Mercurial > dive4elements > river
comparison artifacts/src/main/java/org/dive4elements/river/artifacts/model/sq/LogSQ.java @ 6821:1c3b2f7dc9a4
S/Q relation: Added forgotten class.
| author | Sascha L. Teichmann <teichmann@intevation.de> |
|---|---|
| date | Wed, 14 Aug 2013 11:01:16 +0200 |
| parents | |
| children | 84929f882fa2 |
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| 6820:f48d45e760d0 | 6821:1c3b2f7dc9a4 |
|---|---|
| 1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde | |
| 2 * Software engineering by Intevation GmbH | |
| 3 * | |
| 4 * This file is Free Software under the GNU AGPL (>=v3) | |
| 5 * and comes with ABSOLUTELY NO WARRANTY! Check out the | |
| 6 * documentation coming with Dive4Elements River for details. | |
| 7 */ | |
| 8 | |
| 9 package org.dive4elements.river.artifacts.model.sq; | |
| 10 | |
| 11 public class LogSQ extends SQ { | |
| 12 | |
| 13 public static final View LOG_SQ_VIEW = new View() { | |
| 14 @Override | |
| 15 public double getS(SQ sq) { | |
| 16 return ((LogSQ)sq).getLogS(); | |
| 17 } | |
| 18 | |
| 19 @Override | |
| 20 public double getQ(SQ sq) { | |
| 21 return ((LogSQ)sq).getLogQ(); | |
| 22 } | |
| 23 }; | |
| 24 | |
| 25 public static final Factory LOG_SQ_FACTORY = new Factory() { | |
| 26 @Override | |
| 27 public SQ createSQ(double s, double q) { | |
| 28 return new LogSQ(s, q); | |
| 29 } | |
| 30 }; | |
| 31 | |
| 32 protected double logS; | |
| 33 protected double logQ; | |
| 34 | |
| 35 protected boolean logTrans; | |
| 36 | |
| 37 public LogSQ() { | |
| 38 } | |
| 39 | |
| 40 public LogSQ(double s, double q) { | |
| 41 super(s, q); | |
| 42 } | |
| 43 | |
| 44 /** important: We cannot process negative s/q. */ | |
| 45 @Override | |
| 46 public boolean isValid() { | |
| 47 return super.isValid() && s > 0d && q > 0d; | |
| 48 } | |
| 49 | |
| 50 protected void ensureLogTrans() { | |
| 51 if (!logTrans) { | |
| 52 logTrans = true; | |
| 53 logS = Math.log(s); | |
| 54 logQ = Math.log(q); | |
| 55 } | |
| 56 } | |
| 57 | |
| 58 public double getLogS() { | |
| 59 ensureLogTrans(); | |
| 60 return logS; | |
| 61 } | |
| 62 | |
| 63 public double getLogQ() { | |
| 64 ensureLogTrans(); | |
| 65 return logQ; | |
| 66 } | |
| 67 } | |
| 68 |