annotate flys-backend/src/main/java/de/intevation/flys/model/CrossSectionLine.java @ 5826:9438e9259213

Repaired internal references
author Sascha L. Teichmann <teichmann@intevation.de>
date Thu, 25 Apr 2013 11:44:26 +0200
parents 3b001c273f1b
children
rev   line source
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1 package de.intevation.flys.model;
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2
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3 import java.io.Serializable;
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4
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5 import java.util.ArrayList;
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6 import java.util.List;
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7 import java.util.Collections;
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8 import java.util.Comparator;
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9
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10 import java.awt.geom.Point2D;
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11
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12 import javax.persistence.Entity;
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13 import javax.persistence.Id;
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14 import javax.persistence.Table;
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15 import javax.persistence.GeneratedValue;
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16 import javax.persistence.Column;
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17 import javax.persistence.SequenceGenerator;
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18 import javax.persistence.GenerationType;
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19 import javax.persistence.OneToOne;
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20 import javax.persistence.OneToMany;
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21 import javax.persistence.JoinColumn;
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22
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23 import org.apache.log4j.Logger;
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24
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25 @Entity
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26 @Table(name = "cross_section_lines")
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27 public class CrossSectionLine
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28 implements Serializable
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29 {
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30 private static Logger logger = Logger.getLogger(CrossSectionLine.class);
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31
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32 public static final double EPSILON = 1e-4;
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33
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34 public static final double TOO_SMALL = 0.2;
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35 public static final double TOO_BIG = 2500;
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36
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37 private Integer id;
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38 private Double km;
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39 private CrossSection crossSection;
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40
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41 private List<CrossSectionPoint> points;
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42
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43 public static final Comparator<CrossSectionPoint> COL_POS_CMP =
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44 new Comparator<CrossSectionPoint>() {
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45 @Override
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46 public int compare(CrossSectionPoint a, CrossSectionPoint b) {
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47 double xa = a.getX().doubleValue();
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48 double xb = b.getX().doubleValue();
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49 double d = xa - xb;
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50 if (d < -EPSILON) return -1;
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51 if (d > +EPSILON) return +1;
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52 int diff = a.getColPos() - b.getColPos();
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53 return diff < 0 ? -1 : diff > 0 ? +1 : 0;
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54 }
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55 };
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56
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57
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58 public static final boolean isValid(double x) {
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59 x = Math.abs(x);
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60 return x > TOO_SMALL && x < TOO_BIG;
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61 }
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62
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63 public static final boolean isValid(Point2D p) {
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64 return isValid(p.getX()) && isValid(p.getY());
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65 }
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66
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67
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68 public CrossSectionLine() {
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69 }
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71 public CrossSectionLine(CrossSection crossSection, Double km) {
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72 this.crossSection = crossSection;
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73 this.km = km;
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74 }
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75
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76 @Id
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77 @SequenceGenerator(
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78 name = "SEQUENCE_CROSS_SECTION_LINES_ID_SEQ",
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79 sequenceName = "CROSS_SECTION_LINES_ID_SEQ",
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80 allocationSize = 1)
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81 @GeneratedValue(
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82 strategy = GenerationType.SEQUENCE,
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83 generator = "SEQUENCE_CROSS_SECTION_LINES_ID_SEQ")
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84 @Column(name = "id")
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85 public Integer getId() {
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86 return id;
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87 }
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88
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89 public void setId(Integer id) {
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90 this.id = id;
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91 }
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92
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93 @Column(name = "km")
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94 public Double getKm() {
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95 return km;
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96 }
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97
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98 public void setKm(Double km) {
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99 this.km = km;
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100 }
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101
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102 @OneToOne
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103 @JoinColumn(name = "cross_section_id")
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104 public CrossSection getCrossSection() {
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105 return crossSection;
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106 }
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107
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108 public void setCrossSection(CrossSection CrossSection) {
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109 this.crossSection = crossSection;
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110 }
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111
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112 @OneToMany
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113 @JoinColumn(name="cross_section_line_id")
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114 public List<CrossSectionPoint> getPoints() {
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115 return points;
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116 }
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117
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118 public void setPoints(List<CrossSectionPoint> points) {
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119 this.points = points;
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120 }
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121
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122
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123 public List<Point2D> fetchCrossSectionLinesPoints() {
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124
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125 List<CrossSectionPoint> linePoints =
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126 new ArrayList<CrossSectionPoint>(getPoints());
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127
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128 Collections.sort(linePoints, COL_POS_CMP);
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129
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130 List<Point2D> points = new ArrayList<Point2D>(linePoints.size());
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131 for (CrossSectionPoint p: linePoints) {
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132 double x = p.getX().doubleValue();
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133 double y = p.getY().doubleValue();
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134 if (isValid(x) && isValid(y)) {
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135 points.add(new Point2D.Double(x, y));
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136 }
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137 }
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138
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139 return points;
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140 }
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141
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142 public double [][] fetchCrossSectionProfile() {
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143 return fetchCrossSectionProfile(fetchCrossSectionLinesPoints());
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144 }
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145
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146 public static double [][] fetchCrossSectionProfile(List<Point2D> points) {
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147
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148 int P = points.size();
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149
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150 double [] xs = new double[P];
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151 double [] ys = new double[P];
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152
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153 if (P > 0) {
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154 xs[0] = points.get(0).getX();
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155 ys[0] = points.get(0).getY();
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156
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157 for (int i = 1; i < P; i++) {
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158 Point2D p = points.get(i);
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159 double x = p.getX();
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160 double y = p.getY();
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161
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162 if (x <= xs[i-1]) {
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163 x = xs[i-1] + EPSILON;
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164 }
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165
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166 xs[i] = x;
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167 ys[i] = y;
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168 }
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169 }
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170
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171 return new double [][] { xs, ys };
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172 }
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173 }
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174 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :

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