Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/jfree/DoubleBounds.java @ 5788:b5d20b3dab4e

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author Felix Wolfsteller <felix.wolfsteller@intevation.de>
date Tue, 23 Apr 2013 10:47:29 +0200
parents e1ba8273df07
children
rev   line source
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1 package de.intevation.flys.jfree;
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2
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3
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4 import org.jfree.chart.axis.ValueAxis;
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5 import org.jfree.chart.axis.LogarithmicAxis;
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6 import org.jfree.data.Range;
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7
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8
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9 /**
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10 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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11 */
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12 public class DoubleBounds implements Bounds {
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13
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14 protected double lower;
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15 protected double upper;
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16
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17
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18 /**
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19 * Default constructor. <b>A DoubleBounds has always set lower &lt;
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20 * upper!</b>
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21 */
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22 public DoubleBounds(double lower, double upper) {
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23 this.lower = Math.min(lower, upper);
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24 this.upper = Math.max(lower, upper);
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25 }
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26
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27
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28 @Override
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29 public Number getLower() {
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30 return Double.valueOf(lower);
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31 }
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32
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33
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34 @Override
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35 public Number getUpper() {
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36 return Double.valueOf(upper);
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37 }
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38
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39
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40 @Override
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41 public void applyBounds(ValueAxis axis) {
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42 axis.setRange(new Range(lower, upper));
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43 }
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44
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45
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46 /**
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47 * Set extended range to ValueAxis.
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48 * @param percent how many percent to extend (in each direction,
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49 * thus 10 percent on [0,100] -> [-10,110].
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50 */
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51 @Override
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52 public void applyBounds(ValueAxis axis, int percent) {
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53 double space = (upper - lower) / 100 * percent;
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54 if (axis instanceof LogarithmicAxis) {
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55 axis.setRange(new Range(Math.max(lower-space, 0.0001),
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56 Math.max(upper+space, 0.0002)));
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57 } else {
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58 axis.setRange(new Range(lower-space, upper+space));
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59 }
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60 }
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61
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62
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63 @Override
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64 public Bounds combine(Bounds bounds) {
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65 if (bounds == null) {
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66 return this;
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67 }
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68
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69 DoubleBounds other = (DoubleBounds) bounds;
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70
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71 double otherLower = other.getLower().doubleValue();
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72 double otherUpper = other.getUpper().doubleValue();
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73
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74 return new DoubleBounds(
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75 otherLower < lower ? otherLower : lower,
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76 otherUpper > upper ? otherUpper : upper);
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77 }
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78
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79
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80 @Override
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81 public String toString() {
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82 return "DoubleBounds=[" + lower + " ; " + upper + "]";
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83 }
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84 }
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85 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org