view gnv-artifacts/src/main/java/de/intevation/gnv/math/L1Comparator.java @ 448:3cb2bea50456

Generate iso line classes according gnv-issues/issue108 gnv-artifacts/trunk@496 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Sun, 03 Jan 2010 12:16:55 +0000
parents aec85d00d82c
children ab29e4ff2fda
line wrap: on
line source
package de.intevation.gnv.math;

import java.util.Comparator;

import com.vividsolutions.jts.geom.Coordinate;

/**
 *  @author Sascha L. Teichmann
 */
public  class L1Comparator
implements    Comparator
{
    private Coordinate ref;

    public L1Comparator(Coordinate ref) {
        this.ref = ref;
    }

    public int compare(Object a, Object b) {
        Coordinate pa = (Coordinate)a;
        Coordinate pb = (Coordinate)b;
        double da = Point2d.L1(ref, pa);
        double db = Point2d.L1(ref, pb);
        if (da < db) return -1;
        if (da > db) return +1;
        return 0;
    }
}
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