Gabriele Cosmo
212 lines
9.4 KiB
C++
212 lines
9.4 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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// G4ParameterisedNavigation
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//
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// Class description:
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//
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// Utility for navigation in volumes containing a single G4PVParameterised
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// volume for which voxels for the replicated volumes have been constructed.
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// [Voxels MUST be along one axis only: NOT refined]
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// Author: Paul Kent (CERN), August 1996
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// --------------------------------------------------------------------
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#ifndef G4PARAMETERISEDNAVIGATION_HH
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#define G4PARAMETERISEDNAVIGATION_HH 1
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#include "G4Types.hh"
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#include <vector>
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#include "G4VoxelNavigation.hh"
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#include "G4NavigationHistory.hh"
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#include "G4AffineTransform.hh"
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#include "G4VPhysicalVolume.hh"
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#include "G4VPVParameterisation.hh"
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#include "G4LogicalVolume.hh"
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#include "G4VSolid.hh"
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#include "G4ThreeVector.hh"
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#include "G4BlockingList.hh"
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/**
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* @brief G4ParameterisedNavigation is a concrete utility class for navigation
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* in volumes containing a single G4PVParameterised volume for which voxels for
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* the replicated volumes have been constructed.
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* @note Voxels MUST be along one axis only: NOT refined.
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*/
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class G4ParameterisedNavigation : public G4VoxelNavigation
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{
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public:
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/**
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* Constructor and default Destructor.
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*/
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G4ParameterisedNavigation();
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~G4ParameterisedNavigation() override;
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/**
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* Locates voxel node based on given point. If no parameterisation axis
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* is specified, adopt default location strategy as for placements.
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* @param[in] pHead Pointer to header of nodes to look through.
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* @param[in] localPoint Local point
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* @returns Pointer to the node where the given point is located.
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*/
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inline G4SmartVoxelNode* ParamVoxelLocate( G4SmartVoxelHeader* pHead,
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const G4ThreeVector& localPoint );
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/**
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* Searches positioned volumes in mother at current top level of @p history
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* for volume containing @p globalPoint. Do not test against @p blockedVol.
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* If a containing volume is found, push it onto navigation history state.
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* @param[in,out] history Navigation history.
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* @param[in,out] blockedVol Blocked volume to be ignored in queries.
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* @param[in,out] blockedNum Copy number for blocked replica volumes.
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* @param[in,out] globalPoint Point in global coordinates system.
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* @param[in,out] globalDirection Global direction vector.
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* @param[in] pLocatedOnEdge Flag specifying if point is located on edge.
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* @param[in,out] localPoint Point in local coordinates system.
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* @returns Whether a containing volume has been found.
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*/
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G4bool LevelLocate( G4NavigationHistory& history,
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const G4VPhysicalVolume* blockedVol,
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const G4int blockedNum,
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const G4ThreeVector& globalPoint,
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const G4ThreeVector* globalDirection,
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const G4bool pLocatedOnEdge,
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G4ThreeVector& localPoint ) override;
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/**
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* Computes the length of a step to the next boundary.
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* Does not test against @p pBlockedPhysical. Identifies the next candidate
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* volume (if a daughter of the current volume), and returns it in:
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* pBlockedPhysical, blockedReplicaNo.
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* @param[in] localPoint Local point.
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* @param[in] localDirection Local direction vector.
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* @param[in] currentProposedStepLength Current proposed step length.
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* @param[in,out] newSafety New safety.
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* @param[in,out] history Navigation history.
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* @param[in,out] validExitNormal Flag to indicate whether exit normal is
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* valid or not.
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* @param[in,out] exitNormal Exit normal.
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* @param[in,out] exiting Flag to indicate whether exiting a volume.
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* @param[in,out] entering Flag to indicate whether entering a volume.
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* @param[in,out] pBlockedPhysical Blocked physical volume that should be
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* ignored in queries.
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* @param[in,out] blockedReplicaNo Copy number for blocked replica volumes.
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* @returns Length from current point to next boundary surface along
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* @p localDirection.
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*/
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G4double ComputeStep( const G4ThreeVector& localPoint,
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const G4ThreeVector& localDirection,
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const G4double currentProposedStepLength,
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G4double& newSafety,
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G4NavigationHistory& history,
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G4bool& validExitNormal,
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G4ThreeVector& exitNormal,
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G4bool& exiting,
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G4bool& entering,
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G4VPhysicalVolume *(*pBlockedPhysical),
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G4int& blockedReplicaNo ) override;
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/**
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* Calculates the isotropic distance to the nearest boundary from the
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* specified point in the local coordinate system.
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* The localpoint utilised must be within the current volume.
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* @param[in] localPoint Local point.
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* @param[in] history Navigation history.
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* @param[in] pMaxLength Maximum step length beyond which volumes
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* need not be checked.
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* @returns Length from current point to closest surface.
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*/
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G4double ComputeSafety( const G4ThreeVector& localPoint,
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const G4NavigationHistory& history,
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const G4double pProposedMaxLength=DBL_MAX ) override;
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/**
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* Updates internal navigation state to take into account that location
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* has been moved, but remains within the @p motherPhysical volume.
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* @param[in] motherPhysical Current physical volume.
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* @param[in] localPoint Local point.
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*/
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void RelocateWithinVolume( G4VPhysicalVolume* motherPhysical,
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const G4ThreeVector& localPoint ) override;
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private:
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/**
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* Computes safety from specified point to voxel boundaries using already
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* located point.
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* @param[in] localPoint Local point.
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* @param[in] pAxis Axis of parameterisation.
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* @returns Safety length from current point to voxel boundary.
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*/
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G4double ComputeVoxelSafety( const G4ThreeVector& localPoint,
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const EAxis pAxis ) const;
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/**
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* Finds the next voxel from the current voxel and point in the specified
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* direction.
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* @param[in] localPoint Local point.
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* @param[in] localDirection Direction along which compute the distance.
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* @param[in] currentStep Current step size.
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* @param[in] pAxis Axis of parameterisation.
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* @returns false if all voxels considered
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* [current Step ends inside same voxel or leaves all voxels]
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* true otherwise
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* [the information on the next voxel is saved].
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*/
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G4bool LocateNextVoxel( const G4ThreeVector& localPoint,
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const G4ThreeVector& localDirection,
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const G4double currentStep,
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const EAxis pAxis );
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/**
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* Calls virtual 'Compute' methods, and copies information if nested.
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* Method necessary to resolve cases with nested parameterisations.
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* @param[in] num Copy number of parameterisation.
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* @param[in] apparentPhys Potentially a PhysV or PhysT.
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* @param[in] curParam Pointer to the parameterisation algorithm.
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* @returns A pointer to the computed parameterised solid.
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*/
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inline G4VSolid* IdentifyAndPlaceSolid( G4int num,
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G4VPhysicalVolume* apparentPhys,
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G4VPVParameterisation* curParam );
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private:
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// Voxel Stack information (for 1D optimisation only)
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//
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EAxis fVoxelAxis = kUndefined;
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G4int fVoxelNoSlices = 0;
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G4double fVoxelSliceWidth = 0.0;
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std::size_t fVoxelNodeNo = 0;
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G4SmartVoxelHeader* fVoxelHeader = nullptr;
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};
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#include "G4ParameterisedNavigation.icc"
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#endif
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