Mercurial > dive4elements > river
annotate backend/src/main/java/org/dive4elements/river/model/CrossSectionLine.java @ 9709:b74f817435fe
comment removed
author | dnt_bjoernsen <d.tironi@bjoernsen.de> |
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date | Wed, 27 Jan 2021 11:47:38 +0100 |
parents | 8abe94270f32 |
children | 0a5239a1e46e |
rev | line source |
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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.model; |
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10 |
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11 import java.io.Serializable; |
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12 |
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13 import java.util.ArrayList; |
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14 import java.util.List; |
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15 import java.util.Collections; |
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16 import java.util.Comparator; |
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17 |
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18 import java.awt.geom.Point2D; |
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19 |
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20 import javax.persistence.Entity; |
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21 import javax.persistence.Id; |
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22 import javax.persistence.Table; |
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23 import javax.persistence.GeneratedValue; |
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24 import javax.persistence.Column; |
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25 import javax.persistence.SequenceGenerator; |
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26 import javax.persistence.GenerationType; |
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27 import javax.persistence.OneToOne; |
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28 import javax.persistence.OneToMany; |
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29 import javax.persistence.JoinColumn; |
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30 |
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31 import org.apache.log4j.Logger; |
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32 |
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33 @Entity |
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34 @Table(name = "cross_section_lines") |
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35 public class CrossSectionLine |
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36 implements Serializable |
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37 { |
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38 private static Logger log = Logger.getLogger(CrossSectionLine.class); |
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39 |
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40 public static final double EPSILON = 1e-4; |
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41 |
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42 private Integer id; |
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43 private Double km; |
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44 private CrossSection crossSection; |
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45 |
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46 private List<CrossSectionPoint> points; |
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47 |
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48 public static final Comparator<CrossSectionPoint> COL_POS_CMP = |
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49 new Comparator<CrossSectionPoint>() { |
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50 @Override |
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51 public int compare(CrossSectionPoint a, CrossSectionPoint b) { |
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52 double xa = a.getX().doubleValue(); |
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53 double xb = b.getX().doubleValue(); |
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54 double d = xa - xb; |
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55 if (d < -EPSILON) return -1; |
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56 if (d > +EPSILON) return +1; |
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57 int diff = a.getColPos() - b.getColPos(); |
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58 return diff < 0 ? -1 : diff > 0 ? +1 : 0; |
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59 } |
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60 }; |
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61 |
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62 |
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63 public CrossSectionLine() { |
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64 } |
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65 |
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66 public CrossSectionLine(CrossSection crossSection, Double km) { |
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67 this.crossSection = crossSection; |
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68 this.km = km; |
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69 } |
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70 |
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71 @Id |
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72 @SequenceGenerator( |
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73 name = "SEQUENCE_CROSS_SECTION_LINES_ID_SEQ", |
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74 sequenceName = "CROSS_SECTION_LINES_ID_SEQ", |
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75 allocationSize = 1) |
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76 @GeneratedValue( |
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77 strategy = GenerationType.SEQUENCE, |
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78 generator = "SEQUENCE_CROSS_SECTION_LINES_ID_SEQ") |
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79 @Column(name = "id") |
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80 public Integer getId() { |
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81 return id; |
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82 } |
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83 |
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84 public void setId(Integer id) { |
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85 this.id = id; |
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86 } |
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87 |
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88 @Column(name = "km") |
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89 public Double getKm() { |
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90 return km; |
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91 } |
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92 |
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93 public void setKm(Double km) { |
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94 this.km = km; |
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95 } |
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96 |
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97 @OneToOne |
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98 @JoinColumn(name = "cross_section_id") |
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99 public CrossSection getCrossSection() { |
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100 return crossSection; |
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101 } |
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102 |
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103 public void setCrossSection(CrossSection crossSection) { |
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104 this.crossSection = crossSection; |
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105 } |
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106 |
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107 @OneToMany |
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108 @JoinColumn(name="cross_section_line_id") |
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109 public List<CrossSectionPoint> getPoints() { |
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110 return points; |
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111 } |
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112 |
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113 public void setPoints(List<CrossSectionPoint> points) { |
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114 this.points = points; |
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115 } |
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116 |
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117 |
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118 public List<Point2D> fetchCrossSectionLinesPoints() { |
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119 |
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120 List<CrossSectionPoint> linePoints = |
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121 new ArrayList<CrossSectionPoint>(getPoints()); |
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122 |
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123 Collections.sort(linePoints, COL_POS_CMP); |
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124 |
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125 List<Point2D> points = new ArrayList<Point2D>(linePoints.size()); |
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126 for (CrossSectionPoint p: linePoints) { |
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127 double x = p.getX().doubleValue(); |
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128 double y = p.getY().doubleValue(); |
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129 points.add(new Point2D.Double(x, y)); |
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130 } |
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131 |
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132 return points; |
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133 } |
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134 |
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135 public double [][] fetchCrossSectionProfile() { |
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136 return fetchCrossSectionProfile(fetchCrossSectionLinesPoints()); |
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137 } |
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138 |
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139 /** double[][] from List<Point2D> */ |
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140 public static double [][] fetchCrossSectionProfile(List<Point2D> points) { |
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141 |
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142 int P = points.size(); |
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143 |
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144 double [] xs = new double[P]; |
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145 double [] ys = new double[P]; |
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146 |
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147 if (P > 0) { |
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148 xs[0] = points.get(0).getX(); |
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149 ys[0] = points.get(0).getY(); |
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150 |
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151 for (int i = 1; i < P; i++) { |
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152 Point2D p = points.get(i); |
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153 double x = p.getX(); |
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154 double y = p.getY(); |
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155 |
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156 if (x <= xs[i-1]) { |
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157 x = xs[i-1] + EPSILON; |
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158 } |
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159 |
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160 xs[i] = x; |
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161 ys[i] = y; |
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162 } |
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163 } |
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164 |
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165 return new double [][] { xs, ys }; |
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166 } |
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167 } |
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168 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |