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rAKA/examples/io/dumper/example_dumpable_interface.cc
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example_dumpable_interface.cc
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/**
* @file example_dumpable_interface.cc
* @author Fabian Barras <fabian.barras@epfl.ch>
* @date Thu Jul 2 14:34:41 2015
*
* @brief Example of dumper::Dumpable interface.
*
* @section LICENSE
*
* Copyright (©) 2010-2011 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* Akantu 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 3 of the License, or (at your option) any
* later version.
*
* Akantu 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 Akantu. If not, see <http://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#include <limits>
#include <fstream>
#include <iostream>
/* -------------------------------------------------------------------------- */
#include "aka_common.hh"
#include "mesh.hh"
#include "element_group.hh"
#include "mesh_io.hh"
#include "mesh_io_msh.hh"
#include "mesh_utils.hh"
#include "dumper_paraview.hh"
#include "locomotive.hh"
#define PI 3.141592653589
/* -------------------------------------------------------------------------- */
using namespace akantu;
int main(int argc, char *argv[]) {
/*In this example, we present dumper::Dumpable which is an interface
for other classes who want to dump themselves.
Several classes of Akantu inheritate from Dumpable (Model, Mesh, ...).
In this example we reproduce the same tasks as example_dumper_low_level.cc
using this time Dumpable interface inherted by Mesh, NodeGroup and ElementGroup.
It is then advised to read first example_dumper_low_level.cc.*/
initialize(argc, argv);
/// To start let us load the swiss train mesh and its mesh data information.
UInt spatial_dimension = 2;
Mesh mesh(spatial_dimension);
mesh.read("swiss_train.msh");
mesh.createGroupsFromMeshData<std::string>("physical_names");
/* swiss_train.msh has the following physical groups that can be viewed with GMSH:
"$MeshFormat
2.2 0 8
$EndMeshFormat
$PhysicalNames
6
2 1 "rouge"
2 2 "blanc"
2 3 "lwheel_1"
2 4 "lwheel_2"
2 5 "rwheel_2"
2 6 "rwheel_1"
$EndPhysicalNames
..."
*/
/// Grouping nodes and elements belonging to train wheels (=four mesh data).
NodeGroup & wheels_nodes = mesh.createNodeGroup("wheels_nodes");
wheels_nodes.append(mesh.getElementGroup("lwheel_1").getNodeGroup());
wheels_nodes.append(mesh.getElementGroup("lwheel_2").getNodeGroup());
wheels_nodes.append(mesh.getElementGroup("rwheel_1").getNodeGroup());
wheels_nodes.append(mesh.getElementGroup("rwheel_2").getNodeGroup());
ElementGroup & wheels_elements = mesh.createElementGroup("wheels_elements", spatial_dimension, wheels_nodes);
wheels_elements.append(mesh.getElementGroup("lwheel_1"));
wheels_elements.append(mesh.getElementGroup("lwheel_2"));
wheels_elements.append(mesh.getElementGroup("rwheel_1"));
wheels_elements.append(mesh.getElementGroup("rwheel_2"));
/// Create dumper for the complete mesh and register it as default dumper.
DumperParaview dumper("train", "paraview/dumpable", false);
mesh.registerExternalDumper(dumper, "train", true);
mesh.addDumpMesh(mesh);
/// The dumper for the filtered mesh can be directly taken from the ElementGroup
/// and then registered as "wheels_elements" dumper.
DumperIOHelper & wheels = mesh.getGroupDumper("paraview_wheels_elements", "wheels_elements");
mesh.registerExternalDumper(wheels,"wheels_elements");
mesh.setDirectoryToDumper("wheels_elements","paraview/dumpable");
Array<Real> & node = mesh.getNodes();
UInt nb_nodes = mesh.getNbNodes();
/// This time 2D Array is created and a padding size of 3 is passed to NodalField
/// in order to warp train deformation on Paraview.
Array<Real> * displacement = new Array<Real>(nb_nodes,spatial_dimension);
UInt padding_size = 3;
/// The colour ElementTypeMapArray is directly attached to the Mesh object
/// to simplify the creation of dumper::Field.
ElementTypeMapArray<UInt> & colour = mesh.registerData<UInt>("colour");
mesh.initElementTypeMapArray(colour, 1, spatial_dimension, false, _ek_regular, true);
/// The creation of dumper::Field is completely handled by Dumpable interface.
/// The group name allows to create filter fields or standard fields if "all" is passed.
mesh.addDumpFieldExternal("displacement", mesh.createNodalField(displacement, "all",padding_size));
mesh.addDumpFieldExternal("color", mesh.createFieldFromAttachedData<UInt>("colour", "all", _ek_regular));
mesh.addDumpFieldExternalToDumper("wheels_elements", "displacement",
mesh.createNodalField(displacement, "wheels_elements",padding_size));
mesh.addDumpFieldExternalToDumper("wheels_elements", "colour",
mesh.createFieldFromAttachedData<UInt>("colour", "wheels_elements", _ek_regular));
/// Fill the ElementTypeMapArray colour.
ElementTypeMapArray<std::string> * phys_data = &(mesh.getData<std::string>("physical_names"));
Array<std::string> & txt_colour = (*phys_data)(_triangle_3);
Array<UInt> & id_colour = (colour)(_triangle_3);
for (UInt i = 0; i < txt_colour.getSize(); ++i) {
std::string phy_name = txt_colour[i];
if (phy_name == "rouge")
id_colour[i] = 3;
else if (phy_name == "blanc"||phy_name == "lwheel_1"||phy_name == "rwheel_1")
id_colour[i] = 2;
else
id_colour[i] = 1;
}
/// Apply displacement and wheels rotation.
Real tot_displacement = 50.;
Real radius = 1.;
UInt nb_steps = 500;
Real theta = tot_displacement/radius;
Array<Real> l_center(spatial_dimension);
Array<Real> r_center(spatial_dimension);
const Array<UInt> & lnode_1 = (mesh.getElementGroup("lwheel_1")).getNodes();
const Array<UInt> & lnode_2 = (mesh.getElementGroup("lwheel_2")).getNodes();
const Array<UInt> & rnode_1 = (mesh.getElementGroup("rwheel_1")).getNodes();
const Array<UInt> & rnode_2 = (mesh.getElementGroup("rwheel_2")).getNodes();
for (UInt i = 0; i < spatial_dimension; ++i) {
l_center(i) = node(14,i);
r_center(i) = node(2,i);
}
for (UInt i = 0; i < nb_steps; ++i) {
displacement->clear();
Real angle = (Real)i / (Real)nb_steps * theta;
applyRotation(l_center, angle, node, displacement, lnode_1);
applyRotation(l_center, angle, node, displacement, lnode_2);
applyRotation(r_center, angle, node, displacement, rnode_1);
applyRotation(r_center, angle, node, displacement, rnode_2);
for (UInt j = 0; j < nb_nodes; ++j) {
(*displacement)(j,0) += (Real)i / (Real)nb_steps *tot_displacement;
}
/// Dump call is finally made through Dumpable interface.
mesh.dump();
mesh.dump("wheels_elements");
}
return 0;
}
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