page1
Interface_window
Data structure
Bool
display(Entity*)
Event*
get_events(Real_time,
Real_time)
Translator
Bool
inform_which_data_interval(Real_geo,
Real_geo)
Bool
translate_and_fill(Entity*,
Event*)
Action A:
Each time “camera” moved
Action B:
When it's needed,
Translator call new data.
A.1
B.1
B.2
B.3
Fig. Communication between the data structure and the graphical interface