subd_edge.h

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/*
 * Original code in the public domain -- castanyo@yahoo.es
 * 
 * Modifications copyright (c) 2011, Blender Foundation.
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 * * Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * * Redistributions 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.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef __SUBD_EDGE_H__
#define __SUBD_EDGE_H__

#include "subd_mesh.h"

CCL_NAMESPACE_BEGIN

/* Subd Half Edge */

class SubdEdge
{
public:
    int id;
    
    SubdEdge *next;
    SubdEdge *prev;
    SubdEdge *pair;
    SubdVert *vert;
    SubdFace *face;

    SubdEdge(int id_)
    {
        id = id_;
        next = NULL;
        prev = NULL;
        pair = NULL;
        vert = NULL;
        face = NULL;
    }
    
    /* vertex queries */
    SubdVert *from() { return vert; }
    SubdVert *to() { return next->vert; }

    /* face queries */
    bool is_boundary() { return !(face && pair->face); }
};

CCL_NAMESPACE_END

#endif /* __SUBD_EDGE_H__ */