Add the option to use user defined regions for the elliptic smoothing

procedure. Works by setting the admbase variables to zero in these
regions before doing the smoothing. Needs some testing.


git-svn-id: http://svn.einsteintoolkit.org/cactus/EinsteinInitialData/NoExcision/trunk@12 4ec1db94-0e4f-0410-ada3-8bed251432c9

1 files changed, 75 insertions, 0 deletions

diff --git a/src/cg.F90 b/src/cg.F90
index ec4866e..c3dd6c8 100644
--- a/src/cg.F90
+++ b/src/cg.F90
@@ -645,3 +645,78 @@ subroutine NoExcision_CGApplySym(CCTK_ARGUMENTS)
   end if
 
 end subroutine NoExcision_CGApplySym
+
+
+subroutine NoExcision_Set_Zero(CCTK_ARGUMENTS)
+
+  use NoExcision_mod
+
+  DECLARE_CCTK_ARGUMENTS
+  DECLARE_CCTK_PARAMETERS
+  DECLARE_CCTK_FUNCTIONS
+
+  CCTK_REAL :: cx, cy, cz, radx, rady, radz
+  CCTK_REAL, dimension(:,:,:), allocatable :: dist2
+  integer :: n
+  CCTK_INT :: my_level, n_levels
+
+  call NoExcision_levelinfo ( cctkGH, my_level, n_levels )
+
+  if ( my_level == n_levels-1 ) then
+
+    allocate ( dist2(cctk_lsh(1),cctk_lsh(2),cctk_lsh(3)) )
+
+    do n = 1, num_regions
+
+      cx = centre_x(n)
+      cy = centre_y(n)
+      cz = centre_z(n)
+
+      if (CCTK_EQUALS(region_shape(n), "sphere")) then
+
+        radx = radius(n)
+        rady = radius(n)
+        radz = radius(n)
+
+      else if (CCTK_EQUALS(region_shape(n), "ellipsoid")) then
+
+        radx = radius_x(n)
+        rady = radius_y(n)
+        radz = radius_z(n)
+
+      else
+
+        call CCTK_WARN (0, "internal error")
+
+      end if 
+
+      dist2 =   ((x - cx) / radx)**2 + ((y - cy) / rady)**2 &
+           &  + ((z - cz) / radz)**2
+
+      where ( dist2 <= one )
+
+        gxx = zero
+        gxy = zero
+        gxz = zero
+        gyy = zero
+        gyz = zero
+        gzz = zero
+        kxx = zero
+        kxy = zero
+        kxz = zero
+        kyy = zero
+        kyz = zero
+        kzz = zero
+        alp = zero
+        betax = zero
+        betay = zero
+        betaz = zero
+
+      end where
+
+    end do
+
+    deallocate ( dist2 )
+
+  end if
+end subroutine NoExcision_Set_Zero