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// This file is part of ff3d - http://www.freefem.org/ff3d
// Copyright (C) 2005 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: MeshPeriodizer.cpp,v 1.3 2006/11/13 00:31:35 delpinux Exp $
#include <MeshPeriodizer.hpp>
#include <Structured3DMesh.hpp>
template <typename MeshType>
void MeshPeriodizer::__build(const bool& builtLocalizationTools)
{
throw ErrorHandler(__FILE__,__LINE__,
"not implemented",
ErrorHandler::unexpected);
}
template <>
void MeshPeriodizer::
__build<Structured3DMesh>(const bool& builtLocalizationTools)
{
const Structured3DMesh& inputMesh
= static_cast<const Structured3DMesh&>(*__input);
bool xperiodicity = false;
bool yperiodicity = false;
bool zperiodicity = false;
for (ReferencesMapping::const_iterator i = __referencesMapping.begin();
i != __referencesMapping.end(); ++i) {
const size_t periodicityDescriptor = (*i).first+(*i).second;
switch(periodicityDescriptor) {
case 1: { // 0+1
xperiodicity = true;
break;
}
case 5: { // 2+3
yperiodicity = true;
break;
}
case 9: { // 4+5
zperiodicity = true;
break;
}
default: {
throw ErrorHandler(__FILE__,__LINE__,
"cannot built periodic mesh using borders "
+stringify((*i).first)+" and "
+stringify((*i).second),
ErrorHandler::normal);
}
}
}
Vector<size_t> correspondances(inputMesh.numberOfVertices());
for (size_t i=0; i<inputMesh.numberOfVertices(); ++i) {
correspondances[i] = i;
}
const Structured3DMeshShape& shape = inputMesh.shape();
if (xperiodicity) {
const size_t nx_1 = shape.nx()-1;
for (size_t j=0; j<shape.ny(); ++j) {
for (size_t k=0; k<shape.nz(); ++k) {
const size_t n0 = shape(0,j,k);
const size_t n1 = shape(nx_1,j,k);
correspondances[n1] = correspondances[n0];
}
}
}
if (yperiodicity) {
const size_t ny_1 = shape.ny()-1;
for (size_t i=0; i<shape.nx(); ++i) {
for (size_t k=0; k<shape.nz(); ++k) {
const size_t n2 = shape(i,0,k);
const size_t n3 = shape(i,ny_1,k);
correspondances[n3] = correspondances[n2];
}
}
}
if (zperiodicity) {
const size_t nz_1 = shape.nz()-1;
for (size_t i=0; i<shape.nx(); ++i) {
for (size_t j=0; j<shape.ny(); ++j) {
const size_t n4 = shape(i,j,0);
const size_t n5 = shape(i,j,nz_1);
correspondances[n5] = correspondances[n4];
}
}
}
std::map<size_t, size_t> temp;
for (size_t i=0; i<inputMesh.numberOfVertices(); ++i) {
temp[correspondances[i]] = 0;
}
size_t nbCorrespondances = 0;
for (std::map<size_t, size_t>::iterator i = temp.begin();
i != temp.end(); ++i) {
i->second = nbCorrespondances++;
}
Vector<size_t>* pNewCorrespondances
= new Vector<size_t>(inputMesh.numberOfVertices());
Vector<size_t>& newCorrespondances = *pNewCorrespondances;
for (size_t i=0; i<inputMesh.numberOfVertices(); ++i) {
newCorrespondances[i] = temp[correspondances[i]];
}
VerticesCorrespondance* vc
= new VerticesCorrespondance(nbCorrespondances,
pNewCorrespondances);
__mesh = new Structured3DMesh(shape,
vc);
}
void MeshPeriodizer::run(const bool& builtLocalizationTools)
{
switch ((*__input).type()) {
case Mesh::cartesianHexahedraMesh: {
this->__build<Structured3DMesh>(builtLocalizationTools);
break;
}
default: {
throw ErrorHandler(__FILE__,__LINE__,
"not implemented: unexpected mesh type",
ErrorHandler::unexpected);
}
}
}
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