fix(LightRegularGrid): Give access in python to the attribute managers with same name than meshes.

Author: MelchiorSchuh

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

@@ -41,6 +41,9 @@
         .def( pybind11::init< Point< dimension >,                              \
             std::array< index_t, dimension >,                                  \
             std::array< Vector< dimension >, dimension > >() )                 \
+        .def( "vertex_attribute_manager",                                      \
+            &Grid##dimension##D::grid_vertex_attribute_manager,                \
+            pybind11::return_value_policy::reference )                         \
         .def( "native_extension",                                              \
             &LightRegularGrid##dimension##D::native_extension )
 

bindings/python/tests/mesh/test-py-light-regular-grid.py

@@ -249,6 +249,14 @@ def test_attribute( grid ):
         raise ValueError( "[Test] Wrong attribute value" )
     if attribute.value( grid.nb_cells() - 1 ) != -1:
         raise ValueError( "[Test] Wrong attribute value" )
+    attribute = grid.vertex_attribute_manager().find_or_create_attribute_variable_double( "toto_vertex", 1 )
+    attribute.set_value( 10, 10 )
+    if attribute.value( 0 ) != 1:
+        raise ValueError( "[Test] Wrong attribute value" )
+    if attribute.value( 10 ) != 10:
+        raise ValueError( "[Test] Wrong attribute value" )
+    if attribute.value( grid.nb_cells() - 1 ) != 1:
+        raise ValueError( "[Test] Wrong attribute value" )
 
 def test_io(grid, filename):
     mesh.save_light_regular_grid3D(grid, filename)

include/geode/basic/attribute_manager.hpp

@@ -79,10 +79,11 @@ namespace geode
                 std::dynamic_pointer_cast< ReadOnlyAttribute< T > >(
                     find_attribute_base( name ) );
             OPENGEODE_EXCEPTION( attribute.get(),
-                "[AttributeManager::find_attribute] You have to create an "
-                "attribute before using it. "
-                "See find_or_create_attribute method and "
-                "derived classes of ReadOnlyAttribute." );
+                "[AttributeManager::find_attribute] Could not find attribute '",
+                name,
+                "'. You have to create an attribute before using it. See "
+                "find_or_create_attribute method and derived classes of "
+                "ReadOnlyAttribute." );
             return attribute;
         }