public Value eval(RCvalue args) throws EvalException {
if (args.size() != 2) throw new EvalException("usage: reduce(polygon, errtol])");
PolygonValue pv1 = (PolygonValue) args.value(0);
PolygonValue pv2 = (PolygonValue) args.value(1);
boolean isContain = pv1.polygon().contains(pv2.polygon());
double contain = 0;
if (isContain) {
contain = 1; // we don't have a boolean factory now.
}
return ValueFactory.create(contain);
}
