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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>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> +</pre></div> + +<!-- 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> |