f5e660b9a3
git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@1114 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
71 lines
1.4 KiB
Plaintext
71 lines
1.4 KiB
Plaintext
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:- object(concentric,
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instantiates(constrained_relation)).
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:- info([
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version is 1.1,
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date is 2004/8/15,
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author is 'Paulo Moura',
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comment is 'Concentric polygons as a constrained binary relation.']).
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:- uses(list,
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[member/2, select/3]).
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descriptor_([x1, x2]).
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domain_(x1, polygon).
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domain_(x2, polygon).
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key_([x1, x2]).
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cardinality_(x1, 0, n).
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cardinality_(x2, 0, n).
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delete_option_(x1, cascade).
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delete_option_(x2, cascade).
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add_tuple([Polygon| Polygons]) :-
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Polygon::position(X, Y),
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forall(member(Polygon2, Polygons), {Polygon2::move(X, Y)}),
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^^add_tuple([Polygon| Polygons]).
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activ_points_(x1, before, []).
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activ_points_(x1, after, [move(_, _), transX(_), transY(_)]).
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activ_points_(x2, before, []).
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activ_points_(x2, after, [move(_, _), transX(_), transY(_)]).
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propagate(after, move(X, Y), Polygon, _, Tuple) :-
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select(Polygon, Tuple, Polygons),
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!,
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forall(
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(member(Polygon2, Polygons),\+ Polygon2::position(X, Y)),
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{Polygon2::move(X, Y)}).
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propagate(after, transX(X), Polygon, _, Tuple) :-
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select(Polygon, Tuple, Polygons),
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!,
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forall(
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(member(Polygon2, Polygons), \+ Polygon2::position(X, _)),
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{Polygon2::transX(X)}).
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propagate(after, transY(Y), Polygon, _, Tuple) :-
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select(Polygon, Tuple, Polygons),
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!,
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forall(
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(member(Polygon2, Polygons), \+ Polygon2::position(_, Y)),
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{Polygon2::transY(Y)}).
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:- end_object.
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