VertexPatches.hpp

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/* *****************************************************************
    MESQUITE -- The Mesh Quality Improvement Toolkit

    Copyright 2006 Lawrence Livermore National Laboratory.  Under
    the terms of Contract B545069 with the University of Wisconsin --
    Madison, Lawrence Livermore National Laboratory retains certain
    rights in this software.

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public License
    (lgpl.txt) along with this library; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    (2006) [email protected]

  ***************************************************************** */

#ifndef MSQ_VERTEX_PATCHES_HPP
#define MSQ_VERTEX_PATCHES_HPP

/** \file VertexPatches.hpp
 *  \brief
 *  \author Jason Kraftcheck
 */

#include "Mesquite.hpp"
#include "PatchSet.hpp"

namespace MBMesquite
{

/**\brief A PatchSet representing a decomposition of the mesh
 *        into patches containing a single free vertex and the
 *        adjacent elements
 */
class VertexPatches : public PatchSet
{
  public:
    /**\brief constructor
     *\param num_layers Number of layers of elements adjacent to each vertex
     *\param free_vertices_only Skip fixed vertices if true.
     */
    inline VertexPatches( unsigned p_num_layers = 1, bool p_free_vertices_only = true )
        : numLayers( p_num_layers ), freeVertices( p_free_vertices_only )
    {
    }

    MESQUITE_EXPORT
    ~VertexPatches();

    /**\brief Set number of layers of elements adjacent to each vertex */
    inline void set_num_layers( unsigned num_layers )
    {
        numLayers = num_layers;
    }

    /**\brief Get number of layers of elements adjacent to each vertex */
    inline unsigned get_num_layers() const
    {
        return numLayers;
    }

    /**\brief Skip fixed vertices if true. */
    inline void free_vertices_only( bool yesno )
    {
        freeVertices = yesno;
    }

    /**\brief Skip fixed vertices if true. */
    inline bool free_vertices_only() const
    {
        return freeVertices;
    }

    /**\brief Get a list of handles, one for each patch */
    MESQUITE_EXPORT
    virtual void get_patch_handles( std::vector< PatchHandle >& patch_handles_out, MsqError& err );

    /**\brief Get the mesh entities in a patch
     *
     * Given one of the handles returned by get_patch_handles(),
     * return the mesh entities in the corresponding patch.  If
     * only free vertices are to be returned, this funtion will return
     * empty lists for culled vertices.
     *
     *\param patch_handle one of the handles returned by get_patch_handles()
     *\param elem_handles_out the list of elements in the mesh
     *\param free_vertices_out the list of vertices interior to the patch
     */
    MESQUITE_EXPORT
    virtual void get_patch( PatchHandle patch_handle,
                            std::vector< Mesh::ElementHandle >& elem_handles_out,
                            std::vector< Mesh::VertexHandle >& free_vertices_out,
                            MsqError& err );

  private:
    std::vector< size_t > junk;

    unsigned numLayers;  //!< number of layers of adjacent elements
    bool freeVertices;   //!< skip fixed vertices if true
};

}  // namespace MBMesquite

#endif