001: /*
002: The contents of this file are subject to the Common Public Attribution License
003: Version 1.0 (the "License"); you may not use this file except in compliance with
004: the License. You may obtain a copy of the License at
005: http://www.projity.com/license . The License is based on the Mozilla Public
006: License Version 1.1 but Sections 14 and 15 have been added to cover use of
007: software over a computer network and provide for limited attribution for the
008: Original Developer. In addition, Exhibit A has been modified to be consistent
009: with Exhibit B.
010:
011: Software distributed under the License is distributed on an "AS IS" basis,
012: WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for the
013: specific language governing rights and limitations under the License. The
014: Original Code is OpenProj. The Original Developer is the Initial Developer and
015: is Projity, Inc. All portions of the code written by Projity are Copyright (c)
016: 2006, 2007. All Rights Reserved. Contributors Projity, Inc.
017:
018: Alternatively, the contents of this file may be used under the terms of the
019: Projity End-User License Agreeement (the Projity License), in which case the
020: provisions of the Projity License are applicable instead of those above. If you
021: wish to allow use of your version of this file only under the terms of the
022: Projity License and not to allow others to use your version of this file under
023: the CPAL, indicate your decision by deleting the provisions above and replace
024: them with the notice and other provisions required by the Projity License. If
025: you do not delete the provisions above, a recipient may use your version of this
026: file under either the CPAL or the Projity License.
027:
028: [NOTE: The text of this license may differ slightly from the text of the notices
029: in Exhibits A and B of the license at http://www.projity.com/license. You should
030: use the latest text at http://www.projity.com/license for your modifications.
031: You may not remove this license text from the source files.]
032:
033: Attribution Information: Attribution Copyright Notice: Copyright © 2006, 2007
034: Projity, Inc. Attribution Phrase (not exceeding 10 words): Powered by OpenProj,
035: an open source solution from Projity. Attribution URL: http://www.projity.com
036: Graphic Image as provided in the Covered Code as file: openproj_logo.png with
037: alternatives listed on http://www.projity.com/logo
038:
039: Display of Attribution Information is required in Larger Works which are defined
040: in the CPAL as a work which combines Covered Code or portions thereof with code
041: not governed by the terms of the CPAL. However, in addition to the other notice
042: obligations, all copies of the Covered Code in Executable and Source Code form
043: distributed must, as a form of attribution of the original author, include on
044: each user interface screen the "OpenProj" logo visible to all users. The
045: OpenProj logo should be located horizontally aligned with the menu bar and left
046: justified on the top left of the screen adjacent to the File menu. The logo
047: must be at least 100 x 25 pixels. When users click on the "OpenProj" logo it
048: must direct them back to http://www.projity.com.
049: */
050: package com.projity.util;
051:
052: import java.util.Arrays;
053:
054: import org.apache.commons.collections.Closure;
055:
056: /**
057: * Utility methods for working with arrays.
058: *
059: */
060: public abstract class ArrayUtils {
061:
062: /**
063: * Clones a two dimensional array of floats.
064: *
065: * @param array the array.
066: *
067: * @return A clone of the array.
068: */
069: public static double[][] clone(final double[][] array) {
070:
071: if (array == null) {
072: return null;
073: }
074: final double[][] result = new double[array.length][];
075: System.arraycopy(array, 0, result, 0, array.length);
076:
077: for (int i = 0; i < array.length; i++) {
078: final double[] child = array[i];
079: final double[] copychild = new double[child.length];
080: System.arraycopy(child, 0, copychild, 0, child.length);
081: result[i] = copychild;
082: }
083:
084: return result;
085:
086: }
087:
088: public static double[][][] clone(final double[][][] array) { //works only for arrays of n*2 matrix
089:
090: if (array == null) {
091: return null;
092: }
093: final double[][][] result = new double[array.length][2][];
094: System.arraycopy(array, 0, result, 0, array.length);
095:
096: for (int i = 0; i < array.length; i++) {
097: final double[] child0 = array[i][0];
098: final double[] child1 = array[i][1];
099: final double[] copychild0 = new double[child0.length];
100: final double[] copychild1 = new double[child1.length];
101: System.arraycopy(child0, 0, copychild0, 0, child0.length);
102: System.arraycopy(child1, 0, copychild1, 0, child1.length);
103: result[i] = new double[2][];
104: result[i][0] = copychild0;
105: result[i][1] = copychild1;
106: }
107:
108: return result;
109:
110: }
111:
112: /**
113: * Tests two double arrays for equality.
114: *
115: * @param array1 the first array.
116: * @param array2 the second arrray.
117: *
118: * @return A boolean.
119: */
120: public static boolean equal(final double[][] array1,
121: final double[][] array2) {
122: if (array1 == null) {
123: return (array2 == null);
124: }
125:
126: if (array2 == null) {
127: return false;
128: }
129:
130: if (array1.length != array2.length) {
131: return false;
132: }
133:
134: for (int i = 0; i < array1.length; i++) {
135: if (!Arrays.equals(array1[i], array2[i])) {
136: return false;
137: }
138: }
139: return true;
140: }
141:
142: public static void forAllDo(Object[] array, Closure c) {
143: for (int i = 0; i < array.length; i++) {
144: c.execute(array[i]);
145: }
146: }
147: }
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