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// horizon_radius.cc -- provide horizon radius & other info for other thorns
// $Header$
//
// <<<access to persistent data>>>
// AHFinderDirect_local_coordinate_origin - provide our local coordinate origin
// AHFinderDirect_horizon_was_found - query if a given horizon was found
// AHFinderDirect_horizon_centroid - query horizon centroid & if it was found
// AHFinderDirect_radius_in_direction - provide r(angle) function
//
#include <stdio.h>
#include <assert.h>
#include <math.h>
#include <vector>
#include "util_Table.h"
#include "cctk.h"
#include "cctk_Arguments.h"
#include "cctk_Parameters.h"
#include "config.h"
#include "stdc.h"
#include "../jtutil/util.hh"
#include "../jtutil/array.hh"
#include "../jtutil/cpm_map.hh"
#include "../jtutil/linear_map.hh"
using jtutil::error_exit;
#include "../patch/coords.hh"
#include "../patch/grid.hh"
#include "../patch/fd_grid.hh"
#include "../patch/patch.hh"
#include "../patch/patch_edge.hh"
#include "../patch/patch_interp.hh"
#include "../patch/ghost_zone.hh"
#include "../patch/patch_system.hh"
#include "../elliptic/Jacobian.hh"
#include "../gr/gfns.hh"
#include "../gr/gr.hh"
#include "horizon_sequence.hh"
#include "BH_diagnostics.hh"
#include "driver.hh"
// all the code in this file is inside this namespace
namespace AHFinderDirect
{
//******************************************************************************
//
// ***** access to persistent data *****
//
extern struct state state;
//******************************************************************************
//
// This function is called (via the magic of function aliasing) by
// other thorns to find out our local coordinate origin for a given AH.
//
// Results:
// This function returns 0 for ok, or -1 if the horizon number is invalid.
//
extern "C"
CCTK_INT AHFinderDirect_local_coordinate_origin
(CCTK_INT horizon_number,
CCTK_REAL* p_origin_x, CCTK_REAL* p_origin_y, CCTK_REAL* p_origin_z)
{
const struct verbose_info& verbose_info = state.verbose_info;
if (! ((horizon_number >= 1) && (horizon_number <= state.N_horizons)) )
then {
CCTK_VWarn(1, __LINE__, __FILE__, CCTK_THORNSTRING,
"AHFinderDirect_local_coordinate_origin():\n"
" horizon_number=%d must be in the range [1,N_horizons=%d]!\n"
,
int(horizon_number), state.N_horizons);
return -1; // *** ERROR RETURN ***
}
assert(state.AH_data_array[horizon_number] != NULL);
const struct AH_data& AH_data = *state.AH_data_array[horizon_number];
assert(AH_data.ps_ptr != NULL);
const patch_system& ps = *AH_data.ps_ptr;
assert(p_origin_x != NULL);
assert(p_origin_y != NULL);
assert(p_origin_z != NULL);
*p_origin_x = ps.origin_x();
*p_origin_y = ps.origin_y();
*p_origin_z = ps.origin_z();
return 0; // *** NORMAL RETURN ***
}
//******************************************************************************
//
// This function is called (via the Cactus flesh function-aliasing mechanism)
// by other thorns to query whether or not the specified horizon was found
// the last time we searched for it.
//
// Results:
// This function returns
// 1 if the horizon was found
// 0 if the horizon was not found
// -1 if the horizon number is invalid.
//
extern "C"
CCTK_INT AHFinderDirect_horizon_was_found(CCTK_INT horizon_number)
{
const struct verbose_info& verbose_info = state.verbose_info;
if (! ((horizon_number >= 1) && (horizon_number <= state.N_horizons)) )
then {
CCTK_VWarn(1, __LINE__, __FILE__, CCTK_THORNSTRING,
"AHFinderDirect_horizon_was_found():\n"
" horizon_number=%d must be in the range [1,N_horizons=%d]!\n"
,
int(horizon_number), state.N_horizons);
return -1; // *** ERROR RETURN ***
}
assert(state.AH_data_array[horizon_number] != NULL);
const struct AH_data& AH_data = *state.AH_data_array[horizon_number];
return AH_data.found_flag ? 1 : 0;
}
//******************************************************************************
//
// This function is called (via the Cactus flesh function-aliasing mechanism)
// by other thorns to query whether or not the specified horizon was found
// the last time we searched for it, and if so, to determine the horizon
// centroid.
//
// Results:
// This function returns:
// 1 if the horizon was found; in this case *centroid_[xyz]_ptr
// are set to the centroid position
// 0 if the horizon was not found; in this case *centroid_[xyz]_ptr
// set to zeros
// negative for an error
//
extern "C"
CCTK_INT AHFinderDirect_horizon_centroid
(CCTK_INT horizon_number,
CCTK_REAL* p_centroid_x, CCTK_REAL* p_centroid_y, CCTK_REAL* p_centroid_z)
{
const struct verbose_info& verbose_info = state.verbose_info;
if (! ((horizon_number >= 1) && (horizon_number <= state.N_horizons)) )
then {
CCTK_VWarn(1, __LINE__, __FILE__, CCTK_THORNSTRING,
"AHFinderDirect_horizon_centroid():\n"
" horizon_number=%d must be in the range [1,N_horizons=%d]!\n"
,
int(horizon_number), state.N_horizons);
return -1; // *** ERROR RETURN ***
}
assert(state.AH_data_array[horizon_number] != NULL);
const struct AH_data& AH_data = *state.AH_data_array[horizon_number];
const struct BH_diagnostics& BH_diagnostics = AH_data.BH_diagnostics;
assert(p_centroid_x != NULL);
assert(p_centroid_y != NULL);
assert(p_centroid_z != NULL);
if (AH_data.found_flag)
then {
*p_centroid_x = BH_diagnostics.centroid_x;
*p_centroid_y = BH_diagnostics.centroid_y;
*p_centroid_z = BH_diagnostics.centroid_z;
return 1;
}
else {
*p_centroid_x = 0.0;
*p_centroid_y = 0.0;
*p_centroid_z = 0.0;
return 0;
}
}
//******************************************************************************
//
// This function is called (via the Cactus flesh function-aliasing mechanism)
// by other thorns to find out a given AH's radius in the direction from
// its local coordinate origin to a given (x,y,z) coordinate or coordinates.
//
// Arguments:
// horizon_number = must be in the range 1 to N_horizons
// N_points = should be >= 0
// x[], y[], z[] = these give the (x,y,z) coordinates
// radius[] = this is set to the horizon radius values (Euclidean distance
// from the local coordinate origin), or to all -1.0 if we didn't
// find this horizon the last time we looked for it
//
// Results:
// This function returns 0 for ok, or -1 if the horizon number is invalid.
//
extern "C"
CCTK_INT AHFinderDirect_radius_in_direction
(CCTK_INT horizon_number,
CCTK_INT N_points,
const CCTK_REAL* const x, const CCTK_REAL* const y, const CCTK_REAL* const z,
CCTK_REAL* const radius)
{
const struct verbose_info& verbose_info = state.verbose_info;
if (! ((horizon_number >= 1) && (horizon_number <= state.N_horizons)) ) {
CCTK_VWarn(1, __LINE__, __FILE__, CCTK_THORNSTRING,
"AHFinderDirect_distance_outside_thorn():\n"
" horizon_number=%d must be in the range [1,N_horizons=%d]!\n"
,
int(horizon_number), state.N_horizons);
return -1; // *** ERROR RETURN ***
}
assert(state.AH_data_array[horizon_number] != NULL);
const struct AH_data& AH_data = *state.AH_data_array[horizon_number];
if (AH_data.found_flag) {
assert(AH_data.ps_ptr != NULL);
const patch_system& ps = *AH_data.ps_ptr;
std::vector<fp> local_xs(N_points);
std::vector<fp> local_ys(N_points);
std::vector<fp> local_zs(N_points);
for (int point = 0 ; point < N_points ; ++point) {
local_xs.at(point) = x[point] - ps.origin_x();
local_ys.at(point) = y[point] - ps.origin_y();
local_zs.at(point) = z[point] - ps.origin_z();
}
ps.radii_in_local_xyz_directions (gfns::gfn__h,
N_points,
& local_xs.front(),
& local_ys.front(),
& local_zs.front(),
radius);
} else {
// if not found
for (int point = 0 ; point < N_points ; ++point) {
radius[point] = -1.0;
}
} // if not found
return 0; // *** NORMAL RETURN ***
}
//******************************************************************************
} // namespace AHFinderDirect
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