Mercurial > dive4elements > river
annotate flys-backend/src/main/java/de/intevation/flys/model/CrossSectionLine.java @ 5592:e4a59c795ff6
merged.
author | Raimund Renkert <rrenkert@intevation.de> |
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date | Mon, 08 Apr 2013 14:54:32 +0200 |
parents | 3b001c273f1b |
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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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70 |
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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 : |