kerr.h

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#ifndef __KERR_H__
#define __KERR_H__

#include "geometry.h"
#include "kerr_coords.h"

class KerrManifold : public Manifold
{
    double M, a;
public:
    KerrManifold(double, double);
    ~KerrManifold();
    
    double getMass();
    double getAngMomentum();
    void setMass(double _M);
    void setAngMomentum(double _a);
    
    int recommendCoordSystem(Point);
};

class KerrEFMetric : public Metric
{
    KerrManifold* m;
protected:
    double _g(int, int, Point);
    double _invg(int, int, Point);
    double _christoffel(int, int, int, Point);
    
public:
    enum { coordU = 0, coordR = 1, coordTheta = 2, coordPhi = 3 };
    
    KerrEFMetric(int cS, KerrManifold* _m);
    ~KerrEFMetric();
};

class KerrNearPoleMetric : public Metric
{
    KerrManifold* m;
protected:
    double _g(int, int, Point);
    double _invg(int, int, Point);
    double _christoffel(int, int, int, Point);
    
public:
    enum { coordU = 0, coordR = 1, coordX = 2, coordY = 3 };
    
    KerrNearPoleMetric(int cS, KerrManifold* _m);
    ~KerrNearPoleMetric();
};

#endif