Gabriele Cosmo
154 lines
5.3 KiB
C++
154 lines
5.3 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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// G4NavigationHistory
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//
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// Class description:
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//
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// Responsible for maintenance of the history of the path taken through
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// the geometrical hierarchy. Principally a utility class for use by the
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// G4Navigator.
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// 25.07.96 - P.Kent Initial version. Services derived from
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// requirements of G4Navigator.
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// ----------------------------------------------------------------------
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#ifndef G4NAVIGATIONHISTORY_HH
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#define G4NAVIGATIONHISTORY_HH
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#include <assert.h>
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#include <vector>
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#include <iostream>
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#include "geomdefs.hh"
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#include "geomwdefs.hh"
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#include "G4AffineTransform.hh"
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#include "G4VPhysicalVolume.hh"
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#include "G4NavigationLevel.hh"
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#include "G4NavigationHistoryPool.hh"
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#include "G4Allocator.hh"
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class G4NavigationHistory
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{
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public: // with description
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friend std::ostream&
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operator << (std::ostream& os, const G4NavigationHistory& h);
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G4NavigationHistory();
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// Constructor: sizes history lists & resets histories.
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~G4NavigationHistory();
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// Destructor.
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G4NavigationHistory(const G4NavigationHistory& h);
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// Copy constructor.
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inline G4NavigationHistory& operator=(const G4NavigationHistory& h);
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// Assignment operator.
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inline void Reset();
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// Resets history. It now does clear most entries.
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// Level 0 is preserved.
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inline void Clear();
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// Clears entries, zeroing transforms, matrices & negating
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// replica history.
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inline void SetFirstEntry(G4VPhysicalVolume* pVol);
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// Setup initial entry in stack: copies through volume transform & matrix.
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// The volume is assumed to be unrotated.
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inline const G4AffineTransform& GetTopTransform() const;
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// Returns topmost transform.
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inline const G4AffineTransform* GetPtrTopTransform() const;
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// Returns pointer to topmost transform.
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inline G4int GetTopReplicaNo() const;
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// Returns topmost replica no record.
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inline EVolume GetTopVolumeType() const;
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// Returns topmost volume type.
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inline G4VPhysicalVolume* GetTopVolume() const;
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// Returns topmost physical volume pointer.
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inline std::size_t GetDepth() const;
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// Returns current history depth.
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inline std::size_t GetMaxDepth() const;
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// Returns current maximum size of history.
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// Note: MaxDepth of 16 mean history entries [0..15] inclusive.
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inline const G4AffineTransform& GetTransform(G4int n) const;
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// Returns specified transformation.
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inline G4int GetReplicaNo(G4int n) const;
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// Returns specified replica no record.
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inline EVolume GetVolumeType(G4int n) const;
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// Returns specified volume type.
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inline G4VPhysicalVolume* GetVolume(G4int n) const;
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// Returns specified physical volume pointer.
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inline void NewLevel(G4VPhysicalVolume* pNewMother,
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EVolume vType = kNormal,
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G4int nReplica = -1);
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// Changes navigation level to that of the new mother.
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inline void BackLevel();
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// Back up one level in history: from mother to grandmother.
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// It does not erase history record of current mother.
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inline void BackLevel(G4int n);
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// Back up specified number of levels in history.
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inline void *operator new(std::size_t);
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// Override "new" for "G4Allocator".
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inline void operator delete(void *aHistory);
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// Override "delete" for "G4Allocator".
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private:
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inline void EnlargeHistory();
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// Enlarge history if required: increase size by kHistoryStride.
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// Note that additional history entries are `dirty' (non zero) apart
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// from the volume history.
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private:
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std::vector<G4NavigationLevel>* fNavHistory;
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// Pointer to the vector of navigation levels.
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std::size_t fStackDepth{0};
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// Depth of stack: effectively depth in geometrical tree.
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};
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#include "G4NavigationHistory.icc"
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#endif
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