Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/ZoomScale.java @ 5462:f2371f3aaf03

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Show top level folder icons only if node has no factory If you have an empty folder the folder icon is still shown. This makes it possible to add functional "Top Level" entries in the Datacage
author Andre Heinecke <aheinecke@intevation.de>
date Tue, 26 Mar 2013 18:29:13 +0100
parents e8c6fbed889b
children
rev   line source
4618
e8c6fbed889b New class storing configuration about zoom dependent filter levels.
Raimund Renkert <rrenkert@intevation.de>
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1 package de.intevation.flys.artifacts.model;
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2
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3 import java.util.HashMap;
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4 import java.util.Map;
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5 import java.util.Set;
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6 import java.util.TreeMap;
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7
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8 import org.apache.log4j.Logger;
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9
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10 import de.intevation.flys.artifacts.math.Linear;
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11
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12
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13 public class ZoomScale
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14 {
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15 private static Logger logger = Logger.getLogger(ZoomScale.class);
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16
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17 private HashMap<String, TreeMap<Double, Double>> rivers;
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18
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19 public ZoomScale() {
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20 this.rivers = new HashMap<String, TreeMap<Double, Double>>();
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21 }
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22
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23 public ZoomScale(String river) {
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24 this();
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25 rivers.put(river, new TreeMap<Double, Double>());
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26 }
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27
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28 public double getRadius(String river, double lower, double upper) {
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29 double range = Math.abs(upper) - Math.abs(lower);
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30 TreeMap<Double, Double> ranges = rivers.get(river);
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31 if (ranges == null) {
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32 return 0.001;
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33 }
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34 Map.Entry<Double, Double> next = ranges.higherEntry(range);
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35 Map.Entry<Double, Double> prev = ranges.lowerEntry(range);
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36 double x0 = 0d;
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37 double x1 = 0d;
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38 double y0 = 0d;
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39 double y1 = 0d;
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40 if (prev == null && next != null) {
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41 x1 = next.getKey();
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42 y1 = next.getValue();
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43 }
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44 else if (prev != null && next == null) {
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45 return prev.getValue();
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46 }
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47 else {
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48 x0 = prev.getKey();
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49 x1 = next.getKey();
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50 y0 = prev.getValue();
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51 y1 = next.getValue();
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52 }
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53 return Linear.linear(range, x0, x1, y0, y1);
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54 }
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55
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56 public void addRiver(String river) {
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57 if (!this.rivers.containsKey(river)) {
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58 this.rivers.put(river, new TreeMap<Double, Double>());
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59 }
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60 }
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61
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62 public Set<String> getRivers() {
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63 return this.rivers.keySet();
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64 }
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65
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66 public void addRange(String river, double range, double radius) {
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67 if (this.rivers.containsKey(river)) {
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68 this.rivers.get(river).put(range, radius);
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69 }
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70 else {
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71 this.rivers.put(river, new TreeMap<Double, Double>());
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72 this.rivers.get(river).put(range, radius);
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73 }
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74 }
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75 }
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