petsc-3.11.3 2019-06-26
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DMPlexCoordinatesToReference

Pull coordinates back from the mesh to the reference element using a single element map. This inversion will be accurate inside the reference element, but may be inaccurate for mappings that do not extend uniquely outside the reference cell (e.g, most non-affine maps)

Synopsis

#include "petscdmplex.h"   
#include "petscfe.h"       
PetscErrorCode DMPlexCoordinatesToReference(DM dm, PetscInt cell, PetscInt numPoints, const PetscReal realCoords[], PetscReal refCoords[])
Not collective

Input Parameters

dm - The mesh, with coordinate maps defined either by a PetscDS for the coordinate DM (see DMGetCoordinateDM()) or implicitly by the coordinates of the corner vertices of the cell: as an affine map for simplicial elements, or as a multilinear map for tensor-product elements
cell - the cell whose map is used.
numPoints - the number of points to locate
realCoords - (numPoints x coordinate dimension) array of coordinates (see DMGetCoordinateDim())

Output Parameters

refCoords -(numPoints x dimension) array of reference coordinates (see DMGetDimension())

See Also

DMPlexReferenceToCoordinates()

Level

intermediate

Location

src/dm/impls/plex/plexgeometry.c

Implementations

DMPlexCoordinatesToReference_NewtonUpdate in src/dm/impls/plex/plexgeometry.c
DMPlexCoordinatesToReference_Tensor in src/dm/impls/plex/plexgeometry.c
DMPlexCoordinatesToReference_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