text: /*****************************************************************************************
   *                                                                                       *
   * OpenSpace                                                                             *
   *                                                                                       *
   * Copyright (c) 2014-2019                                                               *
   *                                                                                       *
   * Permission is hereby granted, free of charge, to any person obtaining a copy of this  *
   * software and associated documentation files (the "Software"), to deal in the Software *
   * without restriction, including without limitation the rights to use, copy, modify,    *
   * merge, publish, distribute, sublicense, and/or sell copies of the Software, and to    *
   * permit persons to whom the Software is furnished to do so, subject to the following   *
   * conditions:                                                                           *
   *                                                                                       *
   * The above copyright notice and this permission notice shall be included in all copies *
   * or substantial portions of the Software.                                              *
   *                                                                                       *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,   *
   * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A         *
   * PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT    *
   * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF  *
   * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE  *
   * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                                         *
   ****************************************************************************************/
  
  namespace openspace {
  
  template <typename T>
  Keyframe<T>::Keyframe(size_t i, double t, T d)
      : KeyframeBase{ i, t }
      , data(std::move(d))
  {}
  
  template <typename T>
  void Timeline<T>::addKeyframe(double timestamp, T&& data) {
      Keyframe<T> keyframe(++_nextKeyframeId, timestamp, std::move(data));
      const auto iter = std::upper_bound(
          _keyframes.cbegin(),
          _keyframes.cend(),
          keyframe,
          &compareKeyframeTimes
      );
      _keyframes.insert(iter, std::move(keyframe));
  }
  
  template <typename T>
  void Timeline<T>::addKeyframe(double timestamp, const T& data) {
      Keyframe<T> keyframe(++_nextKeyframeId, timestamp, data);
      const auto iter = std::upper_bound(
          _keyframes.cbegin(),
          _keyframes.cend(),
          keyframe,
          &compareKeyframeTimes
      );
      _keyframes.insert(iter, std::move(keyframe));
  }
  
  template <typename T>
  void Timeline<T>::removeKeyframesAfter(double timestamp, bool inclusive) {
      typename std::deque<Keyframe<T>>::const_iterator iter;
      if (inclusive) {
          iter = std::lower_bound(
              _keyframes.cbegin(),
              _keyframes.cend(),
              timestamp,
              &compareKeyframeTimeWithTime
          );
      }
      else {
          iter = std::upper_bound(
              _keyframes.cbegin(),
              _keyframes.cend(),
              timestamp,
              &compareTimeWithKeyframeTime
          );
      }
  
      _keyframes.erase(iter, _keyframes.end());
  }
  
  template <typename T>
  void Timeline<T>::removeKeyframesBefore(double timestamp, bool inclusive) {
      typename std::deque<Keyframe<T>>::const_iterator iter;
      if (inclusive) {
          iter = std::upper_bound(
              _keyframes.cbegin(),
              _keyframes.cend(),
              timestamp,
              &compareTimeWithKeyframeTime
          );
      }
      else {
          iter = std::lower_bound(
              _keyframes.cbegin(),
              _keyframes.cend(),
              timestamp,
              &compareKeyframeTimeWithTime
          );
      }
  
      _keyframes.erase(_keyframes.begin(), iter);
  }
  
  template <typename T>
  void Timeline<T>::removeKeyframesBetween(double begin, double end, bool inclusiveBegin,
                                           bool inclusiveEnd)
  {
      typename std::deque<Keyframe<T>>::const_iterator beginIter;
      if (inclusiveBegin) {
          beginIter = std::lower_bound(
              _keyframes.cbegin(),
              _keyframes.cend(),
              begin,
              &compareKeyframeTimeWithTime
          );
      }
      else {
          beginIter = std::upper_bound(
              _keyframes.cbegin(),
              _keyframes.cend(),
              begin,
              &compareTimeWithKeyframeTime
          );
      }
  
  
      typename std::deque<Keyframe<T>>::const_iterator endIter;
      if (inclusiveEnd) {
          endIter = std::upper_bound(
              beginIter,
              _keyframes.cend(),
              end,
              &compareTimeWithKeyframeTime
          );
      }
      else {
          endIter = std::lower_bound(
              beginIter,
              _keyframes.cend(),
              end,
              &compareKeyframeTimeWithTime
          );
      }
  
      _keyframes.erase(beginIter, endIter);
  }
  
  template <typename T>
  void Timeline<T>::clearKeyframes() {
      _keyframes.clear();
  }
  
  template <typename T>
  void Timeline<T>::removeKeyframe(size_t id) {
      _keyframes.erase(
          std::remove_if(
              _keyframes.begin(),
              _keyframes.end(),
              [id] (const Keyframe<T>& keyframe) { return keyframe.id == id; }
          ),
          _keyframes.end()
      );
  }
  
  template <typename T>
  size_t Timeline<T>::nKeyframes() const {
      return _keyframes.size();
  }
  
  template <typename T>
  const Keyframe<T>* Timeline<T>::firstKeyframeAfter(double timestamp, bool inclusive) const
  {
      typename std::deque<Keyframe<T>>::const_iterator it;
      if (inclusive) {
          it = std::lower_bound(
              _keyframes.begin(),
              _keyframes.end(),
              timestamp,
              &compareKeyframeTimeWithTime
          );
      }
      else {
          it = std::upper_bound(
              _keyframes.begin(),
              _keyframes.end(),
              timestamp,
              &compareTimeWithKeyframeTime
          );
      }
  
      if (it == _keyframes.end()) {
          return nullptr;
      }
      return &(*it);
  }
  
  template <typename T>
  const Keyframe<T>* Timeline<T>::lastKeyframeBefore(double timestamp, bool inclusive) const
  {
      typename std::deque<Keyframe<T>>::const_iterator it;
      if (inclusive) {
          it = std::upper_bound(
              _keyframes.begin(),
              _keyframes.end(),
              timestamp,
              &compareTimeWithKeyframeTime
          );
      }
      else {
          it = std::lower_bound(
              _keyframes.begin(),
              _keyframes.end(),
              timestamp,
              &compareKeyframeTimeWithTime
          );
      }
  
      if (it == _keyframes.begin()) {
          return nullptr;
      }
      it--;
      return &(*it);
  }
  
  template <typename T>
  const std::deque<Keyframe<T>>& Timeline<T>::keyframes() const {
      return _keyframes;
  }
  
  }  // namespace openspace
  