petsc-master 2019-09-17
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DMPlexComputeCellGeometryAffineFEM

Assuming an affine map, compute the Jacobian, inverse Jacobian, and Jacobian determinant for a given cell

Synopsis

#include "petscdmplex.h"   
#include "petscfe.h"       
PetscErrorCode DMPlexComputeCellGeometryAffineFEM(DM dm, PetscInt cell, PetscReal *v0, PetscReal *J, PetscReal *invJ, PetscReal *detJ)
Collective on dm

Input Arguments

dm - the DM
cell - the cell

Output Arguments

v0 - the translation part of this affine transform
J - the Jacobian of the transform from the reference element
invJ - the inverse of the Jacobian
detJ - the Jacobian determinant

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

DMPlexComputeCellGeometryFEM(), DMGetCoordinateSection(), DMGetCoordinates()

Level

advanced

Location

src/dm/impls/plex/plexgeometry.c
Index of all DMPLEX routines
Table of Contents for all manual pages
Index of all manual pages