deque.hpp

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#ifndef OPENEV_CONTAINERS_DEQUE_HPP
#define OPENEV_CONTAINERS_DEQUE_HPP
 
#include "openev/core/types.hpp"
#include <deque>
#include <numeric> // For std::accumulate
#include <opencv2/core/types.hpp>
 
namespace ev {
template <typename T>
class Deque_ : public std::deque<Event_<T>> {
  using std::deque<Event_<T>>::deque;
 
public:
  [[nodiscard]] inline double duration() const {
    return std::deque<ev::Event_<T>>::back().t - std::deque<ev::Event_<T>>::front().t;
  }

  [[nodiscard]] inline double rate() const {
    return std::deque<ev::Event_<T>>::size() / duration();
  }

  [[nodiscard]] inline Eventd mean() const {
    const double x = std::accumulate(std::deque<ev::Event_<T>>::begin(), std::deque<ev::Event_<T>>::end(), 0.0, [](double sum, const Event_<T> &e) { return sum + e.x; }) / std::deque<ev::Event_<T>>::size();
    const double y = std::accumulate(std::deque<ev::Event_<T>>::begin(), std::deque<ev::Event_<T>>::end(), 0.0, [](double sum, const Event_<T> &e) { return sum + e.y; }) / std::deque<ev::Event_<T>>::size();
    const double t = std::accumulate(std::deque<ev::Event_<T>>::begin(), std::deque<ev::Event_<T>>::end(), 0.0, [](double sum, const Event_<T> &e) { return sum + e.t; }) / std::deque<ev::Event_<T>>::size();
    const double p = std::accumulate(std::deque<ev::Event_<T>>::begin(), std::deque<ev::Event_<T>>::end(), 0.0, [](double sum, const Event_<T> &e) { return sum + e.p; }) / std::deque<ev::Event_<T>>::size();
    return {x, y, t, p > 0.5};
  }

  [[nodiscard]] inline cv::Point2d meanPoint() const {
    const double x = std::accumulate(std::deque<ev::Event_<T>>::begin(), std::deque<ev::Event_<T>>::end(), 0.0, [](double sum, const Event_<T> &e) { return sum + e.x; }) / std::deque<ev::Event_<T>>::size();
    const double y = std::accumulate(std::deque<ev::Event_<T>>::begin(), std::deque<ev::Event_<T>>::end(), 0.0, [](double sum, const Event_<T> &e) { return sum + e.y; }) / std::deque<ev::Event_<T>>::size();
    return {x, y};
  }

  [[nodiscard]] inline double meanTime() const {
    return std::accumulate(std::deque<ev::Event_<T>>::begin(), std::deque<ev::Event_<T>>::end(), 0.0, [](double sum, const Event_<T> &e) { return sum + e.t; }) / std::deque<ev::Event_<T>>::size();
  }

  [[nodiscard]] inline double midTime() const {
    return 0.5 * (std::deque<ev::Event_<T>>::front().t + std::deque<ev::Event_<T>>::back().t);
  }
};
using Dequei = Deque_<int>;    
using Dequel = Deque_<long>;   
using Dequef = Deque_<float>;  
using Dequed = Deque_<double>; 
using Deque = Dequei;          
} // namespace ev
 
#endif // OPENEV_CONTAINERS_DEQUE_HPP