Mercurial > dive4elements > gnv-client
comparison gnv-artifacts/src/main/java/de/intevation/gnv/raster/IsoAttributeGenerator.java @ 448:3cb2bea50456
Generate iso line classes according gnv-issues/issue108
gnv-artifacts/trunk@496 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
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date | Sun, 03 Jan 2010 12:16:55 +0000 |
parents | |
children | f7038820df2e |
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447:92b7ccbf6163 | 448:3cb2bea50456 |
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1 package de.intevation.gnv.raster; | |
2 | |
3 public class IsoAttributeGenerator | |
4 implements IsoPolygonSeriesProducer.AttributeGenerator | |
5 { | |
6 protected Palette palette; | |
7 | |
8 public IsoAttributeGenerator() { | |
9 } | |
10 | |
11 public IsoAttributeGenerator(Palette palette) { | |
12 this.palette = palette; | |
13 } | |
14 | |
15 public Object generateAttribute(int neighbor1, int neighbor2) { | |
16 Palette.Entry e1 = palette.getEntryByIndex(neighbor1); | |
17 Palette.Entry e2 = palette.getEntryByIndex(neighbor2); | |
18 | |
19 if (e1 == null || e2 == null) { | |
20 return null; | |
21 } | |
22 | |
23 double e1t = e1.getFrom(); | |
24 double e2f = e2.getTo(); | |
25 | |
26 return Double.valueOf(e2f >= e1t | |
27 ? 0.5d*(e1t+e2f) | |
28 : 0.5d*(e2.getTo()+e1.getFrom())); | |
29 } | |
30 } | |
31 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8: |