qgsrastermatrix.h

Go to the documentation of this file.

/***************************************************************************
                          qgsrastermatrix.h
                          -----------------
    begin                : 2010-10-23
    copyright            : (C) 20010 by Marco Hugentobler
    email                : marco dot hugentobler at sourcepole dot ch
***************************************************************************/
 
/***************************************************************************
 *                                                                         *
 *   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 QGSRASTERMATRIX_H
#define QGSRASTERMATRIX_H
 
#include "qgis_analysis.h"
#include "qgis_sip.h"
 
class ANALYSIS_EXPORT QgsRasterMatrix
{
  public:
    enum TwoArgOperator
    {
      opPLUS,
      opMINUS,
      opMUL,
      opDIV,
      opPOW,
      opEQ, // =
      opNE, // != resp. <>
      opGT, // >
      opLT, // <
      opGE, // >=
      opLE, // <=
      opAND,
      opOR,
      opMIN,
      opMAX
    };
 
    enum OneArgOperator
    {
      opSQRT,
      opSIN,
      opCOS,
      opTAN,
      opASIN,
      opACOS,
      opATAN,
      opSIGN,
      opLOG,
      opLOG10,
      opABS,
    };
 
    QgsRasterMatrix() = default;
 
    QgsRasterMatrix( int nCols, int nRows, double *data, double nodataValue ) SIP_SKIP;
    QgsRasterMatrix( const QgsRasterMatrix &m );
    ~QgsRasterMatrix();
 
    bool isNumber() const { return ( mColumns == 1 && mRows == 1 ); }
    double number() const { return mData[0]; }
 
    double *data() SIP_SKIP { return mData; }
 
    double *takeData() SIP_SKIP;
 
    void setData( int cols, int rows, double *data, double nodataValue );
 
    int nColumns() const { return mColumns; }
    int nRows() const { return mRows; }
 
    double nodataValue() const { return mNodataValue; }
    void setNodataValue( double d ) { mNodataValue = d; }
 
    QgsRasterMatrix &operator=( const QgsRasterMatrix &m );
    bool add( const QgsRasterMatrix &other );
    bool subtract( const QgsRasterMatrix &other );
    bool multiply( const QgsRasterMatrix &other );
    bool divide( const QgsRasterMatrix &other );
    bool power( const QgsRasterMatrix &other );
    bool equal( const QgsRasterMatrix &other );
    bool notEqual( const QgsRasterMatrix &other );
    bool greaterThan( const QgsRasterMatrix &other );
    bool lesserThan( const QgsRasterMatrix &other );
    bool greaterEqual( const QgsRasterMatrix &other );
    bool lesserEqual( const QgsRasterMatrix &other );
    bool logicalAnd( const QgsRasterMatrix &other );
    bool logicalOr( const QgsRasterMatrix &other );
 
    bool max( const QgsRasterMatrix &other );
 
    bool min( const QgsRasterMatrix &other );
 
    bool squareRoot();
    bool sinus();
    bool asinus();
    bool cosinus();
    bool acosinus();
    bool tangens();
    bool atangens();
    bool changeSign();
    bool log();
    bool log10();
 
    bool absoluteValue();
 
  private:
    int mColumns = 0;
    int mRows = 0;
    double *mData = nullptr;
    double mNodataValue = -1;
 
    bool twoArgumentOperation( TwoArgOperator op, const QgsRasterMatrix &other );
    double calculateTwoArgumentOp( TwoArgOperator op, double arg1, double arg2 ) const;
 
    /*sqrt, std::sin, std::cos, tan, asin, acos, atan*/
    bool oneArgumentOperation( OneArgOperator op );
    bool testPowerValidity( double base, double power ) const;
};
 
#endif // QGSRASTERMATRIX_H