1 /* ============================================================
2 * JRobin : Pure java implementation of RRDTool's functionality
3 * ============================================================
4 *
5 * Project Info: http://www.jrobin.org
6 * Project Lead: Sasa Markovic (saxon@jrobin.org)
7 *
8 * Developers: Sasa Markovic (saxon@jrobin.org)
9 *
10 *
11 * (C) Copyright 2003-2005, by Sasa Markovic.
12 *
13 * This library is free software; you can redistribute it and/or modify it under the terms
14 * of the GNU Lesser General Public License as published by the Free Software Foundation;
15 * either version 2.1 of the License, or (at your option) any later version.
16 *
17 * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
18 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
19 * See the GNU Lesser General Public License for more details.
20 *
21 * You should have received a copy of the GNU Lesser General Public License along with this
22 * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
23 * Boston, MA 02111-1307, USA.
24 */
25 package org.jrobin.graph;
26
27 class PathIterator {
28 private double[] y;
29 private int pos = 0;
30
31 PathIterator(double[] y) {
32 this.y = y;
33 }
34
35 int[] getNextPath() {
36 while (pos < y.length) {
37 if (Double.isNaN(y[pos])) {
38 pos++;
39 }
40 else {
41 int endPos = pos + 1;
42 while (endPos < y.length && !Double.isNaN(y[endPos])) {
43 endPos++;
44 }
45 int[] result = {pos, endPos};
46 pos = endPos;
47 if (result[1] - result[0] >= 2) {
48 return result;
49 }
50 }
51 }
52 return null;
53 }
54 }