Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/artifacts/model/ZoomScale.java @ 7152:8c169743f4d0

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Noted insights.
author Felix Wolfsteller <felix.wolfsteller@intevation.de>
date Thu, 26 Sep 2013 08:38:12 +0200
parents af13ceeba52a
children fac461c67d24
rev   line source
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4897a58c8746 River artifacts: Added new copyright headers.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 5838
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
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Sascha L. Teichmann <teichmann@intevation.de>
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2 * Software engineering by Intevation GmbH
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3 *
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4 * This file is Free Software under the GNU AGPL (>=v3)
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the
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6 * documentation coming with Dive4Elements River for details.
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7 */
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8
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9 package org.dive4elements.river.artifacts.model;
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10
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11 import java.util.HashMap;
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12 import java.util.Map;
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13 import java.util.Set;
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14 import java.util.TreeMap;
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15
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16 import org.apache.log4j.Logger;
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17
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18 import org.dive4elements.river.artifacts.math.Linear;
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19
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20
7152
8c169743f4d0 Noted insights.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
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21 /** Has to do with adaptive smoothing based on current diagram extent. */
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22 public class ZoomScale
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23 {
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24 private static Logger logger = Logger.getLogger(ZoomScale.class);
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25
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26 private HashMap<String, TreeMap<Double, Double>> rivers;
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27
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28 public ZoomScale() {
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29 this.rivers = new HashMap<String, TreeMap<Double, Double>>();
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30 }
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31
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32 public ZoomScale(String river) {
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33 this();
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34 rivers.put(river, new TreeMap<Double, Double>());
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35 }
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36
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37 public double getRadius(String river, double lower, double upper) {
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38 double range = Math.abs(upper) - Math.abs(lower);
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39 TreeMap<Double, Double> ranges = rivers.get(river);
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40 if (ranges == null) {
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41 return 0.001;
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42 }
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43 Map.Entry<Double, Double> next = ranges.higherEntry(range);
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44 Map.Entry<Double, Double> prev = ranges.lowerEntry(range);
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45 double x0 = 0d;
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46 double x1 = 0d;
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47 double y0 = 0d;
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48 double y1 = 0d;
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49 if (prev == null && next != null) {
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50 x1 = next.getKey();
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51 y1 = next.getValue();
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52 }
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53 else if (prev != null && next == null) {
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54 return prev.getValue();
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55 }
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56 else {
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57 x0 = prev.getKey();
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58 x1 = next.getKey();
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59 y0 = prev.getValue();
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60 y1 = next.getValue();
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61 }
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62 return Linear.linear(range, x0, x1, y0, y1);
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63 }
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64
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65 public void addRiver(String river) {
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66 if (!this.rivers.containsKey(river)) {
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67 this.rivers.put(river, new TreeMap<Double, Double>());
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68 }
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69 }
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70
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71 public Set<String> getRivers() {
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72 return this.rivers.keySet();
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73 }
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74
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75 public void addRange(String river, double range, double radius) {
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76 if (this.rivers.containsKey(river)) {
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77 this.rivers.get(river).put(range, radius);
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78 }
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79 else {
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80 this.rivers.put(river, new TreeMap<Double, Double>());
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81 this.rivers.get(river).put(range, radius);
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82 }
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83 }
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84 }
http://dive4elements.wald.intevation.org