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// 
// class G4NormalNavigation
//
// Class description:
//
// Utility for navigation in volumes containing only G4PVPlacement
// daughter volumes.

// History:
// - Created. Paul Kent, Aug 96
// --------------------------------------------------------------------
#ifndef G4NORMALNAVIGATION_HH
#define G4NORMALNAVIGATION_HH

#include <iomanip>

#include "G4VNavigation.hh"
#include "G4NavigationHistory.hh"

#include "G4VPhysicalVolume.hh"
#include "G4LogicalVolume.hh"
#include "G4VSolid.hh"
#include "G4ThreeVector.hh"
#include "G4AuxiliaryNavServices.hh"

class G4NavigationLogger;

class G4NormalNavigation : public G4VNavigation
{
  public:  // with description

    G4NormalNavigation();
      // Constructor

    ~G4NormalNavigation();
      // Destructor

    inline G4bool LevelLocate( G4NavigationHistory &history,
                  const G4VPhysicalVolume *blockedVol,
                  const G4int blockedNum,
                  const G4ThreeVector &globalPoint,
                  const G4ThreeVector* globalDirection,
                  const G4bool pLocatedOnEdge, 
                        G4ThreeVector &localPoint) final;
      // Search positioned volumes in mother at current top level of history
      // for volume containing globalPoint. Do not test the blocked volume.
      // If a containing volume is found, `stack' the new volume and return
      // true, else return false (the point lying in the mother but not any
      // of the daughters). localPoint = global point in local system on entry,
      // point in new system on exit.

    G4double ComputeStep( const G4ThreeVector &localPoint,
                          const G4ThreeVector &localDirection,
                          const G4double currentProposedStepLength,
                                G4double &newSafety,
                                G4NavigationHistory &history,
                                G4bool &validExitNormal,
                                G4ThreeVector &exitNormal,
                                G4bool &exiting,
                                G4bool &entering,
                                G4VPhysicalVolume *(*pBlockedPhysical),
                                G4int &blockedReplicaNo ) final;

    G4double ComputeSafety( const G4ThreeVector &globalpoint,
                            const G4NavigationHistory &history,
                            const G4double pMaxLength=DBL_MAX ) final;

    virtual G4int GetVerboseLevel() const final;
    virtual void  SetVerboseLevel(G4int level) final;
      // Get/Set Verbose(ness) level.
      // [if level>0 && G4VERBOSE, printout can occur]

  private:
    G4NavigationLogger* fLogger;
};

#include "G4NormalNavigation.icc"

#endif
