38 lines
598 B
Plaintext
38 lines
598 B
Plaintext
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:- object(shape,
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instantiates(abstract_class),
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specializes(object)).
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:- info([
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author is 'Paulo Moura',
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version is 1.0,
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date is 2003/2/3,
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comment is 'Generic geometric shape.']).
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:- public(color/1).
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:- mode(color(?atom), zero_or_one).
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:- info(color/1, [
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comment is 'Shape color.',
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argnames is ['Color']]).
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:- public(position/2).
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:- mode(position(?integer, ?integer), zero_or_one).
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:- info(position/2, [
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comment is 'Shape position.',
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argnames is ['X', 'Y']]).
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color(red). % default shape color
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position(0, 0). % default shape position
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:- end_object.
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