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# Interface definition for thorn AHFinderDirect
# $Header$
implements: AHFinderDirect
inherits: Grid ADMBase StaticConformal SpaceMask IO always
# include file provided by SpaceMask
USES INCLUDE: SpaceMask.h
# provides aliased functions for various other thorns
# FIXME: this really belongs in Erik Schnetter's "generic surface" thorn
# ... returns local coordinate origin for a given horizon
SUBROUTINE HorizonLocalCoordinateOrigin \
(CCTK_INT IN horizon_number, \
CCTK_REAL OUT origin_x, CCTK_REAL OUT origin_y, CCTK_REAL OUT origin_z)
# ... computes horizon radius in the direction of each (x,y,z) point,
# or -1.0 if this horizon wasn't found
# ... more precisely:
# For each (x,y,z), consider the ray from the local coordinate
# origin through (x,y,z). This function computes the Euclidean
# distance between the local coordinate origin and this ray's
# intersection with the horizon, or -1.0 if this horizon wasn't
# found the last time we searched for it.
SUBROUTINE HorizonRadiusInDirection \
(CCTK_INT IN horizon_number, \
CCTK_INT IN N_points, \
CCTK_REAL IN ARRAY x, CCTK_REAL IN ARRAY y, CCTK_REAL IN ARRAY z, \
CCTK_REAL OUT ARRAY radius)
PROVIDES FUNCTION HorizonLocalCoordinateOrigin \
WITH AHFinderDirect_local_coordinate_origin \
LANGUAGE C
PROVIDES FUNCTION HorizonRadiusInDirection \
WITH AHFinderDirect_radius_in_direction \
LANGUAGE C
# uses aliased function maybe provided by DriftCorrect
SUBROUTINE SetDriftCorrectPosition(CCTK_POINTER IN GH, CCTK_REAL IN x, \
CCTK_REAL IN y, \
CCTK_REAL IN z)
USES FUNCTION SetDriftCorrectPosition
################################################################################
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