petsc-3.9.4 2018-09-11
DMPlexComputeCellGeometryFEM
Compute the Jacobian, inverse Jacobian, and Jacobian determinant at each quadrature point in the given cell
Synopsis
#include "petscdmplex.h"
#include "petscfe.h"
PetscErrorCode DMPlexComputeCellGeometryFEM(DM dm, PetscInt cell, PetscQuadrature quad, PetscReal *v, PetscReal *J, PetscReal *invJ, PetscReal *detJ)
Collective on DM
Input Arguments
| dm | - the DM
|
| cell | - the cell
|
| quad | - the quadrature containing the points in the reference element where the geometry will be evaluated. If quad == NULL, geometry will be
evaluated at the first vertex of the reference element
|
Output Arguments
| v | - the image of the transformed quadrature points, otherwise the image of the first vertex in the closure of the reference element
|
| J | - the Jacobian of the transform from the reference element at each quadrature point
|
| invJ | - the inverse of the Jacobian at each quadrature point
|
| detJ | - the Jacobian determinant at each quadrature point
|
Fortran Notes
Since it returns arrays, this routine is only available in Fortran 90, and you must
include petsc.h90 in your code.
See Also
DMGetCoordinateSection(), DMGetCoordinates()
Level
advanced
Location
src/dm/impls/plex/plexgeometry.c
Examples
src/dm/impls/plex/examples/tutorials/ex2.c.html
Implementations
DMPlexComputeCellGeometryFEM_Implicit in src/dm/impls/plex/plexgeometry.c
DMPlexComputeCellGeometryFEM_FE in src/dm/impls/plex/plexgeometry.c
Index of all DMPLEX routines
Table of Contents for all manual pages
Index of all manual pages