Gabriele Cosmo
141 lines
4.5 KiB
C++
141 lines
4.5 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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//
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// $Id: G4SafetyHelper.hh,v 1.7 2007/05/02 15:32:13 japost Exp $
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// GEANT4 tag $Name: geant4-09-01 $
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//
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//
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// class G4SafetyHelper
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//
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// Class description:
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//
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// This class is a helper for physics processes which require
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// knowledge of the safety, and the step size for the 'mass' geometry
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// First version: J. Apostolakis, July 5th, 2006
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// Modified:
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// 10.04.07 V.Ivanchenko Use unique G4SafetyHelper
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// --------------------------------------------------------------------
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#ifndef G4SAFETYHELPER_HH
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#define G4SAFETYHELPER_HH 1
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#include <vector>
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#include "G4Types.hh"
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#include "G4ThreeVector.hh"
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#include "G4Navigator.hh"
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class G4PathFinder;
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class G4SafetyHelper
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{
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public: // with description
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G4SafetyHelper();
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~G4SafetyHelper();
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//
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// Constructor and destructor
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G4double CheckNextStep( const G4ThreeVector& position,
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const G4ThreeVector& direction,
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const G4double currentMaxStep,
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G4double& newSafety );
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//
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// Return linear step for mass geometry
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G4double ComputeSafety( const G4ThreeVector& pGlobalPoint );
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//
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// Return safety for all geometries
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void Locate(const G4ThreeVector& pGlobalPoint,
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const G4ThreeVector& direction);
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//
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// Locate the point for all geometries
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void ReLocateWithinVolume(const G4ThreeVector& pGlobalPoint );
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//
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// Relocate the point in the volume of interest
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inline void EnableParallelNavigation(G4bool parallel);
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//
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// To have parallel worlds considered, must be true.
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// Alternative is to use single (mass) Navigator directly
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void InitialiseNavigator();
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//
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// Check for new navigator for tracking, and reinitialise pointer
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inline G4VPhysicalVolume* GetWorldVolume();
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inline void SetCurrentSafety(G4double val, const G4ThreeVector& pos);
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public: // without description
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void InitialiseHelper();
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private:
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G4PathFinder* fpPathFinder;
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G4Navigator* fpMassNavigator;
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G4int fMassNavigatorId;
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G4bool fUseParallelGeometries;
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// Flag whether to use PathFinder or single (mass) Navigator directly
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G4bool fFirstCall;
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// Flag of first call
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// State used during tracking -- for optimisation
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G4ThreeVector fLastSafetyPosition;
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G4double fLastSafety;
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const G4double fRecomputeFactor;
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// parameter for further optimisation:
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// if ( move < fact*safety ) do fast recomputation of safety
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// End State (tracking)
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};
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// Inline definitions
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inline
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void G4SafetyHelper::EnableParallelNavigation(G4bool parallel)
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{
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fUseParallelGeometries = parallel;
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}
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inline
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G4VPhysicalVolume* G4SafetyHelper::GetWorldVolume()
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{
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return fpMassNavigator->GetWorldVolume();
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}
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inline
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void G4SafetyHelper::SetCurrentSafety(G4double val, const G4ThreeVector& pos)
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{
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fLastSafety = val;
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fLastSafetyPosition = pos;
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}
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#endif
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