view flys-artifacts/src/main/java/de/intevation/flys/artifacts/math/Distance.java @ 4214:e39ac9767a69

Implement UserService method to remove current user from session For being able to logout a user UserService must provide a method the remove the current user object from the session. Part of flys/issue916 (Logout: "Abmelden" Knopf mit Funktion belegen)
author Björn Ricks <bjoern.ricks@intevation.de>
date Tue, 23 Oct 2012 09:57:42 +0200
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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