GVector3.h

/***************************************************************************
 *   Copyright (C) 2003-2004 by Raphael Langerhorst                        *
 *   raphael-langerhorst@gmx.at                                            *
 *                                                                         *
 *   Copyright (C) 2004 Gerald Degeneve <gerald.degeneve@gmx.at>           *
 *                                                                         *
 *   Permission is hereby granted, free of charge, to any person obtaining *
 *   a copy of this software and associated documentation files (the       *
 *   "Software"), to deal in the Software without restriction, including   *
 *   without limitation the rights to use, copy, modify, merge, publish,   *
 *   distribute, sublicense, and/or sell copies of the Software, and to    *
 *   permit persons to whom the Software is furnished to do so, subject to *
 *   the following conditions:                                             *
 *                                                                         *
 *   The above copyright notice and this permission notice shall be        *
 *   included in all copies or substantial portions of the Software.       *
 *                                                                         *
 *   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       *
 *   EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    *
 *   MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*
 *   IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR     *
 *   OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, *
 *   ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR *
 *   OTHER DEALINGS IN THE SOFTWARE.                                       *
 ***************************************************************************/

#ifndef GVECTOR3H
#define GVECTOR3H

class QString;

namespace GCS
{

class GVector3
{
  public:
    
    union
    {
        struct
        {
            double x;
            double y;
            double z;
        };
        
        struct
        {
            double u;
            double v;
            double w;
        };

        double c[3];
        
    };

  public:

    GVector3();
    
    GVector3(const double d);

    GVector3(const double x, const double y, const double z);
    
    GVector3(const double* component);
    
    GVector3(const GVector3& original);
    
    GVector3(const QString& values);

    double length() const;
    
    double lengthsq() const;

    GVector3& reset();
    
    GVector3& set(double x, double y, double z);
    
    GVector3& set(const GVector3& original);

    GVector3& normalize();
    
    GVector3& scaleXYZ(const GVector3& scale);
    
    GVector3& scaleXYZ(double x, double y, double z);

    GVector3& add(const GVector3& right);
    
    GVector3& sub(const GVector3& right);
    
    GVector3& mul(double scalar);
    
    double dot(const GVector3& right) const;

    GVector3 cross(const GVector3& right) const;
    
    
    operator double* ();
    
    GVector3& operator = (const GVector3& original);

    GVector3 operator + (const GVector3& right) const;
    
    GVector3 operator - (const GVector3& right) const;
    
    GVector3 operator * (double factor) const;

    GVector3& operator += (const GVector3& right);
    
    GVector3& operator -= (const GVector3& right);
    
    bool operator == (const GVector3& comp) const;

    // geometric operations:
    
    double distanceTo(const GVector3& p) const;
    
    double angleTo(const GVector3& v) const;
    
    GVector3& turnAroundAxis(const GVector3& axis, double angle_rad);
    
    GVector3& projectTo(const GVector3& v);
    
    QString toString() const;
    
    void fromString(const QString& string);

};

}

#endif

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