Vector3.h

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/*=========================================================================
    UberSim Source Code Release
    -------------------------------------------------------------------------
    Copyright (C) 2002 Manuela Veloso, Brett Browning, Mike Bowling,
    James Bruce; {mmv, brettb, mhb, jbruce}@cs.cmu.edu
    Erick Tryzelaar {erickt}@andrew.cmu.edu
    School of Computer Science, Carnegie Mellon University
    -------------------------------------------------------------------------
    This software is distributed under the GNU General Public License,
    version 2.  If you do not have a copy of this licence, visit
    www.gnu.org, or write: Free Software Foundation, 59 Temple Place,
    Suite 330 Boston, MA 02111-1307 USA.  This program is distributed
    in the hope that it will be useful, but WITHOUT ANY WARRANTY,
    including MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
    -------------------------------------------------------------------------*/

#ifndef __SIM_VECTOR3_H__
#define __SIM_VECTOR3_H__

#include "Math.h"
class Vector3
{
    public:
        static const Vector3 ZERO;
        static const Vector3 UNIT_X;
        static const Vector3 UNIT_Y;
        static const Vector3 UNIT_Z;

    public:
        Real x;
        Real y;
        Real z;

    public:
        Vector3  ();
        Vector3  (Real x, Real y, Real z);
        Vector3  (const Real* vector);
        Vector3  (const Vector3& vector);
        ~Vector3 ();

    public:
        Real& operator [] (const unsigned int i) const;
        operator Real* ();

        const bool operator == (const Vector3& vector) const;
        const bool operator != (const Vector3& vector) const;

        const Vector3& operator  = (const Vector3& vector);
        const Vector3& operator += (const Real     scalar);
        const Vector3& operator += (const Vector3& vector);
        const Vector3& operator -= (const Real     scalar);
        const Vector3& operator -= (const Vector3& vector);
        const Vector3& operator *= (const Real     scalar);
        const Vector3& operator /= (const Real     scalar);

        const Vector3 operator - () const;
        const Vector3 operator + (const Real     scalar) const;
        const Vector3 operator + (const Vector3& vector) const;
        const Vector3 operator - (const Real     scalar) const;
        const Vector3 operator - (const Vector3& vector) const;
        const Vector3 operator * (const Real     scalar) const;
        const Vector3 operator / (const Real     scalar) const;

        friend const Vector3 operator + (const Real scalar, const Vector3& vector);
        friend const Vector3 operator - (const Real scalar, const Vector3& vector);
        friend const Vector3 operator * (const Real scalar, const Vector3& vector);

    public:
        const Real    dot           (const Vector3& vector) const;
        const Vector3 cross         (const Vector3& vector) const;
        const Real    lengthSquared () const;
        const Real    length        () const;
        const Vector3 unit          () const;
        void          normalize     ();
    static bool is3DPointBelongTo3DLine(Vector3 thePoint, Vector3 firstPoint, Vector3 secondPoint);
    static bool is3DPointBelongTo3DSegment(Vector3 thePoint, Vector3 firstPoint, Vector3 secondPoint);
    static bool isEqual(Vector3 aVector, Vector3 anotherVector);

};

#endif

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