Matrix3x3d.h

//
//  Matrix3x3d.h
//
 
#ifndef __Matrix3x3d__
#define __Matrix3x3d__
 
#include "Vector3d.h"
 
class Matrix3x3d
{
  public:
    Matrix3x3d();
    Matrix3x3d(double m00, double m01, double m02,
               double m10, double m11, double m12,
               double m20, double m21, double m22);
    Matrix3x3d(const Matrix3x3d &o);
    
    void set(double m00, double m01, double m02,
             double m10, double m11, double m12,
             double m20, double m21, double m22);
    void set(Matrix3x3d o);
    void setZero();
    void setIdentity();
    void setDiagonal(double d);
    
    double get(int row, int col);
    void set(int row, int col, double value);
    
    void getColumn(int col, Vector3d &v);
    void setColumn(int col, Vector3d v);
    
    void scale(double s);
    
    void plusEquals(Matrix3x3d b);
    void minusEquals(Matrix3x3d b);
    
    void transpose();
    void transpose(Matrix3x3d &result);
    
    static void add(Matrix3x3d a, Matrix3x3d b, Matrix3x3d &result);
    static void mult(Matrix3x3d a, Matrix3x3d b, Matrix3x3d &result);
    static void mult(Matrix3x3d a, Vector3d v, Vector3d &result);
    
    double determinant();
    
    bool invert(Matrix3x3d &result);
 
    
  private:
    double _m[9];
};
 
#endif