1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
|
/*
---------------------------------------------------------------------------
Open Asset Import Library (assimp)
---------------------------------------------------------------------------
Copyright (c) 2006-2022, assimp team
All rights reserved.
Redistribution and use of this software in source and binary forms,
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
following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the
following disclaimer in the documentation and/or other
materials provided with the distribution.
* Neither the name of the assimp team, nor the names of its
contributors may be used to endorse or promote products
derived from this software without specific prior
written permission of the assimp team.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"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
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
---------------------------------------------------------------------------
*/
#pragma once
#ifndef AV_ANIMEVALUATOR_H_INCLUDED
#define AV_ANIMEVALUATOR_H_INCLUDED
/** Calculates a pose for a given time of an animation */
#include <tuple>
#include <vector>
#include <assimp/matrix4x4.h>
struct aiAnimation;
namespace AssimpView {
/**
* @brief Calculates transformations for a given timestamp from a set of animation tracks. Not directly useful,
* better use the AnimPlayer class.
*/
class AnimEvaluator {
public:
/// @brief Constructor on a given animation. The animation is fixed throughout the lifetime of
/// the object.
/// @param pAnim The animation to calculate poses for. Ownership of the animation object stays
/// at the caller, the evaluator just keeps a reference to it as long as it persists.
AnimEvaluator(const aiAnimation *pAnim);
/// @brief The class destructor.
~AnimEvaluator();
/// @brief Evaluates the animation tracks for a given time stamp.
/// The calculated pose can be retrieved as an array of transformation
/// matrices afterwards by calling GetTransformations().
/// @param pTime The time for which you want to evaluate the animation, in seconds.
/// Will be mapped into the animation cycle, so it can get an arbitrary
/// value. Best use with ever-increasing time stamps.
void Evaluate(double pTime);
/// @brief Returns the transform matrices calculated at the last Evaluate() call.
/// The array matches the mChannels array of the aiAnimation.
const std::vector<aiMatrix4x4> &GetTransformations() const { return mTransforms; }
private:
const aiAnimation *mAnim;
double mLastTime;
std::vector<std::tuple<unsigned int, unsigned int, unsigned int>> mLastPositions;
std::vector<aiMatrix4x4> mTransforms;
};
} // end of namespace AssimpView
#endif // AV_ANIMEVALUATOR_H_INCLUDED
|
