625 lines
18 KiB
C++
625 lines
18 KiB
C++
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// NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
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// Copyright (C) 2010 Winch Gate Property Limited
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#include "std3d.h"
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#include "nel/3d/animation_optimizer.h"
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#include "nel/misc/mem_stream.h"
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#include "nel/misc/vectord.h"
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#include "nel/3d/track.h"
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#include "nel/3d/track_keyframer.h"
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#include "nel/3d/animation.h"
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#include "nel/3d/track_sampled_quat.h"
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#include "nel/3d/track_sampled_vector.h"
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using namespace NLMISC;
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using namespace std;
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namespace NL3D
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{
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// ***************************************************************************
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CAnimationOptimizer::CAnimationOptimizer()
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{
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_SampleFrameRate= 30;
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_QuaternionThresholdLowPrec= 1.0 - 0.0001;
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_QuaternionThresholdHighPrec= 1.0 - 0.000001;
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_VectorThresholdLowPrec= 0.001;
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_VectorThresholdHighPrec= 0.0001;
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}
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// ***************************************************************************
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void CAnimationOptimizer::setQuaternionThreshold(double lowPrecThre, double highPrecThre)
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{
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nlassert(lowPrecThre>=0);
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nlassert(highPrecThre>=0);
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_QuaternionThresholdLowPrec= 1.0 - lowPrecThre;
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_QuaternionThresholdHighPrec= 1.0 - highPrecThre;
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}
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// ***************************************************************************
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void CAnimationOptimizer::setVectorThreshold(double lowPrecThre, double highPrecThre)
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{
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nlassert(lowPrecThre>=0);
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nlassert(highPrecThre>=0);
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_VectorThresholdLowPrec= lowPrecThre;
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_VectorThresholdHighPrec= highPrecThre;
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}
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// ***************************************************************************
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void CAnimationOptimizer::setSampleFrameRate(float frameRate)
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{
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nlassert(frameRate>0);
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_SampleFrameRate= frameRate;
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}
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// ***************************************************************************
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void CAnimationOptimizer::optimize(const CAnimation &animIn, CAnimation &animOut)
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{
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// reset animOut
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contReset(animOut);
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// Parse all tracks of the animation.
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set<string> setString;
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animIn.getTrackNames (setString);
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set<string>::iterator it;
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for(it=setString.begin();it!=setString.end();it++)
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{
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const string &trackName= *it;
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uint trackId= animIn.getIdTrackByName(trackName);
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nlassert(trackId!=CAnimation::NotFound);
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const ITrack *track= animIn.getTrack(trackId);
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// If the track is optimisable.
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ITrack *newTrack;
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if(isTrackOptimisable(track))
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{
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// choose the threshold according to precision wanted
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if( isLowPrecisionTrack(trackName) )
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{
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_QuaternionThreshold= _QuaternionThresholdLowPrec;
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_VectorThreshold= _VectorThresholdLowPrec;
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}
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else
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{
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_QuaternionThreshold= _QuaternionThresholdHighPrec;
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_VectorThreshold= _VectorThresholdHighPrec;
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}
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// optimize it.
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newTrack= optimizeTrack(track);
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}
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else
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{
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// just clone it.
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newTrack= cloneTrack(track);
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}
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// Add it to the animation
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animOut.addTrack(trackName, newTrack);
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}
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// Parse all SSS shapes of the animation (important for preload of those shapes)
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const vector<string> &shapes= animIn.getSSSShapes();
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for(uint i=0;i<shapes.size();i++)
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animOut.addSSSShape(shapes[i]);
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// Set min animation length
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animOut.setMinEndTime (animIn.getEndTime ());
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nlassert (animOut.getEndTime() == animIn.getEndTime());
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}
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// ***************************************************************************
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ITrack *CAnimationOptimizer::cloneTrack(const ITrack *trackIn)
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{
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CMemStream memStream;
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// write to the stream.
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ITrack *trackInSerial= const_cast<ITrack*>(trackIn);
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memStream.serialPolyPtr(trackInSerial);
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// read from the stream.
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memStream.invert();
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ITrack *ret= NULL;
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memStream.serialPolyPtr(ret);
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return ret;
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}
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// ***************************************************************************
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bool CAnimationOptimizer::isTrackOptimisable(const ITrack *trackIn)
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{
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nlassert(trackIn);
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// If the track is a Linear, Bezier or a TCB track, suppose we can optimize it. Constant may not be interressant....
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if( dynamic_cast<const CTrackKeyFramerTCBQuat*>(trackIn) ||
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dynamic_cast<const CTrackKeyFramerBezierQuat*>(trackIn) ||
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dynamic_cast<const CTrackKeyFramerLinearQuat*>(trackIn) )
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return true;
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// If the track is a Linear, Bezier or a TCB track, suppose we can optimize it. Constant may not be interressant....
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if( dynamic_cast<const CTrackKeyFramerTCBVector*>(trackIn) ||
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dynamic_cast<const CTrackKeyFramerBezierVector*>(trackIn) ||
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dynamic_cast<const CTrackKeyFramerLinearVector*>(trackIn) )
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return true;
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return false;
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}
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// ***************************************************************************
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ITrack *CAnimationOptimizer::optimizeTrack(const ITrack *trackIn)
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{
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// Get track param.
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float beginTime= trackIn->getBeginTime();
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float endTime= trackIn->getEndTime();
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nlassert(endTime>=beginTime);
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// Get num Sample
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uint numSamples= (uint)ceil( (endTime-beginTime)*_SampleFrameRate);
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numSamples= max(1U, numSamples);
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nlassert(numSamples<65535);
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// Optimize Quaternion track??
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//================
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// eval the track only to get its value type!!
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CAnimatedValueBlock avBlock;
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const IAnimatedValue &valueType= ((ITrack*)trackIn)->eval(0, avBlock);
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if( dynamic_cast<const CAnimatedValueQuat *>(&valueType) )
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{
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// sample the animation. Store result in _TimeList/_QuatKeyList
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sampleQuatTrack(trackIn, beginTime, endTime, numSamples);
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// check if the sampled track can be reduced to a TrackDefaultQuat. Test _QuatKeyList.
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if( testConstantQuatTrack() )
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{
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// create a default Track Quat.
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CTrackDefaultQuat *trackDefault= new CTrackDefaultQuat;
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// setup the uniform value.
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trackDefault->setDefaultValue(_QuatKeyList[0]);
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// return the result.
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return trackDefault;
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}
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// else optimize the sampled animation, and build.
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else
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{
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// optimize.
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optimizeQuatTrack();
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// Create a sampled quaternion track
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CTrackSampledQuat *trackSQ= new CTrackSampledQuat;
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// Copy loop from track.
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trackSQ->setLoopMode(trackIn->getLoopMode());
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// Build it.
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trackSQ->build(_TimeList, _QuatKeyList, beginTime, endTime);
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// return result.
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return trackSQ;
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}
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}
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// Optimize Position track??
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//================
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else if( dynamic_cast<const CAnimatedValueVector *>(&valueType) )
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{
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// sample the animation. Store result in _TimeList/_VectorKeyList
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sampleVectorTrack(trackIn, beginTime, endTime, numSamples);
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// check if the sampled track can be reduced to a TrackDefaultVector. Test _VectorKeyList.
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if( testConstantVectorTrack() )
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{
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// create a default Track Vector.
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CTrackDefaultVector *trackDefault= new CTrackDefaultVector;
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// setup the uniform value.
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trackDefault->setDefaultValue(_VectorKeyList[0]);
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// return the result.
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return trackDefault;
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}
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// else optimize the sampled animation, and build.
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else
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{
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// optimize.
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optimizeVectorTrack();
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// Create a sampled Vector track
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CTrackSampledVector *trackSV= new CTrackSampledVector;
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// Copy loop from track.
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trackSV->setLoopMode(trackIn->getLoopMode());
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// Build it.
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trackSV->build(_TimeList, _VectorKeyList, beginTime, endTime);
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// return result.
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return trackSV;
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}
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}
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else
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{
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// Must be a quaternion track or vector track for now.
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nlstop;
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// Avoid warning.
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return cloneTrack(trackIn);
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}
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}
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// ***************************************************************************
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// ***************************************************************************
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// Quaternion optimisation
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// ***************************************************************************
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// ***************************************************************************
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// ***************************************************************************
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void CAnimationOptimizer::sampleQuatTrack(const ITrack *trackIn, float beginTime, float endTime, uint numSamples)
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{
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// resize tmp samples
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_TimeList.resize(numSamples);
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_QuatKeyList.resize(numSamples);
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// Sample the animation.
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float t= beginTime;
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float dt= 0;
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if(numSamples>1)
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dt= (endTime-beginTime)/(numSamples-1);
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for(uint i=0;i<numSamples; i++, t+=dt)
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{
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CQuat quat;
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// make exact endTime match (avoid precision problem)
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if(i==numSamples-1)
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t= endTime;
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// evaluate the track
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const_cast<ITrack*>(trackIn)->interpolate(t, quat);
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// normalize this quaternion
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quat.normalize();
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// force on same hemisphere according to precedent frame.
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if(i>0)
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{
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quat.makeClosest(_QuatKeyList[i-1]);
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}
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// store time and key.
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_TimeList[i]= i;
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_QuatKeyList[i]= quat;
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}
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}
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// ***************************************************************************
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bool CAnimationOptimizer::testConstantQuatTrack()
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{
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uint numSamples= _QuatKeyList.size();
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nlassert(numSamples>0);
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// Get the first sample as the reference quaternion, and test others from this one.
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CQuat quatRef= _QuatKeyList[0];
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for(uint i=0;i<numSamples;i++)
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{
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// All values must be nearly equal to the reference quaternion.
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if(!nearlySameQuaternion(quatRef, _QuatKeyList[i]))
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return false;
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}
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// ok.
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return true;
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}
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// ***************************************************************************
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void CAnimationOptimizer::optimizeQuatTrack()
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{
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uint numSamples= _QuatKeyList.size();
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nlassert(numSamples>0);
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// <=2 key? => no opt possible..
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if(numSamples<=2)
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return;
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// prepare dest opt
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std::vector<uint16> optTimeList;
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std::vector<CQuat> optKeyList;
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optTimeList.reserve(numSamples);
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optKeyList.reserve(numSamples);
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// Add the first key.
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optTimeList.push_back(_TimeList[0]);
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optKeyList.push_back(_QuatKeyList[0]);
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double timeRef= _TimeList[0];
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CQuatD quatRef= _QuatKeyList[0];
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// For all keys, but the first and the last, test if can remove them.
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for(uint i=1; i<numSamples-1; i++)
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{
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CQuatD quatCur= _QuatKeyList[i];
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CQuatD quatNext= _QuatKeyList[i+1];
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double timeCur= _TimeList[i];
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double timeNext= _TimeList[i+1];
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// must add the key?
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bool mustAdd= false;
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// If the Delta time are too big, abort (CTrackSampledQuat limitation)
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if(timeNext-timeRef>255)
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{
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mustAdd= true;
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}
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// If the next quaternion or the current quaternion are not on same hemisphere than ref, abort.
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else if( CQuatD::dotProduct(quatCur, quatRef)<0 || CQuatD::dotProduct(quatNext, quatRef)<0 )
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{
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mustAdd= true;
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}
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// else, test interpolation
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else
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{
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// If the 3 quats are nearly equals, it is ok (avoid interpolation)
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if( nearlySameQuaternion(quatRef, quatCur) && nearlySameQuaternion(quatRef, quatNext) )
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mustAdd= false;
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else
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{
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// interpolate.
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CQuatD quatInterpolated;
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double t= (timeCur-timeRef)/(timeNext/timeRef);
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quatInterpolated= CQuatD::slerp(quatRef, quatNext, (float)t);
|
||
|
|
|
||
|
|
// test if cur and interpolate are equal.
|
||
|
|
if( !nearlySameQuaternion(quatCur, quatInterpolated) )
|
||
|
|
mustAdd= true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// If must add the key to the optimized track.
|
||
|
|
if(mustAdd)
|
||
|
|
{
|
||
|
|
optTimeList.push_back(_TimeList[i]);
|
||
|
|
optKeyList.push_back(_QuatKeyList[i]);
|
||
|
|
timeRef= _TimeList[i];
|
||
|
|
quatRef= _QuatKeyList[i];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Add the last key.
|
||
|
|
optTimeList.push_back(_TimeList[numSamples-1]);
|
||
|
|
optKeyList.push_back(_QuatKeyList[numSamples-1]);
|
||
|
|
|
||
|
|
// copy the optimized track to the main one.
|
||
|
|
_TimeList= optTimeList;
|
||
|
|
_QuatKeyList= optKeyList;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
// ***************************************************************************
|
||
|
|
bool CAnimationOptimizer::nearlySameQuaternion(const CQuatD &quat0, const CQuatD &quat1)
|
||
|
|
{
|
||
|
|
// true if exactly same, or exactly inverse
|
||
|
|
if(quat0==quat1 || quat0==-quat1)
|
||
|
|
return true;
|
||
|
|
|
||
|
|
// Else compute the rotation to go from qRef to q. Use double for better presion.
|
||
|
|
CQuatD quatDif;
|
||
|
|
quatDif= quat1 * quat0.conjugate();
|
||
|
|
// inverse the quaternion if necessary. ie make closest to the identity quaternion.
|
||
|
|
if(quatDif.w<0)
|
||
|
|
quatDif= -quatDif;
|
||
|
|
|
||
|
|
// compare "angle threshold"
|
||
|
|
return (quatDif.w >= _QuaternionThreshold);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
// ***************************************************************************
|
||
|
|
// ***************************************************************************
|
||
|
|
// Vector optimisation
|
||
|
|
// ***************************************************************************
|
||
|
|
// ***************************************************************************
|
||
|
|
|
||
|
|
|
||
|
|
// ***************************************************************************
|
||
|
|
void CAnimationOptimizer::sampleVectorTrack(const ITrack *trackIn, float beginTime, float endTime, uint numSamples)
|
||
|
|
{
|
||
|
|
// resize tmp samples
|
||
|
|
_TimeList.resize(numSamples);
|
||
|
|
_VectorKeyList.resize(numSamples);
|
||
|
|
|
||
|
|
// Sample the animation.
|
||
|
|
float t= beginTime;
|
||
|
|
float dt= 0;
|
||
|
|
if(numSamples>1)
|
||
|
|
dt= (endTime-beginTime)/(numSamples-1);
|
||
|
|
for(uint i=0;i<numSamples; i++, t+=dt)
|
||
|
|
{
|
||
|
|
CVector vector;
|
||
|
|
|
||
|
|
// make exact endTime match (avoid precision problem)
|
||
|
|
if(i==numSamples-1)
|
||
|
|
t= endTime;
|
||
|
|
|
||
|
|
// evaluate the track
|
||
|
|
const_cast<ITrack*>(trackIn)->interpolate(t, vector);
|
||
|
|
|
||
|
|
// store time and key.
|
||
|
|
_TimeList[i]= i;
|
||
|
|
_VectorKeyList[i]= vector;
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
// ***************************************************************************
|
||
|
|
bool CAnimationOptimizer::testConstantVectorTrack()
|
||
|
|
{
|
||
|
|
uint numSamples= _VectorKeyList.size();
|
||
|
|
nlassert(numSamples>0);
|
||
|
|
|
||
|
|
// Get the first sample as the reference Vectorer, and test others from this one.
|
||
|
|
CVector vectorRef= _VectorKeyList[0];
|
||
|
|
for(uint i=0;i<numSamples;i++)
|
||
|
|
{
|
||
|
|
// All values must be nearly equal to the reference vector.
|
||
|
|
if(!nearlySameVector(vectorRef, _VectorKeyList[i]))
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
// ok.
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
// ***************************************************************************
|
||
|
|
void CAnimationOptimizer::optimizeVectorTrack()
|
||
|
|
{
|
||
|
|
uint numSamples= _VectorKeyList.size();
|
||
|
|
nlassert(numSamples>0);
|
||
|
|
|
||
|
|
// <=2 key? => no opt possible..
|
||
|
|
if(numSamples<=2)
|
||
|
|
return;
|
||
|
|
|
||
|
|
// prepare dest opt
|
||
|
|
std::vector<uint16> optTimeList;
|
||
|
|
std::vector<CVector> optKeyList;
|
||
|
|
optTimeList.reserve(numSamples);
|
||
|
|
optKeyList.reserve(numSamples);
|
||
|
|
|
||
|
|
// Add the first key.
|
||
|
|
optTimeList.push_back(_TimeList[0]);
|
||
|
|
optKeyList.push_back(_VectorKeyList[0]);
|
||
|
|
double timeRef= _TimeList[0];
|
||
|
|
CVectorD vectorRef= _VectorKeyList[0];
|
||
|
|
|
||
|
|
// For all keys, but the first and the last, test if can remove them.
|
||
|
|
for(uint i=1; i<numSamples-1; i++)
|
||
|
|
{
|
||
|
|
CVectorD vectorCur= _VectorKeyList[i];
|
||
|
|
CVectorD vectorNext= _VectorKeyList[i+1];
|
||
|
|
double timeCur= _TimeList[i];
|
||
|
|
double timeNext= _TimeList[i+1];
|
||
|
|
|
||
|
|
// must add the key?
|
||
|
|
bool mustAdd= false;
|
||
|
|
|
||
|
|
// If the Delta time are too big, abort (CTrackSampledVector limitation)
|
||
|
|
if(timeNext-timeRef>255)
|
||
|
|
{
|
||
|
|
mustAdd= true;
|
||
|
|
}
|
||
|
|
// else, test interpolation
|
||
|
|
else
|
||
|
|
{
|
||
|
|
// If the 3 Vectors are nearly equals, it is ok (avoid interpolation)
|
||
|
|
if( nearlySameVector(vectorRef, vectorCur) && nearlySameVector(vectorRef, vectorNext) )
|
||
|
|
mustAdd= false;
|
||
|
|
else
|
||
|
|
{
|
||
|
|
// interpolate.
|
||
|
|
CVectorD vectorInterpolated;
|
||
|
|
double t= (timeCur-timeRef)/(timeNext/timeRef);
|
||
|
|
vectorInterpolated= vectorRef*(1-t) + vectorNext*t;
|
||
|
|
|
||
|
|
// test if cur and interpolate are equal.
|
||
|
|
if( !nearlySameVector(vectorCur, vectorInterpolated) )
|
||
|
|
mustAdd= true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// If must add the key to the optimized track.
|
||
|
|
if(mustAdd)
|
||
|
|
{
|
||
|
|
optTimeList.push_back(_TimeList[i]);
|
||
|
|
optKeyList.push_back(_VectorKeyList[i]);
|
||
|
|
timeRef= _TimeList[i];
|
||
|
|
vectorRef= _VectorKeyList[i];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Add the last key.
|
||
|
|
optTimeList.push_back(_TimeList[numSamples-1]);
|
||
|
|
optKeyList.push_back(_VectorKeyList[numSamples-1]);
|
||
|
|
|
||
|
|
// copy the optimized track to the main one.
|
||
|
|
_TimeList= optTimeList;
|
||
|
|
_VectorKeyList= optKeyList;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
// ***************************************************************************
|
||
|
|
bool CAnimationOptimizer::nearlySameVector(const CVectorD &v0, const CVectorD &v1)
|
||
|
|
{
|
||
|
|
// true if exactly same
|
||
|
|
if(v0==v1)
|
||
|
|
return true;
|
||
|
|
|
||
|
|
// Else compute the dif, use double for better precision
|
||
|
|
CVectorD vDif;
|
||
|
|
vDif= v1-v0;
|
||
|
|
|
||
|
|
// compare norm
|
||
|
|
return (vDif.norm() <= _VectorThreshold);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
// ***************************************************************************
|
||
|
|
// ***************************************************************************
|
||
|
|
// LowPrecisionTrack
|
||
|
|
// ***************************************************************************
|
||
|
|
// ***************************************************************************
|
||
|
|
|
||
|
|
|
||
|
|
// ***************************************************************************
|
||
|
|
void CAnimationOptimizer::addLowPrecisionTrack(const std::string &name)
|
||
|
|
{
|
||
|
|
_LowPrecTrackKeyName.push_back(name);
|
||
|
|
}
|
||
|
|
|
||
|
|
// ***************************************************************************
|
||
|
|
void CAnimationOptimizer::clearLowPrecisionTracks()
|
||
|
|
{
|
||
|
|
_LowPrecTrackKeyName.clear();
|
||
|
|
}
|
||
|
|
|
||
|
|
// ***************************************************************************
|
||
|
|
bool CAnimationOptimizer::isLowPrecisionTrack(const std::string &trackName)
|
||
|
|
{
|
||
|
|
for(uint i=0; i<_LowPrecTrackKeyName.size(); i++)
|
||
|
|
{
|
||
|
|
// if find a substr of the key, it is a low prec track
|
||
|
|
if( trackName.find(_LowPrecTrackKeyName[i]) != string::npos )
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
// no key found
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
} // NL3D
|