/usr/include/lorene/C++/Include/metconf.h is in liblorene-dev 0.0.0~cvs20161116+dfsg-1.
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* Definition of Lorene class Metconf
*
*/
/*
* Copyright (c) 2002 Jerome Novak
*
* This file is part of LORENE.
*
* LORENE is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* LORENE is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with LORENE; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#ifndef __METCONF_H_
#define __METCONF_H_
/*
* $Id: metconf.h,v 1.7 2014/10/13 08:52:35 j_novak Exp $
* $Log: metconf.h,v $
* Revision 1.7 2014/10/13 08:52:35 j_novak
* Lorene classes and functions now belong to the namespace Lorene.
*
* Revision 1.6 2003/03/03 19:09:44 f_limousin
* Add a constructor from a tensor and a metric.
*
* Revision 1.5 2002/12/09 09:51:02 f_limousin
*
* Added some Doc++ comments
*
* Revision 1.4 2002/10/16 14:36:29 j_novak
* Reorganization of #include instructions of standard C++, in order to
* use experimental version 3 of gcc.
*
* Revision 1.3 2002/09/11 08:50:56 j_novak
* Modifs. des commentaires
*
* Revision 1.2 2002/08/13 08:02:45 j_novak
* Handling of spherical vector/tensor components added in the classes
* Mg3d and Tenseur. Minor corrections for the class Metconf.
*
* Revision 1.1 2002/08/09 15:41:08 j_novak
* New class Metconf added for conformal metric handling.
*
*
* $Header: /cvsroot/Lorene/C++/Include/metconf.h,v 1.7 2014/10/13 08:52:35 j_novak Exp $
*
*/
// Headers Lorene
#include "metrique.h"
namespace Lorene {
/**
* Pseudo-metric handling.
*
* This class is used to described 3-dimensionnal pseudo-metrics
* $\tilde{\gamma}_{ij} = \gamma^{-1/3}\gamma_{ij}$, with $\gamma_{ij}$
* being a usual 3-metric. Thus the covariant representation is a tensor
* density of weight -2/3 and the contravariant a 2/3 one.
* It is a child class of {\tt Metrique} and
* includes a dynamical calculation of the Christoffel symbols,
* the Ricci-curvature and the Ricci-scalar.
*
* @version #$Id: metconf.h,v 1.7 2014/10/13 08:52:35 j_novak Exp $#
*/
class Metconf: public Metrique {
// Data :
// -----
protected:
/// Pointer on the physical 3-metric
const Metrique* gamij ;
/// Pointer on the flat 3-metric
const Metrique* fij ;
/// Flag for Dirac gauge
bool dirac ;
// Derived data :
// ------------
/**
* Pointer on the $\Delta^i_{jk}$'s
*/
mutable Tenseur_sym* p_delta ;
/**
* Pointer on the divergence
*/
mutable Tenseur* p_Hi ;
// Constructors - Destructor :
// -------------------------
public:
/** Standard constructor.
* Nothing is allocated but {\tt dependances}.
*/
explicit Metconf (const Map&, const Metrique& metric,
const Metrique& metplat, bool jauge = false,
bool plate = false) ;
Metconf (const Metconf&) ; /// Constructor by copy.
/** Constructor from a {\tt Tenseur\_sym} of {\tt valence} = 2.
* One representation is allocated depending on the
* type of {\tt source}.
*/
Metconf (const Tenseur_sym& source, const Metrique& metplat,
bool jauge = false, bool plate = false) ;
/** Constructor from a {\tt Tenseur\_sym} of {\tt valence} = 2
* and a metric.
* One representation is allocated depending on the
* type of {\tt source}.
*/
Metconf (const Tenseur_sym& source, const Metrique& metric,
const Metrique& metplat, bool jauge = false,
bool plate = false) ;
/** Constructor from a file (see {\tt sauve(FILE* )}).
*
* @param map the mapping
* @param triad_i vectorial basis (triad) with respect to which
* the tensor components are defined. It will
* be checked that it coincides with the basis
* saved in the file.
* @param fich file which has been created by
* the function {\tt sauve(FILE* )}.
*/
Metconf(const Map& map, const Base_vect& triad_i, const Metrique&
metric, const Metrique& metplat, FILE* fich) ;
virtual ~Metconf() ; /// Destructor
// Memory management
// -----------------
protected:
virtual void del_deriv() ; /// Logical destructor of the derivative members.
/**
* Sets all the pointer on the derivative members to zero.
*/
virtual void set_der_0x0() ;
// Mutators / assignment
// ---------------------
public:
///Assignment from another {\tt Metconf}.
void operator= (const Metconf&) ;
/**
* Assignment from a {\tt Tenseur\_sym} of {\tt valence =2}.
* The allocated representation depends on the type of {\tt t}.
* All the other members are deleted.
*/
virtual void operator= (const Tenseur_sym& t) ;
// Accessors
// ---------
public:
const Tenseur_sym& delta() const ; ///Returns $\Delta^i_{jk}$
///Returns the divergence of {\it this}, using the flat metric.
const Tenseur& Hi() const ;
/// Returns a pointer on the flat metric.
const Metrique* get_fij() const{return fij ; } ;
///Is the metric in the Dirac gauge?
bool dirac_gauge() const {return dirac;} ;
void set_dirac_gauge(bool gauge) ; ///Sets the dirac flag
void set_flat_metric(const Metrique& flat) ; ///Sets the flat metric
// Outputs
// -------
public:
virtual void sauve(FILE *) const ; /// Save in a file
// Computation of derived members
// ------------------------------
protected:
/**
* Calculates, if needed, the $\Delta^i_{jk}$.
* The result is in {\tt *p\_delta}.
*/
void fait_delta() const ;
/**
* Calculates, if needed, the divergence of the pseudo metric.
* The result is in {\tt *p\_Hi}.
*/
void fait_Hi() const ;
/**
* Calculates, if needed, the Christoffel symbols.
* The result is in {\tt *p\_gamma}.
*/
virtual void fait_gamma() const ;
/**
* Calculates, if needed, the Ricci-curvature.
* The result is in {\tt *p\_ricci}.
*/
virtual void fait_ricci() const ;
/**
* Calculates, if needed, the Ricci-scalar.
* The result is in {\tt *p\_ricci\_scal}.
*/
virtual void fait_ricci_scal() const ;
/**
* The determinant is always one for the conformal metric.
* This result is in {\tt *p\_determinant}.
*/
virtual void fait_determinant() const ;
// Friend classes
// ---------------
friend class Tenseur ; /// Friend class {\tt Tenseur}.
};
}
#endif
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