p4est
1.0
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Iteration over mesh topology via callbacks. More...
Go to the source code of this file.
Data Structures | |
struct | p4est_iter_volume_info_t |
The information that is available to the user-defined p4est_iter_volume_t callback function. More... | |
struct | p4est_iter_face_side_t |
Information about one side of a face in the forest. More... | |
union | p4est_iter_face_side_t::p4est_iter_face_side_data |
struct | p4est_iter_face_info_t |
The information that is available to the user-defined p4est_iter_face_t callback. More... | |
struct | p4est_iter_corner_side_t |
Information about one side of a corner in the forest. More... | |
struct | p4est_iter_corner_info_t |
The information that is availalbe to the user-defined p4est_iter_corner_t callback. More... | |
Typedefs | |
typedef void(* | p4est_iter_volume_t )(p4est_iter_volume_info_t *info, void *user_data) |
The prototype for a function that p4est_iterate will execute at every quadrant local to the current process. | |
typedef void(* | p4est_iter_face_t )(p4est_iter_face_info_t *info, void *user_data) |
The prototype for a function that p4est_iterate will execute wherever two quadrants share a face: the face can be a 2:1 hanging face, it does not have to be conformal. | |
typedef void(* | p4est_iter_corner_t )(p4est_iter_corner_info_t *info, void *user_data) |
The prototype for a function that p4est_iterate will execute wherever quadrants meet at a conformal corner. | |
Functions | |
void | p4est_iterate (p4est_t *p4est, p4est_ghost_t *ghost_layer, void *user_data, p4est_iter_volume_t iter_volume, p4est_iter_face_t iter_face, p4est_iter_corner_t iter_corner) |
Execute user supplied callbacks at every volume, face, and corner in the local forest. | |
static p4est_iter_corner_side_t * | p4est_iter_cside_array_index_int (sc_array_t *array, int it) |
Return a pointer to a iter_corner_side array element indexed by a int. | |
static p4est_iter_corner_side_t * | p4est_iter_cside_array_index (sc_array_t *array, size_t it) |
Return a pointer to a iter_corner_side array element indexed by a size_t. | |
static p4est_iter_face_side_t * | p4est_iter_fside_array_index_int (sc_array_t *array, int it) |
Return a pointer to a iter_face_side array element indexed by a int. | |
static p4est_iter_face_side_t * | p4est_iter_fside_array_index (sc_array_t *array, size_t it) |
Return a pointer to a iter_face_side array element indexed by a size_t. |
Iteration over mesh topology via callbacks.
typedef void(* p4est_iter_corner_t)(p4est_iter_corner_info_t *info, void *user_data) |
The prototype for a function that p4est_iterate will execute wherever quadrants meet at a conformal corner.
i.e. the callback will not execute on a hanging corner.
[in] | info | information about a quadrant provided to the user |
[in,out] | user_data | the user context passed to p4est_iterate() |
typedef void(* p4est_iter_face_t)(p4est_iter_face_info_t *info, void *user_data) |
The prototype for a function that p4est_iterate will execute wherever two quadrants share a face: the face can be a 2:1 hanging face, it does not have to be conformal.
[in] | info | information about a quadrant provided to the user |
[in,out] | user_data | the user context passed to p4est_iterate() |
typedef void(* p4est_iter_volume_t)(p4est_iter_volume_info_t *info, void *user_data) |
The prototype for a function that p4est_iterate will execute at every quadrant local to the current process.
[in] | info | information about a quadrant provided to the user |
[in,out] | user_data | the user context passed to p4est_iterate() |
void p4est_iterate | ( | p4est_t * | p4est, |
p4est_ghost_t * | ghost_layer, | ||
void * | user_data, | ||
p4est_iter_volume_t | iter_volume, | ||
p4est_iter_face_t | iter_face, | ||
p4est_iter_corner_t | iter_corner | ||
) |
Execute user supplied callbacks at every volume, face, and corner in the local forest.
p4est_iterate executes the user-supplied callback functions at every volume, face, and corner in the local forest. The ghost_layer may be NULL. The user_data pointer is not touched by p4est_iterate, but is passed to each of the callbacks. Any of the callbacks may be NULL. The callback functions are interspersed with each other, i.e. some face callbacks will occur between volume callbacks, and some corner callbacks will occur between face callbacks:
1) volume callbacks occur in the sorted Morton-index order. 2) a face callback is not executed until after the volume callbacks have been executed for the quadrants that share it. 3) a corner callback is not executed until the face callbacks have been executed for all faces that touch the corner. 4) it is not always the case that every face callback for a given quadrant is executed before any of the corner callbacks. 5) callbacks are not executed at faces or corners that only involve ghost quadrants, i.e. that are not adjacent in the local section of the forest.
[in] | p4est | the forest |
[in] | ghost_layer | optional: when not given, callbacks at the boundaries of the local partition cannot provide quadrant data about ghost quadrants: missing (p4est_quadrant_t *) pointers are set to NULL, missing indices are set to -1. |
[in,out] | user_data | optional context to supply to each callback |
[in] | iter_volume | callback function for every quadrant's interior |
[in] | iter_face | callback function for every face between quadrants |
[in] | iter_corner | callback function for every corner between quadrants |