Mercurial > dive4elements > gnv-client
annotate gnv-artifacts/src/main/java/de/intevation/gnv/math/Point2d.java @ 434:0eed5749fd63
Implemented the raster interpolation for the 'Profilschnitt'.
gnv-artifacts/trunk@482 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
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date | Wed, 23 Dec 2009 15:28:40 +0000 |
parents | 422275fc9927 |
children | b248531fa20b |
rev | line source |
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361
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Added code to do 2D interpolations along a digitied track on the map.
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1 package de.intevation.gnv.math; |
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2 |
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3 import java.util.Comparator; |
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4 |
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5 import com.vividsolutions.jts.geom.Envelope; |
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6 import com.vividsolutions.jts.geom.Coordinate; |
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7 |
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8 /** |
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9 * @author Sascha L. Teichmann |
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10 */ |
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11 public class Point2d |
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12 extends Coordinate |
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13 { |
365
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Added horizontal crossprofile charts to chart pallet. Fixed some bugs before interpolation.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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361
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14 public static final double EPSILON = 1e-3d; |
361
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15 |
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16 public static final Comparator X_COMPARATOR = new Comparator() { |
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17 public int compare(Object a, Object b) { |
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18 double xa = ((Coordinate)a).x; |
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19 double xb = ((Coordinate)b).x; |
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20 if (xa < xb) return -1; |
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21 if (xa > xb) return +1; |
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22 return 0; |
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23 } |
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24 }; |
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25 |
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26 public static final Comparator Y_COMPARATOR = new Comparator() { |
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27 public int compare(Object a, Object b) { |
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28 double ya = ((Coordinate)a).y; |
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29 double yb = ((Coordinate)b).y; |
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30 if (ya < yb) return -1; |
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31 if (ya > yb) return +1; |
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32 return 0; |
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33 } |
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34 }; |
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35 |
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36 public static class InverseL1Comparator |
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37 implements Comparator |
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38 { |
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39 private Point2d ref; |
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40 |
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41 public InverseL1Comparator(Point2d ref) { |
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42 this.ref = ref; |
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43 } |
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44 |
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45 public int compare(Object a, Object b) { |
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46 Point2d pa = (Point2d)a; |
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47 Point2d pb = (Point2d)b; |
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48 double da = ref.L1(pa); |
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49 double db = ref.L1(pb); |
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50 if (da < db) return -1; |
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51 if (da > db) return +1; |
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52 return 0; |
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53 } |
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54 } // class InverseL1Comparator |
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55 |
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56 public int i; |
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57 public int j; |
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58 |
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59 public Point2d() { |
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60 } |
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61 |
431
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Refactored the XYColumn and Point2d code a bit to be more reusable in 3D.
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62 public Point2d(double x, double y, int i, int j) { |
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63 super(x, y); |
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64 this.i = i; |
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65 this.j = j; |
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66 } |
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67 |
361
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68 public Point2d(double x, double y, double z, int i, int j) { |
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69 super(x, y, z); |
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70 this.i = i; |
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71 this.j = j; |
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72 } |
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73 |
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74 |
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75 public double L1(Point2d other) { |
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76 return L1(this, other); |
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77 } |
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78 |
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79 public static double L1(Coordinate a, Coordinate b) { |
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80 return Math.abs(a.x - b.x) + Math.abs(a.y - b.y); |
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81 } |
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82 |
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83 public Envelope envelope() { |
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84 return envelope(EPSILON); |
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85 } |
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86 |
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87 public Envelope envelope(double epsilon) { |
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88 return new Envelope( |
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89 x-epsilon, x+epsilon, |
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90 y-epsilon, y+epsilon); |
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91 } |
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92 |
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93 public boolean hasIGap(Point2d other) { |
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94 return Math.abs(i - other.i) > 1; |
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95 } |
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96 |
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97 public boolean hasJGap(Point2d other) { |
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98 return Math.abs(j - other.j) > 1; |
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99 } |
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100 } |
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101 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8: |