Gabriele Cosmo
402 lines
17 KiB
C++
402 lines
17 KiB
C++
//
|
||
// ********************************************************************
|
||
// * License and Disclaimer *
|
||
// * *
|
||
// * The Geant4 software is copyright of the Copyright Holders of *
|
||
// * the Geant4 Collaboration. It is provided under the terms and *
|
||
// * conditions of the Geant4 Software License, included in the file *
|
||
// * LICENSE and available at http://cern.ch/geant4/license . These *
|
||
// * include a list of copyright holders. *
|
||
// * *
|
||
// * Neither the authors of this software system, nor their employing *
|
||
// * institutes,nor the agencies providing financial support for this *
|
||
// * work make any representation or warranty, express or implied, *
|
||
// * regarding this software system or assume any liability for its *
|
||
// * use. Please see the license in the file LICENSE and URL above *
|
||
// * for the full disclaimer and the limitation of liability. *
|
||
// * *
|
||
// * This code implementation is the result of the scientific and *
|
||
// * technical work of the GEANT4 collaboration. *
|
||
// * By using, copying, modifying or distributing the software (or *
|
||
// * any work based on the software) you agree to acknowledge its *
|
||
// * use in resulting scientific publications, and indicate your *
|
||
// * acceptance of all terms of the Geant4 Software license. *
|
||
// ********************************************************************
|
||
//
|
||
// G4TwistedTubs
|
||
//
|
||
// Class description:
|
||
//
|
||
// G4TwistedTubs is a sector of a twisted hollow cylinder.
|
||
// A twisted cylinder which is placed along with z-axis and is
|
||
// separated into phi-segments should become a hyperboloid, and
|
||
// its each segmented piece should be tilted with a stereo angle.
|
||
// G4TwistedTubs is a G4VSolid.
|
||
//
|
||
// Details of the implementation: "Development of a Geant4 solid
|
||
// for stereo mini-jet cells in a cylindrical drift chamber",
|
||
// Computer Physics Communications 153 (2003) pp.373–391
|
||
|
||
// 01-Aug-2002 - Kotoyo Hoshina (hoshina@hepburn.s.chiba-u.ac.jp), created.
|
||
// 13-Nov-2003 - O.Link (Oliver.Link@cern.ch), Integration in Geant4
|
||
// from original version in Jupiter-2.5.02 application.
|
||
// --------------------------------------------------------------------
|
||
#ifndef G4TWISTEDTUBS_HH
|
||
#define G4TWISTEDTUBS_HH
|
||
|
||
#include "G4VSolid.hh"
|
||
#include "G4TwistTubsFlatSide.hh"
|
||
#include "G4TwistTubsSide.hh"
|
||
#include "G4TwistTubsHypeSide.hh"
|
||
|
||
class G4SolidExtentList;
|
||
class G4ClippablePolygon;
|
||
|
||
class G4TwistedTubs : public G4VSolid
|
||
{
|
||
public:
|
||
|
||
G4TwistedTubs(const G4String& pname, // Name of instance
|
||
G4double twistedangle, // Twisted angle
|
||
G4double endinnerrad, // Inner radius at endcap
|
||
G4double endouterrad, // Outer radius at endcap
|
||
G4double halfzlen, // half z length
|
||
G4double dphi); // Phi angle of a segment
|
||
|
||
G4TwistedTubs(const G4String& pname, // Name of instance
|
||
G4double twistedangle, // Stereo angle
|
||
G4double endinnerrad, // Inner radius at endcap
|
||
G4double endouterrad, // Outer radius at endcap
|
||
G4double halfzlen, // half z length
|
||
G4int nseg, // Number of segments in totalPhi
|
||
G4double totphi); // Total angle of all segments
|
||
|
||
G4TwistedTubs(const G4String& pname, // Name of instance
|
||
G4double twistedangle, // Twisted angle
|
||
G4double innerrad, // Inner radius at z=0
|
||
G4double outerrad, // Outer radius at z=0
|
||
G4double negativeEndz, // -ve z endplate
|
||
G4double positiveEndz, // +ve z endplate
|
||
G4double dphi); // Phi angle of a segment
|
||
|
||
G4TwistedTubs(const G4String& pname, // Name of instance
|
||
G4double twistedangle, // Stereo angle
|
||
G4double innerrad, // Inner radius at z=0
|
||
G4double outerrad, // Outer radius at z=0
|
||
G4double negativeEndz, // -ve z endplate
|
||
G4double positiveEndz, // +ve z endplate
|
||
G4int nseg, // Number of segments in totalPhi
|
||
G4double totphi); // Total angle of all segments
|
||
|
||
~G4TwistedTubs() override;
|
||
|
||
void ComputeDimensions(G4VPVParameterisation* /* p */ ,
|
||
const G4int /* n */ ,
|
||
const G4VPhysicalVolume* /* prep */ ) override;
|
||
|
||
void BoundingLimits(G4ThreeVector& pMin, G4ThreeVector& pMax) const override;
|
||
|
||
G4bool CalculateExtent(const EAxis pAxis,
|
||
const G4VoxelLimits& pVoxelLimit,
|
||
const G4AffineTransform& pTransform,
|
||
G4double& pMin,
|
||
G4double& pMax ) const override;
|
||
|
||
G4double DistanceToIn (const G4ThreeVector& p,
|
||
const G4ThreeVector& v ) const override;
|
||
|
||
G4double DistanceToIn (const G4ThreeVector& p ) const override;
|
||
|
||
G4double DistanceToOut(const G4ThreeVector& p,
|
||
const G4ThreeVector& v,
|
||
const G4bool calcnorm = false,
|
||
G4bool* validnorm = nullptr,
|
||
G4ThreeVector* n = nullptr ) const override;
|
||
|
||
G4double DistanceToOut(const G4ThreeVector& p) const override;
|
||
|
||
EInside Inside (const G4ThreeVector& p) const override;
|
||
|
||
G4ThreeVector SurfaceNormal(const G4ThreeVector& p) const override;
|
||
|
||
void DescribeYourselfTo (G4VGraphicsScene& scene) const override;
|
||
G4Polyhedron* CreatePolyhedron () const override;
|
||
G4Polyhedron* GetPolyhedron () const override;
|
||
|
||
std::ostream &StreamInfo(std::ostream& os) const override;
|
||
|
||
// accessors
|
||
|
||
inline G4double GetDPhi () const { return fDPhi ; }
|
||
inline G4double GetPhiTwist () const { return fPhiTwist ; }
|
||
inline G4double GetInnerRadius () const { return fInnerRadius; }
|
||
inline G4double GetOuterRadius () const { return fOuterRadius; }
|
||
inline G4double GetInnerStereo () const { return fInnerStereo; }
|
||
inline G4double GetOuterStereo () const { return fOuterStereo; }
|
||
inline G4double GetZHalfLength () const { return fZHalfLength; }
|
||
inline G4double GetKappa () const { return fKappa ; }
|
||
|
||
inline G4double GetTanInnerStereo () const { return fTanInnerStereo ; }
|
||
inline G4double GetTanInnerStereo2() const { return fTanInnerStereo2 ; }
|
||
inline G4double GetTanOuterStereo () const { return fTanOuterStereo ; }
|
||
inline G4double GetTanOuterStereo2() const { return fTanOuterStereo2 ; }
|
||
|
||
inline G4double GetEndZ (G4int i) const { return fEndZ[i] ; }
|
||
inline G4double GetEndPhi (G4int i) const { return fEndPhi[i]; }
|
||
inline G4double GetEndInnerRadius (G4int i) const
|
||
{ return fEndInnerRadius[i]; }
|
||
inline G4double GetEndOuterRadius (G4int i) const
|
||
{ return fEndOuterRadius[i]; }
|
||
inline G4double GetEndInnerRadius () const
|
||
{ return (fEndInnerRadius[0] > fEndInnerRadius[1] ?
|
||
fEndInnerRadius[0] : fEndInnerRadius[1]); }
|
||
inline G4double GetEndOuterRadius () const
|
||
{ return (fEndOuterRadius[0] > fEndOuterRadius[1] ?
|
||
fEndOuterRadius[0] : fEndOuterRadius[1]); }
|
||
|
||
G4VisExtent GetExtent () const override;
|
||
G4GeometryType GetEntityType() const override;
|
||
G4VSolid* Clone() const override;
|
||
|
||
G4double GetCubicVolume() override;
|
||
// Returns an estimation of the geometrical cubic volume of the
|
||
// solid. Caches the computed value once computed the first time.
|
||
G4double GetSurfaceArea() override;
|
||
// Returns the geometrical surface area of the solid.
|
||
// Caches the computed value once computed the first time.
|
||
|
||
G4ThreeVector GetPointOnSurface() const override ;
|
||
|
||
G4TwistedTubs(__void__&);
|
||
// Fake default constructor for usage restricted to direct object
|
||
// persistency for clients requiring preallocation of memory for
|
||
// persistifiable objects.
|
||
|
||
G4TwistedTubs(const G4TwistedTubs& rhs);
|
||
G4TwistedTubs& operator=(const G4TwistedTubs& rhs);
|
||
// Copy constructor and assignment operator.
|
||
|
||
#ifdef G4TWISTDEBUG
|
||
G4VTwistSurface* GetOuterHype() const { return fOuterHype; }
|
||
#endif
|
||
|
||
private:
|
||
|
||
inline void SetFields(G4double phitwist, G4double innerrad,
|
||
G4double outerrad,
|
||
G4double negativeEndz, G4double positiveEndz);
|
||
void CreateSurfaces();
|
||
G4double GetLateralArea(G4double a, G4double r, G4double z) const;
|
||
G4double GetPhiCutArea(G4double a, G4double r, G4double z) const;
|
||
|
||
private:
|
||
|
||
G4double fPhiTwist; // Twist angle from -fZHalfLength to fZHalfLength
|
||
G4double fInnerRadius; // Inner-hype radius at z=0
|
||
G4double fOuterRadius; // Outer-hype radius at z=0
|
||
G4double fEndZ[2]; // z at endcaps, [0] = -ve z, [1] = +ve z
|
||
G4double fDPhi; // Phi-width of a segment fDPhi > 0
|
||
G4double fZHalfLength; // Half length along z-axis
|
||
|
||
G4double fInnerStereo; // Inner-hype stereo angle
|
||
G4double fOuterStereo; // Outer-hype stereo angle
|
||
G4double fTanInnerStereo; // std::tan(innerStereoAngle)
|
||
G4double fTanOuterStereo; // std::tan(outerStereoAngle)
|
||
G4double fKappa; // std::tan(fPhiTwist/2)/fZHalfLen;
|
||
G4double fEndInnerRadius[2]; // Inner-hype radii endcaps [0] -ve z, [1] +ve z
|
||
G4double fEndOuterRadius[2]; // Outer-hype radii endcaps [0] -ve z, [1] +ve z
|
||
G4double fEndPhi[2]; // Phi endcaps, [0] = -ve z, [1] = +ve z
|
||
|
||
G4double fInnerRadius2; // fInnerRadius * fInnerRadius
|
||
G4double fOuterRadius2; // fOuterRadius * fOuterRadius
|
||
G4double fTanInnerStereo2; // fInnerRadius * fInnerRadius
|
||
G4double fTanOuterStereo2; // fInnerRadius * fInnerRadius
|
||
G4double fEndZ2[2]; // fEndZ * fEndZ
|
||
|
||
G4VTwistSurface* fLowerEndcap; // Surface of -ve z
|
||
G4VTwistSurface* fUpperEndcap; // Surface of +ve z
|
||
G4VTwistSurface* fLatterTwisted; // Surface of -ve phi
|
||
G4VTwistSurface* fFormerTwisted; // Surface of +ve phi
|
||
G4VTwistSurface* fInnerHype; // Surface of -ve r
|
||
G4VTwistSurface* fOuterHype; // Surface of +ve r
|
||
|
||
G4double fCubicVolume = 0.0; // Cached value for cubic volume
|
||
G4double fSurfaceArea = 0.0; // Cached value for surface area
|
||
|
||
mutable G4bool fRebuildPolyhedron = false;
|
||
mutable G4Polyhedron* fpPolyhedron = nullptr; // polyhedron for vis
|
||
|
||
class LastState // last Inside result
|
||
{
|
||
public:
|
||
LastState()
|
||
{
|
||
p.set(kInfinity,kInfinity,kInfinity);
|
||
inside = kOutside;
|
||
}
|
||
~LastState()= default;
|
||
LastState(const LastState& r) = default;
|
||
LastState& operator=(const LastState& r)
|
||
{
|
||
if (this == &r) { return *this; }
|
||
p = r.p; inside = r.inside;
|
||
return *this;
|
||
}
|
||
public:
|
||
G4ThreeVector p;
|
||
EInside inside;
|
||
};
|
||
|
||
class LastVector // last SurfaceNormal result
|
||
{
|
||
public:
|
||
LastVector()
|
||
{
|
||
p.set(kInfinity,kInfinity,kInfinity);
|
||
vec.set(kInfinity,kInfinity,kInfinity);
|
||
surface = new G4VTwistSurface*[1];
|
||
}
|
||
~LastVector()
|
||
{
|
||
delete [] surface;
|
||
}
|
||
LastVector(const LastVector& r) : p(r.p), vec(r.vec)
|
||
{
|
||
surface = new G4VTwistSurface*[1];
|
||
surface[0] = r.surface[0];
|
||
}
|
||
LastVector& operator=(const LastVector& r)
|
||
{
|
||
if (&r == this) { return *this; }
|
||
p = r.p; vec = r.vec;
|
||
delete [] surface; surface = new G4VTwistSurface*[1];
|
||
surface[0] = r.surface[0];
|
||
return *this;
|
||
}
|
||
public:
|
||
G4ThreeVector p;
|
||
G4ThreeVector vec;
|
||
G4VTwistSurface **surface;
|
||
};
|
||
|
||
class LastValue // last G4double value
|
||
{
|
||
public:
|
||
LastValue()
|
||
{
|
||
p.set(kInfinity,kInfinity,kInfinity);
|
||
value = DBL_MAX;
|
||
}
|
||
~LastValue()= default;
|
||
LastValue(const LastValue& r) = default;
|
||
LastValue& operator=(const LastValue& r)
|
||
{
|
||
if (this == &r) { return *this; }
|
||
p = r.p; value = r.value;
|
||
return *this;
|
||
}
|
||
public:
|
||
G4ThreeVector p;
|
||
G4double value;
|
||
};
|
||
|
||
class LastValueWithDoubleVector // last G4double value
|
||
{
|
||
public:
|
||
LastValueWithDoubleVector()
|
||
{
|
||
p.set(kInfinity,kInfinity,kInfinity);
|
||
vec.set(kInfinity,kInfinity,kInfinity);
|
||
value = DBL_MAX;
|
||
}
|
||
~LastValueWithDoubleVector()= default;
|
||
LastValueWithDoubleVector(const LastValueWithDoubleVector& r) = default;
|
||
LastValueWithDoubleVector& operator=(const LastValueWithDoubleVector& r)
|
||
{
|
||
if (this == &r) { return *this; }
|
||
p = r.p; vec = r.vec; value = r.value;
|
||
return *this;
|
||
}
|
||
public:
|
||
G4ThreeVector p;
|
||
G4ThreeVector vec;
|
||
G4double value;
|
||
};
|
||
|
||
LastState fLastInside;
|
||
LastVector fLastNormal;
|
||
LastValue fLastDistanceToIn;
|
||
LastValue fLastDistanceToOut;
|
||
LastValueWithDoubleVector fLastDistanceToInWithV;
|
||
LastValueWithDoubleVector fLastDistanceToOutWithV;
|
||
};
|
||
|
||
//=====================================================================
|
||
|
||
//---------------------
|
||
// inline functions
|
||
//---------------------
|
||
|
||
inline
|
||
void G4TwistedTubs::SetFields(G4double phitwist, G4double innerrad,
|
||
G4double outerrad, G4double negativeEndz,
|
||
G4double positiveEndz)
|
||
{
|
||
fCubicVolume = 0.;
|
||
fPhiTwist = phitwist;
|
||
fEndZ[0] = negativeEndz;
|
||
fEndZ[1] = positiveEndz;
|
||
fEndZ2[0] = fEndZ[0] * fEndZ[0];
|
||
fEndZ2[1] = fEndZ[1] * fEndZ[1];
|
||
fInnerRadius = innerrad;
|
||
fOuterRadius = outerrad;
|
||
fInnerRadius2 = fInnerRadius * fInnerRadius;
|
||
fOuterRadius2 = fOuterRadius * fOuterRadius;
|
||
|
||
if (std::fabs(fEndZ[0]) >= std::fabs(fEndZ[1]))
|
||
{
|
||
fZHalfLength = std::fabs(fEndZ[0]);
|
||
}
|
||
else
|
||
{
|
||
fZHalfLength = std::fabs(fEndZ[1]);
|
||
}
|
||
|
||
G4double parity = (fPhiTwist > 0 ? 1 : -1);
|
||
G4double tanHalfTwist = std::tan(0.5 * fPhiTwist);
|
||
G4double innerNumerator = std::fabs(fInnerRadius * tanHalfTwist) * parity;
|
||
G4double outerNumerator = std::fabs(fOuterRadius * tanHalfTwist) * parity;
|
||
|
||
fTanInnerStereo = innerNumerator / fZHalfLength;
|
||
fTanOuterStereo = outerNumerator / fZHalfLength;
|
||
fTanInnerStereo2 = fTanInnerStereo * fTanInnerStereo;
|
||
fTanOuterStereo2 = fTanOuterStereo * fTanOuterStereo;
|
||
fInnerStereo = std::atan2(innerNumerator, fZHalfLength);
|
||
fOuterStereo = std::atan2(outerNumerator, fZHalfLength);
|
||
fEndInnerRadius[0] = std::sqrt(fInnerRadius2 + fEndZ2[0] * fTanInnerStereo2);
|
||
fEndInnerRadius[1] = std::sqrt(fInnerRadius2 + fEndZ2[1] * fTanInnerStereo2);
|
||
fEndOuterRadius[0] = std::sqrt(fOuterRadius2 + fEndZ2[0] * fTanOuterStereo2);
|
||
fEndOuterRadius[1] = std::sqrt(fOuterRadius2 + fEndZ2[1] * fTanOuterStereo2);
|
||
|
||
fKappa = tanHalfTwist / fZHalfLength;
|
||
fEndPhi[0] = std::atan2(fEndZ[0] * tanHalfTwist, fZHalfLength);
|
||
fEndPhi[1] = std::atan2(fEndZ[1] * tanHalfTwist, fZHalfLength);
|
||
|
||
#ifdef G4TWISTDEBUG
|
||
G4cout << "/********* G4TwistedTubs::SetFields() Field Parameters ***************** " << G4endl;
|
||
G4cout << "/* fPhiTwist : " << fPhiTwist << G4endl;
|
||
G4cout << "/* fEndZ(0, 1) : " << fEndZ[0] << " , " << fEndZ[1] << G4endl;
|
||
G4cout << "/* fEndPhi(0, 1) : " << fEndPhi[0] << " , " << fEndPhi[1] << G4endl;
|
||
G4cout << "/* fInnerRadius, fOuterRadius : " << fInnerRadius << " , " << fOuterRadius << G4endl;
|
||
G4cout << "/* fEndInnerRadius(0, 1) : " << fEndInnerRadius[0] << " , "
|
||
<< fEndInnerRadius[1] << G4endl;
|
||
G4cout << "/* fEndOuterRadius(0, 1) : " << fEndOuterRadius[0] << " , "
|
||
<< fEndOuterRadius[1] << G4endl;
|
||
G4cout << "/* fInnerStereo, fOuterStereo : " << fInnerStereo << " , " << fOuterStereo << G4endl;
|
||
G4cout << "/* tanHalfTwist, fKappa : " << tanHalfTwist << " , " << fKappa << G4endl;
|
||
G4cout << "/*********************************************************************** " << G4endl;
|
||
#endif
|
||
}
|
||
|
||
#endif
|