qgspointcloudstatistics.h

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/***************************************************************************
                         qgspointcloudstatistics.h
                         --------------------
    begin                : May 2022
    copyright            : (C) 2022 by Belgacem Nedjima
    email                : belgacem dot nedjima at gmail dot com
 ***************************************************************************/
 
/***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/
 
#ifndef QGSPOINTCLOUDSTATISTICS_H
#define QGSPOINTCLOUDSTATISTICS_H
 
#include "qgis_core.h"
 
#include <QSet>
#include <QVariant>
#include <QVector>
#include <QtMath>
 
class QgsPointCloudAttribute;
class QgsPointCloudNodeId;
 
#ifdef SIP_RUN
% ModuleHeaderCode
#include "qgspointcloudstatistics.h"
% End
#endif

struct CORE_EXPORT QgsPointCloudAttributeStatistics
{
  double minimum = std::numeric_limits<double>::max();
  double maximum = std::numeric_limits<double>::lowest();
  double mean = 0;
  double stDev = 0;
  int count = 0;
#ifndef SIP_RUN
  QMap<int, int> classCount;
  void cumulateStatistics( const QgsPointCloudAttributeStatistics &stats );
#endif

  int singleClassCount( int cls ) const;
};

class CORE_EXPORT QgsPointCloudStatistics
{
  public:
    QgsPointCloudStatistics();
 
#ifndef SIP_RUN
    QgsPointCloudStatistics( int sampledPointsCount, const QMap<QString, QgsPointCloudAttributeStatistics> &stats );
#endif

    int sampledPointsCount() const { return mSampledPointsCount; }

    void clear();

    void clear( const QVector<QgsPointCloudAttribute> &attributes );

    QgsPointCloudAttributeStatistics statisticsOf( const QString &attribute ) const;

    QList<int> classesOf( const QString &attribute ) const;
 
#ifndef SIP_RUN

    QMap<int, int> availableClasses( const QString &attribute ) const;
#endif

    double minimum( const QString &attribute ) const;

    double maximum( const QString &attribute ) const;

    double mean( const QString &attribute ) const;

    double stDev( const QString &attribute ) const;

    void combineWith( const QgsPointCloudStatistics &stats );

    QByteArray toStatisticsJson() const;

    static QgsPointCloudStatistics fromStatisticsJson( const QByteArray &stats );
 
#ifndef SIP_RUN
    QMap<QString, QgsPointCloudAttributeStatistics> statisticsMap() const { return mStatisticsMap; };
#endif
  private:
    int mSampledPointsCount = 0;
    QMap<QString, QgsPointCloudAttributeStatistics> mStatisticsMap;

    static QJsonObject attributeStatisticsToJson( const QgsPointCloudAttributeStatistics &stats );

    static QgsPointCloudAttributeStatistics fromAttributeStatisticsJson( QJsonObject &stats );
};
 
#endif // QGSPOINTCLOUDSTATISTICS_H