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geant4/source/geometry/solids/specific/include/G4VTwistedFaceted.hh
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// $Id: G4VTwistedFaceted.hh,v 1.10 2006/10/20 13:45:20 gcosmo Exp $
// GEANT4 tag $Name: geant4-09-01 $
//
// --------------------------------------------------------------------
// GEANT 4 class header file
//
//
// G4VTwistedFaceted
//
// Class description:
//
// G4VTwistedFaceted is an abstract base class for twisted boxoids:
// G4TwistedTrd, G4TwistedTrap and G4TwistedBox
// Author:
//
// 27-Oct-2004 - O.Link (Oliver.Link@cern.ch)
//
// --------------------------------------------------------------------
#ifndef __G4VTWISTEDFACETED__
#define __G4VTWISTEDFACETED__
#include "G4VSolid.hh"
#include "G4TwistTrapAlphaSide.hh"
#include "G4TwistTrapParallelSide.hh"
#include "G4TwistBoxSide.hh"
#include "G4TwistTrapFlatSide.hh"
class G4SolidExtentList;
class G4ClippablePolygon;
class G4VTwistedFaceted: public G4VSolid
{
public: // with description
G4VTwistedFaceted(const G4String &pname, // Name of instance
G4double PhiTwist, // twist angle
G4double pDz, // half z lenght
G4double pTheta, // direction between end planes
G4double pPhi, // defined by polar & azim. angles
G4double pDy1, // half y length at -pDz
G4double pDx1, // half x length at -pDz,-pDy
G4double pDx2, // half x length at -pDz,+pDy
G4double pDy2, // half y length at +pDz
G4double pDx3, // half x length at +pDz,-pDy
G4double pDx4, // half x length at +pDz,+pDy
G4double pAlph // tilt angle at +pDz
);
virtual ~G4VTwistedFaceted();
virtual void ComputeDimensions(G4VPVParameterisation*,
const G4int,
const G4VPhysicalVolume* );
virtual G4bool CalculateExtent(const EAxis pAxis,
const G4VoxelLimits &pVoxelLimit,
const G4AffineTransform &pTransform,
G4double &pMin,
G4double &pMax ) const;
virtual G4double DistanceToIn (const G4ThreeVector &p,
const G4ThreeVector &v ) const;
virtual G4double DistanceToIn (const G4ThreeVector &p ) const;
virtual G4double DistanceToOut(const G4ThreeVector &p,
const G4ThreeVector &v,
const G4bool calcnorm = false,
G4bool *validnorm = 0,
G4ThreeVector *n=0 ) const;
virtual G4double DistanceToOut(const G4ThreeVector &p) const;
virtual EInside Inside (const G4ThreeVector &p) const;
virtual G4ThreeVector SurfaceNormal(const G4ThreeVector &p) const;
G4ThreeVector GetPointOnSurface() const;
G4ThreeVector GetPointInSolid(G4double z) const;
virtual inline G4double GetCubicVolume() ;
virtual inline G4double GetSurfaceArea() ;
virtual void DescribeYourselfTo (G4VGraphicsScene &scene) const;
virtual G4Polyhedron *CreatePolyhedron () const ;
virtual G4NURBS *CreateNURBS () const;
virtual G4Polyhedron *GetPolyhedron () const;
virtual std::ostream &StreamInfo(std::ostream& os) const;
// accessors
inline G4double GetTwistAngle () const { return fPhiTwist; }
inline G4double GetDx1 () const { return fDx1 ; }
inline G4double GetDx2 () const { return fDx2 ; }
inline G4double GetDx3 () const { return fDx3 ; }
inline G4double GetDx4 () const { return fDx4 ; }
inline G4double GetDy1 () const { return fDy1 ; }
inline G4double GetDy2 () const { return fDy2 ; }
inline G4double GetDz () const { return fDz ; }
inline G4double GetPhi () const { return fPhi ; }
inline G4double GetTheta () const { return fTheta ; }
inline G4double GetAlpha () const { return fAlph ; }
inline G4double Xcoef(G4double u,G4double phi, G4double ftg) const ;
// For calculating the w(u) function
inline G4double GetValueA(G4double phi) const;
inline G4double GetValueB(G4double phi) const;
inline G4double GetValueD(G4double phi) const;
virtual G4VisExtent GetExtent () const;
virtual G4GeometryType GetEntityType() const;
public: // without description
G4VTwistedFaceted(__void__&);
// Fake default constructor for usage restricted to direct object
// persistency for clients requiring preallocation of memory for
// persistifiable objects.
protected: // with description
G4ThreeVectorList*
CreateRotatedVertices(const G4AffineTransform& pTransform) const;
// Create the List of transformed vertices in the format required
// for G4VSolid:: ClipCrossSection and ClipBetweenSections.
private:
void CreateSurfaces();
private:
G4double fTheta;
G4double fPhi ;
G4double fDy1;
G4double fDx1;
G4double fDx2;
G4double fDy2;
G4double fDx3;
G4double fDx4;
G4double fDz; // Half-length along the z axis
G4double fDx ; // maximum side in x
G4double fDy ; // maximum side in y
G4double fAlph ;
G4double fTAlph ; // std::tan(fAlph)
G4double fdeltaX ;
G4double fdeltaY ;
G4double fPhiTwist; // twist angle ( dphi in surface equation)
G4double fAngleSide;
G4VTwistSurface *fLowerEndcap ; // surface of -ve z
G4VTwistSurface *fUpperEndcap ; // surface of +ve z
G4VTwistSurface *fSide0 ; // Twisted Side at phi = 0 deg
G4VTwistSurface *fSide90 ; // Twisted Side at phi = 90 deg
G4VTwistSurface *fSide180 ; // Twisted Side at phi = 180 deg
G4VTwistSurface *fSide270 ; // Twisted Side at phi = 270 deg
G4double fCubicVolume ; // volume of the solid
G4double fSurfaceArea ; // area of the solid
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
G4double G4VTwistedFaceted::GetCubicVolume()
{
if(fCubicVolume != 0.) ;
else fCubicVolume = 2 * fDz
* ( ( fDx1 + fDx2 ) * fDy1 + ( fDx3 + fDx4 ) * fDy2 );
return fCubicVolume;
}
inline
G4double G4VTwistedFaceted::GetSurfaceArea()
{
if(fSurfaceArea != 0.) ;
else fSurfaceArea = G4VSolid::GetSurfaceArea();
return fSurfaceArea;
}
inline
G4double G4VTwistedFaceted::GetValueA(G4double phi) const
{
return ( fDx4 + fDx2 + ( fDx4 - fDx2 ) * ( 2 * phi ) / fPhiTwist ) ;
}
inline
G4double G4VTwistedFaceted::GetValueD(G4double phi) const
{
return ( fDx3 + fDx1 + ( fDx3 - fDx1 ) * ( 2 * phi ) / fPhiTwist ) ;
}
inline
G4double G4VTwistedFaceted::GetValueB(G4double phi) const
{
return ( fDy2 + fDy1 + ( fDy2 - fDy1 ) * ( 2 * phi ) / fPhiTwist ) ;
}
inline
G4double G4VTwistedFaceted::Xcoef(G4double u, G4double phi, G4double ftg) const
{
return GetValueA(phi)/2. + (GetValueD(phi)-GetValueA(phi))/4.
- u*( ( GetValueD(phi)-GetValueA(phi) ) / ( 2 * GetValueB(phi) ) - ftg );
}
#endif