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// This file is part of ff3d - http://www.freefem.org/ff3d
// Copyright (C) 2001, 2002, 2003 Stphane Del Pino
// This program 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, or (at your option)
// any later version.
// This program 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 this program; if not, write to the Free Software Foundation,
// Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
// $Id: UserFunction.cpp,v 1.9 2005/04/20 22:35:44 delpinux Exp $
#include <fstream>
#include <Types.hpp>
#include <Structured3DMesh.hpp>
#include <UserFunction.hpp>
#include <Scene.hpp>
#include <FunctionExpression.hpp>
/*! Unary minus for UserFunctions
\todo Make this function virtual.
*/
UserFunction UserFunction::operator- () const
{
return UnaryMinusUserFunction(this);
}
real_t UserFunctionLanguage::operator()(const TinyVector<3>& X) const
{
return (*__function).value(X[0], X[1], X[2]);
}
void UserFunctionLanguage::gradient(TinyVector<3>& gradient,
const TinyVector<3>& X) const
{
#warning BAD TRICK TO AVOID CONST PROBLEM
FunctionExpression* f = __function;
switch((*(*f).value()).type()) {
case (FunctionExpression::fem): {
const FunctionExpressionFEM& F
= dynamic_cast<const FunctionExpressionFEM&>(*(*f).value());
gradient[0] = F.dx(X,FunctionExpressionDx::x);
gradient[1] = F.dx(X,FunctionExpressionDx::y);
gradient[2] = F.dx(X,FunctionExpressionDx::z);
break;
}
default: {
throw ErrorHandler(__FILE__,__LINE__,
"unexpected function type",
ErrorHandler::unexpected);
}
}
}
UserFunctionLanguage::
UserFunctionLanguage(UserFunctionLanguage& U)
: __function(U.__function)
{
;
}
UserFunctionLanguage::
UserFunctionLanguage(ReferenceCounting<FunctionExpression> f)
: __function(f)
{
;
}
UserFunctionLanguage::~UserFunctionLanguage()
{
;
}
//! Constructs a OneUserFunction using the POV-Ray reference \a r.
OneUserFunction::OneUserFunction(TinyVector<3>& r)
{
fferr(2) << __FILE__ << ':' << __LINE__ << ": Not Implemented\n";
/*
extern Scene* CurrentScene;
for (size_t i =0; i<CurrentScene->NbObj() ; i++) {
if (CurrentScene->Objects(i).Ref() == r)
o.push_back(&(CurrentScene->Objects(i)));
}
if (o.size() == 0)
fferr(2) << "warning: no object in the Scene has reference " << r << '\n';
*/
}
//! Evalutes \f$ 1_{\cup_i o_i} \f$ at point \a X.
real_t OneUserFunction::operator()(const TinyVector<3>& X) const
{
for (size_t i=0; i<o.size(); i++)
if (o[i]->inside(X))
return 1;
return 0;
}
//! Constructor.
OneMeshUserFunction::OneMeshUserFunction(ConstReferenceCounting<Structured3DMesh> givenMesh)
: __mesh(givenMesh)
{
;
}
//! Destructor.
OneMeshUserFunction::~OneMeshUserFunction()
{
;
}
real_t OneDomainUserFunction::operator()(const TinyVector<3>& x) const
{
return (*__domain).inside(x);
}
OneDomainUserFunction::
OneDomainUserFunction(ConstReferenceCounting<Domain> domain)
: __domain(domain)
{
;
}
OneDomainUserFunction::~OneDomainUserFunction()
{
;
}
//! Evalutes the characteristic function of the \a mesh at point \a X
real_t OneMeshUserFunction::operator()(const TinyVector<3>& X) const
{
return ((*__mesh).inside(X));
}
//! Constructs a FEM0UserFunction using a pointer on a Structured3DMesh and a UserFunction
FEM0UserFunction::FEM0UserFunction(ReferenceCounting<Mesh> pmesh,
const Vector<real_t>& F)
: __mesh(pmesh),
__values(F)
{
assert((*__mesh).numberOfCells() == __values.size());
}
/*!
Constructs a FEM0UserFunction using a pointer on a Structured3DMesh and a Vector of data.
\warning Will have to change this for the vectorial case.
*/
FEM0UserFunction::FEM0UserFunction(ReferenceCounting<Mesh> pmesh, const UserFunction& F)
: __mesh(pmesh),
__values((*__mesh).numberOfVertices())
{
throw ErrorHandler(__FILE__,__LINE__,
"not implemented",
ErrorHandler::unexpected);
}
//! Constructs a FEM0UserFunction using a pointer on a Structured3DMesh and a real_t
FEM0UserFunction::FEM0UserFunction(ReferenceCounting<Mesh> pmesh, const real_t d)
: __mesh(pmesh),
__values((*__mesh).numberOfVertices())
{
__values = d;
}
//! Evaluates the FEM0UserFunction at point \a X.
real_t FEM0UserFunction::operator()(const TinyVector<3>& V) const
{
switch((*__mesh).type()) {
case Mesh::cartesianHexahedraMesh: {
const Structured3DMesh& mesh = static_cast<const Structured3DMesh&>(*__mesh);
Structured3DMesh::const_iterator icell = mesh.find(V);
if (not(icell.end())) {
assert(icell.number() < __values.size());
return __values(icell.number());
} else {
return 0;
}
break;
}
default: {
throw ErrorHandler(__FILE__,__LINE__,
"unexpected mesh type",
ErrorHandler::unexpected);
}
}
return 0;
}
//! Affects a \a Vector of data to the FEM0UserFunction.
void FEM0UserFunction::operator=(Vector<real_t>& u)
{
assert(__values.size() == u.size());
__values = u;
}
FEM0UserFunction::~FEM0UserFunction()
{
;
}
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