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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 P4_TO_P8
#include <p4est_algorithms.h>
#include <p4est_bits.h>
#include <p4est_extended.h>
#include <p4est_communication.h>
#include <p4est_vtk.h>
#else
#include <p8est_algorithms.h>
#include <p8est_bits.h>
#include <p8est_extended.h>
#include <p8est_communication.h>
#include <p8est_vtk.h>
#endif
#ifndef P4_TO_P8
static int refine_level = 5;
#else
static int refine_level = 3;
#endif
static int
refine_fn (p4est_t * p4est, p4est_topidx_t which_tree,
p4est_quadrant_t * quadrant)
{
int cid;
if (which_tree == 2 || which_tree == 3) {
return 0;
}
cid = p4est_quadrant_child_id (quadrant);
if (cid == P4EST_CHILDREN - 1 ||
(quadrant->x >= P4EST_LAST_OFFSET (P4EST_MAXLEVEL - 2) &&
quadrant->y >= P4EST_LAST_OFFSET (P4EST_MAXLEVEL - 2)
#ifdef P4_TO_P8
&& quadrant->z >= P4EST_LAST_OFFSET (P4EST_MAXLEVEL - 2)
#endif
)) {
return 1;
}
if ((int) quadrant->level >= (refine_level - (int) (which_tree % 3))) {
return 0;
}
if (quadrant->level == 1 && cid == 2) {
return 1;
}
if (quadrant->x == P4EST_QUADRANT_LEN (2) &&
quadrant->y == P4EST_LAST_OFFSET (2)) {
return 1;
}
if (quadrant->y >= P4EST_QUADRANT_LEN (2)) {
return 0;
}
return 1;
}
static int
coarsen_fn (p4est_t * p4est, p4est_topidx_t which_tree,
p4est_quadrant_t * q[])
{
SC_CHECK_ABORT (p4est_quadrant_is_familypv (q), "Coarsen invocation");
return q[0]->y < P4EST_ROOT_LEN / 2;
}
static void
replace_fn (p4est_t * p4est, p4est_topidx_t which_tree,
int num_outgoing, p4est_quadrant_t * outgoing[],
int num_incoming, p4est_quadrant_t * incoming[])
{
p4est_quadrant_t **fam;
p4est_quadrant_t *p;
P4EST_ASSERT (num_outgoing + num_incoming == P4EST_CHILDREN + 1);
P4EST_ASSERT (num_outgoing == 1 || num_incoming == 1);
if (num_outgoing == 1) {
p = outgoing[0];
fam = incoming;
}
else {
p = incoming[0];
fam = outgoing;
}
SC_CHECK_ABORT (p4est_quadrant_is_familypv (fam),
P4EST_STRING "_replace_t family is not a family");
SC_CHECK_ABORT (p4est_quadrant_is_parent (p, fam[0]),
P4EST_STRING
"_replace_t incoming and outgoing don't align");
}
int
main (int argc, char **argv)
{
int mpirank, mpisize;
int mpiret;
sc_MPI_Comm mpicomm;
p4est_t *p4est;
p4est_connectivity_t *connectivity;
mpiret = sc_MPI_Init (&argc, &argv);
SC_CHECK_MPI (mpiret);
mpicomm = sc_MPI_COMM_WORLD;
mpiret = sc_MPI_Comm_size (mpicomm, &mpisize);
SC_CHECK_MPI (mpiret);
mpiret = sc_MPI_Comm_rank (mpicomm, &mpirank);
SC_CHECK_MPI (mpiret);
sc_init (mpicomm, 1, 1, NULL, SC_LP_DEFAULT);
p4est_init (NULL, SC_LP_DEFAULT);
/* create connectivity and forest structures */
#ifdef P4_TO_P8
connectivity = p8est_connectivity_new_rotcubes ();
#else
connectivity = p4est_connectivity_new_star ();
#endif
p4est = p4est_new_ext (mpicomm, connectivity, 15, 0, 0, 1, NULL, NULL);
p4est_refine_ext (p4est, 1, P4EST_QMAXLEVEL, refine_fn, NULL, replace_fn);
p4est_coarsen_ext (p4est, 1, 0, coarsen_fn, NULL, replace_fn);
p4est_balance_ext (p4est, P4EST_CONNECT_FULL, NULL, replace_fn);
p4est_destroy (p4est);
p4est_connectivity_destroy (connectivity);
sc_finalize ();
mpiret = sc_MPI_Finalize ();
SC_CHECK_MPI (mpiret);
return 0;
}
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