Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/artifacts/geom/Lines.java @ 8856:5e38e2924c07 3.2.x

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Fix code style.
author Tom Gottfried <tom@intevation.de>
date Thu, 18 Jan 2018 20:12:01 +0100
parents af13ceeba52a
children 0a5239a1e46e
rev   line source
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Sascha L. Teichmann <teichmann@intevation.de>
parents: 5838
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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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9 package org.dive4elements.river.artifacts.geom;
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10
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11 import java.util.ArrayList;
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12 import java.util.List;
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13 import java.util.Iterator;
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14
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15 import java.awt.geom.Point2D;
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16 import java.awt.geom.Line2D;
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17
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18 import org.dive4elements.river.artifacts.math.Linear;
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19
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20 import org.apache.log4j.Logger;
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21
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22 import gnu.trove.TDoubleArrayList;
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23
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24 /**
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25 * Utility to create lines (intersect water with cross-section etc).
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26 */
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27 public class Lines
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28 {
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29 private static Logger log = Logger.getLogger(Lines.class);
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30
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31 public static final double EPSILON = 1e-4;
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32
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33 public static enum Mode { UNDEF, WET, DRY };
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34
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35
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36 /** Never instantiate Lines, use static functions instead. */
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37 protected Lines() {
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38 }
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39
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40
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41 /**
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42 * Calculate area of polygon with four vertices.
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43 * @return area of polygon with four vertices.
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44 */
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45 public static double area(Point2D p1, Point2D p2, Point2D p3, Point2D p4) {
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46 double[] x = new double[] {
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47 p1.getX(), p2.getX(), p3.getX(), p4.getX(), p1.getX() };
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48 double[] y = new double[] {
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49 p1.getY(), p2.getY(), p3.getY(), p4.getY(), p1.getY() };
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50 double area = 0d;
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51 for (int i=0; i <4; i++) {
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52 area += (x[i] * y[i+1]) - (x[i+1] * y[i]);
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53 }
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54 return Math.abs(area * 0.5d);
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55 }
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56
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57
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58 /**
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59 * Calculate the 'length' of the given lines.
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60 * @param lines lines of which to calculate length.
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61 */
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62 public static double length(List<Line2D> lines) {
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63 double sum = 0d;
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64 for (Line2D line: lines) {
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65 double xDiff = line.getX1() - line.getX2();
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66 double yDiff = line.getY1() - line.getY2();
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67 sum += Math.sqrt(xDiff*xDiff + yDiff*yDiff);
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68 }
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69 return sum;
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70 }
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71
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72
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73 /** List of lines and a double-precision area. */
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74 private static class ListWithArea {
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75 public List<Line2D> lines;
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76 public double area;
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77 public ListWithArea(List<Line2D> lines, double area) {
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78 this.lines = lines;
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79 this.area = area;
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80 }
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81 }
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82
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83
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84 /**
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85 * For a cross section given as points and a waterlevel (in meters),
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86 * create a set of lines that represent the water surface, assuming it
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87 * is distributed horizontally equally.
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88 * @param points the points describing the river bed.
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89 * @param waterLevel the height of the horizontal water line.
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90 * @return A list of Lines representing the water surface and the
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91 * calculated area between water surface and river bed.
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92 */
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93 public static ListWithArea fillWater(
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94 List<Point2D> points,
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95 double waterLevel
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96 ) {
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97 boolean debug = log.isDebugEnabled();
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98
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99 if (debug) {
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100 log.debug("fillWater");
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101 log.debug("----------------------------");
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102 }
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103
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104 List<Line2D> result = new ArrayList();
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105
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106 int N = points.size();
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107
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108 if (N == 0) {
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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 if (N == 1) {
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113 Point2D p = points.get(0);
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114 // Only generate point if over profile
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115 if (waterLevel > p.getY()) {
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116 result.add(new Line2D.Double(
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117 p.getX(), waterLevel,
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118 p.getX(), waterLevel));
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119 }
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120 // TODO continue calculating area.
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121 return new ListWithArea(result, 0d);
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122 }
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123
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124 double minX = Double.MAX_VALUE;
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125 double minY = Double.MAX_VALUE;
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126 double maxX = -Double.MAX_VALUE;
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127 double maxY = -Double.MAX_VALUE;
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128
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129 // To ensure for sequences of equals x's that
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
130 // the original index order is preserved.
938
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
131 for (Point2D p: points) {
933
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
132 double x = p.getX(), y = p.getY();
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
133 if (x < minX) minX = x;
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
134 if (x > maxX) maxX = x;
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
135 if (y < minY) minY = y;
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
136 if (y > maxY) maxY = y;
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
137 }
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
138
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
139 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
140 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
141 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
142 }
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
143
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
144 if (waterLevel > maxY) { // water floods profile
938
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
145 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
146 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
147 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
148 }
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
149
2673
0143b44631cc Beginnings of mittlere hoehe calculation.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2652
diff changeset
150 // 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
151 Mode mode = Mode.UNDEF;
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
152
938
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
153 double startX = minX;
933
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
154
2673
0143b44631cc Beginnings of mittlere hoehe calculation.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2652
diff changeset
155 double area = 0d;
0143b44631cc Beginnings of mittlere hoehe calculation.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2652
diff changeset
156 // Walking along the profile.
933
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
157 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
158 Point2D p1 = points.get(i-1);
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
159 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
160
938
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
161 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
162 // completely under water
938
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
163 if (debug) {
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
164 log.debug("under water: " + p1 + " " + p2);
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
165 }
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
166 if (mode != Mode.WET) {
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
167 startX = p1.getX();
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
168 mode = Mode.WET;
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
169 }
2673
0143b44631cc Beginnings of mittlere hoehe calculation.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2652
diff changeset
170 area += area(p1, p2,
0143b44631cc Beginnings of mittlere hoehe calculation.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2652
diff changeset
171 new Point2D.Double(p2.getX(), waterLevel),
0143b44631cc Beginnings of mittlere hoehe calculation.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2652
diff changeset
172 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
173 continue;
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
174 }
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
175
2673
0143b44631cc Beginnings of mittlere hoehe calculation.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2652
diff changeset
176 // TODO trigger area calculation
938
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
177 if (p1.getY() > waterLevel && p2.getY() > waterLevel) {
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
178 if (debug) {
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
179 log.debug("over water: " + p1 + " " + p2);
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
180 }
933
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
181 // completely over water
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
182 if (mode == Mode.WET) {
938
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
183 log.debug("over/wet");
933
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
184 result.add(new Line2D.Double(
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
185 startX, waterLevel,
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
186 p1.getX(), waterLevel));
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
187 }
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
188 mode = Mode.DRY;
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
189 continue;
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
190 }
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
191
2673
0143b44631cc Beginnings of mittlere hoehe calculation.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2652
diff changeset
192 // TODO trigger area calculation
933
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
193 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
194 // vertical line
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
195 switch (mode) {
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
196 case WET:
938
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
197 log.debug("vertical/wet");
933
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
198 mode = Mode.DRY;
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
199 result.add(new Line2D.Double(
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
200 startX, waterLevel,
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
201 p1.getX(), waterLevel));
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
202 break;
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
203 case DRY:
938
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
204 log.debug("vertical/dry");
933
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
205 mode = Mode.WET;
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
206 startX = p2.getX();
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
207 break;
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
208 default: // UNDEF
938
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
209 log.debug("vertical/undef");
933
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
210 if (p2.getY() < waterLevel) {
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
211 mode = Mode.WET;
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
212 startX = p2.getX();
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
213 }
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
214 else {
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
215 mode = Mode.DRY;
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
216 }
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
217 }
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
218 continue;
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
219 }
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
220
938
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
221 // check if waterlevel directly hits the vertices;
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
222
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
223 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
224 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
225
2673
0143b44631cc Beginnings of mittlere hoehe calculation.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2652
diff changeset
226 // TODO trigger area calculation
938
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
227 if (p1W || p2W) {
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
228 if (debug) {
8856
5e38e2924c07 Fix code style.
Tom Gottfried <tom@intevation.de>
parents: 5994
diff changeset
229 log.debug("water hits vertex: "
5e38e2924c07 Fix code style.
Tom Gottfried <tom@intevation.de>
parents: 5994
diff changeset
230 + p1 + " " + p2 + " " + mode);
938
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
231 }
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
232 if (p1W && p2W) { // parallel to water -> dry
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
233 log.debug("water hits both vertices");
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
234 if (mode == Mode.WET) {
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
235 result.add(new Line2D.Double(
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
236 startX, waterLevel,
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
237 p1.getX(), waterLevel));
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
238 }
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
239 mode = Mode.DRY;
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
240 }
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
241 else if (p1W) { // p1 == waterlevel
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
242 log.debug("water hits first vertex");
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
243 if (p2.getY() > waterLevel) { // --> dry
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
244 if (mode == Mode.WET) {
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
245 result.add(new Line2D.Double(
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
246 startX, waterLevel,
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
247 p1.getX(), waterLevel));
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
248 }
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
249 mode = Mode.DRY;
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
250 }
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
251 else { // --> wet
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
252 if (mode != Mode.WET) {
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
253 startX = p1.getX();
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
254 mode = Mode.WET;
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
255 }
2687
dc67ddd4a34c Progressed area calculation while line computation a bit.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2681
diff changeset
256 area += area(p1, p2,
dc67ddd4a34c Progressed area calculation while line computation a bit.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2681
diff changeset
257 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
258 new Point2D.Double(p2.getX(), waterLevel));
938
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
259 }
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
260 }
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
261 else { // p2 == waterlevel
bd3683453928 Debugged the water fill algorithm.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 934
diff changeset
262 log.debug("water hits second vertex");
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diff changeset
263 if (p1.getY() > waterLevel) { // --> wet
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diff changeset
264 if (mode != Mode.WET) {
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diff changeset
265 startX = p2.getX();
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266 mode = Mode.WET;
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267 }
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268 }
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diff changeset
269 else { // --> dry
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diff changeset
270 if (mode == Mode.WET) {
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diff changeset
271 result.add(new Line2D.Double(
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diff changeset
272 startX, waterLevel,
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273 p2.getX(), waterLevel));
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diff changeset
274 }
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275 mode = Mode.DRY;
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diff changeset
276 area += area(p1, p2,
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277 new Point2D.Double(p1.getX(), waterLevel),
dc67ddd4a34c Progressed area calculation while line computation a bit.
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278 new Point2D.Double(p1.getX(), waterLevel));
938
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279 }
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280 }
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281 if (debug) {
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282 log.debug("mode is now: " + mode);
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283 }
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284 continue;
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285 }
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286
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287 // TODO trigger area calculation
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288 // intersection case
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289 double x = Linear.linear(
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290 waterLevel,
938
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291 p1.getY(), p2.getY(),
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292 p1.getX(), p2.getX());
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293
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294 if (debug) {
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295 log.debug("intersection p1:" + p1);
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296 log.debug("intersection p2:" + p2);
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297 log.debug("intersection at x: " + x);
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298 }
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299
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diff changeset
300 // Add area of that part of intersection that is 'wet'.
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diff changeset
301 if (p1.getY() > waterLevel) {
dc67ddd4a34c Progressed area calculation while line computation a bit.
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diff changeset
302 area += area(new Point2D.Double(x, waterLevel),
dc67ddd4a34c Progressed area calculation while line computation a bit.
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diff changeset
303 p2,
dc67ddd4a34c Progressed area calculation while line computation a bit.
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diff changeset
304 new Point2D.Double(p2.getX(), waterLevel),
dc67ddd4a34c Progressed area calculation while line computation a bit.
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parents: 2681
diff changeset
305 new Point2D.Double(x, waterLevel));
dc67ddd4a34c Progressed area calculation while line computation a bit.
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parents: 2681
diff changeset
306 }
dc67ddd4a34c Progressed area calculation while line computation a bit.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
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diff changeset
307 else {
dc67ddd4a34c Progressed area calculation while line computation a bit.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2681
diff changeset
308 area += area(new Point2D.Double(x, waterLevel),
dc67ddd4a34c Progressed area calculation while line computation a bit.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2681
diff changeset
309 p1,
dc67ddd4a34c Progressed area calculation while line computation a bit.
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parents: 2681
diff changeset
310 new Point2D.Double(p1.getX(), waterLevel),
dc67ddd4a34c Progressed area calculation while line computation a bit.
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diff changeset
311 new Point2D.Double(x, waterLevel));
dc67ddd4a34c Progressed area calculation while line computation a bit.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2681
diff changeset
312 }
dc67ddd4a34c Progressed area calculation while line computation a bit.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
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diff changeset
313
933
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parents:
diff changeset
314 switch (mode) {
34136924661b Generate water level lines for given cross section.
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parents:
diff changeset
315 case WET:
938
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diff changeset
316 log.debug("intersect/wet");
933
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diff changeset
317 mode = Mode.DRY;
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
318 result.add(new Line2D.Double(
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
319 startX, waterLevel,
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
320 x, waterLevel));
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
321 break;
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
322
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
323 case DRY:
938
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diff changeset
324 log.debug("intersect/dry");
933
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diff changeset
325 mode = Mode.WET;
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
326 startX = x;
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
327 break;
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 default: // UNDEF
938
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diff changeset
330 log.debug("intersect/undef");
933
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parents:
diff changeset
331 if (p2.getY() > waterLevel) {
938
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diff changeset
332 log.debug("intersect/undef/over");
933
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parents:
diff changeset
333 mode = Mode.DRY;
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
334 result.add(new Line2D.Double(
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
335 p1.getX(), waterLevel,
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
336 x, waterLevel));
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
337 }
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
338 else {
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
339 mode = Mode.WET;
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
340 startX = x;
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
341 }
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
342 } // switch mode
934
d0f3fea20f01 Fixed corner case.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 933
diff changeset
343 } // for all points p[i] and p[i-1]
933
34136924661b Generate water level lines for given cross section.
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parents:
diff changeset
344
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
345 if (mode == Mode.WET) {
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
346 result.add(new Line2D.Double(
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
347 startX, waterLevel,
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
348 maxX, waterLevel));
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
349 }
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
350
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
351 return new ListWithArea(result, area);
933
34136924661b Generate water level lines for given cross section.
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parents:
diff changeset
352 }
1651
a7def20539fb flys/issue317: Removed dependency from cross section demo app.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 938
diff changeset
353
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
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 * 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>
parents: 2650
diff changeset
357 */
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
358 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
359 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
360 public double width;
2673
0143b44631cc Beginnings of mittlere hoehe calculation.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2652
diff changeset
361 public double area;
0143b44631cc Beginnings of mittlere hoehe calculation.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2652
diff changeset
362 public LineData(double[][] points, double width, double 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>
parents: 2650
diff changeset
363 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
364 this.width = width;
2673
0143b44631cc Beginnings of mittlere hoehe calculation.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2652
diff changeset
365 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>
parents: 2650
diff changeset
366 }
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
367 }
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
368
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
369
2681
b94b367d8b4d Minor refactoring, docs.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2679
diff changeset
370 /** Return length of a single line. */
b94b367d8b4d Minor refactoring, docs.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2679
diff changeset
371 public static double lineLength(Line2D line) {
b94b367d8b4d Minor refactoring, docs.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2679
diff changeset
372 double xDiff = line.getX1() - line.getX2();
b94b367d8b4d Minor refactoring, docs.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2679
diff changeset
373 double yDiff = line.getY1() - line.getY2();
b94b367d8b4d Minor refactoring, docs.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2679
diff changeset
374 return Math.sqrt(xDiff*xDiff + yDiff*yDiff);
b94b367d8b4d Minor refactoring, docs.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2679
diff changeset
375 }
b94b367d8b4d Minor refactoring, docs.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2679
diff changeset
376
b94b367d8b4d Minor refactoring, docs.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2679
diff changeset
377
b94b367d8b4d Minor refactoring, docs.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2679
diff changeset
378 /**
b94b367d8b4d Minor refactoring, docs.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2679
diff changeset
379 * @param points the riverbed.
b94b367d8b4d Minor refactoring, docs.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2679
diff changeset
380 */
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
381 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
382 List<Point2D> points,
a7def20539fb flys/issue317: Removed dependency from cross section demo app.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 938
diff changeset
383 double waterlevel
a7def20539fb flys/issue317: Removed dependency from cross section demo app.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 938
diff changeset
384 ) {
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
385 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
386 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
387
a7def20539fb flys/issue317: Removed dependency from cross section demo app.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 938
diff changeset
388 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
389 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
390 double linesLength = 0.0f;
1651
a7def20539fb flys/issue317: Removed dependency from cross section demo app.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 938
diff changeset
391
a7def20539fb flys/issue317: Removed dependency from cross section demo app.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 938
diff changeset
392 for (Iterator<Line2D> iter = lines.iterator(); iter.hasNext();) {
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393 Line2D line = iter.next();
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394 Point2D p1 = line.getP1();
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395 Point2D p2 = line.getP2();
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396 lxs.add(p1.getX());
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397 lys.add(p1.getY());
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398 lxs.add(p2.getX());
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399 lys.add(p2.getY());
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parents: 2650
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400
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401 // Length calculation.
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parents: 2679
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402 linesLength += lineLength(line);
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parents: 2650
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403
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parents: 938
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404 if (iter.hasNext()) {
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405 lxs.add(Double.NaN);
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parents: 938
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406 lys.add(Double.NaN);
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parents: 938
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407 }
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 938
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408 }
a7def20539fb flys/issue317: Removed dependency from cross section demo app.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 938
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409
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parents: 2650
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410 return new LineData(
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parents: 2650
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411 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.
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parents: 2673
diff changeset
412 linesLength, listAndArea.area
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parents: 2650
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413 );
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parents: 938
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414 }
933
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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415 }
34136924661b Generate water level lines for given cross section.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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416 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org