19 lines
378 B
Text
19 lines
378 B
Text
:- object(point(_X_, _Y_)).
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:- public([x/1, y/1, print/0]).
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x(_X_).
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y(_Y_).
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print :- logtalk::print_message(information, shapes, @point(_X_,_Y_)).
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:- end_object.
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:- object(circle(_X_, _Y_, _R_),
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extends(point(_X_, _Y_))).
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:- public([r/1]).
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r(_R_).
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print :- logtalk::print_message(information, shapes, @circle(_X_,_Y_,_R_)).
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:- end_object.
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