GPlane.h

/***************************************************************************
 *   Copyright (C) 2005 by the G System Team                               *
 *   http://www.g-system.at                                                *
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#ifndef GPLANEH
#define GPLANEH

#include "GMatrix44.h"
#include "GVector3.h"


#include <cmath>

class QString;

namespace GCS
{

class GPlane
{
  public:
  
    union
    {
        struct
        {
            double a; // Variables for the plane equation
            double b;
            double c;
            double d;
        };

//         struct
//         {
//             GVector3 n; // Normalvector
//             double d; // Distance
//         };

        double v[4];
    };

    GPlane();
   
    GPlane(const double a, const double b, const double c, const double d);
    
    GPlane(const double* value);
    
    GPlane(const GCS::GVector3& n, double d);
    
    
    GPlane(const GCS::GVector3& p, const GCS::GVector3& n);
    
    GPlane(const GCS::GVector3& v1, const GCS::GVector3& v2, const GCS::GVector3& v3);
    
    
    GPlane& normalize();
    
    
    GPlane& transform(const GMatrix44& m);
    
    
    double PlanePointDistance(const GCS::GVector3& point) const;
    
    
    operator double* ();

    GPlane operator = (const GPlane& p);
    
    bool operator == (const GPlane& p) const;
    
    bool operator != (const GPlane& p) const;


};

};

#endif

---