p4est_iterate.h

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/*
  This file is part of p4est.
  p4est is a C library to manage a collection (a forest) of multiple
  connected adaptive quadtrees or octrees in parallel.
 
  Copyright (C) 2010 The University of Texas System
  Additional copyright (C) 2011 individual authors
  Written by Carsten Burstedde, Lucas C. Wilcox, and Tobin Isaac
 
  p4est is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 2 of the License, or
  (at your option) any later version.
 
  p4est 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 General Public License for more details.
 
  You should have received a copy of the GNU General Public License
  along with p4est; if not, write to the Free Software Foundation, Inc.,
  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
 
#ifndef P4EST_ITERATE_H
#define P4EST_ITERATE_H
 
#include <p4est_ghost.h>
 
SC_EXTERN_C_BEGIN;
 
typedef struct p4est_iter_volume_info
{
  p4est_t            *p4est;
  p4est_ghost_t      *ghost_layer;
  p4est_quadrant_t   *quad;    
  p4est_locidx_t      quadid;  
  p4est_topidx_t      treeid;  
}
p4est_iter_volume_info_t;
 
typedef void        (*p4est_iter_volume_t) (p4est_iter_volume_info_t * info,
                                            void *user_data);
 
typedef struct p4est_iter_face_side_full
{
  int8_t              is_ghost; 
  p4est_quadrant_t   *quad;     
  p4est_locidx_t      quadid;   
}
p4est_iter_face_side_full_t;
 
typedef struct p4est_iter_face_side_hanging
{
  int8_t              is_ghost[2];      
  p4est_quadrant_t   *quad[2];          
  p4est_locidx_t      quadid[2];        
}
p4est_iter_face_side_hanging_t;
 
typedef struct p4est_iter_face_side
{
  p4est_topidx_t      treeid;          
  int8_t              face;            
  int8_t              is_hanging;      
  union p4est_iter_face_side_data
  {
    p4est_iter_face_side_full_t full;
 
    p4est_iter_face_side_hanging_t hanging;
  }
  is;
}
p4est_iter_face_side_t;
 
typedef struct p4est_iter_face_info
{
  p4est_t            *p4est;
  p4est_ghost_t      *ghost_layer;
  int8_t              orientation; 
  int8_t              tree_boundary; 
  sc_array_t          sides;    /* array of p4est_iter_face_side_t type */
}
p4est_iter_face_info_t;
 
typedef void        (*p4est_iter_face_t) (p4est_iter_face_info_t * info,
                                          void *user_data);
 
typedef struct p4est_iter_corner_side
{
  p4est_topidx_t      treeid;   
  int8_t              corner;   
  int8_t              is_ghost; 
  p4est_quadrant_t   *quad;
  p4est_locidx_t      quadid;   
  int8_t              faces[2]; 
}
p4est_iter_corner_side_t;
 
typedef struct p4est_iter_corner_info
{
  p4est_t            *p4est;
  p4est_ghost_t      *ghost_layer;
  int8_t              tree_boundary; 
  sc_array_t          sides; 
}
p4est_iter_corner_info_t;
 
typedef void        (*p4est_iter_corner_t) (p4est_iter_corner_info_t * info,
                                            void *user_data);
 
void                p4est_iterate (p4est_t * p4est,
                                   p4est_ghost_t * ghost_layer,
                                   void *user_data,
                                   p4est_iter_volume_t iter_volume,
                                   p4est_iter_face_t iter_face,
                                   p4est_iter_corner_t iter_corner);
 
/*@unused@*/
static inline p4est_iter_corner_side_t *
p4est_iter_cside_array_index_int (sc_array_t * array, int it)
{
  P4EST_ASSERT (array->elem_size == sizeof (p4est_iter_corner_side_t));
  P4EST_ASSERT (it >= 0 && (size_t) it < array->elem_count);
 
  return (p4est_iter_corner_side_t *)
    (array->array + sizeof (p4est_iter_corner_side_t) * (size_t) it);
}
 
/*@unused@*/
static inline p4est_iter_corner_side_t *
p4est_iter_cside_array_index (sc_array_t * array, size_t it)
{
  P4EST_ASSERT (array->elem_size == sizeof (p4est_iter_corner_side_t));
  P4EST_ASSERT (it < array->elem_count);
 
  return (p4est_iter_corner_side_t *)
    (array->array + sizeof (p4est_iter_corner_side_t) * it);
}
 
/*@unused@*/
static inline p4est_iter_face_side_t *
p4est_iter_fside_array_index_int (sc_array_t * array, int it)
{
  P4EST_ASSERT (array->elem_size == sizeof (p4est_iter_face_side_t));
  P4EST_ASSERT (it >= 0 && (size_t) it < array->elem_count);
 
  return (p4est_iter_face_side_t *)
    (array->array + sizeof (p4est_iter_face_side_t) * (size_t) it);
}
 
/*@unused@*/
static inline p4est_iter_face_side_t *
p4est_iter_fside_array_index (sc_array_t * array, size_t it)
{
  P4EST_ASSERT (array->elem_size == sizeof (p4est_iter_face_side_t));
  P4EST_ASSERT (it < array->elem_count);
 
  return (p4est_iter_face_side_t *)
    (array->array + sizeof (p4est_iter_face_side_t) * it);
}
 
SC_EXTERN_C_END;
 
#endif /* !P4EST_ITERATE_H */