RMatrix.h

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#ifndef RMATRIX_H
#define RMATRIX_H
 
#include "../core_global.h"
 
class RVector;
 
#define RMATRIX_TOLERANCE 1.0e-8
 
class QCADCORE_EXPORT RMatrix {
public:
    RMatrix();
    RMatrix(int r, int c);
    RMatrix(const RMatrix& other);
    ~RMatrix();
 
    bool isValid() const;
 
    static RMatrix createIdentity2x2();
    static RMatrix createIdentity3x3();
    static RMatrix createIdentity(int size);
    static RMatrix createRotation(double angle);
    static RMatrix create2x2(double a11, double a12,
                             double a21, double a22);
    static RMatrix create3x3(double a11, double a12, double a13,
                             double a21, double a22, double a23,
                             double a31, double a32, double a33);
    static RMatrix create3x1(double a11, double a21, double a31);
    static RMatrix create2x3(double a11, double a12, double a13,
                             double a21, double a22, double a23);
 
    RMatrix& operator =(const RMatrix& other);
    bool operator ==(const RMatrix& other) const;
 
    RMatrix operator *(double s) const;
 
    RMatrix operator *=(double f);
    RMatrix operator *(const RMatrix& other) const;
 
    RMatrix multiplyWith(const RMatrix& w) const;
    RMatrix multiplyWith(double w) const;
    RVector multiplyWith(const RVector& w) const;
 
    double* operator [](int i);
 
    void init(int r, int c);
    void reset();
    void clear();
 
    void set3x3(double a11, double a12, double a13,
                double a21, double a22, double a23,
                double a31, double a32, double a33);
    void set3x1(double a11, double a21, double a31);
    void set2x3(double a11, double a12,
                double a13, double a21,
                double a22, double a23);
 
    void set(int r, int c, double v);
    double get(int r, int c) const;
 
    int getRows() const {
        return rows;
    }
    int getCols() const {
        return cols;
    }
 
    bool rref();
 
    RMatrix getInverse() const;
    RMatrix getTransposed() const;
    RMatrix getAppended(const RMatrix& v) const;
 
    bool isRotationAndUniformScale() const;
    double getUniformScaleFactor() const;
    double getRotationAngle() const;
 
protected:
    bool ref(int startRow);
    void multiplyRow(int r, double factor);
    void addRow(int r, double factor, int r2);
    void swapRows(int r1, int r2);
    int getPivotRow(int startRow);
    int getPivotCol(int r);
 
private:
    double** m;
    int rows, cols;
};
 
RMatrix operator *(double factor, const RMatrix& matrix);
 
QCADCORE_EXPORT QDebug operator<<(QDebug dbg, const RMatrix& m);
 
Q_DECLARE_METATYPE(RMatrix)
Q_DECLARE_METATYPE(RMatrix*)
 
#endif