fixed obj export for non-compact meshes

docs/.gitignore

 html
 latex
-doxygen
\ No newline at end of file
+doxygen
+_build
\ No newline at end of file

src/polymesh/formats.hh

@@ -51,13 +51,13 @@ bool load(std::string const& filename, Mesh& m, vertex_attribute<Pos3>& pos)
     {
         auto tmp_pos = m.vertices().make_attribute<std::array<float, 3>>();
         ok = detail::load<float>(filename, m, tmp_pos);
-        std::memcpy(pos.data(), tmp_pos.data(), sizeof(Pos3) * m.vertices().size());
+        std::memcpy(pos.data(), tmp_pos.data(), sizeof(Pos3) * m.all_vertices().size());
     }
     else
     {
         auto tmp_pos = m.vertices().make_attribute<std::array<double, 3>>();
         ok = detail::load<double>(filename, m, tmp_pos);
-        std::memcpy(pos.data(), tmp_pos.data(), sizeof(Pos3) * m.vertices().size());
+        std::memcpy(pos.data(), tmp_pos.data(), sizeof(Pos3) * m.all_vertices().size());
     }
 
     return ok;
@@ -72,13 +72,13 @@ void save(std::string const& filename, vertex_attribute<Pos3> const& pos)
     if (sizeof(Pos3) == sizeof(float) * 3)
     {
         auto tmp_pos = m.vertices().template make_attribute<std::array<float, 3>>();
-        std::memcpy(tmp_pos.data(), pos.data(), sizeof(Pos3) * m.vertices().size());
+        std::memcpy(tmp_pos.data(), pos.data(), sizeof(Pos3) * m.all_vertices().size());
         detail::save<float>(filename, tmp_pos);
     }
     else
     {
         auto tmp_pos = m.vertices().template make_attribute<std::array<double, 3>>();
-        std::memcpy(tmp_pos.data(), pos.data(), sizeof(Pos3) * m.vertices().size());
+        std::memcpy(tmp_pos.data(), pos.data(), sizeof(Pos3) * m.all_vertices().size());
         detail::save<double>(filename, tmp_pos);
     }
 }

src/polymesh/formats/obj.cc

@@ -94,8 +94,8 @@ void obj_writer<ScalarT>::write_mesh(vertex_attribute<std::array<ScalarT, 3>> co
                 *out << base_t + i;
             if (normal)
             {
-                *out << base_n + i;
                 *out << "/";
+                *out << base_n + i;
             }
         }
         *out << "\n";
@@ -151,8 +151,8 @@ void obj_writer<ScalarT>::write_mesh(vertex_attribute<std::array<ScalarT, 4>> co
                 *out << base_t + hi;
             if (normal)
             {
-                *out << base_n + hi;
                 *out << "/";
+                *out << base_n + hi;
             }
         }
         *out << "\n";