Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/Range.java @ 4896:27d58b7b5edd

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author Felix Wolfsteller <felix.wolfsteller@intevation.de>
date Tue, 29 Jan 2013 10:52:57 +0100
parents 048b3c3acd01
children f7208c190e4a
rev   line source
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1 package de.intevation.flys.artifacts.model;
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2
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3 import java.io.Serializable;
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4
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5 /** A range from ... to .*/
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6 public class Range implements Serializable {
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7
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8 public static final double EPSILON = 1e-5;
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9
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10 protected double start;
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11 protected double end;
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12
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13 public Range() {
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14 }
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15
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16 public Range(Range other) {
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17 start = other.start;
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18 end = other.end;
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19 }
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20
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21 public Range(double start, double end) {
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22 this.start = start;
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23 this.end = end;
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24 }
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25
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26 public double getStart() {
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27 return start;
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28 }
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29
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30 public double getEnd() {
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31 return end;
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32 }
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33
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34 public boolean disjoint(double ostart, double oend) {
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35 return start > oend || ostart > end;
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36 }
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37
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38 public boolean disjoint(Range other) {
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39 return start > other.end || other.start > end;
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40 }
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41
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42 public boolean intersects(Range other) {
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43 return !disjoint(other);
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44 }
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45
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46 public void extend(Range other) {
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47 if (other.start < start) start = other.start;
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48 if (other.end > end ) end = other.end;
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49 }
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50
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51 public boolean clip(Range other) {
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52 if (disjoint(other)) return false;
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53
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54 if (other.start > start) start = other.start;
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55 if (other.end < end ) end = other.end;
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56
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57 return true;
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58 }
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59
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60 /** True if start>x<end (+ some epsilon) . */
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61 public boolean inside(double x) {
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62 return x > start-EPSILON && x < end+EPSILON;
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63 }
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64 }
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65 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org