# HG changeset patch
# User Felix Wolfsteller <felix.wolfsteller@intevation.de>
# Date 1341567291 0
# Node ID 229e9b27ce1589679a9c5420f27e173e73fd30ef
# Parent  dd3ddc8ecb14982f29a33b8a884fcc8f94f63998
New Distance helper module.

flys-artifacts/trunk@4879 c6561f87-3c4e-4783-a992-168aeb5c3f6f

diff -r dd3ddc8ecb14 -r 229e9b27ce15 flys-artifacts/ChangeLog
--- 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:
diff -r dd3ddc8ecb14 -r 229e9b27ce15 flys-artifacts/src/main/java/de/intevation/flys/artifacts/math/Distance.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 :