petsc-3.8.4 2018-03-24
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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())

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