view gnv-artifacts/src/main/java/de/intevation/gnv/math/L1Comparator.java @ 763:e4d1fded433b

Bugfix: The Description of an InputData-Object will now only be fetched if the Name of the data of the Current State is equal to the Name of the InputData-Object. gnv-artifacts/trunk@818 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Tim Englich <tim.englich@intevation.de>
date Mon, 22 Mar 2010 12:52:09 +0000
parents ab29e4ff2fda
children b1f5f2a8840f
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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() {
    }

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

    public void setReference(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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