GRHydro_InitData: set Bvec according to UIUC formula

From: Roland Haas <rhaas@tapir.caltech.edu>

git-svn-id: http://svn.einsteintoolkit.org/cactus/EinsteinInitialData/GRHydro_InitData/trunk@198 ac85fae7-cede-4708-beff-ae01c7fa1c26

1 files changed, 6 insertions, 0 deletions

diff --git a/param.ccl b/param.ccl
index 0218b2b..9b741b2 100644
--- a/param.ccl
+++ b/param.ccl
@@ -395,6 +395,12 @@ CCTK_REAL  bondi_beta_sonicpt "Plasma beta parameter at the sonic point. Calcula
   (0:* :: "positive"
 } 1.0
 
+CCTK_KEYWORD bondi_Bvec_method "how to compute the magnetic field vector"
+{
+  "direct"    :: "directly from Cartesian metric"
+  "transform" :: "transform Schwarzschild solution to Kerr Schild"
+} "direct"
+
 CCTK_BOOLEAN bondi_evolve_only_annulus "reset to initial data outside of bondi_freeze_inner_radius and bondi_freeze_outer_radius"
 {
 } "no"