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rAKA/src/mesh_utils/boost_graph_converter.cc
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boost_graph_converter.cc
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#include "boost_graph_converter.hh"
#include "mesh.hh"
#include "mesh_iterators.hh"
/* -------------------------------------------------------------------------- */
#include <boost/graph/graphviz.hpp>
#include <map>
/* -------------------------------------------------------------------------- */
namespace akantu {
BoostGraphConverter::BoostGraphConverter(const Mesh & mesh) {
// adding all vertices
auto add_vertex = [&](auto element) {
auto && vertex = boost::add_vertex(this->graph);
element_to_vertex[element] = vertex;
vertex_to_element[vertex] = element;
};
// add_vertex(ElementNull);
auto && mesh_facets = mesh.getMeshFacets();
for_each_element(
mesh, [&](auto && element) { add_vertex(element); },
_element_kind = _ek_regular);
for_each_element(
mesh_facets, [&](auto && element) { add_vertex(element); },
_spatial_dimension = _all_dimensions);
for_each_element(
mesh, [&](auto && element) { add_vertex(element); },
_element_kind = _ek_cohesive);
auto get_vertex = [&](auto && element) {
if (element == ElementNull) {
return -1;
}
auto it = element_to_vertex.find(element);
if (it == element_to_vertex.end()) {
AKANTU_EXCEPTION("Element " << element << " not in element to vertex");
}
return it->second;
};
auto add_edge = [&](auto && element1, auto && element2,
EdgeType type = _none) {
auto vertex1 = get_vertex(element1);
auto vertex2 = get_vertex(element2);
if (vertex1 == -1 or vertex2 == -1) {
return;
}
// std::cout << element1 << " -> " << element2 << " " << type << std::endl;
auto && data = boost::add_edge(vertex1, vertex2, graph);
edge_type[data.first] = type;
};
auto add_neighbors = [&](auto && element) {
const auto & element_facets =
mesh_facets.getSubelementToElement().get(element);
for (auto && facet : element_facets) {
add_edge(element, facet, _up);
const auto & connected_elements_to_facets =
const_cast<const Mesh &>(mesh_facets).getElementToSubelement(facet);
for (auto && celement : connected_elements_to_facets) {
add_edge(facet, celement, _down);
}
}
};
// adding edges
for_each_element(mesh, add_neighbors, _element_kind = _ek_regular);
for (auto s : arange(1, mesh.getSpatialDimension())) {
for_each_element(mesh_facets, add_neighbors, _spatial_dimension = s);
}
for_each_element(mesh, add_neighbors, _element_kind = _ek_cohesive);
}
void BoostGraphConverter::toGraphviz(const std::string & filename) const {
std::ofstream fout;
fout.open(filename);
boost::write_graphviz(
fout, graph,
[&](std::ostream & out, vertex_descriptor vertex) {
auto it = vertex_to_element.find(vertex);
if (it == vertex_to_element.end()) {
return;
}
auto && element = it->second;
std::array<std::string, 4> colors{"gold", "cadetblue1", "coral1",
"antiquewhite2"};
std::string color{"deeppink4"}, bgcolor{"deeppink4"};
if (element != ElementNull) {
color = bgcolor = colors[Mesh::getSpatialDimension(element.type)];
}
out << "[label=\"" << std::to_string(element)
<< "\", bgcolor=" << bgcolor << ", color=" << color << "]";
},
[&](std::ostream & out, edge_descriptor edge) {
auto && type = edge_type.at(edge);
std::map<EdgeType, std::string> colors{
{_none, "black"}, {_up, "darkorange"}, {_down, "blue2"}};
out << "[color=" << colors[type] << "]";
});
}
} // namespace akantu
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