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! $Header$
#include "cctk.h"
#include "cctk_Arguments.h"
#include "cctk_Functions.h"
#include "cctk_Parameters.h"
subroutine NoExcision_Overwrite (CCTK_ARGUMENTS)
implicit none
DECLARE_CCTK_ARGUMENTS
DECLARE_CCTK_FUNCTIONS
DECLARE_CCTK_PARAMETERS
CCTK_REAL, parameter :: zero=0
CCTK_REAL :: dist2 (cctk_lsh(1), cctk_lsh(2), cctk_lsh(3))
CCTK_REAL :: cx, cy, cz, rad, width
integer :: n
do n = 1, num_regions
cx = centre_x(n)
cy = centre_y(n)
cz = centre_z(n)
rad = radius(n)
width = smoothing_zone_width(n)
dist2 = (x - cx)**2 + (y - cy)**2 + (z - cz)**2
if (overwrite_geometry(n) /= 0) then
if (conformal_state >= 1) then
where (dist2 <= rad**2)
psi = 1
end where
end if
if (conformal_state >= 2) then
where (dist2 <= rad**2)
psix = 0
psiy = 0
psiz = 0
end where
end if
if (conformal_state >= 3) then
where (dist2 <= rad**2)
psixx = 0
psixy = 0
psixz = 0
psiyy = 0
psiyz = 0
psizz = 0
end where
end if
where (dist2 <= rad**2)
gxx = smooth (gxx, Minkowski_scale(n), dist2)
gxy = smooth (gxy, zero , dist2)
gxz = smooth (gxz, zero , dist2)
gyy = smooth (gyy, Minkowski_scale(n), dist2)
gyz = smooth (gyz, zero , dist2)
gzz = smooth (gzz, Minkowski_scale(n), dist2)
kxx = smooth (kxx, zero , dist2)
kxy = smooth (kxy, zero , dist2)
kxz = smooth (kxz, zero , dist2)
kyy = smooth (kyy, zero , dist2)
kyz = smooth (kyz, zero , dist2)
kzz = smooth (kzz, zero , dist2)
end where
end if
if (overwrite_lapse(n) /= 0) then
where (dist2 <= rad**2)
alp = smooth (alp, lapse_scale(n), dist2)
end where
end if
if (overwrite_shift(n) /= 0) then
if (shift_state /= 0) then
where (dist2 <= rad**2)
betax = smooth (betax, zero, dist2)
betay = smooth (betay, zero, dist2)
betaz = smooth (betaz, zero, dist2)
end where
end if
end if
end do
contains
elemental function smooth (oldval, goodval, dist2) result (newval)
CCTK_REAL :: newval
CCTK_REAL, intent(in) :: oldval
CCTK_REAL, intent(in) :: goodval
CCTK_REAL, intent(in) :: dist2
if (dist2 <= (rad-width)**2) then
newval = goodval
else if (width == 0 .or. dist2 >= rad**2) then
newval = oldval
else
newval = goodval &
& + (oldval - goodval) * (sqrt(dist2) - (rad-width)) / width
end if
end function smooth
end subroutine NoExcision_Overwrite
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