Mercurial > dive4elements > gnv-client
comparison gnv-artifacts/src/main/java/de/intevation/gnv/math/ConstantFunction.java @ 1119:7c4f81f74c47
merged gnv-artifacts
| author | Thomas Arendsen Hein <thomas@intevation.de> |
|---|---|
| date | Fri, 28 Sep 2012 12:14:00 +0200 |
| parents | f953c9a559d8 |
| children |
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| 1027:fca4b5eb8d2f | 1119:7c4f81f74c47 |
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| 1 /* | |
| 2 * Copyright (c) 2010 by Intevation GmbH | |
| 3 * | |
| 4 * This program is free software under the LGPL (>=v2.1) | |
| 5 * Read the file LGPL.txt coming with the software for details | |
| 6 * or visit http://www.gnu.org/licenses/ if it does not exist. | |
| 7 */ | |
| 8 | |
| 9 package de.intevation.gnv.math; | |
| 10 | |
| 11 import org.apache.commons.math.analysis.UnivariateRealFunction; | |
| 12 | |
| 13 /** | |
| 14 * Models a constant function to be used in function evaluation. | |
| 15 * | |
| 16 * @author <a href="mailto:sascha.teichmann@intevation.de">Sascha L. Teichmann</a> | |
| 17 */ | |
| 18 public class ConstantFunction | |
| 19 implements UnivariateRealFunction | |
| 20 { | |
| 21 /** | |
| 22 * The constant value. | |
| 23 */ | |
| 24 protected double value; | |
| 25 | |
| 26 /** | |
| 27 * Defaut constructor. | |
| 28 */ | |
| 29 public ConstantFunction() { | |
| 30 } | |
| 31 | |
| 32 /** | |
| 33 * Constructor to create a ConstantFunction with | |
| 34 * a given constant value. | |
| 35 * @param value The constant value. | |
| 36 */ | |
| 37 public ConstantFunction(double value) { | |
| 38 this.value = value; | |
| 39 } | |
| 40 | |
| 41 public double value(double x) { | |
| 42 return value; | |
| 43 } | |
| 44 } | |
| 45 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |