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package com.vividsolutions.jcs.conflate.polygonmatch;

import com.vividsolutions.jts.geom.Geometry;

public class OverlapMatcher extends IndependentCandidateMatcher {

    public double match(Geometry target, Geometry candidate) {

        //Impose the min to curb roundoff error in exact matches (a situation which

        //arose during testing (identical datasets)) [Jon Aquino]

        return Math.min(1, (2 * target.intersection(candidate).getArea())

            / (target.getArea() + candidate.getArea()));

    }

}