B.3.8 Face Tree

Index:	59
Scheme symbol:	xf-face-tree
C macro:	XF_FACE_TREE
Status:	only for grids with hanging-node adaption

This section indicates the face hierarchy of the grid containing hanging nodes. The format of the section is as follows:

(59 (face-id0 face-id1 parent-zone-id child-zone-id)
(
 number-of-kids kid-id-0 kid-id-1 ... kid-id-n
 .
 .
 .
))

where,

face-id0	=	index of the first parent face in the section
face-id1	=	index of the last parent face in the section
parent-zone-id	=	ID of the zone containing parent faces
child-zone-id	=	ID of the zone containing children faces
number-of-kids	=	the number of children of the parent face
kid-id-n	=	the face IDs of the children

These are in hexadecimal format.