/*
 *~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 *
 *<LicenseText>
 *
 * CitcomS by Louis Moresi, Shijie Zhong, Lijie Han, Eh Tan,
 * Clint Conrad, Michael Gurnis, and Eun-seo Choi.
 * Copyright (C) 1994-2005, California Institute of Technology.
 *
 * This program 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.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 *</LicenseText>
 *
 *~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */

#include <stdlib.h>
#include "global_defs.h"
#include "citcom_init.h"

#define PI 3.14159

// COLAT 
// OR THETA RANGE = (0, PI)

// COLON 
// OR FI RANGE = (0, 2*PI)

// RADIUS RANGE = (0, 1)

#define INITIAL_COLAT_START   1.832600
#define INITIAL_COLAT_END     1.885000
#define INITIAL_COLON_START   3.174900
#define INITIAL_COLON_END     3.176500
#define INITIAL_RADIUS_START  0.984300
#define INITIAL_RADIUS_END    1.000000

void set_weak_viscosity_zone(struct All_variables *E, double colat_start, double colat_end, 
													  double colon_start, double colon_end, 
													  double radius_start, double radius_end)
{
	E->weak_viscosity_zone.coLat.start  = colat_start;
	E->weak_viscosity_zone.coLat.end    = colat_end;
	E->weak_viscosity_zone.coLon.start  = colon_start;
	E->weak_viscosity_zone.coLon.end    = colon_end;
	E->weak_viscosity_zone.radius.start = radius_start;
	E->weak_viscosity_zone.radius.end   = radius_end;
}

struct All_variables* citcom_init(MPI_Comm *world)
{
  int get_process_identifier();

  struct All_variables *E;
  int rank, nproc;

  E = (struct All_variables*) malloc(sizeof(struct All_variables));

  MPI_Comm_rank(*world, &rank);
  MPI_Comm_size(*world, &nproc);

  E->control.PID = get_process_identifier();
  E->parallel.world = *world;
  E->parallel.nproc = nproc;
  E->parallel.me = rank;

  /* fprintf(stderr,"%d in %d processpors, E at %p pid=%d\n",
          rank, nproc, E, E->control.PID); */

  E->monitor.solution_cycles=0;
  E->control.keep_going=1;

  E->control.total_iteration_cycles=0;
  E->control.total_v_solver_calls=0;
    
  E->weak_viscosity_zone.visc_reduction=0.1;
  printf("Weak viscosity zone reduction set to %10.8g\n", E->weak_viscosity_zone.visc_reduction);

  /* set weak viscosity zone parameters */
  set_weak_viscosity_zone(E,INITIAL_COLAT_START,INITIAL_COLAT_END,
						    INITIAL_COLON_START,INITIAL_COLON_END,
							INITIAL_RADIUS_START,INITIAL_RADIUS_END);
  
  return(E);
}

void citcom_finalize(struct All_variables *E, int status)
{
    void output_finalize(struct All_variables*);
    void parallel_process_finalize();

    output_finalize(E);
    parallel_process_finalize();
    exit(status);
}