Mercurial > dive4elements > gnv-client
diff 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> |
|---|---|
| date | Sun, 03 Jan 2010 12:16:55 +0000 |
| parents | |
| children | f7038820df2e |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/gnv-artifacts/src/main/java/de/intevation/gnv/raster/IsoAttributeGenerator.java Sun Jan 03 12:16:55 2010 +0000 @@ -0,0 +1,31 @@ +package de.intevation.gnv.raster; + +public class IsoAttributeGenerator +implements IsoPolygonSeriesProducer.AttributeGenerator +{ + protected Palette palette; + + public IsoAttributeGenerator() { + } + + public IsoAttributeGenerator(Palette palette) { + this.palette = palette; + } + + public Object generateAttribute(int neighbor1, int neighbor2) { + Palette.Entry e1 = palette.getEntryByIndex(neighbor1); + Palette.Entry e2 = palette.getEntryByIndex(neighbor2); + + if (e1 == null || e2 == null) { + return null; + } + + double e1t = e1.getFrom(); + double e2f = e2.getTo(); + + return Double.valueOf(e2f >= e1t + ? 0.5d*(e1t+e2f) + : 0.5d*(e2.getTo()+e1.getFrom())); + } +} +// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8: