01: /*
02: * $RCSfile: GeneralizedStripFlags.java,v $
03: *
04: * Copyright 1998-2008 Sun Microsystems, Inc. All Rights Reserved.
05: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
06: *
07: * This code is free software; you can redistribute it and/or modify it
08: * under the terms of the GNU General Public License version 2 only, as
09: * published by the Free Software Foundation. Sun designates this
10: * particular file as subject to the "Classpath" exception as provided
11: * by Sun in the LICENSE file that accompanied this code.
12: *
13: * This code is distributed in the hope that it will be useful, but WITHOUT
14: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16: * version 2 for more details (a copy is included in the LICENSE file that
17: * accompanied this code).
18: *
19: * You should have received a copy of the GNU General Public License version
20: * 2 along with this work; if not, write to the Free Software Foundation,
21: * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
22: *
23: * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
24: * CA 95054 USA or visit www.sun.com if you need additional information or
25: * have any questions.
26: *
27: * $Revision: 1.5 $
28: * $Date: 2008/02/28 20:17:21 $
29: * $State: Exp $
30: */
31:
32: package javax.media.j3d;
33:
34: /**
35: * A class which implements GeneralizedStripFlags provides the means to access
36: * the vertex replace code flags associated with each vertex of a generalized
37: * strip. This allows a flexible representation of generalized strips for
38: * various classes and makes it possible to provide a common subset of static
39: * methods which operate only on their topology.
40: *
41: * @see GeneralizedStrip
42: * @see GeneralizedVertexList
43: */
44: interface GeneralizedStripFlags {
45:
46: /**
47: * This flag indicates that a vertex starts a new strip with clockwise
48: * winding.
49: */
50: static final int RESTART_CW = 0;
51:
52: /**
53: * This flag indicates that a vertex starts a new strip with
54: * counter-clockwise winding.
55: */
56: static final int RESTART_CCW = 1;
57:
58: /**
59: * This flag indicates that the next triangle in the strip is defined by
60: * replacing the middle vertex of the previous triangle in the strip.
61: */
62: static final int REPLACE_MIDDLE = 2;
63:
64: /**
65: * This flag indicates that the next triangle in the strip is defined by
66: * replacing the oldest vertex of the previous triangle in the strip.
67: */
68: static final int REPLACE_OLDEST = 3;
69:
70: /**
71: * This constant is used to indicate that triangles with clockwise vertex
72: * winding are front facing.
73: */
74: static final int FRONTFACE_CW = 0;
75:
76: /**
77: * This constant is used to indicate that triangles with counter-clockwise
78: * vertex winding are front facing.
79: */
80: static final int FRONTFACE_CCW = 1;
81:
82: /**
83: * Return the number of flags. This should be the same as the number of
84: * vertices in the generalized strip.
85: */
86: int getFlagCount();
87:
88: /**
89: * Return the flag associated with the vertex at the specified index.
90: */
91: int getFlag(int index);
92: }
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