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IgSoIdealTrack.h

Go to the documentation of this file.

#ifndef IG_OPEN_INVENTOR_IG_SO_IDEAL_TRACK_H
# define IG_OPEN_INVENTOR_IG_SO_IDEAL_TRACK_H

//<<<<<< INCLUDES                                                       >>>>>>

# include "Iguana/Inventor/interface/IgSoShapeKit.h"
# include <Inventor/fields/SoSFVec3f.h>
# include <Inventor/fields/SoSFFloat.h>
# include <Inventor/fields/SoSFString.h>
# ifdef WIN32
#  include <SoWinLeaveScope.h>
# endif

//<<<<<< PUBLIC DEFINES                                                 >>>>>>
//<<<<<< PUBLIC CONSTANTS                                               >>>>>>
//<<<<<< PUBLIC TYPES                                                   >>>>>>

class IgParticleChar;
class SbVec2f;

//<<<<<< PUBLIC VARIABLES                                               >>>>>>
//<<<<<< PUBLIC FUNCTIONS                                               >>>>>>
//<<<<<< CLASS DECLARATIONS                                             >>>>>>

class IG_OPEN_INVENTOR_API IgSoIdealTrack : public IgSoShapeKit
{
    SO_KIT_HEADER (IgSoIdealTrack);
    SO_KIT_CATALOG_ENTRY_HEADER (material);
    SO_KIT_CATALOG_ENTRY_HEADER (style);
    SO_KIT_CATALOG_ENTRY_HEADER (complexity);
    SO_KIT_CATALOG_ENTRY_HEADER (points);
    SO_KIT_CATALOG_ENTRY_HEADER (curve);
    SO_KIT_CATALOG_ENTRY_HEADER (debugStyle);
    SO_KIT_CATALOG_ENTRY_HEADER (debugPoints);

public:
    IgSoIdealTrack (void);
    static void initClass (void);

    // Track properties
    SoSFFloat   phi;            //< Dip angle of helix  wrt z axis
    SoSFFloat   radius;         //< Radius of curvature
    SoSFFloat   zeta;           //< Radius/tan (theta)=pz/ptot, theta being the dip angle; pz/pt for zero b-field
    SoSFVec3f   vertex;         //< Vertex position
    SoSFFloat   tstart;         //< time at beginning of track (not necessarily visible)    
    SoSFFloat   tend;           //< time at end of track (not necessarily visible)
    SoSFString  particleType;   //< Name follow IgParticleChar conventions

    // Display parameters
    SoSFFloat   t0;             //< time at beginning of visible track
    SoSFFloat   dt;             //< timespan of visible track


    // Helper methods to initialise track properties
    void                initialise (double *vx, double *vy, double *vz, 
                                    double *px, double *py, double *pz, 
                                    float *t0, IgParticleChar *pc);
    void                initialise (double vx, double vy, double vz, 
                                    double px, double py, double pz, 
                                    float t0, IgParticleChar *pc);
    void                initialise (double vx, double vy, double vz, 
                                    double px, double py, double pz, 
                                    float t0, int pid);
    // methods to initialise environmental variables
    static void         setBField (float val);  //< set the value of the global B field
    static void         setRMax (float val);    //< set the radius of the visible region
    static void         setZMax (float val);    //< set the z extent of the visible region
        // and return them
        static float    getBField (void);
        static float    getRMax (void);
        static float    getZMax (void);

    // convenience methods to get physics parameters
    float               ptot (void) const;
    float               pt (void) const;

protected:
    virtual void        refresh (void);
    virtual            ~IgSoIdealTrack (void);
    
protected:
    void                initEndPts (void);
    float               timeToAngle (float time);
    float               angleToTime (float angle);
    float               zToTime (float z);
    float               timeToZ (float time);
    SbVec2f             timeToXY (float time);

    IgParticleChar      *m_particleChar;
    float               m_ptot;   //total momentum
    float               m_pt;     //transverse momentum
    float               m_charge;
private:
    // Environment parameters
    static float        bfield;         //< constant bfield in tesla
    static float        rmax;           //< max radius in central tracker
    static float        zmax;           //< max z extent

};

//<<<<<< INLINE PUBLIC FUNCTIONS                                        >>>>>>
inline void IgSoIdealTrack::setBField (float val) { bfield = val; }
inline void IgSoIdealTrack::setRMax   (float val) { rmax = val; }
inline void IgSoIdealTrack::setZMax   (float val) { zmax = val; }
inline float IgSoIdealTrack::ptot      (void) const { return m_ptot; }
inline float IgSoIdealTrack::pt       (void) const { return m_pt; }
inline float IgSoIdealTrack::getBField (void) { return bfield; }
inline float IgSoIdealTrack::getRMax (void) { return rmax; }
inline float IgSoIdealTrack::getZMax (void) { return zmax; }
//<<<<<< INLINE MEMBER FUNCTIONS                                        >>>>>>

# ifdef WIN32
#  include <SoWinEnterScope.h>
# endif
#endif // IG_OPEN_INVENTOR_IG_SO_IDEAL_TRACK_H

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