org.scijava.java3d.utils.geometry.compression.GeneralizedStripFlags Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of j3dutils Show documentation
Utility functions for the Java 3D Graphics API
The newest version!
/*
 * Copyright (c) 2007 Sun Microsystems, Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistribution of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 *
 * - Redistribution in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in
 *   the documentation and/or other materials provided with the
 *   distribution.
 *
 * Neither the name of Sun Microsystems, Inc. or the names of
 * contributors may be used to endorse or promote products derived
 * from this software without specific prior written permission.
 *
 * This software is provided "AS IS," without a warranty of any
 * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
 * EXCLUDED. SUN MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL
 * NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF
 * USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
 * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR
 * ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
 * CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
 * REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
 * INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGES.
 *
 * You acknowledge that this software is not designed, licensed or
 * intended for use in the design, construction, operation or
 * maintenance of any nuclear facility.
 *
 */

package org.scijava.java3d.utils.geometry.compression;

/**
 * A class which implements GeneralizedStripFlags provides the means to access
 * the vertex replace code flags associated with each vertex of a generalized
 * strip.  This allows a flexible representation of generalized strips for
 * various classes and makes it possible to provide a common subset of static
 * methods which operate only on their topology.
 *
 * @see GeneralizedStrip
 * @see GeneralizedVertexList
 */
interface GeneralizedStripFlags {

    /**
     * This flag indicates that a vertex starts a new strip with clockwise
     * winding.
     */
    static final int RESTART_CW = 0 ;

    /**
     * This flag indicates that a vertex starts a new strip with
     * counter-clockwise winding.
     */
    static final int RESTART_CCW = 1 ;

    /**
     * This flag indicates that the next triangle in the strip is defined by
     * replacing the middle vertex of the previous triangle in the strip.
     */
    static final int REPLACE_MIDDLE = 2 ;

    /**
     * This flag indicates that the next triangle in the strip is defined by
     * replacing the oldest vertex of the previous triangle in the strip.
     */
    static final int REPLACE_OLDEST = 3 ;

    /**
     * This constant is used to indicate that triangles with clockwise vertex
     * winding are front facing.
     */
    static final int FRONTFACE_CW  = 0 ;

    /**
     * This constant is used to indicate that triangles with counter-clockwise
     * vertex winding are front facing.
     */
    static final int FRONTFACE_CCW = 1 ;

    /**
     * Return the number of flags.  This should be the same as the number of
     * vertices in the generalized strip.
     */
    int getFlagCount() ;

    /**
     * Return the flag associated with the vertex at the specified index.
     */
    int getFlag(int index) ;
}