01: /*
02: * $RCSfile: Edge.java,v $
03: *
04: * Copyright (c) 2007 Sun Microsystems, Inc. All rights reserved.
05: *
06: * Redistribution and use in source and binary forms, with or without
07: * modification, are permitted provided that the following conditions
08: * are met:
09: *
10: * - Redistribution of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: *
13: * - Redistribution in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in
15: * the documentation and/or other materials provided with the
16: * distribution.
17: *
18: * Neither the name of Sun Microsystems, Inc. or the names of
19: * contributors may be used to endorse or promote products derived
20: * from this software without specific prior written permission.
21: *
22: * This software is provided "AS IS," without a warranty of any
23: * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
24: * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
25: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
26: * EXCLUDED. SUN MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL
27: * NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF
28: * USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
29: * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR
30: * ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
31: * CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
32: * REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
33: * INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
34: * POSSIBILITY OF SUCH DAMAGES.
35: *
36: * You acknowledge that this software is not designed, licensed or
37: * intended for use in the design, construction, operation or
38: * maintenance of any nuclear facility.
39: *
40: * $Revision: 1.4 $
41: * $Date: 2007/02/09 17:20:18 $
42: * $State: Exp $
43: */
44:
45: package com.sun.j3d.utils.geometry;
46:
47: // Class created so that the two vertex indices that make up an
48: // edge can be hashed.
49: class Edge {
50:
51: public int v1;
52: public int v2;
53: private static final int HASHCONST = 0xEDCBA987;
54:
55: public int hashCode() {
56: return ((v1 * HASHCONST) << 2) ^ (v2 * HASHCONST);
57: } // end of Edge.hashCode
58:
59: public boolean equals(Object x) {
60: if (!(x instanceof Edge))
61: return false;
62: Edge e = (Edge) x;
63: return (v1 == e.v1) && (v2 == e.v2);
64: } // End of Edge.equals
65:
66: public String toString() {
67: return "(" + v1 + ", " + v2 + ")";
68: } // End of toString
69:
70: public Edge(int a, int b) {
71: v1 = a;
72: v2 = b;
73: }
74:
75: public Edge(Edge e) {
76: v1 = e.v1;
77: v2 = e.v2;
78: }
79:
80: public Edge() {
81: }
82: } // end of class Edge
83:
84: // End of file Edge.java
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