qgsmeshcalcnode.h

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/***************************************************************************
                          qgsmeshcalcnode.h
                          --------------------------------
    begin                : December 18th, 2018
    copyright            : (C) 2018 by Peter Petrik
    email                : zilolv 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 QGSMESHCALCNODE_H
#define QGSMESHCALCNODE_H
 
#define SIP_NO_FILE
 
 
#include <QMap>
#include <QString>
#include <QStringList>
#include <memory>
#include <limits>
 
#include "qgis_analysis.h"
 
#include "qgsmeshcalcutils.h"
 
struct QgsMeshMemoryDatasetGroup;
 
class ANALYSIS_EXPORT QgsMeshCalcNode
{
  public:
    enum Type
    {
      tOperator = 1, 
      tNumber, 
      tNoData, 
      tDatasetGroupRef 
    };
 
    enum Operator
    {
      opPLUS,     
      opMINUS,    
      opMUL,      
      opDIV,      
      opPOW,      
      opEQ,       
      opNE,       
      opGT,       
      opLT,       
      opGE,       
      opLE,       
      opAND,      
      opOR,       
      opNOT,      
      opIF,       
      opSIGN,     
      opMIN,      
      opMAX,      
      opABS,      
      opSUM_AGGR, 
      opMAX_AGGR, 
      opMIN_AGGR, 
      opAVG_AGGR, 
      opNONE,     
    };
 
    QgsMeshCalcNode();
 
    QgsMeshCalcNode( double number );
 
    QgsMeshCalcNode( Operator op, QgsMeshCalcNode *left, QgsMeshCalcNode *right );
 
    QgsMeshCalcNode( QgsMeshCalcNode *condition /* bool condition */,
                     QgsMeshCalcNode *left /*if true */,
                     QgsMeshCalcNode *right /* if false */ );
 
    QgsMeshCalcNode( const QString &datasetGroupName );
 
    ~QgsMeshCalcNode();
 
    Type type() const;
 
    void setLeft( QgsMeshCalcNode *left );
 
    void setRight( QgsMeshCalcNode *right );
 
    bool calculate( const QgsMeshCalcUtils &dsu, QgsMeshMemoryDatasetGroup &result ) const;
 
    QStringList usedDatasetGroupNames() const;
 
    static QgsMeshCalcNode *parseMeshCalcString( const QString &str, QString &parserErrorMsg );
 
  private:
    Q_DISABLE_COPY( QgsMeshCalcNode )
 
    Type mType = tNoData;
    std::unique_ptr<QgsMeshCalcNode> mLeft;
    std::unique_ptr<QgsMeshCalcNode> mRight;
    std::unique_ptr<QgsMeshCalcNode> mCondition;
    double mNumber = std::numeric_limits<double>::quiet_NaN();
    QString mDatasetGroupName;
    Operator mOperator = opNONE;
};
 
 
#endif // QGSMESHCALCNODE_H