MeshDisplacement.h

Note

The documentation on this page was automatically extracted from the DOLFIN C++ code and may need to be edited or expanded.

class MeshDisplacement

Parent class(es)

• :cpp:class:`Expression

`

This class encapsulates the CG1 representation of the displacement of a mesh as an Expression. This is particularly useful for the displacement returned by mesh smoothers which can subsequently be used in evaluating forms. The value rank is 1 and the value shape is equal to the geometric dimension of the mesh.

MeshDisplacement(const Mesh& mesh)

Create MeshDisplacement of given mesh

Arguments

mesh (Mesh)

Mesh to be displacement defined on.

MeshDisplacement(const MeshDisplacement& mesh_displacement)

Copy constructor

Arguments

mesh_displacement (MeshDisplacement)

Object to be copied.

Function& operator[](const std::size_t i)

Extract subfunction In python available as MeshDisplacement.sub(i)

Arguments

i (std::size_t)

Index of subfunction.

const Function& operator[](const std::size_t i) const

Extract subfunction. Const version

Arguments

i (std::size_t)

Index of subfunction.

void eval(Array<double>& values, const Array<double>& x, const ufc::cell& cell) const

Evaluate at given point in given cell.

Arguments

values (Array <double>)

The values at the point.

x (Array <double>)

The coordinates of the point.

cell (ufc::cell)

The cell which contains the given point.

void compute_vertex_values(std::vector<double>& vertex_values, const Mesh& mesh) const

Compute values at all mesh vertices.

Arguments

vertex_values (Array <double>)

The values at all vertices.

mesh (Mesh)

The mesh.