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/*@@
@file Bitant.c
@date Tue Nov 2 08:10:56 CET 1999
@author Gabrielle Allen
@desc
Set up origin for bitant plane
@enddesc
@@*/
#include "cctk.h"
#include "cctk_Arguments.h"
#include "cctk_Parameters.h"
static char *rcsid = "$Header$";
CCTK_FILEVERSION(CactusBase_CartGrid3D_Bitant_c)
void bitant_byspacing(CCTK_ARGUMENTS,
CCTK_REAL this_dx,
CCTK_REAL this_dy,
CCTK_REAL this_dz,
CCTK_REAL *x_origin,
CCTK_REAL *y_origin,
CCTK_REAL *z_origin)
{
DECLARE_CCTK_ARGUMENTS
DECLARE_CCTK_PARAMETERS
if (CCTK_EQUALS(bitant_plane,"xy"))
{
if (no_origin && no_originx)
{
*x_origin = (0.5 - cctk_gsh[0]/2)*this_dx;
}
else
{
*x_origin = (- cctk_gsh[0]/2)*this_dx;
}
if (no_origin && no_originy)
{
*y_origin = (0.5 - cctk_gsh[1]/2)*this_dy;
}
else
{
*y_origin = (- cctk_gsh[1]/2)*this_dy;
}
if (no_origin && no_originz)
{
*z_origin = (- cctk_nghostzones[2]+0.5)*this_dz;
}
else
{
*z_origin = (- cctk_nghostzones[2])*this_dz;
}
}
else if (CCTK_EQUALS(bitant_plane,"xz"))
{
if (no_origin && no_originx)
{
*x_origin = (0.5 - cctk_gsh[0]/2)*this_dx;
}
else
{
*x_origin = (- cctk_gsh[0]/2)*this_dx;
}
if (no_origin && no_originy)
{
*y_origin = (- cctk_nghostzones[1]+0.5)*this_dy;
}
else
{
*y_origin = (- cctk_nghostzones[1])*this_dy;
}
if (no_origin && no_originz)
{
*z_origin = (0.5 - cctk_gsh[2]/2)*this_dz;
}
else
{
*z_origin = (- cctk_gsh[2]/2)*this_dz;
}
}
else if (CCTK_EQUALS(bitant_plane,"yz"))
{
if (no_origin && no_originx)
{
*x_origin = (- cctk_nghostzones[0]+0.5)*this_dx;
}
else
{
*x_origin = (- cctk_nghostzones[0])*this_dx;
}
if (no_origin && no_originy)
{
*y_origin = (0.5 - cctk_gsh[1]/2)*this_dy;
}
else
{
*y_origin = (- cctk_gsh[1]/2)*this_dy;
}
if (no_origin && no_originz)
{
*z_origin = (0.5 - cctk_gsh[2]/2)*this_dz;
}
else
{
*z_origin = (- cctk_gsh[2]/2)*this_dz;
}
}
return;
}
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