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geant4/source/geometry/solids/specific/include/G4PolyconeSide.hh
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2019-12-06 15:12:28 +01:00

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//
// ********************************************************************
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// * *
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// * This code implementation is the result of the scientific and *
// * technical work of the GEANT4 collaboration. *
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// ********************************************************************
//
// G4PolyconeSide
//
// Class description:
//
// Class implmenting a face that represents one conical side
// of a polycone:
//
// G4PolyconeSide( const G4PolyconeSideRZ *prevRZ,
// const G4PolyconeSideRZ *tail,
// const G4PolyconeSideRZ *head,
// const G4PolyconeSideRZ *nextRZ,
// G4double phiStart, G4double deltaPhi,
// G4bool phiIsOpen, G4bool isAllBehind=false )
//
// Values for r1,z1 and r2,z2 should be specified in clockwise
// order in (r,z).
// Author: David C. Williams (davidw@scipp.ucsc.edu)
// --------------------------------------------------------------------
#ifndef G4POLYCONESIDE_HH
#define G4POLYCONESIDE_HH
#include "G4VCSGface.hh"
class G4IntersectingCone;
struct G4PolyconeSideRZ
{
G4double r, z; // start of vector
};
// ----------------------------------------------------------------------------
// MT-specific utility code
#include "G4GeomSplitter.hh"
// The class G4PlSideData is introduced to encapsulate the
// fields of the class G4PolyconeSide that may not be read-only.
//
class G4PlSideData
{
public:
void initialize()
{
fPhix = 0.; fPhiy = 0.; fPhiz = 0.; fPhik = 0.;
}
G4double fPhix=0., fPhiy=0., fPhiz=0., fPhik=0.; // Cached values for phi
};
// The type G4PlSideManager is introduced to
// encapsulate the methods used by both the master thread and
// worker threads to allocate memory space for the fields encapsulated
// by the class G4PlSideData.
//
using G4PlSideManager = G4GeomSplitter<G4PlSideData>;
//
// ----------------------------------------------------------------------------
class G4PolyconeSide : public G4VCSGface
{
public:
G4PolyconeSide( const G4PolyconeSideRZ* prevRZ,
const G4PolyconeSideRZ* tail,
const G4PolyconeSideRZ* head,
const G4PolyconeSideRZ* nextRZ,
G4double phiStart, G4double deltaPhi,
G4bool phiIsOpen, G4bool isAllBehind = false );
virtual ~G4PolyconeSide();
G4PolyconeSide( const G4PolyconeSide& source );
G4PolyconeSide& operator=( const G4PolyconeSide& source );
G4bool Intersect( const G4ThreeVector& p, const G4ThreeVector& v,
G4bool outgoing, G4double surfTolerance,
G4double& distance, G4double &distFromSurface,
G4ThreeVector& normal, G4bool& isAllBehind );
G4double Distance( const G4ThreeVector& p, G4bool outgoing );
EInside Inside( const G4ThreeVector& p, G4double tolerance,
G4double* bestDistance );
G4ThreeVector Normal( const G4ThreeVector& p, G4double* bestDistance );
G4double Extent( const G4ThreeVector axis );
void CalculateExtent( const EAxis axis,
const G4VoxelLimits& voxelLimit,
const G4AffineTransform& tranform,
G4SolidExtentList& extentList );
G4VCSGface* Clone() { return new G4PolyconeSide( *this ); }
G4double SurfaceArea();
G4ThreeVector GetPointOnFace();
public: // without description
G4PolyconeSide(__void__&);
// Fake default constructor for usage restricted to direct object
// persistency for clients requiring preallocation of memory for
// persistifiable objects.
inline G4int GetInstanceID() const { return instanceID; }
// Returns the instance ID.
static const G4PlSideManager& GetSubInstanceManager();
// Returns the private data instance manager.
protected:
G4double DistanceAway( const G4ThreeVector& p, G4bool opposite,
G4double& distOutside2,
G4double* rzNorm = nullptr );
G4double DistanceAway( const G4ThreeVector& p, G4double& distOutside2,
G4double* edgeRZnorm );
G4bool PointOnCone( const G4ThreeVector& hit, G4double normSign,
const G4ThreeVector& p,
const G4ThreeVector& v, G4ThreeVector& normal );
void CopyStuff( const G4PolyconeSide& source );
static void FindLineIntersect( G4double x1, G4double y1,
G4double tx1, G4double ty1,
G4double x2, G4double y2,
G4double tx2, G4double ty2,
G4double& x, G4double& y );
G4double GetPhi( const G4ThreeVector& p );
protected:
G4double r[2], z[2]; // r, z parameters, in specified order
G4double startPhi, // Start phi (0 to 2pi), if phiIsOpen
deltaPhi; // Delta phi (0 to 2pi), if phiIsOpen
G4bool phiIsOpen = false; // True if there is a phi slice
G4bool allBehind = false; // True if the entire solid is "behind" this face
G4IntersectingCone* cone = nullptr; // Our intersecting utility class
G4double rNorm, zNorm; // Normal to surface in r,z space
G4double rS, zS; // Unit vector along surface in r,z space
G4double length; // Length of face in r,z space
G4double prevRS,
prevZS; // Unit vector along previous polyconeSide
G4double nextRS,
nextZS; // Unit vector along next polyconeSide
G4double rNormEdge[2],
zNormEdge[2]; // Normal to edges
G4int ncorners = 0;
G4ThreeVector* corners = nullptr; // The coordinates of the corners
// (if phiIsOpen)
private:
G4double kCarTolerance; // Geometrical surface thickness
G4double fSurfaceArea = 0.0; // Used for surface calculation
G4int instanceID;
// This field is used as instance ID.
G4GEOM_DLL static G4PlSideManager subInstanceManager;
// This field helps to use the class G4PlSideManager introduced above.
};
#endif