Mercurial > dive4elements > gnv-client
annotate gnv-artifacts/src/main/java/de/intevation/gnv/state/profile/verticalcrosssection/OutputHelper.java @ 1145:dfe1ac687c7f tip
added tags
author | Thomas Arendsen Hein <thomas@intevation.de> |
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date | Fri, 28 Sep 2012 12:16:15 +0200 |
parents | f953c9a559d8 |
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rev | line source |
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1115
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1 /* |
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2 * Copyright (c) 2010 by Intevation GmbH |
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3 * |
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4 * This program is free software under the LGPL (>=v2.1) |
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5 * Read the file LGPL.txt coming with the software for details |
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6 * or visit http://www.gnu.org/licenses/ if it does not exist. |
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7 */ |
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8 |
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9 package de.intevation.gnv.state.profile.verticalcrosssection; |
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10 |
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11 import de.intevation.gnv.jfreechart.CompactXYItems; |
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12 import de.intevation.gnv.jfreechart.PolygonSeries; |
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13 |
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14 import de.intevation.gnv.math.Interpolation3D; |
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15 |
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16 import gnu.trove.TDoubleArrayList; |
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17 |
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18 import org.apache.log4j.Logger; |
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19 |
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20 /** |
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21 * @author <a href="mailto:sascha.teichmann@intevation.de">Sascha L. Teichmann</a> |
521
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22 */ |
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23 public class OutputHelper |
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24 { |
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25 private static Logger log = Logger.getLogger(OutputHelper.class); |
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26 |
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27 public static final double EPS = 1e-5d; |
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28 |
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29 private OutputHelper() { |
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30 } |
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31 |
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32 |
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33 /** |
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34 * Creates a PolygonSeries representing the seabed used to be displayed in a |
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35 * 2D-chart. |
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36 * |
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37 * @param interpolation The interpolation which supports information about |
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38 * the max depth, the cell width and height. |
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39 * @param fill The fill color as integer. |
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40 * @return a PolygonSeries representing the seabed. |
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41 */ |
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42 public static PolygonSeries createSeabedPolygon( |
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43 Interpolation3D interpolation, |
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44 Integer fill |
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45 ) { |
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46 double maxDepth = interpolation.getMaxDepth(); |
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47 double cellWidth = interpolation.getCellWidth(); |
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48 double cellHeight = interpolation.getCellHeight(); |
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49 |
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50 double [] depths = interpolation.getDepths(); |
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51 |
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52 double x = 0d; |
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53 |
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54 TDoubleArrayList vertices = new TDoubleArrayList(); |
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55 |
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56 PolygonSeries ps = new PolygonSeries(); |
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57 |
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58 for (int i = 0; i < depths.length; ++i, x += cellWidth) { |
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59 double depth = depths[i]; |
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60 |
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61 if (vertices.isEmpty()) { |
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62 if (Double.isNaN(depth) || depth == maxDepth) { |
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63 continue; |
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64 } |
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65 if (depth > 0d) depth = 0d; |
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66 vertices.add(x); vertices.add(maxDepth); |
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67 vertices.add(x); vertices.add(depth); |
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68 vertices.add(x+cellWidth); vertices.add(depth); |
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69 } |
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70 else { // in polygon |
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71 if (Double.isNaN(depth) || depth == maxDepth) { |
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72 vertices.add(x); vertices.add(maxDepth); |
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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 else { |
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77 if (depth > 0d) depth = 0d; |
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78 int N = vertices.size(); |
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79 if (N > 2 && Math.abs(depth - vertices.get(N-1)) < EPS) { |
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80 vertices.set(N-2, x+cellWidth); |
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81 } |
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82 else { |
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83 vertices.add(vertices.get(N-2)); vertices.add(depth); |
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84 vertices.add(x+cellWidth); vertices.add(depth); |
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85 } |
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86 } |
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87 } |
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88 } // for all depths |
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89 |
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90 if (!vertices.isEmpty()) { |
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91 vertices.add(vertices.get(vertices.size()-2)); |
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92 vertices.add(maxDepth); |
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93 ps.addRing(new CompactXYItems(vertices.toNativeArray())); |
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94 } |
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95 |
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96 if (ps.getItemCount() == 0) { |
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97 return null; |
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98 } |
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99 |
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100 ps.setAttribute("fill", fill); |
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101 |
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102 return ps; |
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103 } |
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104 } |
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105 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |