Mercurial > dive4elements > gnv-client

comparison gnv-artifacts/src/main/java/de/intevation/gnv/jfreechart/PolygonSeries.java @ 875:5e9efdda6894

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merged gnv-artifacts/1.0
author Thomas Arendsen Hein <thomas@intevation.de>
date Fri, 28 Sep 2012 12:13:56 +0200
parents 22c18083225e
children f953c9a559d8
comparison
equal deleted inserted replaced
722:bb3ffe7d719e 875:5e9efdda6894
1 package de.intevation.gnv.jfreechart;
2
3 import java.util.HashMap;
4 import java.util.Map;
5
6 import org.jfree.data.Range;
7
8 import org.jfree.data.general.Series;
9
10 /**
11 * This class represents a series of polygon items.
12 *
13 * @author <a href="mailto:sascha.teichmann@intevation.de">Sascha Teichmann</a>
14 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
15 */
16 public class PolygonSeries
17 extends Series
18 {
19 /**
20 * Polygons.
21 */
22 protected CompactXYItems [] rings;
23
24 /**
25 * A map containing attribues.
26 */
27 protected Map attributes;
28
29 /**
30 * The unique key of this series.
31 */
32 private static long uniqueKey;
33
34 /**
35 *
36 * @return a unique key.
37 */
38 protected synchronized static Long createUniqueKey() {
39 return new Long(uniqueKey++);
40 }
41
42 /**
43 * Constructor to create an empty PolygonSeries with a unique key.
44 */
45 public PolygonSeries() {
46 this(createUniqueKey(), null);
47 }
48
49 /**
50 *
51 * @param key The key used for this series.
52 * @param rings Polygons.
53 */
54 public PolygonSeries(Comparable key, CompactXYItems [] rings) {
55 this(key, null, rings, new HashMap());
56 }
57
58 /**
59 *
60 * @param key The key used for this series.
61 * @param description A description of this series.
62 * @param rings Polygons.
63 */
64 public PolygonSeries(
65 Comparable key,
66 String description,
67 CompactXYItems[] rings
68 ) {
69 this(key, description, rings, new HashMap());
70 }
71
72 /**
73 *
74 * @param key The key used for this series.
75 * @param description A description of this series.
76 * @param rings Polygons.
77 * @param attributes Some attribues.
78 */
79 public PolygonSeries(
80 Comparable key,
81 String description,
82 CompactXYItems [] rings,
83 Map attributes
84 ) {
85 super(key, description);
86 this.rings = rings;
87 this.attributes = attributes;
88 }
89
90
91 public void setRings(CompactXYItems [] rings) {
92 this.rings = rings;
93 }
94
95
96 public CompactXYItems [] getRings() {
97 return rings;
98 }
99
100
101 public void addRing(CompactXYItems newRing) {
102 if (rings == null) {
103 rings = new CompactXYItems [] { newRing };
104 }
105 else {
106 CompactXYItems [] nRings = new CompactXYItems[rings.length + 1];
107 System.arraycopy(rings, 0, nRings, 0, rings.length);
108 nRings[rings.length] = newRing;
109 rings = nRings;
110 }
111 }
112
113
114 public void addRings(CompactXYItems [] newRings) {
115 if (newRings == null || newRings.length == 0) {
116 return;
117 }
118 if (rings == null || rings.length == 0) {
119 rings = newRings;
120 }
121 else {
122 CompactXYItems [] both =
123 new CompactXYItems[rings.length + newRings.length];
124 System.arraycopy(rings, 0, both, 0, rings.length);
125 System.arraycopy(newRings, 0, both, rings.length, newRings.length);
126 rings = both;
127 }
128 }
129
130
131 public Object getAttribute(Object key) {
132 return attributes.get(key);
133 }
134
135
136 public Object setAttribute(Object key, Object value) {
137 return attributes.put(key, value);
138 }
139
140
141 public int getItemCount() {
142 return rings != null ? rings.length : 0;
143 }
144
145
146 public CompactXYItems getItem(int idx) {
147 return rings[idx];
148 }
149
150
151 public Object removeAttribute(Object key) {
152 return attributes.remove(key);
153 }
154
155
156 public boolean hasAttribute(Object key) {
157 return attributes.containsKey(key);
158 }
159
160
161 /**
162 *
163 * @return the range of the x axis.
164 */
165 public Range getDomainBounds() {
166 double upper = Double.NEGATIVE_INFINITY;
167 double lower = Double.POSITIVE_INFINITY;
168 int count = getItemCount();
169
170 for (int i = 0; i < count; i++) {
171 CompactXYItems items = getItem(i);
172 double minX = items.getMinX();
173 double maxX = items.getMaxX();
174
175 if (!Double.isNaN(minX)) {
176 lower = Math.min(lower, minX);
177 }
178
179 if (!Double.isNaN(maxX)) {
180 upper = Math.max(upper, maxX);
181 }
182 }
183
184 if (lower > upper) {
185 return null;
186 }
187
188 return new Range(lower, upper);
189 }
190
191
192 /**
193 *
194 * @return the range of the y axis.
195 */
196 public Range getRangeBounds() {
197 double upper = Double.NEGATIVE_INFINITY;
198 double lower = Double.POSITIVE_INFINITY;
199 int count = getItemCount();
200
201 for (int i = 0; i < count; i++) {
202 CompactXYItems items = getItem(i);
203 double minY = items.getMinY();
204 double maxY = items.getMaxY();
205
206 if (!Double.isNaN(minY)) {
207 lower = Math.min(lower, minY);
208 }
209
210 if (!Double.isNaN(maxY)) {
211 upper = Math.max(upper, maxY);
212 }
213 }
214
215 if (lower > upper) {
216 return null;
217 }
218
219 return new Range(lower, upper);
220 }
221 }
222 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
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