">// Tangents Precompute.</font> +00479 sint nKeys= _MapKey.size(); +00480 <font class="keywordflow">if</font>(nKeys<=1) +00481 <font class="keywordflow">return</font>; +00482 +00483 <font class="comment">// rangeDelta is the length of effective Range - length of LastKey-FirstKey.</font> +00484 <font class="comment">// NB: if RangeLock, rangeDelta==0.</font> +00485 <font class="keywordtype">float</font> rangeDelta; +00486 <font class="comment">// NB: _RangeDelta has just been compiled in ITrackKeyFramer<CKeyTCBQuat>::compile().</font> +00487 rangeDelta= getCompiledRangeDelta(); +00488 +00489 it= _MapKey.begin(); <font class="comment">// first key.</font> +00490 itNext= it; itNext++; <font class="comment">// second key.</font> +00491 itPrev= _MapKey.end(); itPrev--; <font class="comment">// last key.</font> +00492 +00493 <font class="comment">// Compute all keys.</font> +00494 <font class="keywordflow">for</font>(;it!=_MapKey.end();) +00495 { +00496 <font class="comment">// NB: we are the last key if itNext==_MapKey.begin().</font> +00497 computeTCBKey(itPrev->second, it->second, itNext->second, +00498 itPrev->first, it->first, itNext->first, rangeDelta, it==_MapKey.begin(), itNext==_MapKey.begin(), getLoopMode()); +00499 +00500 <font class="comment">// Next key!!</font> +00501 itPrev= it; +00502 it++; +00503 itNext++; +00504 <font class="comment">// loop.</font> +00505 <font class="keywordflow">if</font>(itNext==_MapKey.end()) +00506 itNext= _MapKey.begin(); +00507 } +00508 +00509 } +00510 +00511 <font class="comment">// @}</font> +00512 +00513 +00514 <font class="comment">// *****************</font> +00515 <font class="keyword">private</font>: +<a name="l00516"></a><a class="code" href="class_CTrackKeyFramerTCB_ltCKeyTCBQuat_x_NLMISC__CAngleAxis_gt.html#o0">00516</a> CAnimatedValueBlendable<CQuat> _Value; +00517 +00518 +<a name="l00519"></a><a class="code" href="class_CTrackKeyFramerTCB_ltCKeyTCBQuat_x_NLMISC__CAngleAxis_gt.html#c0">00519</a> <font class="keywordtype">void</font> computeTCBKey(CKeyTCBQuat &keyBefore, CKeyTCBQuat &key, CKeyTCBQuat &keyAfter, <font class="keywordtype">float</font> timeBefore, <font class="keywordtype">float</font> time, <font class="keywordtype">float</font> timeAfter, +00520 <font class="keywordtype">float</font> rangeDelta, <font class="keywordtype">bool</font> firstKey, <font class="keywordtype">bool</font> endKey, <font class="keywordtype">bool</font> isLoop)<font class="keyword"> +</font>00521 <font class="keyword"> </font>{ +00522 CQuat qp, qm; +00523 +00524 <font class="comment">// compute qm.</font> +00525 <font class="keywordflow">if</font> (!firstKey || isLoop) +00526 { +00527 <font class="keywordtype">float</font> angle= key.LocalAngleAxis.Angle; +00528 CVector &axis= key.LocalAngleAxis.Axis; +00529 +00530 <font class="keywordflow">if</font> (angle > 2*NLMISC::Pi- NLMISC::QuatEpsilon) +00531 { +00532 qm.set(axis.x, axis.y, axis.z, 0.0f); +00533 qm = qm.log(); +00534 } +00535 <font class="keywordflow">else</font> +00536 { +00537 CQuat qprev= keyBefore.Quat; +00538 qprev.makeClosest(key.Quat); +00539 qm = CQuat::lnDif(qprev, key.Quat); +00540 } +00541 } +00542 +00543 <font class="comment">// compute qp.</font> +00544 <font class="keywordflow">if</font> (!endKey || isLoop) +00545 { +00546 <font class="keywordtype">float</font> angle= keyAfter.LocalAngleAxis.Angle; +00547 CVector &axis= keyAfter.LocalAngleAxis.Axis; +00548 +00549 <font class="keywordflow">if</font> (angle > 2*NLMISC::Pi- NLMISC::QuatEpsilon) +00550 { +00551 qp.set(axis.x, axis.y, axis.z, 0.0f); +00552 qp = qp.log(); +00553 } +00554 <font class="keywordflow">else</font> +00555 { +00556 CQuat qnext= keyAfter.Quat; +00557 qnext.makeClosest(key.Quat); +00558 qp = CQuat::lnDif(key.Quat, qnext); +00559 } +00560 } +00561 +00562 <font class="comment">// not loop mgt.</font> +00563 <font class="keywordflow">if</font> (firstKey && !isLoop) +00564 qm = qp; +00565 <font class="keywordflow">if</font> (endKey && !isLoop) +00566 qp = qm; +00567 +00568 +00569 <font class="comment">// compute tangents factors.</font> +00570 <font class="keywordtype">float</font> ksm, ksp, kdm, kdp; +00571 <a class="code" href="class_CTCBTools.html#b3">computeTCBFactors</a>(key, timeBefore, time, timeAfter, rangeDelta, firstKey, endKey, isLoop, ksm,ksp,kdm,kdp); +00572 +00573 +00574 <font class="comment">// A/B.</font> +00575 CQuat qa, qb; +00576 qb= (qm * (1.0f-ksm) + qp * (-ksp) ) * 0.5f; +00577 qa= (qm * kdm + qp * (kdp-1.0f) ) * 0.5f; +00578 qa = qa.exp(); +00579 qb = qb.exp(); +00580 +00581 key.A = key.Quat * qa; +00582 key.B = key.Quat * qb; +00583 } +00584 +00585 +00586 +00587 }; +00588 +00589 +</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> |