64 lines
1.8 KiB
C++
64 lines
1.8 KiB
C++
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#include "gtl_math_ampl.h"
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namespace gtl
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{
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namespace math
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{
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ampl::ampl(gtl::analog_data *data)
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: analog_value(data)
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, _sum(0)
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, _dc(0)
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{
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_name = "amplitude";
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}
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void ampl::before_copying_data(std::vector<qreal>::iterator begin, std::vector<qreal>::iterator end)
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{
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_sum -= std::accumulate(begin, end, 0.0);
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}
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void ampl::after_copying_data(std::vector<qreal>::iterator begin, std::vector<qreal>::iterator end)
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{
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_sum += std::accumulate(begin, end, 0.0);
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_dc = _sum/_data.size();
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auto [min, max] = std::minmax_element(begin, end);
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auto ampl_iter = abs(*max - _dc) > abs(*min - _dc) ? max : min;
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std::set<int>::iterator iter_remove_begin = std::lower_bound(_ampl_indexes.begin(), _ampl_indexes.end(), std::distance(_data.begin(), begin));
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std::set<int>::iterator iter_remove_end = std::lower_bound(_ampl_indexes.begin(), _ampl_indexes.end(), std::distance(_data.begin(), end));
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_ampl_indexes.erase(iter_remove_begin, iter_remove_end);
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_ampl_indexes.insert(std::distance(_data.begin(), ampl_iter));
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}
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void ampl::data_changed()
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{
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analog_value::data_changed();
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if(_ampl_indexes.empty())
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{
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_value = 0;
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return;
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}
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qreal ampl = abs(_data[*_ampl_indexes.begin()] - _dc);
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for(int it: _ampl_indexes)
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{
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qreal ampl_current = abs(_data[it] - _dc);
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if(ampl_current > ampl)
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ampl = ampl_current;
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}
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_value = ampl;
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emit value_changed();
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}
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}
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}
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