hull.h

Go to the documentation of this file.

/*
 * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
 * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice including the dates of first publication and
 * either this permission notice or a reference to
 * http://oss.sgi.com/projects/FreeB/
 * shall be included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 * Except as contained in this notice, the name of Silicon Graphics, Inc.
 * shall not be used in advertising or otherwise to promote the sale, use or
 * other dealings in this Software without prior written authorization from
 * Silicon Graphics, Inc.
 */
 
/*
 * hull.h
 *
 */
 
#ifndef __gluhull_h_
#define __gluhull_h_
 
//#include "trimline.h"
#include "trimregion.h"
//#include "trimvertex.h"
#include "gridtrimvertex.h"
 
struct Gridline;
class Uarray;
 
class Hull : virtual public TrimRegion {
public:
                Hull( void );
                ~Hull( void );
    void        init( void );
    GridTrimVertex *    nextlower( GridTrimVertex * );
    GridTrimVertex *    nextupper( GridTrimVertex * );
private:
    struct Side {
    Trimline    *left;
    Gridline        *line;
    Trimline    *right;
    long        index;
    };
    
    Side        lower;
    Side        upper;
    Trimline        fakeleft;
    Trimline        fakeright;
};
 
 
#endif /* __gluhull_h_ */