DMPlexRefineRegularGetAffineFaceTransforms#

Gets the affine map from the reference face cell to each face in the given cell

Synopsis#

#include "petscdmplextransform.h" 
PetscErrorCode DMPlexRefineRegularGetAffineFaceTransforms(DMPlexTransform tr, DMPolytopeType ct, PetscInt *Nf, PetscReal *v0[], PetscReal *J[], PetscReal *invJ[], PetscReal *detJ[])

Input Parameters#

Output Parameters#

  • Nf - The number of faces for this cell type

  • v0 - The translation of the first vertex for each face

  • J - The Jacobian for each face (map from original cell to subcell)

  • invJ - The inverse Jacobian for each face

  • detJ - The determinant of the Jacobian for each face

Note#

The Jacobian and inverse Jacobian will be rectangular, and the inverse is really a generalized inverse.

    v0 + j x_face = x_cell
    invj (x_cell - v0) = x_face

See Also#

DMPLEX, DM, DMPlexTransform, DMPolytopeType, DMPlexCellRefinerGetAffineTransforms()`

Level#

developer

Location#

src/dm/impls/plex/transform/impls/refine/regular/plexrefregular.c

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