Mesh Oriented datABase
(version 5.5.1)
An array-based unstructured mesh library
SetIterator.hpp
Go to the documentation of this file.
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#ifndef MB_SETITERATOR_HPP
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#define MB_SETITERATOR_HPP
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#include "
moab/Interface.hpp
"
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namespace
moab
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{
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class
Core;
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/** \class Meshset iterator
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* \brief A class to iterator over MOAB Meshsets
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*/
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class
SetIterator
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{
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public
:
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friend
class
Core
;
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//! destructor
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virtual
~SetIterator
();
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//! get the ent set for this iterator
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inline
EntityHandle
ent_set
()
const
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{
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return
entSet
;
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};
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//! get the chunk size of this iterator
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inline
unsigned
int
chunk_size
()
const
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{
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return
chunkSize
;
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};
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//! get the entity type for this iterator
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inline
EntityType
ent_type
()
const
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{
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return
entType
;
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};
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//! get the dimension for this iterator
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inline
int
ent_dimension
()
const
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{
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return
entDimension
;
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};
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/** \brief get the next chunkSize entities
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* Return the next chunkSize entities.
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* \param arr Array of entities returned.
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* \param atend Returns true if iterator is at the end of iterable values, otherwise false
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*/
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virtual
ErrorCode
get_next_arr
( std::vector< EntityHandle >& arr,
bool
& atend ) = 0;
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//! reset the iterator to the beginning of the set
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virtual
ErrorCode
reset
() = 0;
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protected
:
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/** \brief Constructor
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* \param core MOAB Core instance
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* \param ent_set EntitySet to which this iterator corresponds
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* \param chunk_size Chunk size of this iterator
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* \param ent_type Entity type for this iterator
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* \param ent_dim Entity dimension for this iterator
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*/
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inline
SetIterator
(
Core
* core,
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EntityHandle
eset,
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unsigned
int
chunk_sz,
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EntityType ent_tp,
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int
ent_dim,
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bool
check_valid =
false
)
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:
myCore
( core ),
entSet
( eset ),
chunkSize
( chunk_sz ),
entType
( ent_tp ),
entDimension
( ent_dim ),
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checkValid
( check_valid ){};
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//! Core instance
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Core
*
myCore
;
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//! handle for entity set corresponding to this iterator
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EntityHandle
entSet
;
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//! chunk size of this iterator
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unsigned
int
chunkSize
;
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//! entity type this iterator iterates over
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EntityType
entType
;
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//! dimension this iterator iterates over
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int
entDimension
;
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//! check for entity validity before returning handles
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bool
checkValid
;
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};
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/** \class Set-type set iterator
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* \brief A class to iterator over MOAB set-type meshsets
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*/
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class
RangeSetIterator
:
public
SetIterator
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{
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public
:
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friend
class
Core
;
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/** \brief Destructor
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*/
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virtual
~RangeSetIterator
();
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/** \brief get the next chunkSize entities
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* Return the next chunkSize entities.
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* \param arr Array of entities returned.
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* \param atend Returns true if iterator is at the end of iterable values, otherwise false
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*/
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virtual
ErrorCode
get_next_arr
( std::vector< EntityHandle >& arr,
bool
& atend );
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//! reset the iterator to the beginning of the set
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virtual
ErrorCode
reset
();
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protected
:
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/** \brief Constructor
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* \param core MOAB Core instance
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* \param ent_set EntitySet to which this iterator corresponds
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* \param chunk_size Chunk size of this iterator
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* \param ent_type Entity type for this iterator
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* \param ent_dim Entity dimension for this iterator
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*/
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RangeSetIterator
(
Core
* core,
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EntityHandle
ent_set
,
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int
chunk_size
,
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EntityType
ent_type
,
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int
ent_dimension
,
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bool
check_valid =
false
);
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private
:
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ErrorCode
get_next_by_type
(
const
EntityHandle
*& ptr,
int
count, std::vector< EntityHandle >& arr,
bool
& atend );
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ErrorCode
get_next_by_dimension
(
const
EntityHandle
*& ptr,
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int
count,
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std::vector< EntityHandle >& arr,
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bool
& atend );
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//! Build the special pair vector for the root set
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ErrorCode
build_pair_vec
();
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//! Current iterator position, 0 if at beginning
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EntityHandle
iterPos
;
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//! Special range pair ptr for root set
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EntityHandle
*
pairPtr
;
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//! Number of range pairs
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int
numPairs
;
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};
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/** \class List-type set iterator
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* \brief A class to iterator over MOAB list-type meshsets
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*/
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class
VectorSetIterator
:
public
SetIterator
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{
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public
:
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friend
class
Core
;
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/** \brief get the next chunkSize entities
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* Return the next chunkSize entities.
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* \param arr Array of entities returned.
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* \param atend Returns true if iterator is at the end of iterable values, otherwise false
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*/
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virtual
ErrorCode
get_next_arr
( std::vector< EntityHandle >& arr,
bool
& atend );
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//! reset the iterator to the beginning of the set
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virtual
ErrorCode
reset
();
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//! decrement the position by the specified number; returns MB_FAILURE if resulting index is < 0
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inline
ErrorCode
decrement
(
int
num );
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protected
:
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/** \brief Constructor
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* \param core MOAB Core instance
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* \param ent_set EntitySet to which this iterator corresponds
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* \param chunk_size Chunk size of this iterator
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* \param ent_type Entity type for this iterator
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* \param ent_dim Entity dimension for this iterator
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*/
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inline
VectorSetIterator
(
Core
* core,
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EntityHandle
eset,
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int
chunk_sz,
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EntityType ent_tp,
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int
ent_dim,
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bool
check_valid =
false
)
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:
SetIterator
( core, eset, chunk_sz, ent_tp, ent_dim, check_valid ),
iterPos
( 0 )
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{
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}
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private
:
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//! Current iterator position, 0 if at beginning
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int
iterPos
;
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};
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inline
ErrorCode
VectorSetIterator::decrement
(
int
num )
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{
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iterPos
-= num;
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return
(
iterPos
< 0 ? MB_FAILURE :
MB_SUCCESS
);
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}
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}
// namespace moab
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#endif
src
moab
SetIterator.hpp
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