Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/raster/IsoPolygonSeriesProducer.java @ 521:1bf058f1a2d1

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Generate seabed polygon to "Profilschnitte". gnv-artifacts/trunk@615 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Sun, 24 Jan 2010 20:24:03 +0000
parents f7038820df2e
children b1f5f2a8840f
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.ArrayList;
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4 import java.util.Collection;
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5
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6 import org.apache.log4j.Logger;
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7
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8 import gnu.trove.TIntObjectHashMap;
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9 import gnu.trove.TDoubleArrayList;
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10
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11 import de.intevation.gnv.raster.Vectorizer.Edge;
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12
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13 import de.intevation.gnv.math.IJKey;
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14
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15 import de.intevation.gnv.jfreechart.PolygonSeries;
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16 import de.intevation.gnv.jfreechart.CompactXYItems;
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17
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18 /**
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19 * @author Sascha L. Teichmann (sascha.teichmann@intevation.de)
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20 */
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21 public class IsoPolygonSeriesProducer
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22 extends IsoProducer
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23 {
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24 private static Logger log = Logger.getLogger(
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25 IsoPolygonSeriesProducer.class);
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26
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27 public static final Float LINE_WIDTH = Float.valueOf(0.1f);
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28
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29 public IsoPolygonSeriesProducer(
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30 double minX, double minY,
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31 double maxX, double maxY
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32 ) {
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33 super(minX, minY, maxX, maxY);
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34 }
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35
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36 public Collection<PolygonSeries> getSeries() {
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37 return getSeries(null);
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38 }
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39
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40 public Collection<PolygonSeries> getSeries(
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41 AttributeGenerator attributeGenerator
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42 ) {
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43 ArrayList<PolygonSeries> series = new ArrayList<PolygonSeries>();
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44
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45 double b1 = minX;
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46 double m1 = width != 1
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47 ? (maxX - minX)/(width-1)
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48 : 0d;
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49
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50 double b2 = minY;
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51 double m2 = height != 1
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52 ? (maxY - minY)/(height-1)
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53 : 0d;
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54
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55 TDoubleArrayList vertices = new TDoubleArrayList();
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56
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57 for (IJKey key: joinPairs()) {
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58 PolygonSeries ps = new PolygonSeries();
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59
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60 // process complete
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61 ArrayList<Edge> completeList = complete.get(key);
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62 if (completeList != null) {
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63 for (Edge head: completeList) {
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64 Edge current = head;
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65 do {
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66 vertices.add(m1*(current.a % width) + b1);
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67 vertices.add(m2*(current.a / width) + b2);
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68 }
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69 while ((current = current.next) != head);
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70 // add head again to close shape
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71 vertices.add(m1*(head.a % width) + b1);
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72 vertices.add(m2*(head.a / width) + b2);
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73 ps.addRing(new CompactXYItems(vertices.toNativeArray()));
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74 vertices.reset();
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75 }
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76 }
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77
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78 // process open
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79 TIntObjectHashMap map = commonOpen.get(key);
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80
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81 if (map != null) {
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82 for (Edge head: headList(map)) {
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83
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84 head = Vectorizer.simplify(head, width);
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85 Edge current = head, last = head;
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86 do {
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87 vertices.add(m1*(current.a % width) + b1);
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88 vertices.add(m2*(current.a / width) + b2);
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89 last = current;
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90 }
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91 while ((current = current.next) != null);
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92 // add b from tail
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93 vertices.add(m1*(last.b % width) + b1);
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94 vertices.add(m2*(last.b / width) + b2);
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95 ps.addRing(new CompactXYItems(vertices.toNativeArray()));
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96 vertices.reset();
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97 } // for all in common open
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98 } // if map defined for key
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99
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100 if (ps.getItemCount() > 0) {
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101 series.add(ps);
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102 if (attributeGenerator != null) {
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103 Object attribute = attributeGenerator
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104 .generateAttribute(key.i, key.j);
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105
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106 if (attribute != null) {
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107 ps.setAttribute("label", attribute);
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108 }
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109 }
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110 ps.setAttribute("line.width", LINE_WIDTH);
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111 }
437
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112 } // for all pairs
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113
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114 return series;
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115 }
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116 }
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117 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8:
http://dive4elements.wald.intevation.org