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/* $Header$ */
#include <assert.h>
#include <stdio.h>
#include "cctk.h"
#include "cctk_Arguments.h"
#include "cctk_Parameters.h"
#include "util_Table.h"
#include <math.h>
#define REFLEVEL round(log10((CCTK_REAL)(cctkGH->cctk_levfac[0]))/log10(2.0))
#define ABS(x) ((x)>=0?x:-x)
double pt_loc_old_x[10];
double pt_loc_old_y[10];
double pt_loc_old_z[10];
void PunctureTracker (CCTK_ARGUMENTS);
void PunctureTracker_init (CCTK_ARGUMENTS);
void PunctureTracker_init (CCTK_ARGUMENTS)
{
DECLARE_CCTK_PARAMETERS;
DECLARE_CCTK_ARGUMENTS;
int i;
if(pt_verbose>0)
CCTK_INFO("Initializing PunctureTracker");
if((pt_initial_x[0]!=0.0)||(pt_initial_y[0]!=0.0)||(pt_initial_z[0]!=0.0))
for (i=0;i<pt_num_tracked;i++){
pt_loc_x_p[i] = pt_initial_x[i];
pt_loc_y_p[i] = pt_initial_y[i];
pt_loc_z_p[i] = pt_initial_z[i];
}
else{
pt_loc_x_p[0] = par_b;
pt_loc_x_p[1] =-par_b;
pt_loc_y_p[0] = 0.0;
pt_loc_y_p[1] = 0.0;
pt_loc_z_p[0] = 0.0;
pt_loc_z_p[1] = 0.0;
}
for (i=0; i< pt_num_tracked; i++) {
pt_loc_old_x[i] = pt_loc_x_p[i];
pt_loc_old_y[i] = pt_loc_y_p[i];
pt_loc_old_z[i] = pt_loc_z_p[i];
sf_centroid_x[pt_which_surface_to_take[i]]=pt_loc_old_x[i];
sf_centroid_y[pt_which_surface_to_take[i]]=pt_loc_old_y[i];
sf_centroid_z[pt_which_surface_to_take[i]]=pt_loc_old_z[i];
if(pt_verbose>0){
printf("set puncture %d to location=(%g,%g,%g)\n",i,pt_loc_old_x[i],pt_loc_old_y[i],pt_loc_old_z[i]);
}
}
CCTK_INFO("done initializing PunctureTracker");
}
void PunctureTracker (CCTK_ARGUMENTS)
{
DECLARE_CCTK_PARAMETERS;
DECLARE_CCTK_ARGUMENTS;
int n,ierror,i,numpoints;
// portland doesnt like that
//CCTK_REAL pt_betax[pt_num_tracked], pt_betay[pt_num_tracked], pt_betaz[pt_num_tracked];
//so I do that
CCTK_REAL pt_betax[10];
CCTK_REAL pt_betay[10];
CCTK_REAL pt_betaz[10];
int operator_handle, param_table_handle, coordsys_handle;
int input_array_indices[3];
const void *interp_coords[3];
void *output_arrays[3];
const CCTK_INT input_array_type_codes[3] = { CCTK_VARIABLE_REAL, CCTK_VARIABLE_REAL, CCTK_VARIABLE_REAL};
const CCTK_INT output_array_type_codes[3]= { CCTK_VARIABLE_REAL, CCTK_VARIABLE_REAL, CCTK_VARIABLE_REAL};
if(pt_verbose >0)
CCTK_INFO("tracking Punctures");
interp_coords[0] = (const void *) pt_loc_x_p;
interp_coords[1] = (const void *) pt_loc_y_p;
interp_coords[2] = (const void *) pt_loc_z_p;
operator_handle = -1;
coordsys_handle = -1;
param_table_handle = -1;
// set interpolation handles
operator_handle = CCTK_InterpHandle("Lagrange polynomial interpolation");
if (operator_handle < 0) CCTK_WARN(0, "can’t get interpolation handle!");
param_table_handle = Util_TableCreateFromString("order=4");
if (param_table_handle < 0) CCTK_WARN(0, "can't ge parameter table!");
coordsys_handle = CCTK_CoordSystemHandle("cart3d");
if (coordsys_handle < 0) CCTK_WARN(0,"can't get coordsys handle!");
output_arrays[0] = (void *) pt_betax;
output_arrays[1] = (void *) pt_betay;
output_arrays[2] = (void *) pt_betaz;
input_array_indices[0] = CCTK_VarIndex ("ADMBase::betax");
input_array_indices[1] = CCTK_VarIndex ("ADMBase::betay");
input_array_indices[2] = CCTK_VarIndex ("ADMBase::betaz");
//only proc 0 does interpolation
numpoints = 0;
if (CCTK_MyProc(cctkGH) == 0)
numpoints = pt_num_tracked;
ierror = CCTK_InterpGridArrays(cctkGH,3,
operator_handle, param_table_handle,coordsys_handle,
numpoints,
CCTK_VARIABLE_REAL,
interp_coords,
3,input_array_indices,
3,output_array_type_codes,
output_arrays);
if (ierror<0)
CCTK_VWarn(CCTK_WARN_ABORT, __LINE__, __FILE__, CCTK_THORNSTRING,
"error return from interpolator ierror=%d",(int)ierror);
for (n=0; n< pt_num_tracked; n++) {
if(pt_verbose>4)
printf("at location of puncture %i is \
(beta,betay,betaz) = (%f,%f,%f)\n",\
n,pt_betax[n],pt_betay[n],pt_betaz[n]);
pt_shiftx[n] = pt_betax[n];
pt_shifty[n] = pt_betay[n];
pt_shiftz[n] = pt_betaz[n];
}
}
void update_punc_loc(CCTK_ARGUMENTS){
DECLARE_CCTK_PARAMETERS;
DECLARE_CCTK_ARGUMENTS;
CCTK_REAL pt_dt,pt_x_diff,pt_y_diff,pt_z_diff;
int n,ierr;
int regrid_now = 0;
char parname[200];
char value[200];
pt_dt = CCTK_DELTA_TIME;
for (n=0; n< pt_num_tracked; n++) {
//correct small errors
if (pt_shiftx[n] < 10e-14) pt_shiftx[n] = 0.0;
if (pt_shifty[n] < 10e-14) pt_shifty[n] = 0.0;
if (pt_shiftz[n] < 10e-14) pt_shiftz[n] = 0.0;
//update
pt_loc_x[n] = pt_loc_x_p[n] - pt_shiftx[n] * pt_dt;
pt_loc_y[n] = pt_loc_y_p[n] - pt_shifty[n] * pt_dt;
pt_loc_z[n] = pt_loc_z_p[n] - pt_shiftz[n] * pt_dt;
//info
if(pt_verbose>0) CCTK_VInfo(CCTK_THORNSTRING,
"Puncture %d is at (x,y,z)=(%f,%f,%f)",n,pt_loc_x[n],pt_loc_y[n],pt_loc_z[n]);
if(pt_verbose > 2){
printf(" pt_dt is %f\n",pt_dt);
printf(" pt_loc_x_p is %f\n",pt_loc_x_p[n]);
printf(" pt_shiftx is %f\n",pt_shiftx[n]);
fflush(stdout);
}
//have we moved enough to regrid now?
printf("regrid_now is %i",regrid_now);
if((pt_regrid)&&(cctkGH->cctk_iteration>1)){
if(!regrid_now){
pt_x_diff = ABS(pt_loc_old_x[n] - pt_loc_x[n]);
pt_y_diff = ABS(pt_loc_old_y[n] - pt_loc_y[n]);
pt_z_diff = ABS(pt_loc_old_z[n] - pt_loc_z[n]);
if(pt_verbose > 2){
printf(" pt_x_diff is %f\n",pt_x_diff);
printf(" pt_y_diff is %f\n",pt_y_diff);
printf(" pt_z_diff is %f\n",pt_z_diff);
printf(" pt_reg_buf : %f\n",pt_regrid_buffer);
}
if((pt_x_diff > pt_regrid_buffer)||
(pt_y_diff > pt_regrid_buffer)||
(pt_z_diff > pt_regrid_buffer)){
regrid_now = 1;
}
}
}
}
if(regrid_now){
regrid_now = 0;
if(pt_verbose>0) CCTK_INFO("regridding now");
for (n=0; n< pt_num_tracked; n++) {
ierr = CCTK_ParameterSet ("regrid_every","CarpetReGrid2","1");
assert (ierr>=0);
ierr = sprintf (parname, "position_x_%d", n+1);
assert (ierr>=0);
ierr = sprintf (value, "%f", pt_loc_x[n]);
assert (ierr>=0);
ierr = CCTK_ParameterSet(parname,"CarpetRegrid2",value);
//info
if(pt_verbose>3) printf("%c was set to %c",parname,value);
ierr = sprintf (parname, "position_y_%d", n+1);
assert (ierr>=0 && ierr<sizeof parname);
ierr = sprintf (value, "%f", pt_loc_y[n]);
assert (ierr>=0 && ierr<sizeof value);
ierr = CCTK_ParameterSet(parname,"CarpetRegrid2",value);
//info
if(pt_verbose>3) printf("%c was set to %c",parname,value);
ierr = sprintf (parname, "position_z_%d", n+1);
assert (ierr>=0 && ierr<sizeof parname);
ierr = sprintf (value, "%f", pt_loc_z[n]);
assert (ierr>=0 && ierr<sizeof value);
ierr = CCTK_ParameterSet(parname,"CarpetRegrid2",value);
//info
if(pt_verbose>3) printf("%c was set to %c",parname,value);
//remember this location
pt_loc_old_x[n] = pt_loc_x[n];
pt_loc_old_y[n] = pt_loc_y[n];
pt_loc_old_z[n] = pt_loc_z[n];
}
}
else{
ierr = CCTK_ParameterSet ("regrid_every","CarpetReGrid2","-1");
if(pt_verbose>0) CCTK_INFO("not regridding now");
regrid_now = 0; //just to make sure
}
if(pt_verbose>0)
CCTK_INFO ("done");
}
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