#include "gtl_math_offset.h"



namespace gtl
{
    namespace math
    {
        offset::offset(gtl::analog_data *data)
            : analog_value(data)
        , _sum(0)
        {
            _name = "offset";
        }

        void offset::before_copying_data(std::vector<qreal>::iterator begin, std::vector<qreal>::iterator end)
        {
            _sum -= std::accumulate(begin, end, 0.0);
        }

        void offset::after_copying_data(std::vector<qreal>::iterator begin, std::vector<qreal>::iterator end)
        {
            _sum += std::accumulate(begin, end, 0.0);
        }

        void offset::data_changed()
        {
            analog_value::data_changed();

            _value = _sum/_data.size();

            emit value_changed();
        }
   }
}