Mesh_Ptr Mesh_File_Reader::read(
const Label & name,
bool load_vertices,
bool load_triangles,
bool load_triangle_strips,
bool load_mapping
) /* throw IO_Error */
{
Mesh_Ptr mesh_ptr(new Mesh());
Mesh &mesh = *mesh_ptr.get();
Filename binary_filename(_mesh_path / (name + ".bin"));
if(!boost::filesystem::exists(binary_filename))
{
Filename vertex_filename, triangle_filename,
triangle_strip_filename, mapping_filename;
if (load_vertices)
vertex_filename = _mesh_path / (name + ".vert");
if (load_triangles)
triangle_filename = _mesh_path / (name + ".tri");
if (load_triangle_strips)
triangle_strip_filename = _mesh_path / (name + ".strip");
if (load_mapping)
mapping_filename = _mesh_path / (name + ".map");
Mesh_ASCII_File_Parser parser;
parser.read_mesh(
vertex_filename,
triangle_filename,
triangle_strip_filename,
mapping_filename,
vertex_count(mesh),
triangle_count(mesh),
triangle_strip_length(mesh),
vertices(mesh),
vertex_sections(mesh),
vertex_relative_distances(mesh),
triangles(mesh),
triangle_strip(mesh));
} else {
Mesh_Binary_File_Parser parser;
parser.read_mesh(
binary_filename,
load_vertices,
load_triangles,
load_triangle_strips,
load_mapping,
vertex_count(mesh),
triangle_count(mesh),
triangle_strip_length(mesh),
vertices(mesh),
vertex_sections(mesh),
vertex_relative_distances(mesh),
triangles(mesh),
triangle_strip(mesh));
}
return mesh_ptr;
}
//----------------------------------------------------------------------
void
WalkmeshFileSerializer::importWalkmeshFile( Ogre::DataStreamPtr &stream
,WalkmeshFile *pDest )
{
uint32 triangle_count( 0 );
readUInt32( stream, triangle_count );
TriangleList triangles;
readVector( stream, triangles, triangle_count );
AccessList access;
readVector( stream, access, triangle_count );
WalkmeshTriangleList &triangle_list( pDest->getTriangles() );
triangle_list.clear();
triangle_list.reserve( triangle_count );
for( uint32 i(0); i < triangle_count; ++i )
{
Triangle &in_triangle( triangles[i] );
Access &in_access( access[i] );
WalkmeshTriangle tmp_triangle;
tmp_triangle.a = in_triangle.a;
tmp_triangle.b = in_triangle.b;
tmp_triangle.c = in_triangle.c;
tmp_triangle.access_side[0] = in_access.a;
tmp_triangle.access_side[1] = in_access.b;
tmp_triangle.access_side[2] = in_access.c;
triangle_list.push_back( tmp_triangle );
}
}
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);
}
}
