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/*
  Torus header file
 */

typedef enum Localisation {
		kOutside,
		kSurface,
		kInside
} Localisation;


typedef struct Intersect {
		double x,y,z,dx,dy,dz;
		double R0,R1;
		double phi,deltaphi;
} Intersect ;

void PrintIteration (void);
/**/inline double TorusEquation (double x,double y,double z,double R0,double R1);
inline Localisation Inside (double x,double y,double z,double R0,double R1);
inline double TorusDerivativeX (double x,double y,double z,double R0,double R1);
inline double TorusDerivativeY (double x,double y,double z,double R0,double R1);
inline double TorusDerivativeZ (double x,double y,double z,double R0,double R1);
inline double TorusGuess (double x,double y,double z,double R0,double R1);
/*
double DistanceToTorus (double x,double y,double z,double dx,double dy,double dz
			,double R0,double R1);
*/
double DistanceToTorus (Intersect * Inter);
double Newton (double guess, double Lmin, double Lmax,
			   double x, double y, double z,
			   double dx, double dy, double dz,
			   double Rmax, double Rmin);

extern int BVM_ONLY ;