Mercurial > dive4elements > river
annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/math/Distance.java @ 4740:fb135e1dfa35
Added 'type' attribute to <dc:variable/> element. If an optional 'type' attribute is given
the result of the XPATH expression is interpreted as this type.
Valid values are 'number', 'bool', 'node' and 'nodeset'. All other defaults
to 'string' which also is the default if nor type is given.
| author | Sascha L. Teichmann <teichmann@intevation.de> |
|---|---|
| date | Wed, 02 Jan 2013 15:31:53 +0100 |
| parents | 229e9b27ce15 |
| children |
| rev | line source |
|---|---|
|
3246
229e9b27ce15
New Distance helper module.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
diff
changeset
|
1 package de.intevation.flys.artifacts.math; |
|
229e9b27ce15
New Distance helper module.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
diff
changeset
|
2 |
|
229e9b27ce15
New Distance helper module.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
diff
changeset
|
3 /** Helper to calculate distance(s). */ |
|
229e9b27ce15
New Distance helper module.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
diff
changeset
|
4 public final class Distance { |
|
229e9b27ce15
New Distance helper module.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
diff
changeset
|
5 /** Return distance between two values. */ |
|
229e9b27ce15
New Distance helper module.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
diff
changeset
|
6 public static double distance(double a, double b) { |
|
229e9b27ce15
New Distance helper module.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
diff
changeset
|
7 return Math.abs(a - b); |
|
229e9b27ce15
New Distance helper module.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
diff
changeset
|
8 } |
|
229e9b27ce15
New Distance helper module.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
diff
changeset
|
9 |
|
229e9b27ce15
New Distance helper module.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
diff
changeset
|
10 /** Return whether a and be are within a certain distance. */ |
|
229e9b27ce15
New Distance helper module.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
diff
changeset
|
11 public static boolean within(double a, double b, double threshold) { |
|
229e9b27ce15
New Distance helper module.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
diff
changeset
|
12 return distance(a, b) <= threshold; |
|
229e9b27ce15
New Distance helper module.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
diff
changeset
|
13 } |
|
229e9b27ce15
New Distance helper module.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
diff
changeset
|
14 } |
|
229e9b27ce15
New Distance helper module.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
diff
changeset
|
15 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |