# Interface definition for thorn Einstein
# $Header$

implements: einstein
inherits: grid time

USES INCLUDE: CalcTmunu.inc
USES INCLUDE: CalcTmunu_temps.inc
USES INCLUDE: CalcTmunu_rfr.inc

USES INCLUDE HEADER: Symmetry.h

INCLUDES HEADER: Slicing.h in Slicing.h


public:

int flags type = SCALAR
{
  shift_state
  conformal_state
} "State information on shift, conformal and the chosen slicing"

int slicing_flags type = SCALAR
{
  active_slicing_handle
} "Slicing"

real metric type = GF
{
  gxx,gxy,gxz,gyy,gyz,gzz
} "ADM 3-metric"

real curv type = GF
{
  kxx,kxy,kxz,kyy,kyz,kzz
} "ADM extrinsic curvature"

real lapse type = GF
{
  alp
} "ADM lapse function"

real shift type = GF
{
  betax,betay,betaz
} "ADM shift function"

real confac type = GF
{
  psi
} "Conformal factor"

real confac_1derivs type = GF
{
  psix, psiy, psiz
} "First spatial derivatives of conformal factor divided by psi"

real confac_2derivs type = GF
{
  psixx, psixy, psixz, psiyy, psiyz, psizz
} "Second spatial derivatives of conformal factor divided by psi"

real mask type = GF
{
  emask
} "Mask"

private:

# For evaltrK.F
real trace_of_K type = GF
{
  trK 
} "trace of extrinsic curvature"

real detofg type = GF
{
  detg 
} "determinant of the conformal metric"

# For carttoshpere.F (p=phi, q=theta)
real spherical_metric type = GF
{
  grr,gqq,gpp,grq,grp,gqp
} "Metric in spherical coordinates"

real spherical_curv type = GF
{
  krr,kqq,kpp,krq,krp,kqp
} "extrinsic curvature in spherical coordinates"