fix(MeshOutput): better handle native output requirements

Author: BotellaA

bindings/python/src/mesh/core/light_regular_grid.cpp

@@ -46,13 +46,6 @@ namespace
             .def( pybind11::init< geode::Point< dimension >,
                 std::array< geode::index_t, dimension >,
                 std::array< geode::Vector< dimension >, dimension > >() )
-            .def( "vertex_attribute_manager",
-                &geode::Grid< dimension >::grid_vertex_attribute_manager,
-                pybind11::return_value_policy::reference )
-            .def( dimension == 2 ? "polygon_attribute_manager"
-                                 : "polyhedron_attribute_manager",
-                &geode::Grid< dimension >::cell_attribute_manager,
-                pybind11::return_value_policy::reference )
             .def( "native_extension",
                 &geode::LightRegularGrid< dimension >::native_extension );
     }

include/geode/mesh/io/geode/geode_bitsery_mesh_output.hpp

@@ -32,8 +32,18 @@
 #include <geode/mesh/core/bitsery_archive.hpp>
 
 #define BITSERY_WRITE( Mesh )                                                  \
+    bool is_saveable( const Mesh& mesh ) const final                           \
+    {                                                                          \
+        return mesh.impl_name() == OpenGeode##Mesh::impl_name_static();        \
+    }                                                                          \
+                                                                               \
     std::vector< std::string > write( const Mesh& mesh ) const final           \
     {                                                                          \
+        OPENGEODE_EXCEPTION(                                                   \
+            mesh.impl_name() == OpenGeode##Mesh::impl_name_static(),           \
+            "[Bitsery] Cannot save ", mesh.type_name(),                        \
+            " in native format because it is not ",                            \
+            OpenGeode##Mesh::impl_name() );                                    \
         std::ofstream file{ to_string( this->filename() ),                     \
             std::ofstream::binary };                                           \
         TContext context{};                                                    \