Tweeny  3.2.0
A Tweening library for modern C++
easingresolve.h
1 /*
2  This file is part of the Tweeny library.
3 
4  Copyright (c) 2016-2021 Leonardo Guilherme Lucena de Freitas
5  Copyright (c) 2016 Guilherme R. Costa
6 
7  Permission is hereby granted, free of charge, to any person obtaining a copy of
8  this software and associated documentation files (the "Software"), to deal in
9  the Software without restriction, including without limitation the rights to
10  use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
11  the Software, and to permit persons to whom the Software is furnished to do so,
12  subject to the following conditions:
13 
14  The above copyright notice and this permission notice shall be included in all
15  copies or substantial portions of the Software.
16 
17  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
19  FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
20  COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
21  IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23 */
24 
25 /*
26  * This file provides the easing resolution mechanism so that the library user can mix lambdas and the bundled
27  * pre-defined easing functions. It shall not be used directly.
28  * This file is private.
29  */
30 
31 #ifndef TWEENY_EASINGRESOLVE_H
32 #define TWEENY_EASINGRESOLVE_H
33 
34 #include <tuple>
35 #include "easing.h"
36 
37 namespace tweeny {
38  namespace detail {
39  using std::get;
40 
41  template<int I, typename TypeTuple, typename FunctionTuple, typename... Fs>
42  struct easingresolve {
43  static void impl(FunctionTuple &b, Fs... fs) {
44  if (sizeof...(Fs) == 0) return;
45  easingresolve<I, TypeTuple, FunctionTuple, Fs...>::impl(b, fs...);
46  }
47  };
48 
49  template<int I, typename TypeTuple, typename FunctionTuple, typename F1, typename... Fs>
50  struct easingresolve<I, TypeTuple, FunctionTuple, F1, Fs...> {
51  static void impl(FunctionTuple &b, F1 f1, Fs... fs) {
52  get<I>(b) = f1;
53  easingresolve<I + 1, TypeTuple, FunctionTuple, Fs...>::impl(b, fs...);
54  }
55  };
56 
57  template<int I, typename TypeTuple, typename FunctionTuple, typename... Fs>
58  struct easingresolve<I, TypeTuple, FunctionTuple, easing::steppedEasing, Fs...> {
59  typedef typename std::tuple_element<I, TypeTuple>::type ArgType;
60 
61  static void impl(FunctionTuple &b, easing::steppedEasing, Fs... fs) {
62  get<I>(b) = easing::stepped.run<ArgType>;
63  easingresolve<I + 1, TypeTuple, FunctionTuple, Fs...>::impl(b, fs...);
64  }
65  };
66 
67  template<int I, typename TypeTuple, typename FunctionTuple, typename... Fs>
68  struct easingresolve<I, TypeTuple, FunctionTuple, easing::linearEasing, Fs...> {
69  typedef typename std::tuple_element<I, TypeTuple>::type ArgType;
70 
71  static void impl(FunctionTuple &b, easing::linearEasing, Fs... fs) {
72  get<I>(b) = easing::linear.run<ArgType>;
73  easingresolve<I + 1, TypeTuple, FunctionTuple, Fs...>::impl(b, fs...);
74  }
75  };
76  template<int I, typename TypeTuple, typename FunctionTuple, typename... Fs>
77  struct easingresolve<I, TypeTuple, FunctionTuple, easing::defaultEasing, Fs...> {
78  typedef typename std::tuple_element<I, TypeTuple>::type ArgType;
79 
80  static void impl(FunctionTuple &b, easing::defaultEasing, Fs... fs) {
81  get<I>(b) = easing::def.run<ArgType>;
82  easingresolve<I + 1, TypeTuple, FunctionTuple, Fs...>::impl(b, fs...);
83  }
84  };
85 
86  #define DECLARE_EASING_RESOLVE(__EASING_TYPE__) \
87  template <int I, typename TypeTuple, typename FunctionTuple, typename... Fs> \
88  struct easingresolve<I, TypeTuple, FunctionTuple, easing::__EASING_TYPE__ ## InEasing, Fs...> { \
89  typedef typename std::tuple_element<I, TypeTuple>::type ArgType; \
90  static void impl(FunctionTuple & b, decltype(easing::__EASING_TYPE__ ## In), Fs... fs) { \
91  get<I>(b) = easing::__EASING_TYPE__ ## In.run<ArgType>; \
92  easingresolve<I+1, TypeTuple, FunctionTuple, Fs...>::impl(b, fs...); \
93  } \
94  }; \
95  \
96  template <int I, typename TypeTuple, typename FunctionTuple, typename... Fs> \
97  struct easingresolve<I, TypeTuple, FunctionTuple, easing::__EASING_TYPE__ ## OutEasing, Fs...> { \
98  typedef typename std::tuple_element<I, TypeTuple>::type ArgType; \
99  static void impl(FunctionTuple & b, decltype(easing::__EASING_TYPE__ ## Out), Fs... fs) { \
100  get<I>(b) = easing::__EASING_TYPE__ ## Out.run<ArgType>; \
101  easingresolve<I+1, TypeTuple, FunctionTuple, Fs...>::impl(b, fs...); \
102  } \
103  }; \
104  \
105  template <int I, typename TypeTuple, typename FunctionTuple, typename... Fs> \
106  struct easingresolve<I, TypeTuple, FunctionTuple, easing::__EASING_TYPE__ ## InOutEasing, Fs...> { \
107  typedef typename std::tuple_element<I, TypeTuple>::type ArgType; \
108  static void impl(FunctionTuple & b, decltype(easing::__EASING_TYPE__ ## InOut), Fs... fs) { \
109  get<I>(b) = easing::__EASING_TYPE__ ## InOut.run<ArgType>; \
110  easingresolve<I+1, TypeTuple, FunctionTuple, Fs...>::impl(b, fs...); \
111  } \
112  }
113 
114  DECLARE_EASING_RESOLVE(quadratic);
115  DECLARE_EASING_RESOLVE(cubic);
116  DECLARE_EASING_RESOLVE(quartic);
117  DECLARE_EASING_RESOLVE(quintic);
118  DECLARE_EASING_RESOLVE(sinusoidal);
119  DECLARE_EASING_RESOLVE(exponential);
120  DECLARE_EASING_RESOLVE(circular);
121  DECLARE_EASING_RESOLVE(bounce);
122  DECLARE_EASING_RESOLVE(elastic);
123  DECLARE_EASING_RESOLVE(back);
124  }
125 }
126 
127 #endif //TWEENY_EASINGRESOLVE_H
The tweeny namespace contains all symbols and names for the Tweeny library.
Definition: MANUAL.dox:1