Mercurial > dive4elements > river
comparison flys-artifacts/src/main/java/de/intevation/flys/artifacts/math/LinearRemap.java @ 452:343f248e4c8c
use correct kms and step width now now
flys-artifacts/trunk@1948 c6561f87-3c4e-4783-a992-168aeb5c3f6f
| author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
|---|---|
| date | Thu, 19 May 2011 09:24:08 +0000 |
| parents | 909196be11a0 |
| children | f0c1250d1e7b |
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| 451:73bc64c4a7b0 | 452:343f248e4c8c |
|---|---|
| 1 package de.intevation.flys.artifacts.math; | 1 package de.intevation.flys.artifacts.math; |
| 2 | |
| 3 import org.apache.log4j.Logger; | |
| 2 | 4 |
| 3 public class LinearRemap | 5 public class LinearRemap |
| 4 { | 6 { |
| 7 private static Logger logger = Logger.getLogger(LinearRemap.class); | |
| 8 | |
| 5 public static class Segment { | 9 public static class Segment { |
| 6 | 10 |
| 7 protected Segment next; | 11 protected Segment next; |
| 8 | 12 |
| 9 protected double from; | 13 protected double from; |
| 56 m = (y2 - y1)/(x2 - x1); | 60 m = (y2 - y1)/(x2 - x1); |
| 57 b = y1 - m*x1; | 61 b = y1 - m*x1; |
| 58 } | 62 } |
| 59 | 63 |
| 60 head = new Segment(from, to, m, b, head); | 64 head = new Segment(from, to, m, b, head); |
| 65 | |
| 66 if (logger.isDebugEnabled()) { | |
| 67 logger.debug("LinearRemap.add --------- enter"); | |
| 68 logger.debug(" range: [" + from + ", " + to + "]"); | |
| 69 logger.debug(" " + x1 + " -> " + y1 + " (" + head.eval(x1) + ")"); | |
| 70 logger.debug(" " + x2 + " -> " + y2 + " (" + head.eval(x2) + ")"); | |
| 71 logger.debug("LinearRemap.add --------- leave"); | |
| 72 } | |
| 61 } | 73 } |
| 62 | 74 |
| 63 public double eval(double pos, double x) { | 75 public double eval(double pos, double x) { |
| 64 Segment current = head; | 76 Segment current = head; |
| 65 | 77 |