:- object(bounded_point,
imports(bounded_coordinate),
instantiates(class),
specializes(point)).
:- info([
version is 1.1,
date is 2000/10/31,
author is 'Paulo Moura',
comment is 'Two dimensional point moving in a constrained area.',
source is 'Example adopted from the SICStus Objects documentation.']).
:- uses(list).
move(X, Y) :-
::check_bounds(x, X),
::check_bounds(y, Y),
^^move(X, Y).
print :-
::print_bounds(x),
::print_bounds(y),
^^print.
instance_base_name(bp).
default_init_option(bounds(x)-(-10, 10)).
default_init_option(bounds(y)-(-10, 10)).
default_init_option(Default) :-
^^default_init_option(Default).
process_init_option(bounds(Coordinate)-(Min, Max)) :-
::set_bounds(Coordinate, Min, Max).
process_init_option(Option) :-
^^process_init_option(Option).
:- end_object.
