Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/geom/Lines.java @ 4655:cd44d28d0fbc

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Move the access to artifact data to the Access object Use BedHeightAccess class to receive the data from the artifact. This abstracts the data access from the actual artifact.
author Björn Ricks <bjoern.ricks@intevation.de>
date Tue, 11 Dec 2012 09:44:04 +0100
parents ed07dd55f487
children
rev   line source
3227
ed07dd55f487 Fixed various bugs (package declarations, moved classes to correct places).
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2688
diff changeset
1 package de.intevation.flys.artifacts.geom;
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2
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 938
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3 import java.util.ArrayList;
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4 import java.util.List;
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parents: 938
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5 import java.util.Iterator;
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6
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7 import java.awt.geom.Point2D;
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8 import java.awt.geom.Line2D;
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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 import org.apache.log4j.Logger;
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13
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 938
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14 import gnu.trove.TDoubleArrayList;
a7def20539fb flys/issue317: Removed dependency from cross section demo app.
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parents: 938
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15
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Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2650
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16 /**
9d2a06c3a134 Added DataType for lines that also stores width, use it. Added HasLabel interface for some series.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2650
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17 * Utility to create lines (intersect water with cross-section etc).
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18 */
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19 public class Lines
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20 {
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21 private static Logger log = Logger.getLogger(Lines.class);
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22
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23 public static final double EPSILON = 1e-4;
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25 public static enum Mode { UNDEF, WET, DRY };
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26
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28 /** Never instantiate Lines, use static functions instead. */
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29 protected Lines() {
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30 }
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31
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32
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33 /**
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34 * Calculate area of polygon with four vertices.
0143b44631cc Beginnings of mittlere hoehe calculation.
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35 * @return area of polygon with four vertices.
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36 */
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37 public static double area(Point2D p1, Point2D p2, Point2D p3, Point2D p4) {
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38 double[] x = new double[] {p1.getX(), p2.getX(), p3.getX(), p4.getX(), p1.getX() };
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39 double[] y = new double[] {p1.getY(), p2.getY(), p3.getY(), p4.getY(), p1.getY() };
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40 double area = 0d;
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41 for (int i=0; i <4; i++) {
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42 area += (x[i] * y[i+1]) - (x[i+1] * y[i]);
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43 }
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44 return Math.abs(area * 0.5d);
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45 }
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47
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Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2650
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48 /**
9d2a06c3a134 Added DataType for lines that also stores width, use it. Added HasLabel interface for some series.
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parents: 2650
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49 * Calculate the 'length' of the given lines.
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50 * @param lines lines of which to calculate length.
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51 */
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52 public static double length(List<Line2D> lines) {
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53 double sum = 0d;
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54 for (Line2D line: lines) {
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55 double xDiff = line.getX1() - line.getX2();
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parents: 1651
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56 double yDiff = line.getY1() - line.getY2();
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parents: 1651
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57 sum += Math.sqrt(xDiff*xDiff + yDiff*yDiff);
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58 }
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59 return sum;
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60 }
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61
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62
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parents: 2673
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63 /** List of lines and a double-precision area. */
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parents: 2673
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64 private static class ListWithArea {
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parents: 2673
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65 public List<Line2D> lines;
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66 public double area;
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parents: 2673
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67 public ListWithArea(List<Line2D> lines, double area) {
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68 this.lines = lines;
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69 this.area = area;
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70 }
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71 }
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72
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73
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74 /**
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75 * For a cross section given as points and a waterlevel (in meters),
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parents: 2674
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76 * create a set of lines that represent the water surface, assuming it
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77 * is distributed horizontally equally.
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78 * @param points the points describing the river bed.
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79 * @param waterLevel the height of the horizontal water line.
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80 * @return A list of Lines representing the water surface and the
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81 * calculated area between water surface and river bed.
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82 */
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83 public static ListWithArea fillWater(List<Point2D> points, double waterLevel) {
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84
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85 boolean debug = log.isDebugEnabled();
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86
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87 if (debug) {
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88 log.debug("fillWater");
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89 log.debug("----------------------------");
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90 }
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91
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92 List<Line2D> result = new ArrayList();
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93
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94 int N = points.size();
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95
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96 if (N == 0) {
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97 return new ListWithArea(result, 0d);
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98 }
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99
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100 if (N == 1) {
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101 Point2D p = points.get(0);
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102 // Only generate point if over profile
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103 if (waterLevel > p.getY()) {
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104 result.add(new Line2D.Double(
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105 p.getX(), waterLevel,
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106 p.getX(), waterLevel));
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107 }
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108 // TODO continue calculating area.
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109 return new ListWithArea(result, 0d);
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110 }
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111
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112 double minX = Double.MAX_VALUE;
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113 double minY = Double.MAX_VALUE;
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114 double maxX = -Double.MAX_VALUE;
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115 double maxY = -Double.MAX_VALUE;
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116
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117 // To ensure for sequences of equals x's that
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118 // the original index order is preserved.
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119 for (Point2D p: points) {
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120 double x = p.getX(), y = p.getY();
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121 if (x < minX) minX = x;
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122 if (x > maxX) maxX = x;
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123 if (y < minY) minY = y;
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124 if (y > maxY) maxY = y;
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125 }
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126
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
127 if (minY > waterLevel) { // profile completely over water level
938
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
128 log.debug("complete over water");
2674
2be59d5b342c Added and respect theme prop whether or not to display (not yet calculated) middle height.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2673
diff changeset
129 return new ListWithArea(result, 0d);
933
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
130 }
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
131
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
132 if (waterLevel > maxY) { // water floods profile
938
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
133 log.debug("complete under water");
933
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
134 result.add(new Line2D.Double(minX, waterLevel, maxX, waterLevel));
2674
2be59d5b342c Added and respect theme prop whether or not to display (not yet calculated) middle height.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2673
diff changeset
135 return new ListWithArea(result, 0d);
933
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
136 }
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
137
2673
0143b44631cc Beginnings of mittlere hoehe calculation.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2652
diff changeset
138 // Water is sometimes above, sometimes under profile.
933
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
139 Mode mode = Mode.UNDEF;
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
140
938
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
141 double startX = minX;
933
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
142
2673
0143b44631cc Beginnings of mittlere hoehe calculation.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2652
diff changeset
143 double area = 0d;
0143b44631cc Beginnings of mittlere hoehe calculation.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2652
diff changeset
144 // Walking along the profile.
933
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
145 for (int i = 1; i < N; ++i) {
938
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
146 Point2D p1 = points.get(i-1);
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
147 Point2D p2 = points.get(i);
933
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
148
938
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
149 if (p1.getY() < waterLevel && p2.getY() < waterLevel) {
933
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
150 // completely under water
938
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
151 if (debug) {
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
152 log.debug("under water: " + p1 + " " + p2);
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
153 }
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
154 if (mode != Mode.WET) {
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
155 startX = p1.getX();
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
156 mode = Mode.WET;
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
157 }
2673
0143b44631cc Beginnings of mittlere hoehe calculation.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2652
diff changeset
158 area += area(p1, p2,
0143b44631cc Beginnings of mittlere hoehe calculation.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2652
diff changeset
159 new Point2D.Double(p2.getX(), waterLevel),
0143b44631cc Beginnings of mittlere hoehe calculation.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2652
diff changeset
160 new Point2D.Double(p1.getX(), waterLevel));
933
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
161 continue;
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
162 }
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
163
2673
0143b44631cc Beginnings of mittlere hoehe calculation.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2652
diff changeset
164 // TODO trigger area calculation
938
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
165 if (p1.getY() > waterLevel && p2.getY() > waterLevel) {
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
166 if (debug) {
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
167 log.debug("over water: " + p1 + " " + p2);
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
168 }
933
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
169 // completely over water
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
170 if (mode == Mode.WET) {
938
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
171 log.debug("over/wet");
933
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
172 result.add(new Line2D.Double(
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
173 startX, waterLevel,
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
174 p1.getX(), waterLevel));
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
175 }
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
176 mode = Mode.DRY;
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
177 continue;
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
178 }
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
179
2673
0143b44631cc Beginnings of mittlere hoehe calculation.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2652
diff changeset
180 // TODO trigger area calculation
933
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
181 if (Math.abs(p1.getX() - p2.getX()) < EPSILON) {
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
182 // vertical line
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
183 switch (mode) {
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
184 case WET:
938
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
185 log.debug("vertical/wet");
933
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
186 mode = Mode.DRY;
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
187 result.add(new Line2D.Double(
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
188 startX, waterLevel,
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
189 p1.getX(), waterLevel));
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
190 break;
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
191 case DRY:
938
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
192 log.debug("vertical/dry");
933
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
193 mode = Mode.WET;
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
194 startX = p2.getX();
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
195 break;
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
196 default: // UNDEF
938
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
197 log.debug("vertical/undef");
933
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
198 if (p2.getY() < waterLevel) {
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
199 mode = Mode.WET;
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
200 startX = p2.getX();
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
201 }
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
202 else {
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
203 mode = Mode.DRY;
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
204 }
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
205 }
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
206 continue;
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
207 }
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
208
938
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
209 // check if waterlevel directly hits the vertices;
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
210
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
211 boolean p1W = Math.abs(waterLevel - p1.getY()) < EPSILON;
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
212 boolean p2W = Math.abs(waterLevel - p2.getY()) < EPSILON;
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
213
2673
0143b44631cc Beginnings of mittlere hoehe calculation.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2652
diff changeset
214 // TODO trigger area calculation
938
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
215 if (p1W || p2W) {
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
216 if (debug) {
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
217 log.debug("water hits vertex: " + p1 + " " + p2 + " " + mode);
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
218 }
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
219 if (p1W && p2W) { // parallel to water -> dry
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
220 log.debug("water hits both vertices");
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
221 if (mode == Mode.WET) {
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
222 result.add(new Line2D.Double(
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
223 startX, waterLevel,
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
224 p1.getX(), waterLevel));
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
225 }
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
226 mode = Mode.DRY;
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
227 }
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
228 else if (p1W) { // p1 == waterlevel
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
229 log.debug("water hits first vertex");
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
230 if (p2.getY() > waterLevel) { // --> dry
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
231 if (mode == Mode.WET) {
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
232 result.add(new Line2D.Double(
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
233 startX, waterLevel,
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
234 p1.getX(), waterLevel));
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
235 }
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
236 mode = Mode.DRY;
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
237 }
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
238 else { // --> wet
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
239 if (mode != Mode.WET) {
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
240 startX = p1.getX();
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
241 mode = Mode.WET;
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
242 }
2687
dc67ddd4a34c Progressed area calculation while line computation a bit.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2681
diff changeset
243 area += area(p1, p2,
dc67ddd4a34c Progressed area calculation while line computation a bit.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2681
diff changeset
244 new Point2D.Double(p2.getX(), waterLevel),
dc67ddd4a34c Progressed area calculation while line computation a bit.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2681
diff changeset
245 new Point2D.Double(p2.getX(), waterLevel));
938
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
246 }
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
247 }
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
248 else { // p2 == waterlevel
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
249 log.debug("water hits second vertex");
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
250 if (p1.getY() > waterLevel) { // --> wet
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
251 if (mode != Mode.WET) {
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
252 startX = p2.getX();
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
253 mode = Mode.WET;
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
254 }
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
255 }
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
256 else { // --> dry
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
257 if (mode == Mode.WET) {
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
258 result.add(new Line2D.Double(
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
259 startX, waterLevel,
bd3683453928 Debugged the water fill algorithm.
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260 p2.getX(), waterLevel));
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261 }
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262 mode = Mode.DRY;
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263 area += area(p1, p2,
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264 new Point2D.Double(p1.getX(), waterLevel),
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265 new Point2D.Double(p1.getX(), waterLevel));
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266 }
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267 }
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268 if (debug) {
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269 log.debug("mode is now: " + mode);
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270 }
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271 continue;
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272 }
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273
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274 // TODO trigger area calculation
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275 // intersection case
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276 double x = Linear.linear(
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277 waterLevel,
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278 p1.getY(), p2.getY(),
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279 p1.getX(), p2.getX());
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280
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281 if (debug) {
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282 log.debug("intersection p1:" + p1);
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283 log.debug("intersection p2:" + p2);
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284 log.debug("intersection at x: " + x);
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285 }
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286
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287 // Add area of that part of intersection that is 'wet'.
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288 if (p1.getY() > waterLevel) {
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diff changeset
289 area += area(new Point2D.Double(x, waterLevel),
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290 p2,
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291 new Point2D.Double(p2.getX(), waterLevel),
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292 new Point2D.Double(x, waterLevel));
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293 }
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294 else {
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diff changeset
295 area += area(new Point2D.Double(x, waterLevel),
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diff changeset
296 p1,
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297 new Point2D.Double(p1.getX(), waterLevel),
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298 new Point2D.Double(x, waterLevel));
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299 }
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300
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301 switch (mode) {
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302 case WET:
938
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303 log.debug("intersect/wet");
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304 mode = Mode.DRY;
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diff changeset
305 result.add(new Line2D.Double(
34136924661b Generate water level lines for given cross section.
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diff changeset
306 startX, waterLevel,
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diff changeset
307 x, waterLevel));
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
308 break;
34136924661b Generate water level lines for given cross section.
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diff changeset
309
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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diff changeset
310 case DRY:
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311 log.debug("intersect/dry");
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312 mode = Mode.WET;
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diff changeset
313 startX = x;
34136924661b Generate water level lines for given cross section.
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diff changeset
314 break;
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315
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diff changeset
316 default: // UNDEF
938
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317 log.debug("intersect/undef");
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318 if (p2.getY() > waterLevel) {
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319 log.debug("intersect/undef/over");
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320 mode = Mode.DRY;
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
321 result.add(new Line2D.Double(
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
322 p1.getX(), waterLevel,
34136924661b Generate water level lines for given cross section.
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diff changeset
323 x, waterLevel));
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
324 }
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
325 else {
34136924661b Generate water level lines for given cross section.
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parents:
diff changeset
326 mode = Mode.WET;
34136924661b Generate water level lines for given cross section.
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parents:
diff changeset
327 startX = x;
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
328 }
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
329 } // switch mode
934
d0f3fea20f01 Fixed corner case.
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diff changeset
330 } // for all points p[i] and p[i-1]
933
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parents:
diff changeset
331
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
332 if (mode == Mode.WET) {
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
333 result.add(new Line2D.Double(
34136924661b Generate water level lines for given cross section.
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parents:
diff changeset
334 startX, waterLevel,
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
335 maxX, waterLevel));
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
336 }
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
337
2674
2be59d5b342c Added and respect theme prop whether or not to display (not yet calculated) middle height.
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diff changeset
338 return new ListWithArea(result, area);
933
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parents:
diff changeset
339 }
1651
a7def20539fb flys/issue317: Removed dependency from cross section demo app.
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diff changeset
340
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Felix Wolfsteller <felix.wolfsteller@intevation.de>
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diff changeset
341
9d2a06c3a134 Added DataType for lines that also stores width, use it. Added HasLabel interface for some series.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2650
diff changeset
342 /**
9d2a06c3a134 Added DataType for lines that also stores width, use it. Added HasLabel interface for some series.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2650
diff changeset
343 * Class holding points that form lines and the calculated length.
9d2a06c3a134 Added DataType for lines that also stores width, use it. Added HasLabel interface for some series.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
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diff changeset
344 */
9d2a06c3a134 Added DataType for lines that also stores width, use it. Added HasLabel interface for some series.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2650
diff changeset
345 public static class LineData {
9d2a06c3a134 Added DataType for lines that also stores width, use it. Added HasLabel interface for some series.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2650
diff changeset
346 public double [][] points;
9d2a06c3a134 Added DataType for lines that also stores width, use it. Added HasLabel interface for some series.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2650
diff changeset
347 public double width;
2673
0143b44631cc Beginnings of mittlere hoehe calculation.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2652
diff changeset
348 public double area;
0143b44631cc Beginnings of mittlere hoehe calculation.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2652
diff changeset
349 public LineData(double[][] points, double width, double area) {
2652
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Felix Wolfsteller <felix.wolfsteller@intevation.de>
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diff changeset
350 this.points = points;
9d2a06c3a134 Added DataType for lines that also stores width, use it. Added HasLabel interface for some series.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2650
diff changeset
351 this.width = width;
2673
0143b44631cc Beginnings of mittlere hoehe calculation.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2652
diff changeset
352 this.area = area;
2652
9d2a06c3a134 Added DataType for lines that also stores width, use it. Added HasLabel interface for some series.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
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diff changeset
353 }
9d2a06c3a134 Added DataType for lines that also stores width, use it. Added HasLabel interface for some series.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2650
diff changeset
354 }
9d2a06c3a134 Added DataType for lines that also stores width, use it. Added HasLabel interface for some series.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2650
diff changeset
355
9d2a06c3a134 Added DataType for lines that also stores width, use it. Added HasLabel interface for some series.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2650
diff changeset
356
2681
b94b367d8b4d Minor refactoring, docs.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2679
diff changeset
357 /** Return length of a single line. */
b94b367d8b4d Minor refactoring, docs.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2679
diff changeset
358 public static double lineLength(Line2D line) {
b94b367d8b4d Minor refactoring, docs.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2679
diff changeset
359 double xDiff = line.getX1() - line.getX2();
b94b367d8b4d Minor refactoring, docs.
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parents: 2679
diff changeset
360 double yDiff = line.getY1() - line.getY2();
b94b367d8b4d Minor refactoring, docs.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2679
diff changeset
361 return Math.sqrt(xDiff*xDiff + yDiff*yDiff);
b94b367d8b4d Minor refactoring, docs.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2679
diff changeset
362 }
b94b367d8b4d Minor refactoring, docs.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2679
diff changeset
363
b94b367d8b4d Minor refactoring, docs.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2679
diff changeset
364
b94b367d8b4d Minor refactoring, docs.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2679
diff changeset
365 /**
b94b367d8b4d Minor refactoring, docs.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2679
diff changeset
366 * @param points the riverbed.
b94b367d8b4d Minor refactoring, docs.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2679
diff changeset
367 */
2652
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Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2650
diff changeset
368 public static LineData createWaterLines(
1651
a7def20539fb flys/issue317: Removed dependency from cross section demo app.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 938
diff changeset
369 List<Point2D> points,
a7def20539fb flys/issue317: Removed dependency from cross section demo app.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 938
diff changeset
370 double waterlevel
a7def20539fb flys/issue317: Removed dependency from cross section demo app.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 938
diff changeset
371 ) {
2674
2be59d5b342c Added and respect theme prop whether or not to display (not yet calculated) middle height.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2673
diff changeset
372 ListWithArea listAndArea = fillWater(points, waterlevel);
2be59d5b342c Added and respect theme prop whether or not to display (not yet calculated) middle height.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2673
diff changeset
373 List<Line2D> lines = listAndArea.lines;
1651
a7def20539fb flys/issue317: Removed dependency from cross section demo app.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 938
diff changeset
374
a7def20539fb flys/issue317: Removed dependency from cross section demo app.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 938
diff changeset
375 TDoubleArrayList lxs = new TDoubleArrayList();
a7def20539fb flys/issue317: Removed dependency from cross section demo app.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 938
diff changeset
376 TDoubleArrayList lys = new TDoubleArrayList();
2652
9d2a06c3a134 Added DataType for lines that also stores width, use it. Added HasLabel interface for some series.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2650
diff changeset
377 double linesLength = 0.0f;
1651
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 938
diff changeset
378
a7def20539fb flys/issue317: Removed dependency from cross section demo app.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 938
diff changeset
379 for (Iterator<Line2D> iter = lines.iterator(); iter.hasNext();) {
2652
9d2a06c3a134 Added DataType for lines that also stores width, use it. Added HasLabel interface for some series.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2650
diff changeset
380 Line2D line = iter.next();
9d2a06c3a134 Added DataType for lines that also stores width, use it. Added HasLabel interface for some series.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2650
diff changeset
381 Point2D p1 = line.getP1();
9d2a06c3a134 Added DataType for lines that also stores width, use it. Added HasLabel interface for some series.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2650
diff changeset
382 Point2D p2 = line.getP2();
1651
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 938
diff changeset
383 lxs.add(p1.getX());
a7def20539fb flys/issue317: Removed dependency from cross section demo app.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 938
diff changeset
384 lys.add(p1.getY());
a7def20539fb flys/issue317: Removed dependency from cross section demo app.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 938
diff changeset
385 lxs.add(p2.getX());
a7def20539fb flys/issue317: Removed dependency from cross section demo app.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 938
diff changeset
386 lys.add(p2.getY());
2652
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Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2650
diff changeset
387
9d2a06c3a134 Added DataType for lines that also stores width, use it. Added HasLabel interface for some series.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2650
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388 // Length calculation.
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b94b367d8b4d Minor refactoring, docs.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2679
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389 linesLength += lineLength(line);
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Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2650
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390
1651
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 938
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391 if (iter.hasNext()) {
a7def20539fb flys/issue317: Removed dependency from cross section demo app.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 938
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392 lxs.add(Double.NaN);
a7def20539fb flys/issue317: Removed dependency from cross section demo app.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 938
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393 lys.add(Double.NaN);
a7def20539fb flys/issue317: Removed dependency from cross section demo app.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 938
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394 }
a7def20539fb flys/issue317: Removed dependency from cross section demo app.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 938
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395 }
a7def20539fb flys/issue317: Removed dependency from cross section demo app.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 938
diff changeset
396
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Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2650
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397 return new LineData(
9d2a06c3a134 Added DataType for lines that also stores width, use it. Added HasLabel interface for some series.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2650
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398 new double [][] { lxs.toNativeArray(), lys.toNativeArray() },
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2be59d5b342c Added and respect theme prop whether or not to display (not yet calculated) middle height.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2673
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399 linesLength, listAndArea.area
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Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2650
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400 );
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 938
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401 }
933
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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402 }
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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403 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org