#include "petscdt.h"
#include "petscdmmoab.h"
PetscErrorCode DMMoabFEMComputeBasis ( const PetscInt dim, const PetscInt nverts, const PetscReal *coordinates, const PetscQuadrature quadrature,
PetscReal *phypts, PetscReal *jacobian_quadrature_weight_product,
PetscReal *fe_basis, PetscReal **fe_basis_derivatives)
The routine takes the coordinates of the vertices of an element and computes basis functions associated with
each quadrature point provided, and their derivatives with respect to X, Y and Z as appropriate.
| PetscInt nverts, the number of element vertices | - . PetscReal coords[3*nverts], the physical coordinates of the vertices (in canonical numbering) | |
| PetscInt npts, the number of evaluation points (quadrature points) | - - PetscReal quad[3*npts], the evaluation points (quadrature points) in the reference space |
| PetscReal phypts[3*npts], the evaluation points (quadrature points) transformed to the physical space | - . PetscReal jxw[npts], the jacobian determinant * quadrature weight necessary for assembling discrete contributions | |
| PetscReal fe_basis[npts], the bases values evaluated at the specified quadrature points | - - PetscReal fe_basis_derivatives[dim][npts], the derivative of the bases wrt (X,Y,Z)-directions (depending on the dimension) evaluated at the specified quadrature points |