Gabriele Cosmo
154 lines
4.0 KiB
C++
154 lines
4.0 KiB
C++
// This code implementation is the intellectual property of
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// the GEANT4 collaboration.
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//
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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 statement,
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// and all its terms.
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//
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// $Id: G4FCylindricalSurface.hh,v 1.4.8.1 1999/12/07 20:48:18 gunter Exp $
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// GEANT4 tag $Name: geant4-01-00 $
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//
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#ifndef __FCYLINDER_H
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#define __FCYLINDER_H
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#include "G4PointRat.hh"
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#include "G4Axis2Placement3D.hh"
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#include "G4Surface.hh"
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// Position.axis| radius
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// >|---|<---------
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// |
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// -- +---|---+
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// l | | | |
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// e | | | |
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// n | | | |
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// g | | | |
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// t | | | |
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// h | | | |
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// -- +---|---+
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// Position
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class G4FCylindricalSurface: public G4Surface
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{
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protected:
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G4Axis2Placement3D Position;
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G4double radius;
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G4double length;
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public:
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// default constructor
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G4FCylindricalSurface()
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{
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length = 1.0;
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}
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// Constructor utilized by the G4BREPSolidPCone
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// first argument is the origin
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// second argument is the axis
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// third argument is the radius
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// fourth argument is the length
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G4FCylindricalSurface( const G4Point3D& o,
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const G4Vector3D& a,
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const G4double r,
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const G4double l );
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// destructor
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~G4FCylindricalSurface() {}
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// copy constructor
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G4FCylindricalSurface(const G4FCylindricalSurface& c);
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virtual G4Vector3D SurfaceNormal( const G4Point3D& p ) const;
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virtual int Inside( const G4Vector3D& x ) const;
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//
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G4String GetEntityType()
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{
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return G4String("Cylindrical_Surface");
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}
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// This function count the number of intersections of a
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// bounded cylindrical surface by a ray.
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// At first, calculates the intersections with the infinite
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// cylindrical surfsace. After, count the intersections within the
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// finite cylindrical surface boundaries, and set "distance" to the
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// closest distance from the start point to the nearest intersection
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// If the point is on the surface it returns or the intersection with
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// the opposite surface or kInfinity
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// If no intersection is founded, set distance = kInfinity and
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// return 0
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int Intersect(const G4Ray&);
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// Shortest distance from the point x to the G4FCylindricalSurface.
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// The distance will be always positive.
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virtual G4double HowNear( const G4Vector3D& x ) const;
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//
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void CalcBBox();
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// function to return class name
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virtual char *NameOf() const
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{
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return "G4FCylindricalSurface";
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}
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// printing function
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virtual void PrintOn( ostream& os = G4cout ) const;
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// equality operator
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int operator==( const G4FCylindricalSurface& c );
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// function which returns true (1) if the point x is within the boundary
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// returns false (0) otherwise
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virtual int WithinBoundary( const G4Vector3D& x ) const;
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// function to return the radius of a G4FCylindricalSurface.
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// Used for Scale-invariant tests of surface thickness.
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// If the radius is zero, returns the length.
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virtual G4double Scale() const;
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// function to calculate the Area of a G4FCylindricalSurface
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virtual G4double Area() const
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{
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return ( 2.0 * M_PI * radius * length );
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}
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// function to change the radius and length of the G4FCylindricalSurface
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// the first (input) argument is the new radius
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// the second (input) argument is the new length
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virtual void resize( G4double r, G4double l );
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// function to return the length of the G4FCylindricalSurface
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G4double GetLength() const
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{
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return length;
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}
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G4Vector3D GetAxis() const { return Position.GetAxis(); }
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G4double GetRadius() const { return radius; }
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void SetRadius( G4double r );
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// Re-calculates the private values of the G4FCylindrical surface
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// before the Intersect and HowNear function if the G4FCylindrical
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// was created by the STEP interface
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void InitValues();
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};
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#endif
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