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/*****************************************************************************

 * class LrVector3d (specification)                                          *

 *                                                                           *

 * author : Gilles Subrenat                                                  *

 * creation : Sunday, March 2 2008 (3/2/2008)                                *

 * note :                                                                    *

 *****************************************************************************/

#ifndef LRVECTOR3D_H

#define LRVECTOR3D_H

class LrPoint3d;

class LrVector3d

{

public:

    // constants

    // *********

    static const LrVector3d ZERO;

    static const LrVector3d I;

    static const LrVector3d J;

    static const LrVector3d K;

    // constructors and destructor

    // ***************************

    LrVector3d();

    LrVector3d(const LrVector3d &source);

    LrVector3d(Real x, Real y, Real z);

    LrVector3d(const LrPoint3d &p1, const LrPoint3d &p2);

    explicit LrVector3d(const LrPoint3d &p);

    virtual ~LrVector3d();

    // assignement operator(s)

    // ***********************

    LrVector3d & operator = (const LrVector3d &source);

    LrVector3d & operator += (const LrVector3d &source);

    LrVector3d & operator -= (const LrVector3d &source);

    LrVector3d & operator *= (Real source);

    LrVector3d & operator /= (Real source);

    // comparison operator(s)

    // **********************

    friend bool operator == (const LrVector3d &lhs, const LrVector3d &rhs);

    friend bool operator != (const LrVector3d &lhs, const LrVector3d &rhs);

    // unary and binary operator(s)

    // ****************************

    friend LrVector3d operator + (const LrVector3d &rhs);

    friend LrVector3d operator - (const LrVector3d &rhs);

    friend LrVector3d operator + (const LrVector3d &lhs,

                                  const LrVector3d &rhs);

    friend LrVector3d operator - (const LrVector3d &lhs,

                                  const LrVector3d &rhs);

    friend Real operator * (const LrVector3d &lhs, const LrVector3d &rhs);

    friend LrVector3d operator * (Real lhs, const LrVector3d &rhs);

    friend LrVector3d operator * (const LrVector3d &lhs, Real rhs);

    friend LrVector3d operator / (const LrVector3d &lhs, Real rhs);

    friend LrVector3d operator ^ (const LrVector3d &lhs,

                                  const LrVector3d &rhs);

    // accessors

    // *********

    Real getX() const;

    void setX(Real x);

    Real getY() const;

    void setY(Real y);

    Real getZ() const;

    void setZ(Real z);

    void setXYZ(Real x, Real y, Real z);

    // miscellaneous functions

    // ***********************

    Real length() const;

    Real lengthSquare() const;

    void normalize();

    // data

    // ****

    // public members EXCEPTIONNALY : to simplify use of this class

    Real x, y, z;

private:

    // data

    // ****

    // see public part

};

#endif