Mercurial > dive4elements > river
changeset 3246:229e9b27ce15
New Distance helper module.
flys-artifacts/trunk@4879 c6561f87-3c4e-4783-a992-168aeb5c3f6f
| author | Felix Wolfsteller <felix.wolfsteller@intevation.de> |
|---|---|
| date | Fri, 06 Jul 2012 09:34:51 +0000 |
| parents | dd3ddc8ecb14 |
| children | 638b1da85450 |
| files | flys-artifacts/ChangeLog flys-artifacts/src/main/java/de/intevation/flys/artifacts/math/Distance.java |
| diffstat | 2 files changed, 20 insertions(+), 0 deletions(-) [+] |
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--- a/flys-artifacts/ChangeLog Fri Jul 06 09:32:45 2012 +0000 +++ b/flys-artifacts/ChangeLog Fri Jul 06 09:34:51 2012 +0000 @@ -1,3 +1,8 @@ +2012-07-07 Felix Wolfsteller <felix.wolfsteller@intevation.de> + + * src/main/java/de/intevation/flys/artifacts/math/Distance.java: + New distance helper module. + 2012-07-07 Christian Lins <christian.lins@intevation.de> * src/main/java/de/intevation/flys/collections/FLYSArtifactCollection.java:
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/flys-artifacts/src/main/java/de/intevation/flys/artifacts/math/Distance.java Fri Jul 06 09:34:51 2012 +0000 @@ -0,0 +1,15 @@ +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; + } +} +// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :