cctwmatrix3x3.h

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#ifndef CCTWMATRIX3X3_H
#define CCTWMATRIX3X3_H

#include "cctwvector3d.h"
#include <stdlib.h>
#include <QSettings>
#include <QString>

template <typename T>
class CctwMatrix3x3
{
public:
  CctwMatrix3x3();
  CctwMatrix3x3(CctwVector3D<T> c1, CctwVector3D<T> c2, CctwVector3D<T> c3);
  CctwMatrix3x3(T a11, T a12, T a13, T a21, T a22, T a23, T a31, T a32, T a33);

public:
        T& operator() (int row, int col);
  const T& operator() (int row, int col) const;

  CctwMatrix3x3 operator+  (const CctwMatrix3x3& mat) const; // Matrix addition
  CctwMatrix3x3 operator+= (const CctwMatrix3x3& mat);       // Matrix addition
  CctwMatrix3x3 operator-  (const CctwMatrix3x3& mat) const; // Matrix subtraction
  CctwMatrix3x3 operator-= (const CctwMatrix3x3& mat);       // Matrix subtraction
  CctwMatrix3x3 operator*  (const CctwMatrix3x3& mat) const; // Matrix multiplication

  CctwVector3D<T>  operator* (const CctwVector3D<T>& vec) const;  // Matrix*Vector multiplication

  bool operator== (const CctwMatrix3x3& mat) const;
  bool operator!= (const CctwMatrix3x3& mat) const;

  double         determinant() const;
  CctwMatrix3x3  inverted(bool *invertible = NULL) const;
  CctwMatrix3x3  transposed() const;

  void setToIdentity();

  template <typename T1>
  friend class CctwMatrix3x3;

  template <typename T1>
  friend class CctwVector3D;

  static CctwMatrix3x3 zero();
  static CctwMatrix3x3 identity();
  static CctwMatrix3x3 rotationMatrix(double r1, double r2, double r3);
  static CctwMatrix3x3 rotX(double r);
  static CctwMatrix3x3 rotY(double r);
  static CctwMatrix3x3 rotZ(double r);

  void setSettingsValue(QSettings *settings, QString name);
  static void customSaver(const QVariant &val, QSettings *settings, QString name);

private:
  T m_Matrix[3][3];
};

typedef CctwMatrix3x3<int>    CctwIntMatrix3x3;
typedef CctwMatrix3x3<double> CctwDoubleMatrix3x3;

Q_DECLARE_METATYPE(CctwIntMatrix3x3)
Q_DECLARE_METATYPE(CctwDoubleMatrix3x3)

#endif // CCTWMATRIX3X3_H