92 lines
3.7 KiB
C++
92 lines
3.7 KiB
C++
/** 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
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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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#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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/** Calculates transformations for a given timestamp from a set of animation tracks. Not directly useful,
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* better use the AnimPlayer class.
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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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