001: /*
002: * $RCSfile: GeneralizedStripFlags.java,v $
003: *
004: * Copyright (c) 2007 Sun Microsystems, Inc. All rights reserved.
005: *
006: * Redistribution and use in source and binary forms, with or without
007: * modification, are permitted provided that the following conditions
008: * are met:
009: *
010: * - Redistribution of source code must retain the above copyright
011: * notice, this list of conditions and the following disclaimer.
012: *
013: * - Redistribution in binary form must reproduce the above copyright
014: * notice, this list of conditions and the following disclaimer in
015: * the documentation and/or other materials provided with the
016: * distribution.
017: *
018: * Neither the name of Sun Microsystems, Inc. or the names of
019: * contributors may be used to endorse or promote products derived
020: * from this software without specific prior written permission.
021: *
022: * This software is provided "AS IS," without a warranty of any
023: * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
024: * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
025: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
026: * EXCLUDED. SUN MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL
027: * NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF
028: * USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
029: * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR
030: * ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
031: * CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
032: * REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
033: * INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
034: * POSSIBILITY OF SUCH DAMAGES.
035: *
036: * You acknowledge that this software is not designed, licensed or
037: * intended for use in the design, construction, operation or
038: * maintenance of any nuclear facility.
039: *
040: * $Revision: 1.3 $
041: * $Date: 2007/02/09 17:20:22 $
042: * $State: Exp $
043: */
044:
045: package com.sun.j3d.utils.geometry.compression;
046:
047: /**
048: * A class which implements GeneralizedStripFlags provides the means to access
049: * the vertex replace code flags associated with each vertex of a generalized
050: * strip. This allows a flexible representation of generalized strips for
051: * various classes and makes it possible to provide a common subset of static
052: * methods which operate only on their topology.
053: *
054: * @see GeneralizedStrip
055: * @see GeneralizedVertexList
056: */
057: interface GeneralizedStripFlags {
058:
059: /**
060: * This flag indicates that a vertex starts a new strip with clockwise
061: * winding.
062: */
063: static final int RESTART_CW = 0;
064:
065: /**
066: * This flag indicates that a vertex starts a new strip with
067: * counter-clockwise winding.
068: */
069: static final int RESTART_CCW = 1;
070:
071: /**
072: * This flag indicates that the next triangle in the strip is defined by
073: * replacing the middle vertex of the previous triangle in the strip.
074: */
075: static final int REPLACE_MIDDLE = 2;
076:
077: /**
078: * This flag indicates that the next triangle in the strip is defined by
079: * replacing the oldest vertex of the previous triangle in the strip.
080: */
081: static final int REPLACE_OLDEST = 3;
082:
083: /**
084: * This constant is used to indicate that triangles with clockwise vertex
085: * winding are front facing.
086: */
087: static final int FRONTFACE_CW = 0;
088:
089: /**
090: * This constant is used to indicate that triangles with counter-clockwise
091: * vertex winding are front facing.
092: */
093: static final int FRONTFACE_CCW = 1;
094:
095: /**
096: * Return the number of flags. This should be the same as the number of
097: * vertices in the generalized strip.
098: */
099: int getFlagCount();
100:
101: /**
102: * Return the flag associated with the vertex at the specified index.
103: */
104: int getFlag(int index);
105: }
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