source: josm/src/org/openstreetmap/josm/data/osm/DataSet.java@ 1

Last change on this file since 1 was 1, checked in by imi, 21 years ago

wiki 19:37, 27. Sep 2005
File size: 3.0 KB
Line 
1package org.openstreetmap.josm.data.osm;
2
3import java.util.List;
4
5import org.openstreetmap.josm.data.Bounds;
6
7/**
8 * DataSet is the data behind one window in the application. It can consist of only a few
9 * points up to the whole osm database. DataSet's can be merged together, split up into
10 * several different ones, saved, (up/down/disk)loaded etc.
11 *
12 * Note, that DataSet is not an osm-primitive, so it has no key association but a few
13 * members to store some information.
14 *
15 * @author imi
16 */
17public class DataSet implements Cloneable {
18
19 /**
20 * human readable name of the data.
21 */
22 public String name;
23
24 /**
25 * human readable description of what the data is about. Space for comments.
26 */
27 public String desc;
28
29 /**
30 * Who recorded/created it.
31 */
32 public String author;
33
34 /**
35 * All nodes goes here, even when included in other data (tracks etc) listed.
36 * This enables the instant conversion of the whole DataSet by iterating over
37 * this data structure.
38 */
39 public List<Node> allNodes;
40
41 /**
42 * All tracks (Streets etc.) in the DataSet.
43 *
44 * The nodes of the track segments of this track must be objects from
45 * the nodes list, however the track segments are stored only in the
46 * track list.
47 */
48 public List<Track> tracks;
49
50 /**
51 * Return the bounds of this DataSet, depending on X/Y values.
52 * The min of the return value is the upper left GeoPoint, the max the lower
53 * down GeoPoint, regarding to the X/Y values.
54 *
55 * Return null, if any point not converted yet or if there are no points at all.
56 *
57 * @return Bounding coordinate structure.
58 */
59 public Bounds getBoundsXY() {
60 if (allNodes.size() == 0)
61 return null;
62
63 Bounds b = new Bounds(allNodes.get(0).coor.clone(), allNodes.get(0).coor.clone());
64 for (Node w : allNodes)
65 {
66 if (Double.isNaN(w.coor.x) || Double.isNaN(w.coor.y))
67 return null;
68 if (w.coor.x < b.min.x)
69 b.min.x = w.coor.x;
70 if (w.coor.y < b.min.y)
71 b.min.y = w.coor.y;
72 if (w.coor.x > b.max.x)
73 b.max.x = w.coor.x;
74 if (w.coor.y > b.max.y)
75 b.max.y = w.coor.y;
76 }
77 return b;
78 }
79
80 /**
81 * Return the bounds of this DataSet, depending on lat/lon values.
82 * The min of the return value is the upper left GeoPoint, the max the lower
83 * down GeoPoint.
84 *
85 * Return null, if any point does not have lat/lon or if there are no
86 * points at all.
87 *
88 * @return Bounding coordinate structure.
89 */
90 public Bounds getBoundsLatLon() {
91 if (allNodes.size() == 0)
92 return null;
93
94 Bounds b = new Bounds(allNodes.get(0).coor.clone(), allNodes.get(0).coor.clone());
95 for (Node w : allNodes)
96 {
97 if (Double.isNaN(w.coor.lat) || Double.isNaN(w.coor.lon))
98 return null;
99 if (w.coor.lat < b.min.lat)
100 b.min.lat = w.coor.lat;
101 if (w.coor.lon < b.min.lon)
102 b.min.lon = w.coor.lon;
103 if (w.coor.lat > b.max.lat)
104 b.max.lat = w.coor.lat;
105 if (w.coor.lon > b.max.lon)
106 b.max.lon = w.coor.lon;
107 }
108 return b;
109 }
110
111 public DataSet clone() {
112 try {return (DataSet)super.clone();} catch (CloneNotSupportedException e) {}
113 return null;
114 }
115}
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