93 lines
3.6 KiB
C++
93 lines
3.6 KiB
C++
/*
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---------------------------------------------------------------------------
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Open Asset Import Library (assimp)
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---------------------------------------------------------------------------
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Copyright (c) 2006-2022, assimp 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 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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#pragma once
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#ifndef AV_ANIMEVALUATOR_H_INCLUDED
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#define AV_ANIMEVALUATOR_H_INCLUDED
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/** Calculates a pose for a given time of an animation */
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#include <tuple>
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#include <vector>
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#include <assimp/matrix4x4.h>
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struct aiAnimation;
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namespace AssimpView {
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/**
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* @brief 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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public:
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/// @brief 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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AnimEvaluator(const aiAnimation *pAnim);
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/// @brief The class destructor.
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~AnimEvaluator() = default;
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/// @brief Evaluates the animation tracks for a given time stamp.
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/// The calculated pose can be retrieved as an array of transformation
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/// matrices afterwards by calling GetTransformations().
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/// @param pTime The time for which you want to evaluate the animation, in seconds.
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/// Will be mapped into the animation cycle, so it can get an arbitrary
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/// value. Best use with ever-increasing time stamps.
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void Evaluate(double pTime);
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/// @brief Returns the transform matrices calculated at the last Evaluate() call.
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/// The array matches the mChannels array of the aiAnimation.
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const std::vector<aiMatrix4x4> &GetTransformations() const { return mTransforms; }
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private:
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const aiAnimation *mAnim;
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double mLastTime;
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std::vector<std::tuple<unsigned int, unsigned int, unsigned int>> mLastPositions;
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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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