// // ******************************************************************** // * 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. * // ******************************************************************** // // // $Id: G4TwistedTubs.hh,v 1.14 2007/05/23 09:32:35 gcosmo Exp $ // GEANT4 tag $Name: geant4-09-04-beta-01 $ // // // -------------------------------------------------------------------- // GEANT 4 class header file // // // G4TwistedTubs // // Class description: // // G4TwistedTubs is a sort of twisted 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. // It can have inner & outer surfaces as well as G4TwistedTubs, // but cannot has different stereo angles between the inner surface // and outer surface. // Author: // 01-Aug-2002 - Kotoyo Hoshina (hoshina@hepburn.s.chiba-u.ac.jp) // // History: // 13-Nov-2003 - O.Link (Oliver.Link@cern.ch), Integration in Geant4 // from original version in Jupiter-2.5.02 application. // -------------------------------------------------------------------- #ifndef __G4TWISTEDTUBS__ #define __G4TWISTEDTUBS__ #include "G4VSolid.hh" #include "G4TwistTubsFlatSide.hh" #include "G4TwistTubsSide.hh" #include "G4TwistTubsHypeSide.hh" class G4SolidExtentList; class G4ClippablePolygon; class G4TwistedTubs : public G4VSolid { public: // with description 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 virtual ~G4TwistedTubs(); void ComputeDimensions(G4VPVParameterisation * /* p */ , const G4int /* n */ , const G4VPhysicalVolume * /* prep */ ); G4bool CalculateExtent(const EAxis paxis, const G4VoxelLimits &pvoxellimit, const G4AffineTransform &ptransform, G4double &pmin, G4double &pmax ) const; G4double DistanceToIn (const G4ThreeVector &p, const G4ThreeVector &v ) const; G4double DistanceToIn (const G4ThreeVector &p ) const; G4double DistanceToOut(const G4ThreeVector &p, const G4ThreeVector &v, const G4bool calcnorm=G4bool(false), G4bool *validnorm=0, G4ThreeVector *n=0 ) const; G4double DistanceToOut(const G4ThreeVector &p) const; EInside Inside (const G4ThreeVector &p) const; G4ThreeVector SurfaceNormal(const G4ThreeVector &p) const; void DescribeYourselfTo (G4VGraphicsScene &scene) const; G4Polyhedron *CreatePolyhedron () const; G4NURBS *CreateNURBS () const; G4Polyhedron *GetPolyhedron () const; std::ostream &StreamInfo(std::ostream& os) const; // 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; G4GeometryType GetEntityType() const; G4double GetCubicVolume(); // Returns an estimation of the geometrical cubic volume of the // solid. Caches the computed value once computed the first time. G4double GetSurfaceArea(); // Returns an estimation of the geometrical surface area of the // solid. Caches the computed value once computed the first time. G4ThreeVector GetPointOnSurface() const ; public: // without description G4TwistedTubs(__void__&); // Fake default constructor for usage restricted to direct object // persistency for clients requiring preallocation of memory for // persistifiable objects. #ifdef G4TWISTDEBUG G4VTwistSurface * GetOuterHype() const { return fOuterHype; } #endif private: inline void SetFields(G4double phitwist, G4double innerrad, G4double outerrad, G4double negativeEndz, G4double positiveEndz); void CreateSurfaces(); static void AddPolyToExtent( const G4ThreeVector &v0, const G4ThreeVector &v1, const G4ThreeVector &w1, const G4ThreeVector &w0, const G4VoxelLimits &voxellimit, const EAxis axis, G4SolidExtentList &extentlist ); 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; // Cached value for cubic volume G4double fSurfaceArea; // Cached value for surface area mutable G4Polyhedron* fpPolyhedron; // pointer to polyhedron for vis class LastState // last Inside result { public: LastState() { p.set(kInfinity,kInfinity,kInfinity); inside = kOutside; } ~LastState(){} 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; } public: G4ThreeVector p; G4ThreeVector vec; G4VTwistSurface **surface; }; class LastValue // last G4double value { public: LastValue() { p.set(kInfinity,kInfinity,kInfinity); value = DBL_MAX; } ~LastValue(){} 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(){} 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; G4int maxi; if (std::fabs(fEndZ[0]) >= std::fabs(fEndZ[1])) { fZHalfLength = std::fabs(fEndZ[0]); maxi = 0; } else { fZHalfLength = std::fabs(fEndZ[1]); maxi = 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