annotate gnv-artifacts/src/main/java/de/intevation/gnv/raster/IsoAttributeGenerator.java @ 457:47ad9721e692

Added RasterObject for caching the Rastertiles to get a better performance. gnv-artifacts/trunk@509 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Tim Englich <tim.englich@intevation.de>
date Tue, 05 Jan 2010 14:12:03 +0000
parents 3cb2bea50456
children f7038820df2e
rev   line source
448
3cb2bea50456 Generate iso line classes according gnv-issues/issue108
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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1 package de.intevation.gnv.raster;
3cb2bea50456 Generate iso line classes according gnv-issues/issue108
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2
3cb2bea50456 Generate iso line classes according gnv-issues/issue108
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3 public class IsoAttributeGenerator
3cb2bea50456 Generate iso line classes according gnv-issues/issue108
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4 implements IsoPolygonSeriesProducer.AttributeGenerator
3cb2bea50456 Generate iso line classes according gnv-issues/issue108
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5 {
3cb2bea50456 Generate iso line classes according gnv-issues/issue108
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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6 protected Palette palette;
3cb2bea50456 Generate iso line classes according gnv-issues/issue108
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7
3cb2bea50456 Generate iso line classes according gnv-issues/issue108
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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8 public IsoAttributeGenerator() {
3cb2bea50456 Generate iso line classes according gnv-issues/issue108
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9 }
3cb2bea50456 Generate iso line classes according gnv-issues/issue108
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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10
3cb2bea50456 Generate iso line classes according gnv-issues/issue108
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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11 public IsoAttributeGenerator(Palette palette) {
3cb2bea50456 Generate iso line classes according gnv-issues/issue108
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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12 this.palette = palette;
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13 }
3cb2bea50456 Generate iso line classes according gnv-issues/issue108
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14
3cb2bea50456 Generate iso line classes according gnv-issues/issue108
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15 public Object generateAttribute(int neighbor1, int neighbor2) {
3cb2bea50456 Generate iso line classes according gnv-issues/issue108
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16 Palette.Entry e1 = palette.getEntryByIndex(neighbor1);
3cb2bea50456 Generate iso line classes according gnv-issues/issue108
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17 Palette.Entry e2 = palette.getEntryByIndex(neighbor2);
3cb2bea50456 Generate iso line classes according gnv-issues/issue108
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18
3cb2bea50456 Generate iso line classes according gnv-issues/issue108
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19 if (e1 == null || e2 == null) {
3cb2bea50456 Generate iso line classes according gnv-issues/issue108
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20 return null;
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21 }
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22
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23 double e1t = e1.getFrom();
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24 double e2f = e2.getTo();
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25
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26 return Double.valueOf(e2f >= e1t
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27 ? 0.5d*(e1t+e2f)
3cb2bea50456 Generate iso line classes according gnv-issues/issue108
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28 : 0.5d*(e2.getTo()+e1.getFrom()));
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29 }
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30 }
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31 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8:

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