GetFEM  5.4.2
getfem_mesh_fem_sum.h
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30 ===========================================================================*/
31 /**@file getfem_mesh_fem_sum.h
32  @author Yves Renard <Yves.Renard@insa-lyon.fr>
33  @author Julien Pommier <Julien.Pommier@insa-toulouse.fr>
34  @date March 18, 2005.
35  @brief Implement a special mesh_fem with merges the FEMs of two
36  (or more) mesh_fems.
37 */
38 
39 #ifndef GETFEM_MESH_SUM_H__
40 #define GETFEM_MESH_SUM_H__
41 
42 #include "getfem_mesh_fem.h"
43 
44 namespace getfem {
45  typedef std::vector<const std::string *> dof_enrichments;
46 
47  /** @internal FEM used in mesh_fem_sum objects. */
48  class fem_sum : public virtual_fem {
49  std::vector<pfem> pfems; /* the fems to be summed */
50  bool smart_global_dof_linking_;
51  size_type cv;
52 
53  public:
54 
55  size_type index_of_global_dof(size_type cv_, size_type j) const;
56  fem_sum(const std::vector<pfem> &pfs, size_type i,
57  bool smart_global_dof_linking)
58  : pfems(pfs), smart_global_dof_linking_(smart_global_dof_linking),
59  cv(i) { init(); }
60  void init();
61  void valid();
62  void base_value(const base_node &x, base_tensor &t) const;
63  void grad_base_value(const base_node &x, base_tensor &t) const;
64  void hess_base_value(const base_node &x, base_tensor &t) const;
65 
66  void real_base_value(const fem_interpolation_context& c,
67  base_tensor &t, bool = true) const;
68  void real_grad_base_value(const fem_interpolation_context& c,
69  base_tensor &t, bool = true) const;
70  void real_hess_base_value(const fem_interpolation_context& c,
71  base_tensor &t, bool = true) const;
72  void mat_trans(base_matrix &M, const base_matrix &G,
73  bgeot::pgeometric_trans pgt) const;
74  };
75 
76 
77  /** @brief Implement a special mesh_fem with merges the FEMs of
78  two (or more) mesh_fems.
79  */
80  class mesh_fem_sum : public mesh_fem {
81  protected :
82  std::vector<const mesh_fem *> mfs;
83 
84  mutable std::map< std::vector<pfem>, pfem> situations;
85  mutable std::vector<pfem> build_methods;
86  mutable bool is_adapted;
87  bool smart_global_dof_linking_;
88  void clear_build_methods();
89 
90  public :
91  void adapt(void);
92  void update_from_context(void) const { is_adapted = false; }
93  void clear(void);
94 
95  size_type memsize() const {
96  return mesh_fem::memsize(); // + ... ;
97  }
98 
99  mesh_fem_sum(const mesh &me, bool smart_global_dof_linking = false)
100  : mesh_fem(me), smart_global_dof_linking_(smart_global_dof_linking)
101  { is_adapted = false; }
102  void set_mesh_fems(const std::vector<const mesh_fem *> &mefs)
103  { mfs = mefs; adapt(); }
104  /** enabled "smart" dof linking between the mesh_fems.
105  It was introduced for the point-wise matching part of
106  tests/crack.cc but it does not work with discontinuous global
107  functions...
108  */
110  { smart_global_dof_linking_ = b; }
111  void set_mesh_fems(const mesh_fem &mf1)
112  { mfs.clear(); mfs.push_back(&mf1); adapt(); }
113  void set_mesh_fems(const mesh_fem &mf1, const mesh_fem &mf2)
114  { mfs.clear(); mfs.push_back(&mf1); mfs.push_back(&mf2); adapt(); }
115  void set_mesh_fems(const mesh_fem &mf1, const mesh_fem &mf2,
116  const mesh_fem &mf3) {
117  mfs.clear();
118  mfs.push_back(&mf1); mfs.push_back(&mf2); mfs.push_back(&mf3);
119  adapt();
120  }
121 
122  ~mesh_fem_sum() { clear_build_methods(); }
123  };
124 
125 
126 } /* end of namespace getfem. */
127 
128 #endif
129 
getfem::mesh_fem_sum::update_from_context
void update_from_context(void) const
this function has to be defined and should update the object when the context is modified.
Definition: getfem_mesh_fem_sum.h:92
bgeot::size_type
size_t size_type
used as the common size type in the library
Definition: bgeot_poly.h:49
getfem::mesh_fem
Describe a finite element method linked to a mesh.
Definition: getfem_mesh_fem.h:148
getfem
GEneric Tool for Finite Element Methods.
Definition: getfem_accumulated_distro.h:46
getfem_mesh_fem.h
Define the getfem::mesh_fem class.
getfem::pfem
std::shared_ptr< const getfem::virtual_fem > pfem
type of pointer on a fem description
Definition: getfem_fem.h:244
getfem::mesh_fem_sum
Implement a special mesh_fem with merges the FEMs of two (or more) mesh_fems.
Definition: getfem_mesh_fem_sum.h:80
bgeot::pgeometric_trans
std::shared_ptr< const bgeot::geometric_trans > pgeometric_trans
pointer type for a geometric transformation
Definition: bgeot_geometric_trans.h:186
getfem::mesh_fem_sum::set_smart_global_dof_linking
void set_smart_global_dof_linking(bool b)
enabled "smart" dof linking between the mesh_fems.
Definition: getfem_mesh_fem_sum.h:109