Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/artifacts/model/Range.java @ 6494:1e97d2e95410

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Amtl. Linien: Fixed problem that only a random official line is detect.
author Sascha L. Teichmann <teichmann@intevation.de>
date Fri, 28 Jun 2013 12:52:51 +0200
parents dc23ffb9d82c
children 9744ce3c3853
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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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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bd047b71ab37 Repaired internal references
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9 package org.dive4elements.river.artifacts.model;
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10
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11 import java.io.Serializable;
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12
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13 /** A range from ... to .*/
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14 public class Range implements Serializable {
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15
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16 public static final double EPSILON = 1e-5;
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17
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18 protected double start;
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19 protected double end;
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20
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21 public Range() {
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22 }
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23
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24 public Range(Range other) {
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25 start = other.start;
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26 end = other.end;
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27 }
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28
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29 public Range(double start, double end) {
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30 this.start = start;
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31 this.end = end;
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32 }
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33
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34 public void setStart(double start) {
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35 this.start = start;
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36 }
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37
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38 public double getStart() {
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39 return start;
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40 }
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41
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42
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43 public void setEnd(double end) {
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44 this.end = end;
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45 }
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46
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47 public double getEnd() {
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48 return end;
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49 }
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50
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51 public boolean disjoint(double ostart, double oend) {
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52 return start > oend || ostart > end;
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53 }
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54
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55 public boolean disjoint(Range other) {
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56 return start > other.end || other.start > end;
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57 }
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58
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59 public boolean intersects(Range other) {
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60 return !disjoint(other);
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61 }
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62
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63 public void extend(Range other) {
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64 if (other.start < start) start = other.start;
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65 if (other.end > end ) end = other.end;
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66 }
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67
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68 public boolean clip(Range other) {
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69 if (disjoint(other)) return false;
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70
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71 if (other.start > start) start = other.start;
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72 if (other.end < end ) end = other.end;
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73
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74 return true;
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75 }
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76
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77 /** True if start>x<end (+ some epsilon) . */
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78 public boolean inside(double x) {
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79 return x > start-EPSILON && x < end+EPSILON;
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80 }
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81
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82 public boolean contains(double x) {
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83 return inside(x);
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84 }
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85
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86
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87 /** Hash Code. */
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88 @Override
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89 public int hashCode() {
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90 return new Double(this.start).hashCode() ^
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91 new Double(this.end).hashCode();
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92 }
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93
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94
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95 /**
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96 * Compares start and end values with some epsilon.
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97 */
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98 @Override
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99 public boolean equals(Object otherRange) {
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100 if (otherRange instanceof Range) {
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101 Range oRange = (Range) otherRange;
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102 return
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103 Math.abs(oRange.start - this.start) <= EPSILON
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104 && Math.abs(oRange.end - this.end) <= EPSILON;
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105 }
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106 return false;
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107 }
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108
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109 /** Returns clone with same start and end values. */
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110 @Override
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111 public Object clone() {
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112 return new Range(this.start, this.end);
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113 }
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114
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115 public String toString() {
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116 return "[Range: start=" + start + " end=" + end + "]";
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117 }
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118 }
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119 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org