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/*@@
@file FlatBoundary.c
@date Mon Mar 15 15:09:00 1999
@author Gerd Lanfermann, Gabrielle Allen
@desc
Flat boundary conditions for a given GF group or single GF
@enddesc
@@*/
/*#define DEBUG_BOUND*/
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <ctype.h>
#include <stdarg.h>
#include <string.h>
#include "cctk.h"
#include "cctk_Flesh.h"
#include "cctk_parameters.h"
#include "cctk_Comm.h"
#include "cctk_Groups.h"
#include "cctk_GHExtensions.h"
#include "CactusBase/CartGrid3D/src/Symmetry.h"
#include "cctk_Misc.h"
#include "cctk_WarnLevel.h"
#include "cctk_FortranString.h"
void ApplyFlat3D(cGH *GH,int *doBC,int *lsh,int *stencil_size,CCTK_REAL *var);
/*@@
@routine ApplyFlatBC
@date Mon Mar 15 15:19:54 1999
@author Gerd Lanfermann
@desc
Routine applies the flat (copying) BCs when called from C or
Fortran (via wrapper) with the groupname. The actual GF assignment is
carried out in Fortran by FortranFlatBC.
@enddesc
@calls FortranFlatBC
@history
@endhistory
@@*/
/* Call with implementation::group notation, eg: ApplyFlatBC(admgerd::metric) */
void ApplyFlatBC(cGH *GH, int *stencil_size, char *name) {
DECLARE_CCTK_PARAMETERS
SymmetryGHex *sGHex; /* the Symmetry GHextension */
int first,last,index; /* grid function indices */
int type; /* type 0 for a group, type 1 for a variable */
int num; /* index number of the group */
int *doBC; /* flags if lower/upper BCs are
applied (1) or not (0)
indexing is as in bbox: 0 lower 1 upper */
/* Get the pointer to the SymmetryGHextension */
sGHex = (SymmetryGHex*)GH->extensions[CCTK_GHExtensionHandle("Symmetry")];
/* Allocate memory for doBC */
doBC = (int *)malloc(2*(GH->cctk_dim)*sizeof(int));
/* Decide if we have a group or a variable, and get the index */
/* type = 1 (group), type = 0 (var), type = -1 (neither) */
num = CCTK_GroupIndex(name);
if (num < 0)
{
num = CCTK_VarIndex(name);
if (num > 0)
{
type = 1; /* Variable */
}
else
{
type = -1;
CCTK_WARN(0,"Name in ApplyFlatBC is neither a group nor a variable");
}
}
else
{
type = 0; /* Group */
}
/* Find the first GF index, and the number of GFs */
if (type == 0)
{
first = CCTK_FirstVarIndexI(num);
last = first+CCTK_NumVarsInGroupI(num)-1;
if (first == -1 || last == -1)
CCTK_WARN(0,"Invalid group number used");
}
else
{
first = num;
last = num;
}
/* Loop over the all GFs */
for (index=first; index<=last; index++) {
/* ... check that we actually have a grid function (and not a scalar) */
if (CCTK_GroupTypeFromVarI(index)==GROUP_GF) {
/* The rule is: IF we have no symmetries for the lower grid boundary,
(GFSym==ESYM_NOSYM or ==ESYM_UNSET) AND we have a lower(upper) bound
AND we have enough gridpoints THEN apply BC */
int idim;
for (idim=0;idim<GH->cctk_dim;idim++)
{
doBC[idim*2]=(((sGHex->GFSym[index][idim*2]==GFSYM_NOSYM)||
(sGHex->GFSym[index][idim*2]==GFSYM_UNSET)) &&
GH->cctk_lsh[idim]>1 && GH->cctk_bbox[idim*2]);
doBC[idim*2+1] = (((sGHex->GFSym[index][idim*2+1]==GFSYM_NOSYM)||
(sGHex->GFSym[index][idim*2+1]==GFSYM_UNSET)) &&
GH->cctk_lsh[idim]>1 && GH->cctk_bbox[idim*2+1]);
}
if (GH->cctk_dim == 3)
{
ApplyFlat3D(GH,doBC,GH->cctk_lsh,stencil_size,GH->data[index][0]);
}
else
{
CCTKi_NotYetImplemented("Flat boundaries in other than 3D");
}
}
}
if (doBC) free(doBC);
}
void FMODIFIER FORTRAN_NAME(ApplyFlatBC)(cGH *GH, int *stencil_size, ONE_FORTSTRING_ARG) {
ONE_FORTSTRING_CREATE(name)
ApplyFlatBC(GH,stencil_size,name);
free(name);
}
void ApplyFlat3D(cGH *GH,int *doBC,int *lsh,int *stencil_size,CCTK_REAL *var)
{
if (doBC[0] == 1)
{
int j,k,sw;
#ifdef DEBUG_BOUND
printf("Applying flat boundary for lower x\n");
#endif
for (k=0;k<lsh[2];k++)
{
for (j=0;j<lsh[1];j++)
{
for (sw=0;sw<stencil_size[0];sw++)
{
var[CCTK_GFINDEX3D(GH,sw,j,k)]
= var[CCTK_GFINDEX3D(GH,stencil_size[0],j,k)];
}
}
}
}
if (doBC[1] == 1)
{
int j,k,sw;
#ifdef DEBUG_BOUND
printf("Applying flat boundary for upper x\n");
#endif
for (k=0;k<lsh[2];k++)
{
for (j=0;j<lsh[1];j++)
{
for (sw=0;sw<stencil_size[0];sw++)
{
var[CCTK_GFINDEX3D(GH,lsh[0]-sw-1,j,k)]
= var[CCTK_GFINDEX3D(GH,lsh[0]-stencil_size[0]-1,j,k)];
}
}
}
}
if (doBC[2] == 1)
{
int i,k,sw;
#ifdef DEBUG_BOUND
printf("Applying flat boundary for lower y\n");
#endif
for (k=0;k<lsh[2];k++)
{
for (i=0;i<lsh[0];i++)
{
for (sw=0;sw<stencil_size[1];sw++)
{
var[CCTK_GFINDEX3D(GH,i,sw,k)]
= var[CCTK_GFINDEX3D(GH,i,stencil_size[1],k)];
}
}
}
}
if (doBC[3] == 1)
{
int i,k,sw;
#ifdef DEBUG_BOUND
printf("Applying flat boundary for upper y\n");
#endif
for (k=0;k<lsh[2];k++)
{
for (i=0;i<lsh[0];i++)
{
for (sw=0;sw<stencil_size[1];sw++)
{
var[CCTK_GFINDEX3D(GH,i,lsh[1]-sw-1,k)]
= var[CCTK_GFINDEX3D(GH,i,lsh[1]-stencil_size[1]-1,k)];
}
}
}
}
if (doBC[4] == 1)
{
int i,j,sw;
#ifdef DEBUG_BOUND
printf("Applying flat boundary for lower z\n");
#endif
for (j=0;j<lsh[1];j++)
{
for (i=0;i<lsh[0];i++)
{
for (sw=0;sw<stencil_size[2];sw++)
{
var[CCTK_GFINDEX3D(GH,i,j,sw)]
= var[CCTK_GFINDEX3D(GH,i,j,stencil_size[2])];
}
}
}
}
if (doBC[5] == 1)
{
int i,j,sw;
#ifdef DEBUG_BOUND
printf("Applying flat boundary for upper z\n");
#endif
for (j=0;j<lsh[1];j++)
{
for (i=0;i<lsh[0];i++)
{
for (sw=0;sw<stencil_size[2];sw++)
{
var[CCTK_GFINDEX3D(GH,i,j,lsh[2]-sw-1)]
= var[CCTK_GFINDEX3D(GH,i,j,lsh[2]-stencil_size[2]-1)];
}
}
}
}
}
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