fe_compute_data.c

一个用来实现偏微分方程中网格的计算库

// $Id: fe_compute_data.C 2501 2007-11-20 02:33:29Z benkirk $

// The libMesh Finite Element Library.
// Copyright (C) 2002-2007  Benjamin S. Kirk, John W. Peterson
  
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
  
// This library 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
// Lesser General Public License for more details.
  
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

#include "fe_compute_data.h"
#include "equation_systems.h"



void FEComputeData::clear () 
{ 
  this->shape.clear();
#if defined(ENABLE_INFINITE_ELEMENTS) && !defined(USE_COMPLEX_NUMBERS)
  this->phase = 0.;
  this->speed = 0.;
#endif

#if defined (ENABLE_INFINITE_ELEMENTS) && defined(USE_COMPLEX_NUMBERS)
  this->speed = 0.;
  this->frequency = 0.;

#endif
}



void FEComputeData::init () 
{ 
  if (!(this->shape.empty()))
    std::fill (this->shape.begin(),   this->shape.end(),   0.);
  
#if defined(ENABLE_INFINITE_ELEMENTS) && !defined(USE_COMPLEX_NUMBERS)
  this->phase = 0.;

  if (equation_systems.parameters.have_parameter<Real>("speed"))
    this->speed = this->equation_systems.parameters.get<Real>("speed");
#endif

#if defined (ENABLE_INFINITE_ELEMENTS) && defined(USE_COMPLEX_NUMBERS)
  if (equation_systems.parameters.have_parameter<Real>("speed"))
    this->speed = this->equation_systems.parameters.get<Real>("speed");

  if (equation_systems.parameters.have_parameter<Real>("current frequency"))  
    this->frequency = this->equation_systems.parameters.get<Real>("current frequency");

#endif
}