Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/raster/IsoAttributeGenerator.java @ 593:b248531fa20b

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Added experimental support for extrapolation in "Horizontalschnitte" gnv-artifacts/trunk@648 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Sun, 31 Jan 2010 21:50:15 +0000
parents f7038820df2e
children c4156275c1e1
rev   line source
448
3cb2bea50456 Generate iso line classes according gnv-issues/issue108
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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1 package de.intevation.gnv.raster;
3cb2bea50456 Generate iso line classes according gnv-issues/issue108
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2
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f7038820df2e Added support to trace rasters to JTS multi polygons and multi line strings.
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3 /**
f7038820df2e Added support to trace rasters to JTS multi polygons and multi line strings.
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4 * @author Sascha L. Teichmann (sascha.teichmann@intevation.de)
f7038820df2e Added support to trace rasters to JTS multi polygons and multi line strings.
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5 */
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6 public class IsoAttributeGenerator
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7 implements IsoProducer.AttributeGenerator
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8 {
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9 protected Palette palette;
3cb2bea50456 Generate iso line classes according gnv-issues/issue108
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10
3cb2bea50456 Generate iso line classes according gnv-issues/issue108
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11 public IsoAttributeGenerator() {
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12 }
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parents:
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13
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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14 public IsoAttributeGenerator(Palette palette) {
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15 this.palette = palette;
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16 }
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17
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18 public Object generateAttribute(int neighbor1, int neighbor2) {
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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19 Palette.Entry e1 = palette.getEntryByIndex(neighbor1);
3cb2bea50456 Generate iso line classes according gnv-issues/issue108
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20 Palette.Entry e2 = palette.getEntryByIndex(neighbor2);
3cb2bea50456 Generate iso line classes according gnv-issues/issue108
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21
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22 if (e1 == null || e2 == null) {
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23 return null;
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24 }
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25
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26 double e1t = e1.getFrom();
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27 double e2f = e2.getTo();
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28
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29 return Double.valueOf(e2f >= e1t
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30 ? 0.5d*(e1t+e2f)
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31 : 0.5d*(e2.getTo()+e1.getFrom()));
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32 }
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33 }
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34 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8:
http://dive4elements.wald.intevation.org