Mercurial > dive4elements > gnv-client
annotate gnv-artifacts/src/main/java/de/intevation/gnv/state/profile/verticalcrosssection/OutputHelper.java @ 845:797a6264b89b
Integrated the CacheCleaner for the ThematicDataCache
gnv-artifacts/trunk@961 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Tim Englich <tim.englich@intevation.de> |
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date | Tue, 20 Apr 2010 18:38:22 +0000 |
parents | 9058c08eac3a |
children | f953c9a559d8 |
rev | line source |
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521
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1 package de.intevation.gnv.state.profile.verticalcrosssection; |
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2 |
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3 import de.intevation.gnv.jfreechart.CompactXYItems; |
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4 import de.intevation.gnv.jfreechart.PolygonSeries; |
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5 |
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6 import de.intevation.gnv.math.Interpolation3D; |
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7 |
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8 import gnu.trove.TDoubleArrayList; |
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9 |
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10 import org.apache.log4j.Logger; |
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11 |
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12 /** |
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13 * @author <a href="mailto:sascha.teichmann@intevation.de">Sascha L. Teichmann</a> |
521
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14 */ |
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15 public class OutputHelper |
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16 { |
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17 private static Logger log = Logger.getLogger(OutputHelper.class); |
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18 |
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19 public static final double EPS = 1e-5d; |
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20 |
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21 private OutputHelper() { |
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22 } |
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23 |
804
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24 |
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25 /** |
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26 * Creates a PolygonSeries representing the seabed used to be displayed in a |
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27 * 2D-chart. |
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28 * |
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29 * @param interpolation The interpolation which supports information about |
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30 * the max depth, the cell width and height. |
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31 * @param fill The fill color as integer. |
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32 * @return a PolygonSeries representing the seabed. |
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33 */ |
521
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34 public static PolygonSeries createSeabedPolygon( |
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35 Interpolation3D interpolation, |
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36 Integer fill |
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37 ) { |
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38 double maxDepth = interpolation.getMaxDepth(); |
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39 double cellWidth = interpolation.getCellWidth(); |
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40 double cellHeight = interpolation.getCellHeight(); |
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41 |
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42 double [] depths = interpolation.getDepths(); |
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43 |
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44 double x = 0d; |
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45 |
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46 TDoubleArrayList vertices = new TDoubleArrayList(); |
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47 |
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48 PolygonSeries ps = new PolygonSeries(); |
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49 |
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50 for (int i = 0; i < depths.length; ++i, x += cellWidth) { |
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51 double depth = depths[i]; |
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52 |
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53 if (vertices.isEmpty()) { |
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54 if (Double.isNaN(depth) || depth == maxDepth) { |
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55 continue; |
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56 } |
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57 if (depth > 0d) depth = 0d; |
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58 vertices.add(x); vertices.add(maxDepth); |
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59 vertices.add(x); vertices.add(depth); |
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60 vertices.add(x+cellWidth); vertices.add(depth); |
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61 } |
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62 else { // in polygon |
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63 if (Double.isNaN(depth) || depth == maxDepth) { |
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64 vertices.add(x); vertices.add(maxDepth); |
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65 ps.addRing(new CompactXYItems(vertices.toNativeArray())); |
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66 vertices.reset(); |
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67 } |
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68 else { |
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69 if (depth > 0d) depth = 0d; |
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70 int N = vertices.size(); |
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71 if (N > 2 && Math.abs(depth - vertices.get(N-1)) < EPS) { |
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72 vertices.set(N-2, x+cellWidth); |
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73 } |
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74 else { |
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75 vertices.add(vertices.get(N-2)); vertices.add(depth); |
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76 vertices.add(x+cellWidth); vertices.add(depth); |
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77 } |
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78 } |
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79 } |
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80 } // for all depths |
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81 |
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82 if (!vertices.isEmpty()) { |
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83 vertices.add(vertices.get(vertices.size()-2)); |
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84 vertices.add(maxDepth); |
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85 ps.addRing(new CompactXYItems(vertices.toNativeArray())); |
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86 } |
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87 |
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88 if (ps.getItemCount() == 0) { |
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89 return null; |
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90 } |
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91 |
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92 ps.setAttribute("fill", fill); |
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93 |
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94 return ps; |
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95 } |
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96 } |
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97 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |