view flys-artifacts/src/main/java/de/intevation/flys/artifacts/math/Distance.java @ 4768:99f9e371371b

Move distance calculation to Coordinate class. Use inheritance instead of composition in Anchor class. Made Anchor class static. Use epsilon equal comparision when checking for same station: Boy, do you ever learn that sharp equal comparison of doubles is not a clever idea!?
author Sascha L. Teichmann <teichmann@intevation.de>
date Fri, 04 Jan 2013 15:35:51 +0100
parents 229e9b27ce15
children
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package de.intevation.flys.artifacts.math;

/** Helper to calculate distance(s). */
public final class Distance {
    /** Return distance between two values. */
    public static double distance(double a, double b) {
        return Math.abs(a - b);
    }

    /** Return whether a and be are within a certain distance. */
    public static boolean within(double a, double b, double threshold) {
        return distance(a, b) <= threshold;
    }
}
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