ffcx.element_interface

Finite element interface.

Functions

basix_index(indices)	Get the Basix index of a derivative.
create_quadrature(cellname, degree, rule, ...)	Create a quadrature rule.
map_edge_points(points, edge, cellname)	Map points from a reference edge to a physical edge.
map_facet_points(points, facet, cellname)	Map points from a reference facet to a physical facet.
reference_cell_vertices(cellname)	Get the vertices of a reference cell.

ffcx.element_interface.basix_index(indices: tuple[int]) → int

Get the Basix index of a derivative.

ffcx.element_interface.create_quadrature(cellname: str, degree: int, rule: str, elements: list[_ElementBase]) → tuple[Buffer | _SupportsArray[dtype[Any]] | _NestedSequence[_SupportsArray[dtype[Any]]] | complex | bytes | str | _NestedSequence[complex | bytes | str], Buffer | _SupportsArray[dtype[Any]] | _NestedSequence[_SupportsArray[dtype[Any]]] | complex | bytes | str | _NestedSequence[complex | bytes | str]]

Create a quadrature rule.

ffcx.element_interface.map_edge_points(points: ndarray[tuple[Any, ...], dtype[float64]], edge: int, cellname: str) → ndarray[tuple[Any, ...], dtype[float64]]

Map points from a reference edge to a physical edge.

ffcx.element_interface.map_facet_points(points: ndarray[tuple[Any, ...], dtype[float64]], facet: int, cellname: str) → ndarray[tuple[Any, ...], dtype[float64]]

Map points from a reference facet to a physical facet.

ffcx.element_interface.reference_cell_vertices(cellname: str) → ndarray[tuple[Any, ...], dtype[float64]]

Get the vertices of a reference cell.