void Mesh_File_Reader::load(
Meshes & final_meshes,
const Cell_Target & cells,
const URI & circuit_source,
bool load_vertices,
bool load_triangles,
bool load_mapping,
bool load_triangle_strips)
{
Meshes meshes;
boost::filesystem::path mvd_file = uri_to_filename(circuit_source);
if (mvd_file == "" || boost::filesystem::extension(mvd_file) != ".mvd2")
{
throw_exception(Bad_Data_Source("Loading meshes: circuit_source '" +
circuit_source + "' "),
FATAL_LEVEL, __FILE__, __LINE__);
}
MVD_File_Parser mvd_parser(mvd_file);
mvd_parser.parse_file(cells);
for (Cell_Target::iterator cell_gid = cells.begin();
cell_gid != cells.end();
++cell_gid)
{
MVD_Cell_Index index = mvd_parser.cell_index(*cell_gid);
if (index == UNDEFINED_MVD_CELL_INDEX)
{
std::stringstream msg;
msg << "Loading meshes: bad cell target, neuron gid "
<< *cell_gid << " not in mvd file '" << mvd_file << "'";
throw_exception(Bad_Data(msg.str()),
FATAL_LEVEL, __FILE__, __LINE__);
}
const Label & label = mvd_parser.morphology_names()[index];
if (meshes.find(label) == meshes.end())
{
insert_new_or_updated(label, final_meshes, meshes,
load_vertices, load_triangles,
load_triangle_strips, load_mapping);
}
}
// Final insertion from local container to result
for (Meshes::iterator i = meshes.begin();
i != meshes.end();
++i)
{
// This insertion replaces old existing meshes with its updated
// version also
final_meshes.insert(i.label(), i.ptr());
}
}
void Mesh_File_Reader::insert_new_or_updated
(const std::string & name, Meshes & final_meshes, Meshes & meshes,
bool load_vertices, bool load_triangles, bool load_triangle_strips,
bool load_mapping)
{
Mesh_Ptr mesh;
// Serching if the mesh already exists
Meshes::iterator old_mesh = final_meshes.find(name);
if (old_mesh != final_meshes.end())
{
bool needs_vertices =
load_vertices && old_mesh->vertices().pointer() == 0;
bool needs_triangles =
load_triangles && old_mesh->triangles().pointer() == 0;
bool needs_triangle_strips =
load_triangle_strips && old_mesh->triangle_strip().pointer() == 0;
bool needs_mapping =
load_mapping && old_mesh->vertex_sections().pointer() == 0;
if (needs_vertices || needs_triangles ||
needs_triangle_strips || needs_mapping)
{
// Loading missing datasets into mesh variable
mesh = read(name, needs_vertices, needs_triangles,
needs_triangle_strips, needs_mapping);
// Add data not loaded from original mesh (if it has it)
if (!needs_vertices)
{
vertices(*mesh) = vertices(*old_mesh);
vertex_count(*mesh) = vertex_count(*old_mesh);
}
if (!needs_triangles)
{
triangles(*mesh) = triangles(*old_mesh);
triangle_count(*mesh) = triangle_count(*old_mesh);
}
if (!needs_triangle_strips)
{
triangles(*mesh) = triangles(*old_mesh);
triangle_count(*mesh) = triangle_count(*old_mesh);
}
if (!needs_mapping)
{
vertex_sections(*mesh) = vertex_sections(*old_mesh);
vertex_relative_distances(*mesh) =
vertex_relative_distances(*old_mesh);
}
normals(*mesh) = normals(*old_mesh);
}
}
else
{
mesh = read(name, load_vertices, load_triangles,
load_triangle_strips, load_mapping);
}
// Checking if something new has been read
if (mesh.get() == 0)
return;
// computing additionnal data from the raw data if needed
if (mesh->vertices().pointer() != 0 &&
(mesh->triangles().pointer() != 0 ||
mesh->triangle_strip().pointer() != 0) &&
mesh->normals().pointer() == 0)
{
compute_per_vertex_normals(*mesh);
}
// Writing binary file if the whole mesh has been loaded and the binary
// file doesn't exist yet.
Filename binary_filename(_mesh_path / (name + ".bin"));
if(!boost::filesystem::exists(binary_filename))
{
if (mesh->vertices().pointer() != 0 &&
mesh->triangles().pointer() != 0 &&
mesh->triangle_strip().pointer() != 0 &&
mesh->vertex_sections().pointer() != 0)
{
try
{
Mesh_Binary_File_Writer writer;
writer.write_mesh(binary_filename, *mesh);
}
catch (IO_Error)
{
std::cerr << "Error when writing the Binary file !\n";
}
}
}
if (old_mesh == final_meshes.end())
{
final_meshes.insert(name, mesh);
}
else
{
vertices(*old_mesh) = vertices(*mesh);
vertex_count(*old_mesh) = vertex_count(*mesh);
triangles(*old_mesh) = triangles(*mesh);
triangle_count(*old_mesh) = triangle_count(*mesh);
vertex_sections(*old_mesh) = vertex_sections(*mesh);
vertex_relative_distances(*old_mesh) = vertex_relative_distances(*mesh);
normals(*old_mesh) = normals(*mesh);
}
}