virtual double findNextBoundary(const RKTrackRep *rep, const M1x7 &state7, double sMax, bool varField=true)=0
Make a step until maxStep or the next boundary is reached.
virtual bool initTrack(double posX, double posY, double posZ, double dirX, double dirY, double dirZ)=0
Initialize the navigator at given position and with given direction.