sprintf(default_atransition, INIT_ATRANSITION);
defaults->get("DEFAULT_ATRANSITION", default_atransition);
sprintf(default_vtransition, INIT_VTRANSITION);
defaults->get("DEFAULT_VTRANSITION", default_vtransition);
default_transition_length = defaults->get("DEFAULT_TRANSITION_LENGTH", (double)1);
sprintf(default_atransition, INIT_ATRANSITION);
defaults->get("DEFAULT_ATRANSITION", default_atransition);
sprintf(default_vtransition, INIT_VTRANSITION);
defaults->get("DEFAULT_VTRANSITION", default_vtransition);
default_transition_length = defaults->get("DEFAULT_TRANSITION_LENGTH", (double)1);