Mercurial > dive4elements > gnv-client

comparison gnv-artifacts/src/main/java/de/intevation/gnv/jfreechart/PolygonDataset.java @ 1119:7c4f81f74c47

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merged gnv-artifacts
author Thomas Arendsen Hein <thomas@intevation.de>
date Fri, 28 Sep 2012 12:14:00 +0200
parents f953c9a559d8
children
comparison
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1027:fca4b5eb8d2f 1119:7c4f81f74c47
1 /*
2 * Copyright (c) 2010 by Intevation GmbH
3 *
4 * This program is free software under the LGPL (>=v2.1)
5 * Read the file LGPL.txt coming with the software for details
6 * or visit http://www.gnu.org/licenses/ if it does not exist.
7 */
8
9 package de.intevation.gnv.jfreechart;
10
11 import java.util.ArrayList;
12 import java.util.Collection;
13 import java.util.List;
14
15 import org.jfree.data.Range;
16
17 import org.jfree.data.general.AbstractSeriesDataset;
18
19 /**
20 * An implementation of {@link org.jfree.data.xy.XYDataset} to create 2D charts.
21 * This dataset contains several <code>PolygonSeries</code> and is used by
22 * <code>PolygonRenderer</code> to draw its items into a 2D chart.
23 *
24 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
25 */
26 public class PolygonDataset
27 extends AbstractSeriesDataset
28 {
29 /**
30 * PolygonSeries included in this Dataset
31 */
32 private List data;
33
34
35 /**
36 * Constructor.
37 */
38 public PolygonDataset() {
39 data = new ArrayList();
40 }
41
42 /**
43 * Constructs a new PolygonDataset containing multiple PolygonSeries.
44 *
45 * @param series A collection containing some PolygonSeries.
46 */
47 public PolygonDataset(Collection series) {
48 data = new ArrayList(series);
49 }
50
51 /**
52 * Constructs a PolygonDataset with a single PolygonSeries.
53 *
54 * @param series A PolygonSeries.
55 */
56 public PolygonDataset(PolygonSeries series) {
57 this();
58
59 if (series != null) {
60 data.add(series);
61 }
62 }
63
64
65 /**
66 *
67 * @param series
68 */
69 public void addSeries(PolygonSeries series) {
70 if (series == null)
71 throw new IllegalArgumentException("Null 'series' argument.");
72
73 data.add(series);
74 }
75
76 /**
77 *
78 * @param series
79 */
80 public void addAllSeries(Collection<PolygonSeries> series) {
81 data.addAll(series);
82 }
83
84 /**
85 * Retrieves the x-axis range of all PolygonSeries in this dataset.
86 *
87 * @return range of the x-axis.
88 */
89 public Range getDomainBounds() {
90 double lower = Double.POSITIVE_INFINITY;
91 double upper = Double.NEGATIVE_INFINITY;
92 int seriesCount = getSeriesCount();
93
94 for (int s = 0; s < seriesCount; s++) {
95 PolygonSeries series = getSeries(s);
96
97 Range domainRange = series.getDomainBounds();
98 double minX = domainRange.getLowerBound();
99 if (!Double.isNaN(minX)) {
100 lower = Math.min(lower, minX);
101 }
102
103 double maxX = domainRange.getUpperBound();
104 if (!Double.isNaN(maxX)) {
105 upper = Math.max(upper, maxX);
106 }
107 }
108
109 return new Range(lower, upper);
110 }
111
112
113 /**
114 * Retrieves the y-axis range of all PolygonSeries in this dataset.
115 *
116 * @return the y-axis range.
117 */
118 public Range getRangeBounds() {
119 double lower = Double.POSITIVE_INFINITY;
120 double upper = Double.NEGATIVE_INFINITY;
121 int seriesCount = getSeriesCount();
122
123 for (int i = 0; i < seriesCount; i++) {
124 PolygonSeries series = getSeries(i);
125
126 Range range = series.getRangeBounds();
127 double minX = range.getLowerBound();
128 if (!Double.isNaN(minX)) {
129 lower = Math.min(lower, minX);
130 }
131
132 double maxX = range.getUpperBound();
133 if (!Double.isNaN(maxX)) {
134 upper = Math.max(upper, maxX);
135 }
136 }
137
138 return new Range(lower, upper);
139 }
140
141
142 /**
143 * Returns the number of series in this dataset.
144 *
145 * @return the number of series in this dataset.
146 */
147 public int getSeriesCount() {
148 return data.size();
149 }
150
151
152 /**
153 * Returns the key for a series.
154 *
155 * @param index Index of a specific series.
156 * @return the series key of the series with the given index.
157 */
158 public Comparable getSeriesKey(int index) {
159 return ((PolygonSeries)data.get(index)).getKey();
160 }
161
162
163 /**
164 *
165 * @param idx Index.
166 * @return the series with the given index.
167 */
168 public PolygonSeries getSeries(int idx) {
169 return (PolygonSeries)data.get(idx);
170 }
171 }
172 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
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