File indexing completed on 2024-05-12 15:57:03

 /*
  *  SPDX-FileCopyrightText: 2017 Dmitry Kazakov <dimula73@gmail.com>
  *
  *  SPDX-License-Identifier: GPL-2.0-or-later
  */
 
 #include "KisRollingMeanAccumulatorWrapper.h"
 
 #include <boost/accumulators/accumulators.hpp>
 #include <boost/accumulators/statistics/stats.hpp>
 #include <boost/accumulators/statistics/rolling_mean.hpp>
 
 using namespace boost::accumulators;
 
 struct KisRollingMeanAccumulatorWrapper::Private {
     Private(int windowSize)
         : accumulator(tag::rolling_window::window_size = windowSize)
     {
     }
 
     accumulator_set<qreal, stats<tag::lazy_rolling_mean> > accumulator;
 };
 
 
 KisRollingMeanAccumulatorWrapper::KisRollingMeanAccumulatorWrapper(int windowSize)
     : m_d(new Private(windowSize))
 {
 }
 
 KisRollingMeanAccumulatorWrapper::~KisRollingMeanAccumulatorWrapper()
 {
 }
 
 void KisRollingMeanAccumulatorWrapper::operator()(qreal value)
 {
     m_d->accumulator(value);
 }
 
 qreal KisRollingMeanAccumulatorWrapper::rollingMean() const
 {
     return boost::accumulators::rolling_mean(m_d->accumulator);
 }
 
 qreal KisRollingMeanAccumulatorWrapper::rollingMeanSafe() const
 {
     return boost::accumulators::rolling_count(m_d->accumulator) > 0 ?
         boost::accumulators::rolling_mean(m_d->accumulator) : 0;
 }
 
 int KisRollingMeanAccumulatorWrapper::rollingCount() const
 {
     return boost::accumulators::rolling_count(m_d->accumulator);
 }
 
 void KisRollingMeanAccumulatorWrapper::reset(int windowSize)
 {
     m_d->accumulator =
         accumulator_set<qreal, stats<tag::lazy_rolling_mean>>(
             tag::rolling_window::window_size = windowSize);
 }