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| DoFInvalidAccessor (const Triangulation< dim, spacedim > *parent=0, const int level=-1, const int index=-1, const AccessorData *local_data=0) |
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| DoFInvalidAccessor (const DoFInvalidAccessor< structdim, dim, spacedim > &) |
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template<typename OtherAccessor > |
| DoFInvalidAccessor (const OtherAccessor &) |
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types::global_dof_index | dof_index (const unsigned int i, const unsigned int fe_index=DoFHandler< dim, spacedim >::default_fe_index) const |
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void | set_dof_index (const unsigned int i, const types::global_dof_index index, const unsigned int fe_index=DoFHandler< dim, spacedim >::invalid_fe_index) const |
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void | copy_from (const InvalidAccessor &) |
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bool | operator== (const InvalidAccessor &) const |
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bool | operator!= (const InvalidAccessor &) const |
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void | operator++ () const |
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void | operator-- () const |
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bool | used () const |
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bool | has_children () const |
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types::manifold_id | manifold_id () const |
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unsigned int | user_index () const |
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void | set_user_index (const unsigned int p) const |
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void | set_manifold_id (const types::manifold_id) const |
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Point< spacedim > & | vertex (const unsigned int i) const |
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typename ::internal::TriangulationImplementation::Iterators< dim, spacedim >::line_iterator | line (const unsigned int i) const |
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typename ::internal::TriangulationImplementation::Iterators< dim, spacedim >::quad_iterator | quad (const unsigned int i) const |
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int | level () const |
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int | index () const |
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IteratorState::IteratorStates | state () const |
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const Triangulation< dim, spacedim > & | get_triangulation () const |
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template<int structdim, int dim, int spacedim = dim>
class DoFInvalidAccessor< structdim, dim, spacedim >
A class that represents DoF accessor objects to iterators that don't make sense such as quad iterators in on 1d meshes. This class can not be used to create objects (it will in fact throw an exception if this should ever be attempted but it sometimes allows code to be written in a simpler way in a dimension independent way. For example, it allows to write code that works on quad iterators that is dimension independent – i.e., also compiles in 1d – because quad iterators (via the current class) exist and are syntactically correct. You can not expect, however, to ever create an actual object of one of these iterators in 1d, meaning you need to expect to wrap the code block in which you use quad iterators into something like if (dim>1)
– which makes eminent sense anyway.
This class provides the minimal interface necessary for Accessor classes to interact with Iterator classes. However, this is only for syntactic correctness, none of the functions do anything but generate errors.
Definition at line 1245 of file dof_accessor.h.
template<int structdim, int dim, int spacedim>
Constructor. This class is used for iterators that do not make sense in a given dimension, for example quads for 1d meshes. Consequently, while the creation of such objects is syntactically valid, they make no semantic sense, and we generate an exception when such an object is actually generated.
Definition at line 46 of file dof_accessor.cc.
template<int structdim, int dim, int spacedim>
Copy constructor. This class is used for iterators that do not make sense in a given dimension, for example quads for 1d meshes. Consequently, while the creation of such objects is syntactically valid, they make no semantic sense, and we generate an exception when such an object is actually generated.
Definition at line 63 of file dof_accessor.cc.
template<int structdim, int dim, int spacedim = dim>
Copy operator. Since this is only called from iterators, do not return anything, since the iterator will return itself.
This method is protected, since it is only to be called from the iterator class.
template<int structdim, int dim, int spacedim = dim>
This operator advances the iterator to the next element.
For dim=1
only: The next element is next on this level if there are more. If the present element is the last on this level, the first on the next level is accessed.
template<int structdim, int dim, int spacedim = dim>
This operator moves the iterator to the previous element.
For dim=1
only: The previous element is previous on this level if index>0
. If the present element is the first on this level, the last on the previous level is accessed.
template<int structdim, int dim, int spacedim = dim>
Comparison operator for accessors. This operator is used when comparing iterators into objects of a triangulation, for example when putting them into a std::map
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If structure_dimension is less than dimension, we simply compare the index of such an object because faces and edges do not have levels. If structure_dimension equals dimension, we compare the level first, and the index only if levels are equal.
template<int structdim, int dim, int spacedim = dim>
Return the index of the element presently pointed to on the present level.
Within a Triangulation object, cells are uniquely identified by a pair (level, index)
where the former is the cell's refinement level and the latter is the index of the cell within this refinement level (the latter being what this function returns). Consequently, there may be multiple cells on different refinement levels but with the same index within their level. Contrary to this, if the current object corresponds to a face or edge, then the object is uniquely identified solely by its index as faces and edges do not have a refinement level.
- Note
- The indices objects returned by this function are not a contiguous set of numbers on each level: going from cell to cell, some of the indices in a level may be unused.
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If the triangulation is actually of type parallel::distributed::Triangulation then the indices are relatively only to that part of the distributed triangulation that is stored on the current processor. In other words, cells living in the partitions of the triangulation stored on different processors may have the same index even if they refer to the same cell, and the may have different indices even if they do refer to the same cell (e.g., if a cell is owned by one processor but is a ghost cell on another).
template<int structdim, int dim, int spacedim = dim>
Dimension of the space the object represented by this accessor lives in. For example, if this accessor represents a quad that is part of a two- dimensional surface in four-dimensional space, then this value is four.
Definition at line 309 of file tria_accessor.h.
template<int structdim, int dim, int spacedim = dim>
Dimensionality of the object that the thing represented by this accessor is part of. For example, if this accessor represents a line that is part of a hexahedron, then this value will be three.
Definition at line 316 of file tria_accessor.h.
template<int structdim, int dim, int spacedim = dim>
const unsigned int TriaAccessorBase< structdim, dim, spacedim >::structure_dimension = structdim |
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staticinherited |
Dimensionality of the current object represented by this accessor. For example, if it is line (irrespective of whether it is part of a quad or hex, and what dimension we are in), then this value equals 1.
Definition at line 323 of file tria_accessor.h.