Gabriele Cosmo
245 lines
9.2 KiB
C++
245 lines
9.2 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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//
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//
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// --------------------------------------------------------------------
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// GEANT 4 class header file
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//
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//
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// G4PolyhedraSide
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//
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// Class description:
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//
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// Class implementing a face that represents one segmented side
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// of a polyhedra:
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//
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// G4PolyhedraSide( const G4PolyhedraSideRZ *prevRZ,
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// const G4PolyhedraSideRZ *tail,
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// const G4PolyhedraSideRZ *head,
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// const G4PolyhedraSideRZ *nextRZ,
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// G4int numSide,
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// G4double phiStart, G4double phiTotal,
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// G4bool phiIsOpen, G4bool isAllBehind=false )
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//
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// Values for r1,z1 and r2,z2 should be specified in clockwise
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// order in (r,z).
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// Author:
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// David C. Williams (davidw@scipp.ucsc.edu)
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// --------------------------------------------------------------------
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#ifndef G4PolyhedraSide_hh
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#define G4PolyhedraSide_hh
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#include "G4VCSGface.hh"
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class G4IntersectingCone;
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struct G4PolyhedraSideRZ
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{
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G4double r, z; // start of vector
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};
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// ----------------------------------------------------------------------------
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// MT-specific utility code
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#include "G4GeomSplitter.hh"
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// The class G4PhSideData is introduced to encapsulate the
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// fields of the class G4PolyhedraSide that may not be read-only.
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//
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class G4PhSideData
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{
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public:
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void initialize()
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{
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fPhi.first = G4ThreeVector(0,0,0);
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fPhi.second= 0.0;
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}
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std::pair<G4ThreeVector, G4double> fPhi; // Cached value for phi
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};
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// The type G4PhSideManager is introduced to encapsulate the methods used
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// by both the master thread and worker threads to allocate memory space
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// for the fields encapsulated by the class G4PhSideData.
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//
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typedef G4GeomSplitter<G4PhSideData> G4PhSideManager;
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//
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// ----------------------------------------------------------------------------
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class G4PolyhedraSide : public G4VCSGface
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{
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public: // with description
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G4PolyhedraSide( const G4PolyhedraSideRZ *prevRZ,
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const G4PolyhedraSideRZ *tail,
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const G4PolyhedraSideRZ *head,
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const G4PolyhedraSideRZ *nextRZ,
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G4int numSide,
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G4double phiStart, G4double phiTotal,
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G4bool phiIsOpen, G4bool isAllBehind=false );
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virtual ~G4PolyhedraSide();
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G4PolyhedraSide( const G4PolyhedraSide &source );
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G4PolyhedraSide& operator=( const G4PolyhedraSide &source );
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G4bool Intersect( const G4ThreeVector &p, const G4ThreeVector &v,
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G4bool outgoing, G4double surfTolerance,
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G4double &distance, G4double &distFromSurface,
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G4ThreeVector &normal, G4bool &allBehind );
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G4double Distance( const G4ThreeVector &p, G4bool outgoing );
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EInside Inside( const G4ThreeVector &p, G4double tolerance,
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G4double *bestDistance );
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G4ThreeVector Normal( const G4ThreeVector &p, G4double *bestDistance );
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G4double Extent( const G4ThreeVector axis );
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void CalculateExtent( const EAxis axis,
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const G4VoxelLimits &voxelLimit,
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const G4AffineTransform &tranform,
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G4SolidExtentList &extentList );
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G4VCSGface *Clone() { return new G4PolyhedraSide( *this ); }
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public: // without description
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// Methods used for GetPointOnSurface()
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G4double SurfaceTriangle( G4ThreeVector p1,
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G4ThreeVector p2,
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G4ThreeVector p3,
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G4ThreeVector *p4 );
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G4ThreeVector GetPointOnPlane( G4ThreeVector p0, G4ThreeVector p1,
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G4ThreeVector p2, G4ThreeVector p3,
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G4double *Area );
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G4double SurfaceArea();
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G4ThreeVector GetPointOnFace();
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public: // without description
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G4PolyhedraSide(__void__&);
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// Fake default constructor for usage restricted to direct object
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// persistency for clients requiring preallocation of memory for
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// persistifiable objects.
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inline G4int GetInstanceID() const { return instanceID; }
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// Returns the instance ID.
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static const G4PhSideManager& GetSubInstanceManager();
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// Returns the private data instance manager.
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//
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// A couple internal data structures
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//
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struct sG4PolyhedraSideVec; // Secret recipe for allowing
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friend struct sG4PolyhedraSideVec; // protected nested structures
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typedef struct sG4PolyhedraSideEdge
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{
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G4ThreeVector normal; // Unit normal to this edge
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G4ThreeVector corner[2]; // The two corners of this phi edge
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G4ThreeVector cornNorm[2]; // The normals of these corners
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} G4PolyhedraSideEdge;
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typedef struct sG4PolyhedraSideVec
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{
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G4ThreeVector normal, // Normal (point out of the shape)
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center, // Point in center of side
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surfPhi, // Unit vector on surface pointing along phi
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surfRZ; // Unit vector on surface pointing along R/Z
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G4PolyhedraSideEdge *edges[2]; // The phi boundary edges to this side
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// [0]=low phi [1]=high phi
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G4ThreeVector edgeNorm[2]; // RZ edge normals [i] at {r[i],z[i]}
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} G4PolyhedraSideVec;
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protected:
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G4bool IntersectSidePlane( const G4ThreeVector &p, const G4ThreeVector &v,
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const G4PolyhedraSideVec& vec,
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G4double normSign,
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G4double surfTolerance,
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G4double &distance,
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G4double &distFromSurface );
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G4int LineHitsSegments( const G4ThreeVector &p,
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const G4ThreeVector &v,
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G4int *i1, G4int *i2 );
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G4int ClosestPhiSegment( G4double phi );
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G4int PhiSegment( G4double phi );
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G4double GetPhi( const G4ThreeVector& p );
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G4double DistanceToOneSide( const G4ThreeVector &p,
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const G4PolyhedraSideVec &vec,
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G4double *normDist );
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G4double DistanceAway( const G4ThreeVector &p,
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const G4PolyhedraSideVec &vec,
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G4double *normDist );
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void CopyStuff( const G4PolyhedraSide &source );
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protected:
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G4int numSide; // Number sides
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G4double r[2], z[2]; // r, z parameters, in specified order
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G4double startPhi, // Start phi (0 to 2pi), if phiIsOpen
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deltaPhi, // Delta phi (0 to 2pi), if phiIsOpen
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endPhi; // End phi (>startPhi), if phiIsOpen
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G4bool phiIsOpen; // True if there is a phi slice
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G4bool allBehind; // True if the entire solid is "behind" this face
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G4IntersectingCone *cone; // Our intersecting cone
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G4PolyhedraSideVec *vecs; // Vector set for each facet of our face
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G4PolyhedraSideEdge *edges; // The edges belong to vecs
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G4double lenRZ, // RZ length of each side
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lenPhi[2]; // Phi dimensions of each side
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G4double edgeNorm; // Normal in RZ/Phi space to each side
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private:
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G4double kCarTolerance; // Geometrical surface thickness
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G4double fSurfaceArea; // Surface Area
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G4int instanceID;
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// This field is used as instance ID.
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G4GEOM_DLL static G4PhSideManager subInstanceManager;
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// This field helps to use the class G4PhSideManager introduced above.
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};
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#endif
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