teichmann@5863: /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
teichmann@5863:  * Software engineering by Intevation GmbH
teichmann@5863:  *
teichmann@5994:  * This file is Free Software under the GNU AGPL (>=v3)
teichmann@5863:  * and comes with ABSOLUTELY NO WARRANTY! Check out the
teichmann@5994:  * documentation coming with Dive4Elements River for details.
teichmann@5863:  */
teichmann@5863: 
teichmann@5831: package org.dive4elements.river.artifacts.math;
felix@3246: 
felix@3246: /** Helper to calculate distance(s). */
felix@3246: public final class Distance {
felix@3246:     /** Return distance between two values. */
felix@3246:     public static double distance(double a, double b) {
felix@3246:         return Math.abs(a - b);
felix@3246:     }
felix@3246: 
felix@3246:     /** Return whether a and be are within a certain distance. */
felix@3246:     public static boolean within(double a, double b, double threshold) {
felix@3246:         return distance(a, b) <= threshold;
felix@3246:     }
felix@3246: }
felix@3246: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :