Mercurial > dive4elements > river

comparison flys-backend/src/main/java/de/intevation/flys/model/CrossSectionLine.java @ 2877:f0a67bc0e777 2.7

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merged flys-backend/2.7
author Thomas Arendsen Hein <thomas@intevation.de>
date Fri, 28 Sep 2012 12:14:31 +0200
parents 2f874d14ac68
children 2ae732e2c65c
comparison
equal deleted inserted replaced
2793:6310b1582f2d 2877:f0a67bc0e777
1 package de.intevation.flys.model;
2
3 import java.io.Serializable;
4
5 import java.util.ArrayList;
6 import java.util.List;
7 import java.util.Collections;
8 import java.util.Comparator;
9
10 import java.awt.geom.Point2D;
11
12 import javax.persistence.Entity;
13 import javax.persistence.Id;
14 import javax.persistence.Table;
15 import javax.persistence.GeneratedValue;
16 import javax.persistence.Column;
17 import javax.persistence.SequenceGenerator;
18 import javax.persistence.GenerationType;
19 import javax.persistence.OneToOne;
20 import javax.persistence.OneToMany;
21 import javax.persistence.JoinColumn;
22
23 import org.apache.log4j.Logger;
24
25 @Entity
26 @Table(name = "cross_section_lines")
27 public class CrossSectionLine
28 implements Serializable
29 {
30 private static Logger logger = Logger.getLogger(CrossSectionLine.class);
31
32 public static final double EPSILON = 1e-4;
33
34 public static final double TOO_SMALL = 0.2;
35 public static final double TOO_BIG = 500;
36
37 private Integer id;
38 private Double km;
39 private CrossSection crossSection;
40
41 private List<CrossSectionPoint> points;
42
43 public static final Comparator<CrossSectionPoint> COL_POS_CMP =
44 new Comparator<CrossSectionPoint>() {
45 @Override
46 public int compare(CrossSectionPoint a, CrossSectionPoint b) {
47 double xa = a.getX().doubleValue();
48 double xb = b.getX().doubleValue();
49 double d = xa - xb;
50 if (d < -EPSILON) return -1;
51 if (d > +EPSILON) return +1;
52 int diff = a.getColPos() - b.getColPos();
53 return diff < 0 ? -1 : diff > 0 ? +1 : 0;
54 }
55 };
56
57
58 public static final boolean isValid(double x) {
59 x = Math.abs(x);
60 return x > TOO_SMALL && x < TOO_BIG;
61 }
62
63 public static final boolean isValid(Point2D p) {
64 return isValid(p.getX()) && isValid(p.getY());
65 }
66
67
68 public CrossSectionLine() {
69 }
70
71 public CrossSectionLine(CrossSection crossSection, Double km) {
72 this.crossSection = crossSection;
73 this.km = km;
74 }
75
76 @Id
77 @SequenceGenerator(
78 name = "SEQUENCE_CROSS_SECTION_LINES_ID_SEQ",
79 sequenceName = "CROSS_SECTION_LINES_ID_SEQ",
80 allocationSize = 1)
81 @GeneratedValue(
82 strategy = GenerationType.SEQUENCE,
83 generator = "SEQUENCE_CROSS_SECTION_LINES_ID_SEQ")
84 @Column(name = "id")
85 public Integer getId() {
86 return id;
87 }
88
89 public void setId(Integer id) {
90 this.id = id;
91 }
92
93 @Column(name = "km")
94 public Double getKm() {
95 return km;
96 }
97
98 public void setKm(Double km) {
99 this.km = km;
100 }
101
102 @OneToOne
103 @JoinColumn(name = "cross_section_id")
104 public CrossSection getCrossSection() {
105 return crossSection;
106 }
107
108 public void setCrossSection(CrossSection CrossSection) {
109 this.crossSection = crossSection;
110 }
111
112 @OneToMany
113 @JoinColumn(name="cross_section_line_id")
114 public List<CrossSectionPoint> getPoints() {
115 return points;
116 }
117
118 public void setPoints(List<CrossSectionPoint> points) {
119 this.points = points;
120 }
121
122
123 public List<Point2D> fetchCrossSectionLinesPoints() {
124
125 List<CrossSectionPoint> linePoints =
126 new ArrayList<CrossSectionPoint>(getPoints());
127
128 Collections.sort(linePoints, COL_POS_CMP);
129
130 List<Point2D> points = new ArrayList<Point2D>(linePoints.size());
131 for (CrossSectionPoint p: linePoints) {
132 double x = p.getX().doubleValue();
133 double y = p.getY().doubleValue();
134 if (isValid(x) && isValid(y)) {
135 points.add(new Point2D.Double(x, y));
136 }
137 }
138
139 return points;
140 }
141
142 public double [][] fetchCrossSectionProfile() {
143 return fetchCrossSectionProfile(fetchCrossSectionLinesPoints());
144 }
145
146 public static double [][] fetchCrossSectionProfile(List<Point2D> points) {
147
148 int P = points.size();
149
150 double [] xs = new double[P];
151 double [] ys = new double[P];
152
153 if (P > 0) {
154 xs[0] = points.get(0).getX();
155 ys[0] = points.get(0).getY();
156
157 for (int i = 1; i < P; i++) {
158 Point2D p = points.get(i);
159 double x = p.getX();
160 double y = p.getY();
161
162 if (x <= xs[i-1]) {
163 x = xs[i-1] + EPSILON;
164 }
165
166 xs[i] = x;
167 ys[i] = y;
168 }
169 }
170
171 return new double [][] { xs, ys };
172 }
173 }
174 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
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