def _backend(self):
"""
Query function for the c++ backend object.
"""
if self.__backend is None:
# Construct the c++ backend object.
cpp_types = stringListToStdVectorString(self.__types)
cpp_coords = numpy2DArrayToStdVectorStdVectorDouble(
self.__lattice.sites())
cpp_possible_types = Backend.StdMapStringInt(self.__possible_types)
# Send in the coordinates and types to construct the backend configuration.
self.__backend = Backend.Configuration(cpp_coords, cpp_types,
cpp_possible_types)
# Return the backend.
return self.__backend
def _backend(self, possible_types):
"""
Query for the local configuration backend object.
:param possible_types: A dict with the global mapping of type strings
to integers.
:returns: The interactions object in C++
"""
if self.__backend is None:
# Construct the c++ backend object.
cpp_types = Backend.StdVectorString(self.__types)
cpp_coords = numpy2DArrayToStdVectorStdVectorDouble(self.__coordinates)
cpp_possible_types = Backend.StdMapStringInt(possible_types)
# Send in the coordinates and types to construct the backend configuration.
self.__backend = Backend.Configuration(cpp_coords,
cpp_types,
cpp_possible_types)
# Return the backend.
return self.__backend
def _update(self):
"""
Query for the update info.
:returns: The update stored on the class.
"""
if self.__cpp_update is None:
# Create the cpp update vector of maps.
self.__cpp_update = Backend.StdVectorStdMapStringInt()
# Take each entry in the update list.
for update_entry in self.__update:
# Convert to C++
cpp_map = Backend.StdMapStringInt()
for e in update_entry:
cpp_map[e[1]] = e[0]
# Add.
self.__cpp_update.push_back(cpp_map)
return self.__cpp_update
