Dummy animation support for AssimpView - work in progress. Uses boost in a new way, just because I can.
git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@191 67173fc5-114c-0410-ac8e-9d2fd5bffc1fpull/1/head
ulfjorensen
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013ff599a5
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@ -0,0 +1,138 @@
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/*
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---------------------------------------------------------------------------
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Open Asset Import Library (ASSIMP)
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---------------------------------------------------------------------------
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Copyright (c) 2006-2008, ASSIMP Development Team
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All rights reserved.
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Redistribution and use of this software in source and binary forms,
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with or without modification, are permitted provided that the following
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conditions are met:
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* Redistributions of source code must retain the above
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copyright notice, this list of conditions and the
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following disclaimer.
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* Redistributions in binary form must reproduce the above
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copyright notice, this list of conditions and the
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following disclaimer in the documentation and/or other
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materials provided with the distribution.
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* Neither the name of the ASSIMP team, nor the names of its
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contributors may be used to endorse or promote products
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derived from this software without specific prior
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written permission of the ASSIMP Development Team.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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---------------------------------------------------------------------------
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*/
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#include "stdafx.h"
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#include "assimp_view.h"
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using namespace AssimpView;
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// ------------------------------------------------------------------------------------------------
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// Constructor on a given animation.
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AnimEvaluator::AnimEvaluator( const aiAnimation* pAnim)
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{
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mAnim = pAnim;
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mLastTime = 0.0;
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mLastPositions.resize( pAnim->mNumChannels, boost::make_tuple( 0, 0, 0));
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}
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// ------------------------------------------------------------------------------------------------
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// Evaluates the animation tracks for a given time stamp.
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void AnimEvaluator::Evaluate( double pTime)
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{
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// extract ticks per second. Assume default value if not given
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double ticksPerSecond = mAnim->mTicksPerSecond != 0.0 ? mAnim->mTicksPerSecond : 25.0;
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// every following time calculation happens in ticks
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pTime *= ticksPerSecond;
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// map into anim's duration
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double time = 0.0f;
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if( mAnim->mDuration > 0.0)
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time = fmod( pTime, mAnim->mDuration);
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// calculate the transformations for each animation channel
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for( unsigned int a = 0; a < mAnim->mNumChannels; a++)
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{
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const aiNodeAnim* channel = mAnim->mChannels[a];
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// ******** Position *****
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aiVector3D presentPosition( 0, 0, 0);
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if( channel->mPositionKeys > 0)
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{
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// Look for present frame number. Search from last position if time is after the last time, else from beginning
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// Should be much quicker than always looking from start for the average use case.
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unsigned int frame = (time >= mLastTime) ? mLastPositions[a].get<0>() : 0;
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while( frame < channel->mNumPositionKeys - 1)
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{
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if( time < channel->mPositionKeys[frame+1].mTime)
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break;
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frame++;
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}
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// TODO: (thom) interpolation maybe?
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presentPosition = channel->mPositionKeys[frame].mValue;
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mLastPositions[a].get<0>() = frame;
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}
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// ******** Rotation *********
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aiQuaternion presentRotation( 1, 0, 0, 0);
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if( channel->mRotationKeys > 0)
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{
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unsigned int frame = (time >= mLastTime) ? mLastPositions[a].get<1>() : 0;
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while( frame < channel->mNumRotationKeys - 1)
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{
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if( time < channel->mRotationKeys[frame+1].mTime)
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break;
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frame++;
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}
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// TODO: (thom) quaternions are a prime target for interpolation
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presentRotation = channel->mRotationKeys[frame].mValue;
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mLastPositions[a].get<1>() = frame;
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}
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// ******** Scaling **********
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aiVector3D presentScaling( 0, 0, 0);
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if( channel->mScalingKeys > 0)
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{
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unsigned int frame = (time >= mLastTime) ? mLastPositions[a].get<2>() : 0;
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while( frame < channel->mNumScalingKeys - 1)
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{
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if( time < channel->mScalingKeys[frame+1].mTime)
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break;
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frame++;
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}
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// TODO: (thom) interpolation maybe? This time maybe even logarithmic, not linear
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presentScaling = channel->mScalingKeys[frame].mValue;
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mLastPositions[a].get<2>() = frame;
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}
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// build a transformation matrix from it
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aiMatrix4x4& mat = mTransforms[a];
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mat = aiMatrix4x4( presentRotation.GetMatrix());
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mat.a1 *= presentScaling.x; mat.b1 *= presentScaling.x; mat.c1 *= presentScaling.x;
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mat.a2 *= presentScaling.y; mat.b2 *= presentScaling.y; mat.c2 *= presentScaling.y;
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mat.a3 *= presentScaling.z; mat.b3 *= presentScaling.z; mat.c3 *= presentScaling.z;
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mat.a4 = presentPosition.x; mat.b4 = presentPosition.y; mat.c4 = presentPosition.z;
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}
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mLastTime = time;
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}
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@ -0,0 +1,88 @@
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/** Calculates a pose for a given time of an animation */
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/*
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---------------------------------------------------------------------------
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Open Asset Import Library (ASSIMP)
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---------------------------------------------------------------------------
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Copyright (c) 2006-2008, ASSIMP Development Team
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All rights reserved.
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Redistribution and use of this software in source and binary forms,
|
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with or without modification, are permitted provided that the following
|
||||
conditions are met:
|
||||
|
||||
* Redistributions of source code must retain the above
|
||||
copyright notice, this list of conditions and the
|
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following disclaimer.
|
||||
|
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* Redistributions in binary form must reproduce the above
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||||
copyright notice, this list of conditions and the
|
||||
following disclaimer in the documentation and/or other
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||||
materials provided with the distribution.
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* Neither the name of the ASSIMP team, nor the names of its
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contributors may be used to endorse or promote products
|
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derived from this software without specific prior
|
||||
written permission of the ASSIMP Development Team.
|
||||
|
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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---------------------------------------------------------------------------
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*/
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#ifndef AV_ANIMEVALUATOR_H_INCLUDED
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#define AV_ANIMEVALUATOR_H_INCLUDED
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#include <boost/tuple/tuple.hpp>
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namespace AssimpView
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{
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class AnimEvaluator
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{
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public:
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/** Constructor on a given animation. The animation is fixed throughout the lifetime of
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* the object.
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* @param pAnim The animation to calculate poses for. Ownership of the animation object stays
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* at the caller, the evaluator just keeps a reference to it as long as it persists.
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*/
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AnimEvaluator( const aiAnimation* pAnim);
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/** Evaluates the animation tracks for a given time stamp. The calculated pose can be retrieved as a
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* array of transformation matrices afterwards by calling GetTransformations().
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* @param pTime The time for which you want to evaluate the animation, in seconds. Will be mapped into the animation cycle, so
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* it can be an arbitrary value. Best use with ever-increasing time stamps.
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*/
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void Evaluate( double pTime);
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/** Returns the transform matrices calculated at the last Evaluate() call. The array matches the mChannels array of
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* the aiAnimation. */
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const std::vector<aiMatrix4x4>& GetTransformations() const { return mTransforms; }
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protected:
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/** The animation we're working on */
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const aiAnimation* mAnim;
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/** At which frame the last evaluation happened for each channel.
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* Useful to quickly find the corresponding frame for slightly increased time stamps
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*/
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double mLastTime;
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std::vector<boost::tuple<unsigned int, unsigned int, unsigned int> > mLastPositions;
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/** The array to store the transformations results of the evaluation */
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std::vector<aiMatrix4x4> mTransforms;
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};
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} // end of namespace AssimpView
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#endif // AV_ANIMEVALUATOR_H_INCLUDED
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@ -255,6 +255,9 @@ enum EClickPos
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extern float g_fACMR /*= 3.0f*/;
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extern IDirect3DQuery9* g_piQuery;
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};
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}
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// outside of namespace, to help Intellisense and solve boost::metatype_stuff_miracle
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#include "AnimEvaluator.h"
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#endif // !! AV_MAIN_H_INCLUDED
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@ -679,6 +679,14 @@
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Filter="cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx"
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UniqueIdentifier="{4FC737F1-C7A5-4376-A066-2A32D752A2FF}"
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>
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<File
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RelativePath="..\..\tools\assimp_view\AnimEvaluator.cpp"
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>
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</File>
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<File
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RelativePath="..\..\tools\assimp_view\AnimEvaluator.h"
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>
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</File>
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<File
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RelativePath="..\..\tools\assimp_view\AssetHelper.h"
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>
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