Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/state/profile/verticalcrosssection/OutputHelper.java @ 1115:f953c9a559d8

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Added license file and license headers. gnv-artifacts/trunk@1260 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Tue, 02 Nov 2010 17:46:55 +0000
parents 9058c08eac3a
children
rev   line source
1115
f953c9a559d8 Added license file and license headers.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 804
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1 /*
f953c9a559d8 Added license file and license headers.
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2 * Copyright (c) 2010 by Intevation GmbH
f953c9a559d8 Added license file and license headers.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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3 *
f953c9a559d8 Added license file and license headers.
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4 * This program is free software under the LGPL (>=v2.1)
f953c9a559d8 Added license file and license headers.
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5 * Read the file LGPL.txt coming with the software for details
f953c9a559d8 Added license file and license headers.
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6 * or visit http://www.gnu.org/licenses/ if it does not exist.
f953c9a559d8 Added license file and license headers.
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7 */
f953c9a559d8 Added license file and license headers.
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8
521
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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
804
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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 */
521
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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 :
http://dive4elements.wald.intevation.org