GetFEM  5.4.2
getfem::mesh_fem_global_function Class Reference

this is a convenience class for defining a mesh_fem with base functions which are global functions (functions defined across more than one convexes of a mesh) given by the user. More...

#include <getfem_mesh_fem_global_function.h>

Inherits getfem::mesh_fem.

Additional Inherited Members

- Public Member Functions inherited from getfem::mesh_fem
void update_from_context () const
 this function has to be defined and should update the object when the context is modified.
 
const dal::bit_vector & convex_index () const
 Get the set of convexes where a finite element has been assigned.
 
bool is_reduced () const
 Return true if a reduction matrix is applied to the dofs.
 
const REDUCTION_MATRIX & reduction_matrix () const
 Return the reduction matrix applied to the dofs.
 
const EXTENSION_MATRIX & extension_matrix () const
 Return the extension matrix corresponding to reduction applied (RE=I).
 
template<typename MATR , typename MATE >
void set_reduction_matrices (const MATR &RR, const MATE &EE)
 Allows to set the reduction and the extension matrices. More...
 
void reduce_to_basic_dof (const dal::bit_vector &kept_basic_dof)
 Allows to set the reduction and the extension matrices in order to keep only a certain number of dof.
 
void set_reduction (bool r)
 Validate or invalidate the reduction (keeping the reduction matrices).
 
const meshlinked_mesh () const
 Return a reference to the underlying mesh.
 
void set_auto_add (dim_type K, bool disc=false, scalar_type alpha=scalar_type(0), bool complete=false)
 Set the degree of the fem for automatic addition of element option. More...
 
void set_auto_add (pfem pf)
 Set the fem for automatic addition of element option. More...
 
virtual dim_type get_qdim () const
 Return the Q dimension. More...
 
virtual void set_qdim (dim_type q)
 Change the Q dimension.
 
virtual void set_qdim (dim_type M, dim_type N)
 Set the dimension for a matrix field.
 
virtual void set_qdim (dim_type M, dim_type N, dim_type O, dim_type P)
 Set the dimension for a fourth order tensor field.
 
virtual void set_qdim (const bgeot::multi_index &mii)
 Set the dimension for an arbitrary order tensor field.
 
dim_type get_qdim_m () const IS_DEPRECATED
 for matrix fields, return the number of rows.
 
dim_type get_qdim_n () const IS_DEPRECATED
 for matrix fields, return the number of columns.
 
void set_finite_element (size_type cv, pfem pf)
 Set the finite element method of a convex. More...
 
void set_finite_element (const dal::bit_vector &cvs, pfem pf)
 Set the finite element on a set of convexes. More...
 
void set_finite_element (pfem pf)
 shortcut for set_finite_element(linked_mesh().convex_index(),pf); and set_auto_add(pf).
 
void set_classical_finite_element (size_type cv, dim_type fem_degree, bool complete=false)
 Set a classical (i.e. More...
 
void set_classical_finite_element (const dal::bit_vector &cvs, dim_type fem_degree, bool complete=false)
 Set a classical (i.e. More...
 
void set_classical_discontinuous_finite_element (size_type cv, dim_type fem_degree, scalar_type alpha=0, bool complete=false)
 Similar to set_classical_finite_element, but uses discontinuous lagrange elements. More...
 
void set_classical_discontinuous_finite_element (const dal::bit_vector &cvs, dim_type fem_degree, scalar_type alpha=0, bool complete=false)
 Similar to set_classical_finite_element, but uses discontinuous lagrange elements. More...
 
void set_classical_finite_element (dim_type fem_degree, bool complete=false)
 Shortcut for set_classical_finite_element(linked_mesh().convex_index(),...)
 
void set_classical_discontinuous_finite_element (dim_type fem_degree, scalar_type alpha=0, bool complete=false)
 Shortcut for set_classical_discontinuous_finite_element(linked_mesh().convex_index() ,...)
 
virtual pfem fem_of_element (size_type cv) const
 Return the basic fem associated with an element (if no fem is associated, the function will crash! use the convex_index() of the mesh_fem to check that a fem is associated to a given convex). More...
 
virtual ind_dof_ct ind_basic_dof_of_element (size_type cv) const
 Give an array of the dof numbers a of convex. More...
 
virtual ind_dof_face_ct ind_basic_dof_of_face_of_element (size_type cv, short_type f) const
 Give an array of the dof numbers lying of a convex face (all degrees of freedom whose associated base function is non-zero on the convex face). More...
 
virtual size_type nb_basic_dof_of_face_of_element (size_type cv, short_type f) const
 Return the number of dof lying on the given convex face. More...
 
virtual size_type nb_basic_dof_of_element (size_type cv) const
 Return the number of degrees of freedom attached to a given convex. More...
 
virtual base_node point_of_basic_dof (size_type cv, size_type i) const
 Return the geometrical location of a degree of freedom. More...
 
virtual base_node point_of_basic_dof (size_type d) const
 Return the geometrical location of a degree of freedom. More...
 
virtual dim_type basic_dof_qdim (size_type d) const
 Return the dof component number (0<= x <Qdim)
 
virtual size_type first_convex_of_basic_dof (size_type d) const
 Shortcut for convex_to_dof(d)[0]. More...
 
virtual const mesh::ind_cv_ct & convex_to_basic_dof (size_type d) const
 Return the list of convexes attached to the specified dof. More...
 
virtual void get_global_dof_index (std::vector< size_type > &ind) const
 Give an array that contains the global dof indices corresponding to the mesh_fem dofs or size_type(-1) if a dof is not global. More...
 
virtual void enumerate_dof () const
 Renumber the degrees of freedom. More...
 
virtual size_type nb_basic_dof () const
 Return the total number of basic degrees of freedom (before the optional reduction).
 
virtual size_type nb_dof () const
 Return the total number of degrees of freedom.
 
virtual dal::bit_vector basic_dof_on_region (const mesh_region &b) const
 Get a list of basic dof lying on a given mesh_region. More...
 
dal::bit_vector dof_on_region (const mesh_region &b) const
 Get a list of dof lying on a given mesh_region. More...
 
 mesh_fem (const mesh &me, dim_type Q=1)
 Build a new mesh_fem. More...
 
virtual void read_from_file (std::istream &ist)
 Read the mesh_fem from a stream. More...
 
void read_from_file (const std::string &name)
 Read the mesh_fem from a file. More...
 
virtual void write_to_file (std::ostream &ost) const
 Write the mesh_fem to a stream.
 
void write_to_file (const std::string &name, bool with_mesh=false) const
 Write the mesh_fem to a file. More...
 
- Public Member Functions inherited from getfem::context_dependencies
bool context_check () const
 return true if update_from_context was called
 

Detailed Description

this is a convenience class for defining a mesh_fem with base functions which are global functions (functions defined across more than one convexes of a mesh) given by the user.

Definition at line 50 of file getfem_mesh_fem_global_function.h.


The documentation for this class was generated from the following files: