This structure holds the data of a local tree including the information about face neighbors. More...

#include <t8_cmesh_types.h>

Data Fields
t8_locidx_t	treeid
	The local number of this tree.

t8_eclass_t	eclass
	The eclass of this tree.

size_t	neigh_offset
	Adding this offset to the adress of the tree yields the array of face_neighbor entries.

size_t	att_offset
	Adding this offset to the adress of the tree yields the array of attribute_info entries.

int	num_attributes
	The number of attributes at this tree.

Detailed Description

This structure holds the data of a local tree including the information about face neighbors.

For those the tree_to_face index is computed as follows. Let F be the maximal number of faces of any eclass of the cmesh's dimension, then ttf % F is the face number and ttf / F is the orientation. (t8_eclass_max_num_faces) The orientation is determined as follows. Let my_face and other_face be the two face numbers of the connecting trees. We chose a main_face from them as follows: Either both trees have the same element class, then the face with the lower face number is the main_face or the trees belong to different classes in which case the face belonging to the tree with the lower class according to the ordering triangle < square, hex < tet < prism < pyramid, is the main_face. Then face corner 0 of the main_face connects to a face corner k in the other face. The face orientation is defined as the number k. If the classes are equal and my_face == other_face, treating either of both faces as the main_face leads to the same result. See https://arxiv.org/pdf/1611.02929.pdf for more details.

The documentation for this struct was generated from the following file:

src/t8_cmesh/t8_cmesh_types.h

Data Fields

Detailed Description