Logtalk 2.26.2 files.

git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@1487 b08c6af1-5177-4d33-ba66-4b1c6b8b522a

Logtalk/examples/polygons/polygons.lgt

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+
+:- object(polygon,
+	instantiates(abstract_class),
+	specializes(object)).
+
+	:- info([
+		version is 1.2,
+		date is 2005/8/15,
+		author is 'Paulo Moura',
+		comment is 'Polygon predicates.']).
+
+	:- public(move/2).
+	:- mode(move(+integer, +integer), one).
+
+	:- public(trans_x/2).
+	:- mode(trans_x(+integer), one).
+
+	:- public(trans_y/2).
+	:- mode(trans_y(+integer), one).
+
+	:- public(number_of_sides/1).
+	:- mode(number_of_sides(?integer), zero_or_one).
+
+	:- public(position/2).
+	:- mode(position(?integer, ?integer), zero_or_one).
+
+	:- private(position_/2).
+	:- dynamic(position_/2).
+	:- mode(position_(?integer, ?integer), zero_or_one).
+
+	position(X, Y) :-
+		::position_(X, Y).
+
+	move(X, Y) :-
+		::retractall(position_(_, _)),
+		::assertz(position_(X, Y)).
+
+	trans_x(X) :-
+		::retractall(position_(_, Y)),
+		::assertz(position_(X, Y)).
+
+	trans_y(Y) :-
+		::retractall(position_(X, _)),
+		::assertz(position_(X, Y)).
+
+	default_init_option(position-(0, 0)).
+	default_init_option(Default) :-
+		^^default_init_option(Default).
+
+	process_init_option(position-(X, Y)) :-
+		::move(X, Y).
+	process_init_option(Option) :-
+		^^process_init_option(Option).
+
+:- end_object.
+
+
+
+
+:- object(triangle,
+	instantiates(class),
+	specializes(polygon)).
+
+	:- info([
+		version is 1.0,
+		date is 1998/3/23,
+		author is 'Paulo Moura',
+		comment is 'Triangle class.']).
+
+	number_of_sides(3).
+
+	instance_base_name(tri).
+
+:- end_object.
+
+
+
+
+:- object(square,
+	instantiates(class),
+	specializes(polygon)).
+
+	:- info([
+		version is 1.0,
+		date is 1998/3/23,
+		author is 'Paulo Moura',
+		comment is 'Square class.']).
+
+	number_of_sides(4).
+
+	instance_base_name(sq).
+
+:- end_object.
+
+
+
+
+
+:- object(pentagon,
+	instantiates(class),
+	specializes(polygon)).
+
+	:- info([
+		version is 1.0,
+		date is 1998/3/23,
+		author is 'Paulo Moura',
+		comment is 'Pentagon class.']).
+
+	number_of_sides(5).
+
+	instance_base_name(pen).
+
+:- end_object.
+
+
+
+
+:- object(hexagon,
+	instantiates(class),
+	specializes(polygon)).
+
+	:- info([
+		version is 1.0,
+		date is 1998/3/23,
+		author is 'Paulo Moura',
+		comment is 'Hexagon class.']).
+
+	number_of_sides(6).
+
+	instance_base_name(hex).
+
+:- end_object.
+
+
+
+
+:- object(concentric,
+	instantiates(constrained_relation)).
+
+	:- info([
+		version is 1.1,
+		date is 2004/8/15,
+		author is 'Paulo Moura',
+		comment is 'Concentric polygons as a constrained binary relation.']).
+
+	:- uses(list,
+		[member/2, select/3]).
+
+	descriptor_([x1, x2]).
+
+	domain_(x1, polygon).
+	domain_(x2, polygon).
+
+	key_([x1, x2]).
+
+	cardinality_(x1, 0, n).
+	cardinality_(x2, 0, n).
+
+	delete_option_(x1, cascade).
+	delete_option_(x2, cascade).
+
+	add_tuple([Polygon| Polygons]) :-
+		Polygon::position(X, Y),
+		forall(member(Polygon2, Polygons), {Polygon2::move(X, Y)}),
+		^^add_tuple([Polygon| Polygons]).
+
+	activ_points_(x1, before, []).
+	activ_points_(x1, after, [move(_, _), trans_x(_), trans_y(_)]).
+
+	activ_points_(x2, before, []).
+	activ_points_(x2, after, [move(_, _), trans_x(_), trans_y(_)]).
+
+	propagate(after, move(X, Y), Polygon, _, Tuple) :-
+		select(Polygon, Tuple, Polygons),
+		!,
+		forall(
+			(member(Polygon2, Polygons),\+ Polygon2::position(X, Y)),
+			{Polygon2::move(X, Y)}).
+
+	propagate(after, trans_x(X), Polygon, _, Tuple) :-
+		select(Polygon, Tuple, Polygons),
+		!,
+		forall(
+			(member(Polygon2, Polygons), \+ Polygon2::position(X, _)),
+			{Polygon2::trans_x(X)}).
+
+	propagate(after, trans_y(Y), Polygon, _, Tuple) :-
+		select(Polygon, Tuple, Polygons),
+		!,
+		forall(
+			(member(Polygon2, Polygons), \+ Polygon2::position(_, Y)),
+			{Polygon2::trans_y(Y)}).
+
+:- end_object.