Import Geant4 7.0.0 source tree

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+//
+// ********************************************************************
+// * DISCLAIMER                                                       *
+// *                                                                  *
+// * The following disclaimer summarizes all the specific disclaimers *
+// * of contributors to this software. The specific disclaimers,which *
+// * govern, are listed with their locations in:                      *
+// *   http://cern.ch/geant4/license                                  *
+// *                                                                  *
+// * 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.                                                             *
+// *                                                                  *
+// * This  code  implementation is the  intellectual property  of the *
+// * GEANT4 collaboration.                                            *
+// * By copying,  distributing  or modifying the Program (or any work *
+// * based  on  the Program)  you indicate  your  acceptance of  this *
+// * statement, and all its terms.                                    *
+// ********************************************************************
+//
+//
+// $Id: G4TwistedBoxSide.hh,v 1.4 2004/12/08 10:20:33 link Exp $
+// GEANT4 tag $Name: geant4-07-00-cand-03 $
+//
+// 
+// --------------------------------------------------------------------
+// GEANT 4 class header file
+//
+//
+// G4TwistedTrapSide
+//
+// Class description:
+//
+//  Class describing a twisted boundary surface for a box.
+
+// Author:
+//
+//   Oliver Link (Oliver.Link@cern.ch)
+//
+// --------------------------------------------------------------------
+#ifndef __G4TWISTEDBOXSIDE__
+#define __G4TWISTEDBOXSIDE__
+
+#include "G4VSurface.hh"
+
+#include <vector>
+
+class G4TwistedBoxSide : public G4VSurface
+{
+  public:  // with description
+   
+    G4TwistedBoxSide(const G4String     &name,
+                           G4double      PhiTwist,
+                           G4double      fDx,
+                           G4double      fDy,
+                           G4double      fDz,
+                           G4double      AngleSide);
+  
+    virtual ~G4TwistedBoxSide();
+   
+    virtual G4ThreeVector  GetNormal(const G4ThreeVector &xx,
+                                            G4bool isGlobal = false) ;   
+   
+    virtual G4int DistanceToSurface(const G4ThreeVector &gp,
+                                    const G4ThreeVector &gv,
+                                          G4ThreeVector  gxx[],
+                                          G4double  distance[],
+                                          G4int     areacode[],
+                                          G4bool    isvalid[],
+                                          EValidate validate=kValidateWithTol);
+                                                  
+    virtual G4int DistanceToSurface(const G4ThreeVector &gp,
+                                          G4ThreeVector  gxx[],
+                                          G4double       distance[],
+                                          G4int          areacode[]);
+
+  private:
+
+    virtual G4int GetAreaCode(const G4ThreeVector &xx, 
+                                    G4bool         withTol = true);
+    virtual void SetCorners();
+    virtual void SetBoundaries();
+
+    void GetPhiUAtX( G4ThreeVector p, G4double &phi, G4double &u);
+    G4ThreeVector ProjectPoint(const G4ThreeVector &p,
+                                     G4bool isglobal = false);
+
+    inline G4ThreeVector SurfacePoint( G4double phi, G4double u);
+    inline G4ThreeVector NormAng( G4double phi, G4double u );
+
+  private:
+
+    G4double       fDx ;
+    G4double       fDy ;
+    G4double       fDz ;
+    G4double       fPhiTwist ;
+    G4double       fAngleSide ;
+};   
+
+//========================================================
+// inline functions
+//========================================================
+
+inline
+G4ThreeVector G4TwistedBoxSide::SurfacePoint( G4double phi, G4double u ) 
+{
+  // function to calculate a point on the surface, given by parameters phi,u
+
+  G4ThreeVector SurfPoint ( fDx * std::cos(phi) - u * std::sin(phi),
+                            fDx * std::sin(phi) + u * std::cos(phi),
+                            2*fDz*phi/fPhiTwist );
+  return SurfPoint ;
+}
+
+inline
+G4ThreeVector G4TwistedBoxSide::NormAng( G4double phi, G4double u ) 
+{
+  // function to calculate the norm at a given point on the surface
+
+  G4double L = 2*fDz ;
+  G4ThreeVector nvec( L*std::cos(phi), L*std::sin(phi), fPhiTwist*u);
+
+  return nvec.unit() ;
+}
+
+
+#endif