Gabriele Cosmo
235 lines
5.7 KiB
Plaintext
235 lines
5.7 KiB
Plaintext
//
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// ********************************************************************
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// * DISCLAIMER *
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// * *
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// * The following disclaimer summarizes all the specific disclaimers *
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// * of contributors to this software. The specific disclaimers,which *
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// * govern, are listed with their locations in: *
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// * http://cern.ch/geant4/license *
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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. *
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// * *
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// * This code implementation is the intellectual property of the *
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// * GEANT4 collaboration. *
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// * By copying, distributing or modifying the Program (or any work *
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// * based on the Program) you indicate your acceptance of this *
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// * statement, and all its terms. *
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// ********************************************************************
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//
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//
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// $Id: G4Torus.icc,v 1.1 2002/10/28 11:43:04 gcosmo Exp $
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// GEANT4 tag $Name: geant4-05-00 $
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//
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// --------------------------------------------------------------------
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// GEANT 4 inline definitions file
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//
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// G4Torus.icc
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//
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// Implementation of inline methods of G4Torus
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// --------------------------------------------------------------------
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inline
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G4double G4Torus::GetRmin() const
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{
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return fRmin ;
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}
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inline
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G4double G4Torus::GetRmax() const
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{
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return fRmax ;
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}
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inline
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G4double G4Torus::GetRtor() const
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{
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return fRtor ;
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}
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inline
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G4double G4Torus::GetSPhi() const
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{
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return fSPhi ;
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}
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inline
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G4double G4Torus::GetDPhi() const
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{
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return fDPhi ;
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}
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// Utility functions
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inline
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G4double G4Torus::TorusEquation (G4double x, G4double y, G4double z,
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G4double R0, G4double R1) const
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{
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// R0 : Radius of all little circles
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// R1 : Radius of little circles
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// An interesting property is that the sign
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// tell if the point is inside or outside
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// or if > EPSILON on the surface
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G4double temp;
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temp = ((x*x + y*y + z*z) + R0*R0 - R1*R1) ;
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temp = temp*temp ;
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temp = temp - 4*R0*R0*(x*x + y*y) ;
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// > 0 Outside
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// < 0 Inside
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return temp ;
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}
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inline
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G4double G4Torus::TorusDerivativeX (G4double x, G4double y, G4double z,
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G4double R0, G4double R1) const
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{
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return 4*x*(x*x + y*y + z*z + R0*R0 - R1*R1) - 8*R0*R0*x ;
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}
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inline
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G4double G4Torus::TorusDerivativeY (G4double x, G4double y, G4double z,
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G4double R0, G4double R1) const
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{
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return 4*y*(x*x + y*y + z*z + R0*R0 - R1*R1) - 8*R0*R0*y ;
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}
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inline
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G4double G4Torus::TorusDerivativeZ (G4double x, G4double y, G4double z,
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G4double R0, G4double R1) const
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{
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return 4*z*(x*x + y*y + z*z + R0*R0 - R1*R1) ;
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}
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inline
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G4double G4Torus::TorusGradient(G4double dx, G4double dy, G4double dz,
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G4double x, G4double y, G4double z,
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G4double Rmax, G4double Rmin) const
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{
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// This tells the normal at a surface point
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G4double result;
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result = 0;
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result += dx*TorusDerivativeX(x,y,z,Rmax,Rmin);
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result += dy*TorusDerivativeY(x,y,z,Rmax,Rmin);
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result += dz*TorusDerivativeZ(x,y,z,Rmax,Rmin);
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return result;
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}
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// ----------- G4TorusEquation methods ---------------
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inline
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void G4TorusEquation::setRadius (G4double Rmax, G4double Rmin)
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{
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R0 = Rmax;
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R1 = Rmin;
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}
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inline
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void G4TorusEquation::setPosition (G4double x,G4double y,G4double z)
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{
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Px = x;
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Py = y;
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Pz = z;
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}
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inline
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void G4TorusEquation::setPosition (const G4ThreeVector& p)
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{
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Px = p.x();
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Py = p.y();
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Pz = p.z();
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}
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inline
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void G4TorusEquation::setDirection (G4double dirx,G4double diry,G4double dirz)
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{
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dx = dirx;
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dy = diry;
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dz = dirz;
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}
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inline
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void G4TorusEquation::setDirection (const G4ThreeVector& v)
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{
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dx = v.x();
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dy = v.y();
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dz = v.z();
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}
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inline
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G4double G4TorusEquation::TorusEquation (G4double x, G4double y, G4double z)
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{
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// An interesting property is that the sign
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// tells if the point is inside or outside
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// or if > EPSILON on the surface
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G4double temp;
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temp = ((x*x + y*y + z*z) + R0*R0 - R1*R1) ;
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temp = temp*temp ;
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temp = temp - 4*R0*R0*(x*x + y*y) ;
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// > 0 Outside
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// < 0 Inside
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return temp ;
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}
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inline
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G4double G4TorusEquation::TorusDerivativeX (G4double x, G4double y, G4double z)
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{
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return 4*x*(x*x + y*y + z*z + R0*R0 - R1*R1) - 8*R0*R0*x ;
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}
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inline
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G4double G4TorusEquation::TorusDerivativeY (G4double x, G4double y, G4double z)
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{
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return 4*y*(x*x + y*y + z*z + R0*R0 - R1*R1) - 8*R0*R0*y ;
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}
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inline
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G4double G4TorusEquation::TorusDerivativeZ (G4double x, G4double y, G4double z)
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{
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return 4*z*(x*x + y*y + z*z + R0*R0 - R1*R1) ;
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}
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inline
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G4double G4TorusEquation::Function (G4double value)
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{
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G4double Lx,Ly,Lz;
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G4double result;
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Lx = Px + value*dx;
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Ly = Py + value*dy;
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Lz = Pz + value*dz;
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result = TorusEquation(Lx,Ly,Lz);
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return result ;
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}
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inline
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G4double G4TorusEquation::Derivative(G4double value)
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{
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G4double Lx,Ly,Lz;
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G4double result;
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Lx = Px + value*dx;
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Ly = Py + value*dy;
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Lz = Pz + value*dz;
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result = dx*TorusDerivativeX(Lx,Ly,Lz);
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result += dy*TorusDerivativeY(Lx,Ly,Lz);
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result += dz*TorusDerivativeZ(Lx,Ly,Lz);
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return result;
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}
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