Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/jfreechart/LevelOrderIndices.java @ 745:d194939ecbaf

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Improvement: Values of Type Geometry which are Points will be prepared as Regions for DB-Query. gnv-artifacts/trunk@785 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Tim Englich <tim.englich@intevation.de>
date Tue, 16 Mar 2010 12:53:37 +0000
parents 20a480753ff9
children c4156275c1e1
rev   line source
450
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
1 package de.intevation.gnv.jfreechart;
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
2
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
3 import java.util.LinkedList;
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
4
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
5 /**
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
6 * @author Sascha L. Teichmann (sascha.teichmann@intevation.de)
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
7 */
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
8 public class LevelOrderIndices
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
9 {
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
10 public interface Visitor {
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
11 Object visit(int index);
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
12 }
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
13
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
14 protected int from;
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
15 protected int to;
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
16
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
17 public LevelOrderIndices() {
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
18 }
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
19
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
20 public LevelOrderIndices(int to) {
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
21 this(0, to);
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
22 }
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
23
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
24 public LevelOrderIndices(int from, int to) {
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
25 this.from = Math.min(from, to);
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
26 this.to = Math.max(from, to);
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
27 }
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
28
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
29 public Object visit(Visitor visitor) {
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
30 LinkedList<int[]> queue = new LinkedList<int[]>();
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
31
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
32 queue.add(new int [] { from, to });
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
33
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
34 while (!queue.isEmpty()) {
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
35 int [] pair = queue.remove();
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
36
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
37 int mid = (pair[0] + pair[1]) >> 1;
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
38
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
39 Object result = visitor.visit(mid);
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
40
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
41 if (result != null) {
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
42 return result;
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
43 }
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
44
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
45 if (mid-1 >= pair[0]) {
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
46 queue.add(new int [] { pair[0], mid-1 });
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
47 }
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
48
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
49 if (mid+1 <= pair[1]) {
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
50 pair[0] = mid+1;
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
51 queue.add(pair);
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
52 }
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
53 }
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
54
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
55 return null;
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
56 }
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
57 }
20a480753ff9 Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
58 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org