Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/raster/PolygonDatasetProducer.java @ 469:62fc63d0f71d

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Added a new State in Product Verticalprofile in Timeseriespoints. Now it will be displayed the Years where measurements happened and than only the dates of the chosen Year will be fetched and displayed. gnv-artifacts/trunk@532 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Tim Englich <tim.englich@intevation.de>
date Tue, 12 Jan 2010 12:42:53 +0000
parents f7038820df2e
children 1bf058f1a2d1
rev   line source
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1 package de.intevation.gnv.raster;
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2
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3 import java.util.List;
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4 import java.util.HashMap;
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5
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6 import gnu.trove.TDoubleArrayList;
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7
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8 import de.intevation.gnv.raster.Vectorizer.Edge;
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9
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10 import de.intevation.gnv.jfreechart.PolygonSeries;
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11 import de.intevation.gnv.jfreechart.PolygonDataset;
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12 import de.intevation.gnv.jfreechart.CompactXYItems;
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13
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14 /**
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15 * @author Sascha L. Teichmann (sascha.teichmann@intevation.de)
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16 */
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17 public class PolygonDatasetProducer
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18 extends AbstractProducer
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19 {
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20 protected HashMap<Integer, PolygonSeries> polygonSeries;
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21
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22 protected PolygonDatasetProducer() {
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23 }
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24
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25 public PolygonDatasetProducer(
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26 double minX, double minY,
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27 double maxX, double maxY
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28
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29 ) {
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30 super(minX, minY, maxX, maxY);
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31 polygonSeries = new HashMap<Integer, PolygonSeries>();
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32 }
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33
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34 public void handleRings(
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35 List<Edge> rings,
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36 int value,
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37 int width,
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38 int height
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39 ) {
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40 if (value == -1) {
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41 return;
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42 }
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43
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44 Integer v = Integer.valueOf(value);
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45
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46 PolygonSeries ps = polygonSeries.get(v);
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47
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48 if (ps == null) {
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49 polygonSeries.put(v, ps = new PolygonSeries());
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50 ps.setAttribute("fill", v);
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51 }
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52
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53 TDoubleArrayList vertices = new TDoubleArrayList();
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54
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55 /* minX = 0*m1 + b1 <=> b1 = minX
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56 * maxX = (width-1)*m1 + b1
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57 * m1 = (maxX - minX)/(width-1)
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58 */
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59
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60 double b1 = minX;
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61 double m1 = width != 1
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62 ? (maxX - minX)/(width-1)
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63 : 0d;
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64
437
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65 double b2 = minY;
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66 double m2 = height != 1
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67 ? (maxY - minY)/(height-1)
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68 : 0d;
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69
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70 for (Edge head: rings) {
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71 Edge current = head;
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72 do {
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73 vertices.add(m1*(current.a % width) + b1);
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74 vertices.add(m2*(current.a / width) + b2);
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75 }
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76 while ((current = current.next) != head);
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77 ps.addRing(new CompactXYItems(vertices.toNativeArray()));
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78 vertices.clear();
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79 }
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80 }
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81
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82 public PolygonDataset getPolygonDataset() {
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83 return new PolygonDataset(polygonSeries.values());
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84 }
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85 }
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86 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8:
http://dive4elements.wald.intevation.org