void InflatorEngine::save_mesh(const std::string& filename,
const MatrixFr& vertices, const MatrixIr& faces, VectorF debug) {
VectorF flattened_vertices(vertices.rows() * vertices.cols());
std::copy(vertices.data(), vertices.data() + vertices.rows() *
vertices.cols(), flattened_vertices.data());
VectorI flattened_faces(faces.rows() * faces.cols());
std::copy(faces.data(), faces.data() + faces.rows() * faces.cols(),
flattened_faces.data());
VectorI voxels = VectorI::Zero(0);
Mesh::Ptr mesh = MeshFactory().load_data(
flattened_vertices, flattened_faces, voxels,
vertices.cols(), faces.cols(), 0).create_shared();
mesh->add_attribute("debug");
mesh->set_attribute("debug", debug);
MeshWriter::Ptr writer = MeshWriter::create(filename);
writer->with_attribute("debug");
writer->write_mesh(*mesh);
}
void copy_metadata(std::unique_ptr<DracoMesh>& draco_mesh, Mesh::Ptr mesh) {
const auto metadata = draco_mesh->GetMetadata();
if (metadata == nullptr) return;
const auto& attr_metadatas = metadata->attribute_metadatas();
for (const auto& attr_metadata : attr_metadatas) {
std::string name="";
attr_metadata->GetEntryString("name", &name);
if (name == "") continue;
auto uid = attr_metadata->att_unique_id();
const auto attr = draco_mesh->GetAttributeByUniqueId(uid);
const auto num_rows = attr->size();
const auto num_cols = attr->num_components();
VectorF data(num_rows * num_cols);
for (size_t i=0; i<num_rows; i++) {
attr->ConvertValue(draco::AttributeValueIndex(i),
data.data() + i*num_cols);
}
mesh->add_empty_attribute(name);
mesh->set_attribute(name, data);
}
}