Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/artifacts/model/ZoomScale.java @ 9801:1d7a72a50183 3.2.x tip

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Assume Compose V2, consistently
author Tom Gottfried <tom@intevation.de>
date Thu, 23 Nov 2023 10:14:13 +0100
parents 0a5239a1e46e
children
rev   line source
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4897a58c8746 River artifacts: Added new copyright headers.
Sascha L. Teichmann <teichmann@intevation.de>
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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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0a5239a1e46e Upgrade to Log4j 2
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16 import org.apache.logging.log4j.Logger;
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17 import org.apache.logging.log4j.LogManager;
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18
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19 import org.dive4elements.river.artifacts.math.Linear;
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20
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21
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22 /** Has to do with adaptive smoothing based on current diagram extent. */
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23 public class ZoomScale
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24 {
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25 private static Logger log = LogManager.getLogger(ZoomScale.class);
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26
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27 private HashMap<String, TreeMap<Double, Double>> rivers;
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28
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29 public ZoomScale() {
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30 this.rivers = new HashMap<String, TreeMap<Double, Double>>();
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31 }
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32
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33 public ZoomScale(String river) {
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34 this();
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35 rivers.put(river, new TreeMap<Double, Double>());
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36 }
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37
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38 public double getRadius(String river, double lower, double upper) {
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39 if (lower > upper) {
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40 double buf = lower;
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41 lower = upper;
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42 upper = buf;
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43 }
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44 double range = Math.abs(upper) - Math.abs(lower);
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45 TreeMap<Double, Double> ranges = rivers.get(river);
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46 if (ranges == null) {
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47 TreeMap<Double, Double> defaultRanges = rivers.get("default");
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48 if (defaultRanges == null) {
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49 return 0.001;
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50 }
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51 ranges = defaultRanges;
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52 }
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53 Map.Entry<Double, Double> next = ranges.higherEntry(range);
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54 Map.Entry<Double, Double> prev = ranges.lowerEntry(range);
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55 double x0 = 0d;
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56 double x1 = 0d;
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57 double y0 = 0d;
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58 double y1 = 0d;
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59 if (prev == null && next != null) {
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60 x1 = next.getKey();
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61 y1 = next.getValue();
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62 }
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63 else if (prev != null && next == null) {
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64 return prev.getValue();
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65 }
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66 else {
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67 x0 = prev.getKey();
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68 x1 = next.getKey();
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69 y0 = prev.getValue();
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70 y1 = next.getValue();
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71 }
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72 return Linear.linear(range, x0, x1, y0, y1);
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73 }
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74
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75 public void addRiver(String river) {
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76 if (!this.rivers.containsKey(river)) {
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77 this.rivers.put(river, new TreeMap<Double, Double>());
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78 }
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79 }
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80
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81 public Set<String> getRivers() {
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82 return this.rivers.keySet();
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83 }
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84
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85 public void addRange(String river, double range, double radius) {
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86 if (this.rivers.containsKey(river)) {
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87 this.rivers.get(river).put(range, radius);
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88 }
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89 else {
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90 this.rivers.put(river, new TreeMap<Double, Double>());
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91 this.rivers.get(river).put(range, radius);
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92 }
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93 }
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94 }
http://dive4elements.wald.intevation.org