MultiMeshFunction

class dolfin.cpp.function.MultiMeshFunction(*args)

Bases: dolfin.cpp.common.Variable

This class represents a function on a cut and composite finite element function space (MultiMesh ) defined on one or more possibly intersecting meshes.

Create MultiMesh function on given MultiMesh function space with a given vector (shared data) Warning: This constructor is intended for internal library use only Arguments V (MultiMeshFunctionSpace ) The multimesh function space. x (GenericVector ) The vector.

Parameters:
  • const MultiMeshFunctionSpace > V (std::shared_ptr<) –
  • GenericVector > x (std::shared_ptr<) –
assign_part()

Assign Function to part of a mesh Arguments a (int) Part mesh assigned to V (Function ) The vector

Parameters:
  • a (std::size_t) –
  • Function & v (const) –
Return type:

void
copy(deepcopy=False)

Return a copy of itself

Arguments
deepcopy (bool)
If false (default) the dof vector is shared.
Returns
_MultiMeshFunction_
The MultiMeshFunction
eval()

Evaluate at given point in given cell in given part 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.

Parameters:
  • double > & values (Array<) –
  • Array< double > & x (const) –
  • part (std::size_t) –
  • ufc::cell & cell (const) –
Return type:

void
function_space()

Return shared pointer to multi mesh function space Returns:cpp:any:MultiMeshFunctionSpace Return the shared pointer.

Return type:std::shared_ptr< const MultiMeshFunctionSpace >
part()

Return function (part) number i Returns:cpp:any:Function Function (part) number i

Parameters:i (std::size_t) –
Return type:std::shared_ptr< const Function >
restrict()

Restrict function to local cell in given part (compute expansion coefficients w) Arguments w (list of doubles) Expansion coefficients. element (FiniteElement ) The element. part (std::size_t) The mesh part dolfin_cell (Cell ) The cell. ufc_cell (ufc::cell). The ufc::cell.

Parameters:
  • * w (double) –
  • FiniteElement & element (const) –
  • part (std::size_t) –
  • Cell & dolfin_cell (const) –
  • double * coordinate_dofs (const) –
  • ufc::cell & ufc_cell (const) –
Return type:

void
restrict_as_ufc_function()

Restrict as UFC function (by calling eval)

Parameters:
  • * w (double) –
  • FiniteElement & element (const) –
  • part (std::size_t) –
  • Cell & dolfin_cell (const) –
  • double * coordinate_dofs (const) –
  • ufc::cell & ufc_cell (const) –
Return type:

void
thisown

The membership flag

vector()

Return vector of expansion coefficients (non-const version) Returns:cpp:any:GenericVector The vector of expansion coefficients.

Return type:std::shared_ptr< GenericVector >