/*
 *~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 *
 *<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>
 *
 *~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */
/*

routines that deal with GMT/netcdf grd I/O as supported through
the ggrd subroutines of the hc package

*/

#include <math.h>
#include "global_defs.h"
#include "parsing.h"
#include "parallel_related.h"
#include "composition_related.h"

#ifdef USE_GGRD

#include "hc.h"			/* ggrd and hc packages */

void ggrd_init_tracer_flavors(struct All_variables *);
int layers_r(struct All_variables *,float );
void myerror(struct All_variables *,char *);

/* 

assign tracer flavor based on its depth (within top n layers), 
and the grd value


*/
void ggrd_init_tracer_flavors(struct All_variables *E)
{
  int j, kk, number_of_tracers;
  double rad,theta,phi,indbl;
  char char_dummy[1],error[255],gmt_bc[10];
  struct ggrd_gt ggrd_ict[1];	
  /* for dealing with several processors */
  MPI_Status mpi_stat;
  int mpi_rc;  
  int mpi_inmsg, mpi_success_message = 1;

  report(E,"ggrd_init_tracer_flavors: ggrd mat init");

  /* 
     are we global?
  */
  if (E->parallel.nprocxy == 12){
    /* use GMT's geographic boundary conditions */
    sprintf(gmt_bc,"-Lg");
  }else{			/* regional */
    sprintf(gmt_bc,"");
  }
    
  /* 
     initialize the ggrd control 
  */
  if(E->parallel.me > 0){	
    /* wait for previous processor */
    mpi_rc = MPI_Recv(&mpi_inmsg, 1, MPI_INT, (E->parallel.me-1), 
		      0, MPI_COMM_WORLD, &mpi_stat);
  }
  if(ggrd_grdtrack_init_general(FALSE,E->trace.ggrd_file,
				char_dummy,gmt_bc,
				ggrd_ict,FALSE,FALSE)){
    myerror(E,"ggrd tracer init error");
  }
  if(E->parallel.me <  E->parallel.nproc-1){ 
    /* tell the next proc to go ahead */
    mpi_rc = MPI_Send(&mpi_success_message, 1, 
		      MPI_INT, (E->parallel.me+1), 0, MPI_COMM_WORLD);
  }else{
    report(E,"ggrd_init_tracer_flavors: last processor done with ggrd mat init");
  }
  /* init done */
  
  /* assign values to each tracer based on grd file */
  for (j=1;j<=E->sphere.caps_per_proc;j++) {
    number_of_tracers = E->trace.ntracers[j];
    for (kk=1;kk <= number_of_tracers;kk++) {
      rad = E->trace.basicq[j][2][kk]; /* tracer radius */
      if(layers_r(E,rad) <= E->trace.ggrd_layers){
	/* 
	   in top layers 
	*/
	phi =   E->trace.basicq[j][1][kk]; 
	theta = E->trace.basicq[j][0][kk]; 
	/* interpolate from grid */
	if(!ggrd_grdtrack_interpolate_tp((double)theta,(double)phi,
					 ggrd_ict,&indbl,FALSE)){
	  snprintf(error,255,"read_mat_from_ggrd_file: interpolation error at theta: %g phi: %g",
		   theta,phi);
	  myerror(E,error);
	}
	/* limit to 0 or 1 */
	if(indbl < .5)
	  indbl = 0.0;
	else
	  indbl = 1.0;
	E->trace.extraq[j][0][kk]= indbl;
      }else{
	/* below */
	E->trace.extraq[j][0][kk]=0.0;
      }
    }
  }

  /* free grd structure */
  ggrd_grdtrack_free_gstruc(ggrd_ict);
  report(E,"ggrd tracer init done");
}

















#endif