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// $Id$
//
/// \file field/field04/include/F04SimpleSolenoid.hh
/// \brief Definition of the F04SimpleSolenoid class
//

#ifndef F04SimpleSolenoid_h
#define F04SimpleSolenoid_h 1

#include "G4LogicalVolume.hh"
#include "G4Tubs.hh"

#include "F04ElementField.hh"
#include "F04GlobalField.hh"

//  F04SimpleSolenoid implements a solenoid magnet with a constant
//  cylindrical magnetic field in z-direction

class F04SimpleSolenoid : public F04ElementField
{
  public:

    ///  Default constructor.
    F04SimpleSolenoid(G4double, G4double, G4LogicalVolume*, G4ThreeVector);

    ///  Destructor.
    virtual ~F04SimpleSolenoid() {}

    ///  GetLength() returns the length of the solenoid
    virtual G4double GetLength() { return fFieldLength; }

    ///  GetWidth() returns the solenoid diameter
    virtual G4double GetWidth() { return fFieldRadius*2.0; }

    ///  GetHeight() returns the solenoid diameter
    virtual G4double GetHeight() { return fFieldRadius*2.0; }

    /// SetFringeZ(G4double) sets the solenoid fringe field z-length
    void SetFringeZ(G4double z) { fFringeZ = z; }

    /// GetFringeZ() returns the solenoid fringe field z-length
    G4double GetFringeZ() { return fFringeZ; }

    ///  IsOutside() returns true when outside the solenoid
    G4bool IsOutside(G4ThreeVector& local) const;

    /// IsWithin() returns true when inside the solenoid
    G4bool IsWithin(G4ThreeVector& local) const;

    ///  AddFieldValue() adds the field for this solenoid into field[].
    ///  point[] is in global coordinates.
    virtual void AddFieldValue(const G4double point[4], G4double field[6]) const;

  private:

    G4double fBfield;

    G4double fFringeZ;

    G4double fFieldLength;
    G4double fFieldRadius;

};

#endif
