petsc-3.10.4 2019-02-26
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DMPlexCreateBoxMesh

Creates a mesh on the tensor product of unit intervals (box) using simplices or tensor cells (hexahedra).

Synopsis

#include "petscdmplex.h"   
#include "petscdmplex.h"   
PetscErrorCode DMPlexCreateBoxMesh(MPI_Comm comm, PetscInt dim, PetscBool simplex, const PetscInt faces[], const PetscReal lower[], const PetscReal upper[], const DMBoundaryType periodicity[], PetscBool interpolate, DM *dm)
Collective on MPI_Comm

Input Parameters

comm - The communicator for the DM object
dim - The spatial dimension
simplex - PETSC_TRUE for simplices, PETSC_FALSE for tensor cells
faces - Number of faces per dimension, or NULL for (1,) in 1D and (2, 2) in 2D and (1, 1, 1) in 3D
lower - The lower left corner, or NULL for (0, 0, 0)
upper - The upper right corner, or NULL for (1, 1, 1)
periodicity - The boundary type for the X,Y,Z direction, or NULL for DM_BOUNDARY_NONE
interpolate - Flag to create intermediate mesh pieces (edges, faces)

Output Parameter

dm -The DM object

Note: Here is the numbering returned for 2 faces in each direction for tensor cells

10---17---11---18----12
 |         |         |
 |         |         |
20    2   22    3    24
 |         |         |
 |         |         |
 7---15----8---16----9
 |         |         |
 |         |         |
19    0   21    1   23
 |         |         |
 |         |         |
 4---13----5---14----6

and for simplicial cells

14----8---15----9----16
 |\     5  |\      7 |
 | \       | \       |
13   2    14    3    15
 | 4   \   | 6   \   |
 |       \ |       \ |
11----6---12----7----13
 |\        |\        |
 | \    1  | \     3 |
10   0    11    1    12
 | 0   \   | 2   \   |
 |       \ |       \ |
 8----4----9----5----10

Keywords

DM, create

See Also

DMPlexCreateFromFile(), DMPlexCreateHexCylinderMesh(), DMSetType(), DMCreate()

Level

beginner

Location

src/dm/impls/plex/plexcreate.c

Examples

src/dm/impls/plex/examples/tutorials/ex1.c.html
src/dm/impls/plex/examples/tutorials/ex2.c.html
src/dm/impls/plex/examples/tutorials/ex1f90.F90.html
src/dm/examples/tutorials/ex20.c.html
src/dm/field/examples/tutorials/ex1.c.html
src/snes/examples/tutorials/ex12.c.html
src/snes/examples/tutorials/ex56.c.html
src/snes/examples/tutorials/ex62.c.html
src/snes/examples/tutorials/ex77.c.html
src/ts/examples/tutorials/ex11.c.html
src/ts/examples/tutorials/ex48.c.html

Implementations

DMPlexCreateBoxMesh_Simplex_Internal in src/dm/impls/plex/plexcreate.c
DMPlexCreateBoxMesh_Tensor_Internal in src/dm/impls/plex/plexcreate.c

Index of all DMPLEX routines
Table of Contents for all manual pages
Index of all manual pages