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<hr><h1>animation_optimizer.cpp</h1><a href="animation__optimizer_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001
00007 <font class="comment">/* Copyright, 2000-2002 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 <font class="preprocessor">#include "<a class="code" href="std3d_8h.html">std3d.h</a>"</font>
00027
00028 <font class="preprocessor">#include "<a class="code" href="animation__optimizer_8h.html">3d/animation_optimizer.h</a>"</font>
00029 <font class="preprocessor">#include "<a class="code" href="mem__stream_8h.html">nel/misc/mem_stream.h</a>"</font>
00030 <font class="preprocessor">#include "<a class="code" href="vectord_8h.html">nel/misc/vectord.h</a>"</font>
00031 <font class="preprocessor">#include "<a class="code" href="track_8h.html">3d/track.h</a>"</font>
00032 <font class="preprocessor">#include "<a class="code" href="track__keyframer_8h.html">3d/track_keyframer.h</a>"</font>
00033 <font class="preprocessor">#include "<a class="code" href="animation_8h.html">3d/animation.h</a>"</font>
00034 <font class="preprocessor">#include "<a class="code" href="track__sampled__quat_8h.html">3d/track_sampled_quat.h</a>"</font>
00035 <font class="preprocessor">#include "<a class="code" href="track__sampled__vector_8h.html">3d/track_sampled_vector.h</a>"</font>
00036
00037
00038 <font class="keyword">using</font> <font class="keyword">namespace </font>NLMISC;
00039 <font class="keyword">using</font> <font class="keyword">namespace </font>std;
00040
00041
00042 <font class="keyword">namespace </font>NL3D
00043 {
00044
00045
00046 <font class="comment">// ***************************************************************************</font>
<a name="l00047"></a><a class="code" href="classNL3D_1_1CAnimationOptimizer.html#a0">00047</a> CAnimationOptimizer::CAnimationOptimizer()
00048 {
00049 <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o0">_SampleFrameRate</a>= 30;
00050 <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o1">_QuaternionThresholdLowPrec</a>= 1.0 - 0.0001;
00051 <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o2">_QuaternionThresholdHighPrec</a>= 1.0 - 0.000001;
00052 <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o4">_VectorThresholdLowPrec</a>= 0.001;
00053 <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o5">_VectorThresholdHighPrec</a>= 0.0001;
00054 }
00055
00056
00057 <font class="comment">// ***************************************************************************</font>
<a name="l00058"></a><a class="code" href="classNL3D_1_1CAnimationOptimizer.html#a1">00058</a> <font class="keywordtype">void</font> CAnimationOptimizer::setQuaternionThreshold(<font class="keywordtype">double</font> lowPrecThre, <font class="keywordtype">double</font> highPrecThre)
00059 {
00060 <a class="code" href="debug_8h.html#a6">nlassert</a>(lowPrecThre>=0);
00061 <a class="code" href="debug_8h.html#a6">nlassert</a>(highPrecThre>=0);
00062 <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o1">_QuaternionThresholdLowPrec</a>= 1.0 - lowPrecThre;
00063 <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o2">_QuaternionThresholdHighPrec</a>= 1.0 - highPrecThre;
00064 }
00065
00066
00067 <font class="comment">// ***************************************************************************</font>
<a name="l00068"></a><a class="code" href="classNL3D_1_1CAnimationOptimizer.html#a2">00068</a> <font class="keywordtype">void</font> CAnimationOptimizer::setVectorThreshold(<font class="keywordtype">double</font> lowPrecThre, <font class="keywordtype">double</font> highPrecThre)
00069 {
00070 <a class="code" href="debug_8h.html#a6">nlassert</a>(lowPrecThre>=0);
00071 <a class="code" href="debug_8h.html#a6">nlassert</a>(highPrecThre>=0);
00072 <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o4">_VectorThresholdLowPrec</a>= lowPrecThre;
00073 <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o5">_VectorThresholdHighPrec</a>= highPrecThre;
00074 }
00075
00076
00077 <font class="comment">// ***************************************************************************</font>
<a name="l00078"></a><a class="code" href="classNL3D_1_1CAnimationOptimizer.html#a5">00078</a> <font class="keywordtype">void</font> CAnimationOptimizer::setSampleFrameRate(<font class="keywordtype">float</font> frameRate)
00079 {
00080 <a class="code" href="debug_8h.html#a6">nlassert</a>(frameRate>0);
00081 <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o0">_SampleFrameRate</a>= frameRate;
00082 }
00083
00084
00085 <font class="comment">// ***************************************************************************</font>
<a name="l00086"></a><a class="code" href="classNL3D_1_1CAnimationOptimizer.html#a6">00086</a> <font class="keywordtype">void</font> CAnimationOptimizer::optimize(<font class="keyword">const</font> CAnimation &animIn, CAnimation &animOut)
00087 {
00088 <font class="comment">// reset animOut</font>
00089 <a class="code" href="namespaceNLMISC.html#a222">contReset</a>(animOut);
00090
00091 <font class="comment">// Parse all tracks of the animation.</font>
00092 set<string> setString;
00093 animIn.getTrackNames (setString);
00094 set<string>::iterator it;
00095
00096 <font class="keywordflow">for</font>(it=setString.begin();it!=setString.end();it++)
00097 {
00098 <font class="keyword">const</font> string &trackName= *it;
00099 uint trackId= animIn.getIdTrackByName(trackName);
00100 <a class="code" href="debug_8h.html#a6">nlassert</a>(trackId!=CAnimation::NotFound);
00101 <font class="keyword">const</font> ITrack *track= animIn.getTrack(trackId);
00102
00103 <font class="comment">// If the track is optimisable.</font>
00104 ITrack *newTrack;
00105 <font class="keywordflow">if</font>(<a class="code" href="classNL3D_1_1CAnimationOptimizer.html#c1">isTrackOptimisable</a>(track))
00106 {
00107 <font class="comment">// choose the threshold according to precision wanted</font>
00108 <font class="keywordflow">if</font>( <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#c3">isLowPrecisionTrack</a>(trackName) )
00109 {
00110 <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o3">_QuaternionThreshold</a>= <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o1">_QuaternionThresholdLowPrec</a>;
00111 <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o6">_VectorThreshold</a>= <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o4">_VectorThresholdLowPrec</a>;
00112 }
00113 <font class="keywordflow">else</font>
00114 {
00115 <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o3">_QuaternionThreshold</a>= <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o2">_QuaternionThresholdHighPrec</a>;
00116 <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o6">_VectorThreshold</a>= <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o5">_VectorThresholdHighPrec</a>;
00117 }
00118
00119 <font class="comment">// optimize it.</font>
00120 newTrack= <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#c2">optimizeTrack</a>(track);
00121 }
00122 <font class="keywordflow">else</font>
00123 {
00124 <font class="comment">// just clone it.</font>
00125 newTrack= <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#c0">cloneTrack</a>(track);
00126 }
00127
00128 <font class="comment">// Add it to the animation</font>
00129 animOut.addTrack(trackName, newTrack);
00130 }
00131
00132 <font class="comment">// Set min animation length</font>
00133 animOut.setMinEndTime (animIn.getEndTime ());
00134 <a class="code" href="debug_8h.html#a6">nlassert</a> (animOut.getEndTime() == animIn.getEndTime());
00135 }
00136
00137 <font class="comment">// ***************************************************************************</font>
<a name="l00138"></a><a class="code" href="classNL3D_1_1CAnimationOptimizer.html#c0">00138</a> ITrack *CAnimationOptimizer::cloneTrack(<font class="keyword">const</font> ITrack *trackIn)
00139 {
00140 CMemStream memStream;
00141
00142 <font class="comment">// write to the stream.</font>
00143 ITrack *trackInSerial= const_cast<ITrack*>(trackIn);
00144 memStream.serialPolyPtr(trackInSerial);
00145
00146 <font class="comment">// read from the stream.</font>
00147 memStream.invert();
00148 ITrack *ret= NULL;
00149 memStream.serialPolyPtr(ret);
00150
00151 <font class="keywordflow">return</font> ret;
00152 }
00153
00154
00155 <font class="comment">// ***************************************************************************</font>
<a name="l00156"></a><a class="code" href="classNL3D_1_1CAnimationOptimizer.html#c1">00156</a> <font class="keywordtype">bool</font> CAnimationOptimizer::isTrackOptimisable(<font class="keyword">const</font> ITrack *trackIn)
00157 {
00158 <a class="code" href="debug_8h.html#a6">nlassert</a>(trackIn);
00159
00160 <font class="comment">// If the track is a Linear, Bezier or a TCB track, suppose we can optimize it. Constant may not be interressant....</font>
00161 <font class="keywordflow">if</font>( dynamic_cast<const CTrackKeyFramerTCBQuat*>(trackIn) ||
00162 dynamic_cast<const CTrackKeyFramerBezierQuat*>(trackIn) ||
00163 dynamic_cast<const CTrackKeyFramerLinearQuat*>(trackIn) )
00164 <font class="keywordflow">return</font> <font class="keyword">true</font>;
00165
00166 <font class="comment">// If the track is a Linear, Bezier or a TCB track, suppose we can optimize it. Constant may not be interressant....</font>
00167 <font class="keywordflow">if</font>( dynamic_cast<const CTrackKeyFramerTCBVector*>(trackIn) ||
00168 dynamic_cast<const CTrackKeyFramerBezierVector*>(trackIn) ||
00169 dynamic_cast<const CTrackKeyFramerLinearVector*>(trackIn) )
00170 <font class="keywordflow">return</font> <font class="keyword">true</font>;
00171
00172 <font class="keywordflow">return</font> <font class="keyword">false</font>;
00173 }
00174
00175
00176 <font class="comment">// ***************************************************************************</font>
<a name="l00177"></a><a class="code" href="classNL3D_1_1CAnimationOptimizer.html#c2">00177</a> ITrack *CAnimationOptimizer::optimizeTrack(<font class="keyword">const</font> ITrack *trackIn)
00178 {
00179 <font class="comment">// Get track param.</font>
00180 <font class="keywordtype">float</font> beginTime= trackIn->getBeginTime();
00181 <font class="keywordtype">float</font> endTime= trackIn->getEndTime();
00182 <a class="code" href="debug_8h.html#a6">nlassert</a>(endTime>=beginTime);
00183
00184 <font class="comment">// Get num Sample </font>
00185 uint numSamples= (uint)ceil( (endTime-beginTime)*<a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o0">_SampleFrameRate</a>);
00186 numSamples= max(1U, numSamples);
00187 <a class="code" href="debug_8h.html#a6">nlassert</a>(numSamples<65535);
00188
00189
00190 <font class="comment">// Optimize Quaternion track??</font>
00191 <font class="comment">//================</font>
00192 <font class="keywordflow">if</font>( dynamic_cast<const CAnimatedValueQuat *>(&trackIn->getValue()) )
00193 {
00194 <font class="comment">// sample the animation. Store result in _TimeList/_QuatKeyList</font>
00195 <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#z379_0">sampleQuatTrack</a>(trackIn, beginTime, endTime, numSamples);
00196
00197 <font class="comment">// check if the sampled track can be reduced to a TrackDefaultQuat. Test _QuatKeyList.</font>
00198 <font class="keywordflow">if</font>( <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#z379_1">testConstantQuatTrack</a>() )
00199 {
00200 <font class="comment">// create a default Track Quat.</font>
00201 CTrackDefaultQuat *trackDefault= <font class="keyword">new</font> CTrackDefaultQuat;
00202 <font class="comment">// setup the uniform value.</font>
00203 trackDefault->setValue(<a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o9">_QuatKeyList</a>[0]);
00204
00205 <font class="comment">// return the result.</font>
00206 <font class="keywordflow">return</font> trackDefault;
00207 }
00208 <font class="comment">// else optimize the sampled animation, and build.</font>
00209 <font class="keywordflow">else</font>
00210 {
00211 <font class="comment">// optimize.</font>
00212 <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#z379_2">optimizeQuatTrack</a>();
00213
00214 <font class="comment">// Create a sampled quaternion track</font>
00215 CTrackSampledQuat *trackSQ= <font class="keyword">new</font> CTrackSampledQuat;
00216
00217 <font class="comment">// Copy loop from track.</font>
00218 trackSQ->setLoopMode(trackIn->getLoopMode());
00219
00220 <font class="comment">// Build it.</font>
00221 trackSQ->build(<a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o8">_TimeList</a>, <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o9">_QuatKeyList</a>, beginTime, endTime);
00222
00223 <font class="comment">// return result.</font>
00224 <font class="keywordflow">return</font> trackSQ;
00225 }
00226 }
00227 <font class="comment">// Optimize Position track??</font>
00228 <font class="comment">//================</font>
00229 <font class="keywordflow">else</font> <font class="keywordflow">if</font>( dynamic_cast<const CAnimatedValueVector *>(&trackIn->getValue()) )
00230 {
00231 <font class="comment">// sample the animation. Store result in _TimeList/_VectorKeyList</font>
00232 <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#z380_0">sampleVectorTrack</a>(trackIn, beginTime, endTime, numSamples);
00233
00234 <font class="comment">// check if the sampled track can be reduced to a TrackDefaultVector. Test _VectorKeyList.</font>
00235 <font class="keywordflow">if</font>( <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#z380_1">testConstantVectorTrack</a>() )
00236 {
00237 <font class="comment">// create a default Track Vector.</font>
00238 CTrackDefaultVector *trackDefault= <font class="keyword">new</font> CTrackDefaultVector;
00239 <font class="comment">// setup the uniform value.</font>
00240 trackDefault->setValue(<a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o10">_VectorKeyList</a>[0]);
00241
00242 <font class="comment">// return the result.</font>
00243 <font class="keywordflow">return</font> trackDefault;
00244 }
00245 <font class="comment">// else optimize the sampled animation, and build.</font>
00246 <font class="keywordflow">else</font>
00247 {
00248 <font class="comment">// optimize.</font>
00249 <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#z380_2">optimizeVectorTrack</a>();
00250
00251 <font class="comment">// Create a sampled Vector track</font>
00252 CTrackSampledVector *trackSV= <font class="keyword">new</font> CTrackSampledVector;
00253
00254 <font class="comment">// Copy loop from track.</font>
00255 trackSV->setLoopMode(trackIn->getLoopMode());
00256
00257 <font class="comment">// Build it.</font>
00258 trackSV->build(<a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o8">_TimeList</a>, <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o10">_VectorKeyList</a>, beginTime, endTime);
00259
00260 <font class="comment">// return result.</font>
00261 <font class="keywordflow">return</font> trackSV;
00262 }
00263 }
00264 <font class="keywordflow">else</font>
00265 {
00266 <font class="comment">// Must be a quaternion track or vector track for now.</font>
00267 <a class="code" href="debug_8h.html#a12">nlstop</a>;
00268 <font class="comment">// Avoid warning.</font>
00269 <font class="keywordflow">return</font> <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#c0">cloneTrack</a>(trackIn);
00270 }
00271 }
00272
00273
00274 <font class="comment">// ***************************************************************************</font>
00275 <font class="comment">// ***************************************************************************</font>
00276 <font class="comment">// Quaternion optimisation</font>
00277 <font class="comment">// ***************************************************************************</font>
00278 <font class="comment">// ***************************************************************************</font>
00279
00280
00281 <font class="comment">// ***************************************************************************</font>
<a name="l00282"></a><a class="code" href="classNL3D_1_1CAnimationOptimizer.html#z379_0">00282</a> <font class="keywordtype">void</font> CAnimationOptimizer::sampleQuatTrack(<font class="keyword">const</font> ITrack *trackIn, <font class="keywordtype">float</font> beginTime, <font class="keywordtype">float</font> endTime, uint numSamples)
00283 {
00284 <font class="comment">// resize tmp samples</font>
00285 <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o8">_TimeList</a>.resize(numSamples);
00286 <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o9">_QuatKeyList</a>.resize(numSamples);
00287
00288 <font class="comment">// Sample the animation.</font>
00289 <font class="keywordtype">float</font> <a class="code" href="driver__opengl__extension__def_8h.html#a384">t</a>= beginTime;
00290 <font class="keywordtype">float</font> dt= 0;
00291 <font class="keywordflow">if</font>(numSamples>1)
00292 dt= (endTime-beginTime)/(numSamples-1);
00293 <font class="keywordflow">for</font>(uint i=0;i<numSamples; i++, <a class="code" href="driver__opengl__extension__def_8h.html#a384">t</a>+=dt)
00294 {
00295 CQuat quat;
00296
00297 <font class="comment">// make exact endTime match (avoid precision problem)</font>
00298 <font class="keywordflow">if</font>(i==numSamples-1)
00299 <a class="code" href="driver__opengl__extension__def_8h.html#a384">t</a>= endTime;
00300
00301 <font class="comment">// evaluate the track</font>
00302 const_cast<ITrack*>(trackIn)->interpolate(<a class="code" href="driver__opengl__extension__def_8h.html#a384">t</a>, quat);
00303
00304 <font class="comment">// normalize this quaternion</font>
00305 quat.normalize();
00306
00307 <font class="comment">// force on same hemisphere according to precedent frame.</font>
00308 <font class="keywordflow">if</font>(i>0)
00309 {
00310 quat.makeClosest(<a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o9">_QuatKeyList</a>[i-1]);
00311 }
00312
00313 <font class="comment">// store time and key.</font>
00314 <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o8">_TimeList</a>[i]= i;
00315 <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o9">_QuatKeyList</a>[i]= quat;
00316 }
00317
00318 }
00319
00320 <font class="comment">// ***************************************************************************</font>
<a name="l00321"></a><a class="code" href="classNL3D_1_1CAnimationOptimizer.html#z379_1">00321</a> <font class="keywordtype">bool</font> CAnimationOptimizer::testConstantQuatTrack()
00322 {
00323 uint numSamples= <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o9">_QuatKeyList</a>.size();
00324 <a class="code" href="debug_8h.html#a6">nlassert</a>(numSamples>0);
00325
00326 <font class="comment">// Get the first sample as the reference quaternion, and test others from this one.</font>
00327 CQuat quatRef= <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o9">_QuatKeyList</a>[0];
00328 <font class="keywordflow">for</font>(uint i=0;i<numSamples;i++)
00329 {
00330 <font class="comment">// All values must be nearly equal to the reference quaternion.</font>
00331 <font class="keywordflow">if</font>(!<a class="code" href="classNL3D_1_1CAnimationOptimizer.html#z379_3">nearlySameQuaternion</a>(quatRef, <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o9">_QuatKeyList</a>[i]))
00332 <font class="keywordflow">return</font> <font class="keyword">false</font>;
00333 }
00334
00335 <font class="comment">// ok.</font>
00336 <font class="keywordflow">return</font> <font class="keyword">true</font>;
00337 }
00338
00339
00340 <font class="comment">// ***************************************************************************</font>
<a name="l00341"></a><a class="code" href="classNL3D_1_1CAnimationOptimizer.html#z379_2">00341</a> <font class="keywordtype">void</font> CAnimationOptimizer::optimizeQuatTrack()
00342 {
00343 uint numSamples= <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o9">_QuatKeyList</a>.size();
00344 <a class="code" href="debug_8h.html#a6">nlassert</a>(numSamples>0);
00345
00346 <font class="comment">// <=2 key? => no opt possible..</font>
00347 <font class="keywordflow">if</font>(numSamples<=2)
00348 <font class="keywordflow">return</font>;
00349
00350 <font class="comment">// prepare dest opt</font>
00351 std::vector<uint16> optTimeList;
00352 std::vector<CQuat> optKeyList;
00353 optTimeList.reserve(numSamples);
00354 optKeyList.reserve(numSamples);
00355
00356 <font class="comment">// Add the first key.</font>
00357 optTimeList.push_back(<a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o8">_TimeList</a>[0]);
00358 optKeyList.push_back(<a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o9">_QuatKeyList</a>[0]);
00359 <font class="keywordtype">double</font> timeRef= <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o8">_TimeList</a>[0];
00360 CQuatD quatRef= <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o9">_QuatKeyList</a>[0];
00361
00362 <font class="comment">// For all keys, but the first and the last, test if can remove them.</font>
00363 <font class="keywordflow">for</font>(uint i=1; i<numSamples-1; i++)
00364 {
00365 CQuatD quatCur= <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o9">_QuatKeyList</a>[i];
00366 CQuatD quatNext= <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o9">_QuatKeyList</a>[i+1];
00367 <font class="keywordtype">double</font> timeCur= <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o8">_TimeList</a>[i];
00368 <font class="keywordtype">double</font> timeNext= <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o8">_TimeList</a>[i+1];
00369
00370 <font class="comment">// must add the key?</font>
00371 <font class="keywordtype">bool</font> mustAdd= <font class="keyword">false</font>;
00372
00373 <font class="comment">// If the Delta time are too big, abort (CTrackSampledQuat limitation)</font>
00374 <font class="keywordflow">if</font>(timeNext-timeRef>255)
00375 {
00376 mustAdd= <font class="keyword">true</font>;
00377 }
00378 <font class="comment">// If the next quaternion or the current quaternion are not on same hemisphere than ref, abort.</font>
00379 <font class="keywordflow">else</font> <font class="keywordflow">if</font>( CQuatD::dotProduct(quatCur, quatRef)<0 || CQuatD::dotProduct(quatNext, quatRef)<0 )
00380 {
00381 mustAdd= <font class="keyword">true</font>;
00382 }
00383 <font class="comment">// else, test interpolation</font>
00384 <font class="keywordflow">else</font>
00385 {
00386 <font class="comment">// If the 3 quats are nearly equals, it is ok (avoid interpolation)</font>
00387 <font class="keywordflow">if</font>( <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#z379_3">nearlySameQuaternion</a>(quatRef, quatCur) && <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#z379_3">nearlySameQuaternion</a>(quatRef, quatNext) )
00388 mustAdd= <font class="keyword">false</font>;
00389 <font class="keywordflow">else</font>
00390 {
00391 <font class="comment">// interpolate.</font>
00392 CQuatD quatInterpolated;
00393 <font class="keywordtype">double</font> <a class="code" href="driver__opengl__extension__def_8h.html#a384">t</a>= (timeCur-timeRef)/(timeNext/timeRef);
00394 quatInterpolated= CQuatD::slerp(quatRef, quatNext, (<font class="keywordtype">float</font>)<a class="code" href="driver__opengl__extension__def_8h.html#a384">t</a>);
00395
00396 <font class="comment">// test if cur and interpolate are equal.</font>
00397 <font class="keywordflow">if</font>( !<a class="code" href="classNL3D_1_1CAnimationOptimizer.html#z379_3">nearlySameQuaternion</a>(quatCur, quatInterpolated) )
00398 mustAdd= <font class="keyword">true</font>;
00399 }
00400 }
00401
00402 <font class="comment">// If must add the key to the optimized track.</font>
00403 <font class="keywordflow">if</font>(mustAdd)
00404 {
00405 optTimeList.push_back(<a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o8">_TimeList</a>[i]);
00406 optKeyList.push_back(<a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o9">_QuatKeyList</a>[i]);
00407 timeRef= <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o8">_TimeList</a>[i];
00408 quatRef= <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o9">_QuatKeyList</a>[i];
00409 }
00410 }
00411
00412 <font class="comment">// Add the last key.</font>
00413 optTimeList.push_back(<a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o8">_TimeList</a>[numSamples-1]);
00414 optKeyList.push_back(<a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o9">_QuatKeyList</a>[numSamples-1]);
00415
00416 <font class="comment">// copy the optimized track to the main one.</font>
00417 <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o8">_TimeList</a>= optTimeList;
00418 <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o9">_QuatKeyList</a>= optKeyList;
00419 }
00420
00421
00422 <font class="comment">// ***************************************************************************</font>
<a name="l00423"></a><a class="code" href="classNL3D_1_1CAnimationOptimizer.html#z379_3">00423</a> <font class="keywordtype">bool</font> CAnimationOptimizer::nearlySameQuaternion(<font class="keyword">const</font> CQuatD &quat0, <font class="keyword">const</font> CQuatD &quat1)
00424 {
00425 <font class="comment">// true if exactly same, or exactly inverse</font>
00426 <font class="keywordflow">if</font>(quat0==quat1 || quat0==-quat1)
00427 <font class="keywordflow">return</font> <font class="keyword">true</font>;
00428
00429 <font class="comment">// Else compute the rotation to go from qRef to q. Use double for better presion.</font>
00430 CQuatD quatDif;
00431 quatDif= quat1 * quat0.conjugate();
00432 <font class="comment">// inverse the quaternion if necessary. ie make closest to the identity quaternion.</font>
00433 <font class="keywordflow">if</font>(quatDif.w<0)
00434 quatDif= -quatDif;
00435
00436 <font class="comment">// compare "angle threshold"</font>
00437 <font class="keywordflow">return</font> (quatDif.w >= <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o3">_QuaternionThreshold</a>);
00438 }
00439
00440
00441 <font class="comment">// ***************************************************************************</font>
00442 <font class="comment">// ***************************************************************************</font>
00443 <font class="comment">// Vector optimisation</font>
00444 <font class="comment">// ***************************************************************************</font>
00445 <font class="comment">// ***************************************************************************</font>
00446
00447
00448 <font class="comment">// ***************************************************************************</font>
<a name="l00449"></a><a class="code" href="classNL3D_1_1CAnimationOptimizer.html#z380_0">00449</a> <font class="keywordtype">void</font> CAnimationOptimizer::sampleVectorTrack(<font class="keyword">const</font> ITrack *trackIn, <font class="keywordtype">float</font> beginTime, <font class="keywordtype">float</font> endTime, uint numSamples)
00450 {
00451 <font class="comment">// resize tmp samples</font>
00452 <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o8">_TimeList</a>.resize(numSamples);
00453 <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o10">_VectorKeyList</a>.resize(numSamples);
00454
00455 <font class="comment">// Sample the animation.</font>
00456 <font class="keywordtype">float</font> <a class="code" href="driver__opengl__extension__def_8h.html#a384">t</a>= beginTime;
00457 <font class="keywordtype">float</font> dt= 0;
00458 <font class="keywordflow">if</font>(numSamples>1)
00459 dt= (endTime-beginTime)/(numSamples-1);
00460 <font class="keywordflow">for</font>(uint i=0;i<numSamples; i++, <a class="code" href="driver__opengl__extension__def_8h.html#a384">t</a>+=dt)
00461 {
00462 CVector vector;
00463
00464 <font class="comment">// make exact endTime match (avoid precision problem)</font>
00465 <font class="keywordflow">if</font>(i==numSamples-1)
00466 <a class="code" href="driver__opengl__extension__def_8h.html#a384">t</a>= endTime;
00467
00468 <font class="comment">// evaluate the track</font>
00469 const_cast<ITrack*>(trackIn)->interpolate(<a class="code" href="driver__opengl__extension__def_8h.html#a384">t</a>, vector);
00470
00471 <font class="comment">// store time and key.</font>
00472 <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o8">_TimeList</a>[i]= i;
00473 <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o10">_VectorKeyList</a>[i]= vector;
00474 }
00475
00476 }
00477
00478 <font class="comment">// ***************************************************************************</font>
<a name="l00479"></a><a class="code" href="classNL3D_1_1CAnimationOptimizer.html#z380_1">00479</a> <font class="keywordtype">bool</font> CAnimationOptimizer::testConstantVectorTrack()
00480 {
00481 uint numSamples= <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o10">_VectorKeyList</a>.size();
00482 <a class="code" href="debug_8h.html#a6">nlassert</a>(numSamples>0);
00483
00484 <font class="comment">// Get the first sample as the reference Vectorer, and test others from this one.</font>
00485 CVector vectorRef= <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o10">_VectorKeyList</a>[0];
00486 <font class="keywordflow">for</font>(uint i=0;i<numSamples;i++)
00487 {
00488 <font class="comment">// All values must be nearly equal to the reference vector.</font>
00489 <font class="keywordflow">if</font>(!<a class="code" href="classNL3D_1_1CAnimationOptimizer.html#z380_3">nearlySameVector</a>(vectorRef, <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o10">_VectorKeyList</a>[i]))
00490 <font class="keywordflow">return</font> <font class="keyword">false</font>;
00491 }
00492
00493 <font class="comment">// ok.</font>
00494 <font class="keywordflow">return</font> <font class="keyword">true</font>;
00495 }
00496
00497
00498 <font class="comment">// ***************************************************************************</font>
<a name="l00499"></a><a class="code" href="classNL3D_1_1CAnimationOptimizer.html#z380_2">00499</a> <font class="keywordtype">void</font> CAnimationOptimizer::optimizeVectorTrack()
00500 {
00501 uint numSamples= <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o10">_VectorKeyList</a>.size();
00502 <a class="code" href="debug_8h.html#a6">nlassert</a>(numSamples>0);
00503
00504 <font class="comment">// <=2 key? => no opt possible..</font>
00505 <font class="keywordflow">if</font>(numSamples<=2)
00506 <font class="keywordflow">return</font>;
00507
00508 <font class="comment">// prepare dest opt</font>
00509 std::vector<uint16> optTimeList;
00510 std::vector<CVector> optKeyList;
00511 optTimeList.reserve(numSamples);
00512 optKeyList.reserve(numSamples);
00513
00514 <font class="comment">// Add the first key.</font>
00515 optTimeList.push_back(<a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o8">_TimeList</a>[0]);
00516 optKeyList.push_back(<a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o10">_VectorKeyList</a>[0]);
00517 <font class="keywordtype">double</font> timeRef= <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o8">_TimeList</a>[0];
00518 CVectorD vectorRef= <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o10">_VectorKeyList</a>[0];
00519
00520 <font class="comment">// For all keys, but the first and the last, test if can remove them.</font>
00521 <font class="keywordflow">for</font>(uint i=1; i<numSamples-1; i++)
00522 {
00523 CVectorD vectorCur= <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o10">_VectorKeyList</a>[i];
00524 CVectorD vectorNext= <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o10">_VectorKeyList</a>[i+1];
00525 <font class="keywordtype">double</font> timeCur= <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o8">_TimeList</a>[i];
00526 <font class="keywordtype">double</font> timeNext= <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o8">_TimeList</a>[i+1];
00527
00528 <font class="comment">// must add the key?</font>
00529 <font class="keywordtype">bool</font> mustAdd= <font class="keyword">false</font>;
00530
00531 <font class="comment">// If the Delta time are too big, abort (CTrackSampledVector limitation)</font>
00532 <font class="keywordflow">if</font>(timeNext-timeRef>255)
00533 {
00534 mustAdd= <font class="keyword">true</font>;
00535 }
00536 <font class="comment">// else, test interpolation</font>
00537 <font class="keywordflow">else</font>
00538 {
00539 <font class="comment">// If the 3 Vectors are nearly equals, it is ok (avoid interpolation)</font>
00540 <font class="keywordflow">if</font>( <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#z380_3">nearlySameVector</a>(vectorRef, vectorCur) && <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#z380_3">nearlySameVector</a>(vectorRef, vectorNext) )
00541 mustAdd= <font class="keyword">false</font>;
00542 <font class="keywordflow">else</font>
00543 {
00544 <font class="comment">// interpolate.</font>
00545 CVectorD vectorInterpolated;
00546 <font class="keywordtype">double</font> <a class="code" href="driver__opengl__extension__def_8h.html#a384">t</a>= (timeCur-timeRef)/(timeNext/timeRef);
00547 vectorInterpolated= vectorRef*(1-<a class="code" href="driver__opengl__extension__def_8h.html#a384">t</a>) + vectorNext*<a class="code" href="driver__opengl__extension__def_8h.html#a384">t</a>;
00548
00549 <font class="comment">// test if cur and interpolate are equal.</font>
00550 <font class="keywordflow">if</font>( !<a class="code" href="classNL3D_1_1CAnimationOptimizer.html#z380_3">nearlySameVector</a>(vectorCur, vectorInterpolated) )
00551 mustAdd= <font class="keyword">true</font>;
00552 }
00553 }
00554
00555 <font class="comment">// If must add the key to the optimized track.</font>
00556 <font class="keywordflow">if</font>(mustAdd)
00557 {
00558 optTimeList.push_back(<a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o8">_TimeList</a>[i]);
00559 optKeyList.push_back(<a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o10">_VectorKeyList</a>[i]);
00560 timeRef= <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o8">_TimeList</a>[i];
00561 vectorRef= <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o10">_VectorKeyList</a>[i];
00562 }
00563 }
00564
00565 <font class="comment">// Add the last key.</font>
00566 optTimeList.push_back(<a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o8">_TimeList</a>[numSamples-1]);
00567 optKeyList.push_back(<a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o10">_VectorKeyList</a>[numSamples-1]);
00568
00569 <font class="comment">// copy the optimized track to the main one.</font>
00570 <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o8">_TimeList</a>= optTimeList;
00571 <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o10">_VectorKeyList</a>= optKeyList;
00572 }
00573
00574
00575 <font class="comment">// ***************************************************************************</font>
<a name="l00576"></a><a class="code" href="classNL3D_1_1CAnimationOptimizer.html#z380_3">00576</a> <font class="keywordtype">bool</font> CAnimationOptimizer::nearlySameVector(<font class="keyword">const</font> CVectorD &v0, <font class="keyword">const</font> CVectorD &v1)
00577 {
00578 <font class="comment">// true if exactly same</font>
00579 <font class="keywordflow">if</font>(v0==v1)
00580 <font class="keywordflow">return</font> <font class="keyword">true</font>;
00581
00582 <font class="comment">// Else compute the dif, use double for better precision</font>
00583 CVectorD vDif;
00584 vDif= v1-v0;
00585
00586 <font class="comment">// compare norm</font>
00587 <font class="keywordflow">return</font> (vDif.norm() <= <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o6">_VectorThreshold</a>);
00588 }
00589
00590
00591 <font class="comment">// ***************************************************************************</font>
00592 <font class="comment">// ***************************************************************************</font>
00593 <font class="comment">// LowPrecisionTrack</font>
00594 <font class="comment">// ***************************************************************************</font>
00595 <font class="comment">// ***************************************************************************</font>
00596
00597
00598 <font class="comment">// ***************************************************************************</font>
<a name="l00599"></a><a class="code" href="classNL3D_1_1CAnimationOptimizer.html#a3">00599</a> <font class="keywordtype">void</font> CAnimationOptimizer::addLowPrecisionTrack(<font class="keyword">const</font> std::string &name)
00600 {
00601 <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o7">_LowPrecTrackKeyName</a>.push_back(name);
00602 }
00603
00604 <font class="comment">// ***************************************************************************</font>
<a name="l00605"></a><a class="code" href="classNL3D_1_1CAnimationOptimizer.html#a4">00605</a> <font class="keywordtype">void</font> CAnimationOptimizer::clearLowPrecisionTracks()
00606 {
00607 <a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o7">_LowPrecTrackKeyName</a>.clear();
00608 }
00609
00610 <font class="comment">// ***************************************************************************</font>
<a name="l00611"></a><a class="code" href="classNL3D_1_1CAnimationOptimizer.html#c3">00611</a> <font class="keywordtype">bool</font> CAnimationOptimizer::isLowPrecisionTrack(<font class="keyword">const</font> std::string &trackName)
00612 {
00613 <font class="keywordflow">for</font>(uint i=0; i<<a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o7">_LowPrecTrackKeyName</a>.size(); i++)
00614 {
00615 <font class="comment">// if find a substr of the key, it is a low prec track</font>
00616 <font class="keywordflow">if</font>( trackName.find(<a class="code" href="classNL3D_1_1CAnimationOptimizer.html#o7">_LowPrecTrackKeyName</a>[i]) != string::npos )
00617 <font class="keywordflow">return</font> <font class="keyword">true</font>;
00618 }
00619
00620 <font class="comment">// no key found</font>
00621 <font class="keywordflow">return</font> <font class="keyword">false</font>;
00622 }
00623
00624
00625 } <font class="comment">// NL3D</font>
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