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MOAB: Mesh Oriented datABase
(version 5.4.1)
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MOAB: Mesh Oriented datABase
(version 5.4.1)
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#include <bvh_tree.hpp>
Public Types | |
| typedef _Entity_handles | Entity_handles |
| typedef _Box | Box |
| typedef _Moab | Moab |
| typedef _Parametrizer | Parametrizer |
| typedef Entity_handles::value_type | Entity_handle |
Public Member Functions | |
| Bvh_tree (Entity_handles &_entities, Moab &_moab, Box &_bounding_box, Parametrizer &_entity_contains) | |
| Bvh_tree (Self &s) | |
| template<typename Box > | |
| std::size_t | bucket_index (const Box &box, const Box &interval, const std::size_t dim) const |
| template<typename Iterator , typename Bounding_box , typename Buckets > | |
| void | establish_buckets (const Iterator begin, const Iterator end, const Bounding_box &interval, Buckets &buckets) const |
| template<typename Box , typename Iterator > | |
| std::size_t | set_interval (Box &interval, const Iterator begin, const Iterator end) const |
| template<typename Splits , typename Buckets , typename Split_data > | |
| void | initialize_splits (Splits &splits, const Buckets &buckets, const Split_data &data) const |
| template<typename Iterator , typename Split_data > | |
| void | order_elements (const Iterator &begin, const Iterator &end, const Split_data &data) const |
| template<typename Iterator , typename Split_data > | |
| void | median_order (const Iterator &begin, const Iterator &end, Split_data &data) const |
| template<typename Splits , typename Split_data > | |
| void | choose_best_split (const Splits &splits, Split_data &data) const |
| template<typename Iterator , typename Split_data > | |
| void | find_split (const Iterator &begin, const Iterator &end, Split_data &data) const |
| template<typename Vector , typename Result > | |
| Result & | find (const Vector &point, const double tol, Result &result) const |
| template<typename Vector > | |
| Entity_handle | bruteforce_find (const Vector &point, const double tol) const |
Private Types | |
| typedef Bvh_tree < _Entity_handles, _Box, _Moab, _Parametrizer > | Self |
| typedef std::pair< Box, Entity_handle > | Leaf_element |
| typedef _bvh::_Node< Box, Entity_handle > | Node |
| typedef std::vector< Node > | Nodes |
Private Member Functions | |
| template<typename Iterator > | |
| int | build_tree (const Iterator begin, const Iterator end, const int index, const Box &box, const int depth=0) |
| template<typename Vector , typename Node_index , typename Result > | |
| Result & | _find_point (const Vector &point, const Node_index &index, const double tol, Result &result) const |
Private Attributes | |
| const Entity_handles & | entity_handles_ |
| Nodes | tree_ |
| Moab & | moab |
| Box | bounding_box |
| Parametrizer & | entity_contains |
Definition at line 152 of file bvh_tree.hpp.
| typedef _Box moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::Box |
Definition at line 157 of file bvh_tree.hpp.
| typedef Entity_handles::value_type moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::Entity_handle |
Definition at line 160 of file bvh_tree.hpp.
| typedef _Entity_handles moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::Entity_handles |
Definition at line 156 of file bvh_tree.hpp.
typedef std::pair< Box, Entity_handle > moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::Leaf_element [private] |
Definition at line 165 of file bvh_tree.hpp.
| typedef _Moab moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::Moab |
Definition at line 158 of file bvh_tree.hpp.
typedef _bvh::_Node< Box, Entity_handle > moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::Node [private] |
Definition at line 166 of file bvh_tree.hpp.
typedef std::vector< Node > moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::Nodes [private] |
Definition at line 167 of file bvh_tree.hpp.
| typedef _Parametrizer moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::Parametrizer |
Definition at line 159 of file bvh_tree.hpp.
typedef Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer > moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::Self [private] |
Definition at line 164 of file bvh_tree.hpp.
| moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::Bvh_tree | ( | Entity_handles & | _entities, |
| Moab & | _moab, | ||
| Box & | _bounding_box, | ||
| Parametrizer & | _entity_contains | ||
| ) | [inline] |
Definition at line 171 of file bvh_tree.hpp.
References moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::bounding_box, moab::common_tree::box_contains_box(), moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::build_tree(), moab::common_tree::construct_element_map(), moab::common_tree::construct_ordering(), moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::entity_handles_, moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::moab, and moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::tree_.
: entity_handles_( _entities ), tree_(), moab( _moab ), bounding_box( _bounding_box ), entity_contains( _entity_contains ) { typedef typename Entity_handles::iterator Entity_handle_iterator; typedef ct::_Element_data< const _Box, double > Element_data; typedef typename std::tr1::unordered_map< Entity_handle, Element_data > Entity_map; typedef typename Entity_map::iterator Entity_map_iterator; typedef std::vector< Entity_map_iterator > Vector; // a fully balanced tree will have 2*_entities.size() // which is one doubling away.. tree_.reserve( entity_handles_.size() ); Entity_map entity_map( entity_handles_.size() ); ct::construct_element_map( entity_handles_, entity_map, bounding_box, moab ); #ifdef BVH_TREE_DEBUG for( Entity_map_iterator i = entity_map.begin(); i != entity_map.end(); ++i ) { if( !box_contains_box( bounding_box, i->second.first, 0 ) ) { std::cerr << "BB:" << bounding_box << "EB:" << i->second.first << std::endl; std::exit( -1 ); } } #endif //_bounding_box = bounding_box; Vector entity_ordering; construct_ordering( entity_map, entity_ordering ); // We only build nonempty trees if( entity_ordering.size() ) { // initially all bits are set tree_.push_back( Node() ); const int depth = build_tree( entity_ordering.begin(), entity_ordering.end(), 0, bounding_box ); #ifdef BVH_TREE_DEBUG typedef typename Nodes::iterator Node_iterator; typedef typename Node::Entities::iterator Entity_iterator; std::set< Entity_handle > entity_handles; for( Node_iterator i = tree_.begin(); i != tree_.end(); ++i ) { for( Entity_iterator j = i->entities.begin(); j != i->entities.end(); ++j ) { entity_handles.insert( j->second ); } } if( entity_handles.size() != entity_handles_.size() ) { std::cout << "Entity Handle Size Mismatch!" << std::endl; } typedef typename Entity_handles::iterator Entity_iterator_; for( Entity_iterator_ i = entity_handles_.begin(); i != entity_handles_.end(); ++i ) { if( entity_handles.find( *i ) == entity_handles.end() ) { std::cout << "Tree is missing an entity! " << std::endl; } } #endif std::cout << "max tree depth: " << depth << std::endl; } }
| moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::Bvh_tree | ( | Self & | s | ) | [inline] |
Definition at line 234 of file bvh_tree.hpp.
: entity_handles_( s.entity_handles_ ), tree_( s.tree_ ), moab( s.moab ), bounding_box( s.bounding_box ), entity_contains( s.entity_contains ) { }
| Result& moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::_find_point | ( | const Vector & | point, |
| const Node_index & | index, | ||
| const double | tol, | ||
| Result & | result | ||
| ) | const [inline, private] |
Definition at line 679 of file bvh_tree.hpp.
References moab::common_tree::box_contains_point(), moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::entity_contains, moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::moab, and moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::tree_.
Referenced by moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::find().
{
typedef typename Node::Entities::const_iterator Entity_iterator;
const Node& node = tree_[index];
if( node.dim == 3 )
{
for( Entity_iterator i = node.entities.begin(); i != node.entities.end(); ++i )
{
if( ct::box_contains_point( i->first, point, tol ) )
{
const std::pair< bool, Vector > r = entity_contains( moab, i->second, point );
if( r.first )
{
return result = std::make_pair( i->second, r.second );
}
}
}
result = Result( 0, point );
return result;
}
// the extra tol here considers the case where
// 0 < Rmin - Lmax < 2tol
if( ( node.Lmax + tol ) < ( node.Rmin - tol ) )
{
if( point[node.dim] <= ( node.Lmax + tol ) )
{
return _find_point( point, node.child, tol, result );
}
else if( point[node.dim] >= ( node.Rmin - tol ) )
{
return _find_point( point, node.child + 1, tol, result );
}
result = Result( 0, point );
return result; // point lies in empty space.
}
// Boxes overlap
// left of Rmin, you must be on the left
// we can't be sure about the boundaries since the boxes overlap
// this was a typo in the paper which caused pain.
if( point[node.dim] < ( node.Rmin - tol ) )
{
return _find_point( point, node.child, tol, result );
// if you are on the right Lmax, you must be on the right
}
else if( point[node.dim] > ( node.Lmax + tol ) )
{
return _find_point( point, node.child + 1, tol, result );
}
/* pg5 of paper
* However, instead of always traversing either subtree
* first (e.g. left always before right), we first traverse
* the subtree whose bounding plane has the larger distance to the
* sought point. This results in less overall traversal, and the correct
* cell is identified more quickly.
*/
// Sofar all testing confirms that this 'heuristic' is
// significantly slower.
// I conjecture this is because it gets improperly
// branch predicted..
// bool dir = (point[ node.dim] - node.Rmin) <=
// (node.Lmax - point[ node.dim]);
bool dir = false;
_find_point( point, node.child + dir, tol, result );
if( result.first == 0 )
{
return _find_point( point, node.child + ( !dir ), tol, result );
}
return result;
}
| Entity_handle moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::bruteforce_find | ( | const Vector & | point, |
| const double | tol | ||
| ) | const [inline] |
Definition at line 761 of file bvh_tree.hpp.
References moab::common_tree::box_contains_point(), moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::entity_contains, moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::moab, and moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::tree_.
{
typedef typename Vector::const_iterator Point_iterator;
typedef typename Nodes::value_type Node;
typedef typename Nodes::const_iterator Node_iterator;
typedef typename Node::Entities::const_iterator Entity_iterator;
for( Node_iterator i = tree_.begin(); i != tree_.end(); ++i )
{
if( i->dim == 3 )
{
for( Entity_iterator j = i->entities.begin(); j != i->entities.end(); ++j )
{
if( ct::box_contains_point( j->first, point, tol ) )
{
const std::pair< bool, Vector > result = entity_contains( moab, j->second, point );
if( result.first )
{
return j->second;
}
}
}
}
}
return 0;
}
| std::size_t moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::bucket_index | ( | const Box & | box, |
| const Box & | interval, | ||
| const std::size_t | dim | ||
| ) | const [inline] |
Definition at line 247 of file bvh_tree.hpp.
References center(), dim, length(), and NUM_BUCKETS.
Referenced by moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::establish_buckets(), and moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::order_elements().
{
const double min = interval.min[dim];
const double length = ( interval.max[dim] - min ) / NUM_BUCKETS;
const double center = ( ( box.max[dim] + box.min[dim] ) / 2.0 ) - min;
#ifdef BVH_TREE_DEBUG
#ifdef BVH_SHOW_INDEX
std::cout << "[ " << min << " , " << interval.max[dim] << " ]" << std::endl;
std::cout << "[ " << box.min[dim] << " , " << box.max[dim] << " ]" << std::endl;
std::cout << "Length of bucket" << length << std::endl;
std::cout << "Center: " << ( box.max[dim] + box.min[dim] ) / 2.0 << std::endl;
std::cout << "Distance of center from min: " << center << std::endl;
std::cout << "ratio: " << center / length << std::endl;
std::cout << "index: " << std::ceil( center / length ) - 1 << std::endl;
#endif
#endif
return std::ceil( center / length ) - 1;
}
| int moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::build_tree | ( | const Iterator | begin, |
| const Iterator | end, | ||
| const int | index, | ||
| const Box & | box, | ||
| const int | depth = 0 |
||
| ) | [inline, private] |
Definition at line 639 of file bvh_tree.hpp.
References moab::common_tree::assign_entities(), box(), moab::common_tree::box_contains_box(), moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::find_split(), SMAX, and moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::tree_.
Referenced by moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::Bvh_tree().
{
#ifdef BVH_TREE_DEBUG
for( Iterator i = begin; i != end; ++i )
{
if( !box_contains_box( box, ( *i )->second.first, 0 ) )
{
std::cerr << "depth: " << depth << std::endl;
std::cerr << "BB:" << box << "EB:" << ( *i )->second.first << std::endl;
std::exit( -1 );
}
}
#endif
const std::size_t total_num_elements = std::distance( begin, end );
Node& node = tree_[index];
// logic for splitting conditions
if( total_num_elements > SMAX )
{
_bvh::_Split_data data;
data.bounding_box = box;
find_split( begin, end, data );
// assign data to node
node.Lmax = data.Lmax;
node.Rmin = data.Rmin;
node.dim = data.dim;
node.child = tree_.size();
// insert left, right children;
tree_.push_back( Node() );
tree_.push_back( Node() );
const int left_depth = build_tree( begin, begin + data.nl, node.child, data.left_box, depth + 1 );
const int right_depth = build_tree( begin + data.nl, end, node.child + 1, data.right_box, depth + 1 );
return std::max( left_depth, right_depth );
}
node.dim = 3;
ct::assign_entities( node.entities, begin, end );
return depth;
}
| void moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::choose_best_split | ( | const Splits & | splits, |
| Split_data & | data | ||
| ) | const [inline] |
Definition at line 498 of file bvh_tree.hpp.
References compare().
Referenced by moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::find_split().
{
typedef typename Splits::const_iterator List_iterator;
typedef typename List_iterator::value_type::const_iterator Split_iterator;
typedef typename Split_iterator::value_type Split;
std::vector< Split > best_splits;
typedef typename _bvh::Split_comparator< Split > Comparator;
Comparator compare;
for( List_iterator i = splits.begin(); i != splits.end(); ++i )
{
Split_iterator j = std::min_element( i->begin(), i->end(), compare );
best_splits.push_back( *j );
}
data = *std::min_element( best_splits.begin(), best_splits.end(), compare );
}
| void moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::establish_buckets | ( | const Iterator | begin, |
| const Iterator | end, | ||
| const Bounding_box & | interval, | ||
| Buckets & | buckets | ||
| ) | const [inline] |
Definition at line 267 of file bvh_tree.hpp.
References moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::bounding_box, box(), moab::common_tree::box_contains_box(), moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::bucket_index(), dim, NUM_DIM, and moab::common_tree::update_bounding_box().
Referenced by moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::find_split().
{
// put each element into its bucket
for( Iterator i = begin; i != end; ++i )
{
const Bounding_box& box = ( *i )->second.first;
for( std::size_t dim = 0; dim < NUM_DIM; ++dim )
{
const std::size_t index = bucket_index( box, interval, dim );
_bvh::_Bucket& bucket = buckets[dim][index];
if( bucket.size > 0 )
{
ct::update_bounding_box( bucket.bounding_box, box );
}
else
{
bucket.bounding_box = box;
}
bucket.size++;
}
}
#ifdef BVH_TREE_DEBUG
Bounding_box elt_union = ( *begin )->second.first;
for( Iterator i = begin; i != end; ++i )
{
const Bounding_box& box = ( *i )->second.first;
ct::update_bounding_box( elt_union, box );
for( std::size_t dim = 0; dim < NUM_DIM; ++dim )
{
const std::size_t index = bucket_index( box, interval, dim );
_bvh::_Bucket& bucket = buckets[dim][index];
if( !box_contains_box( bucket.bounding_box, box ) )
{
std::cerr << "Buckets not covering elements!" << std::endl;
}
}
}
if( !box_contains_box( elt_union, interval ) )
{
std::cout << "element union: " << std::endl << elt_union;
std::cout << "intervals: " << std::endl << interval;
std::cout << "union of elts does not contain original box!" << std::endl;
}
if( !box_contains_box( interval, elt_union ) )
{
std::cout << "original box does not contain union of elts" << std::endl;
std::cout << interval << std::endl;
std::cout << elt_union << std::endl;
}
typedef typename Buckets::value_type Bucket_list;
typedef typename Bucket_list::const_iterator Bucket_iterator;
for( std::size_t d = 0; d < NUM_DIM; ++d )
{
std::vector< std::size_t > nonempty;
const Bucket_list& buckets_ = buckets[d];
std::size_t j = 0;
for( Bucket_iterator i = buckets_.begin(); i != buckets_.end(); ++i, ++j )
{
if( i->size > 0 )
{
nonempty.push_back( j );
}
}
Bounding_box test_box = buckets_[nonempty.front()].bounding_box;
for( std::size_t i = 0; i < nonempty.size(); ++i )
{
ct::update_bounding_box( test_box, buckets_[nonempty[i]].bounding_box );
}
if( !box_contains_box( test_box, interval ) )
{
std::cout << "union of buckets in dimension: " << d << "does not contain original box!" << std::endl;
}
if( !box_contains_box( interval, test_box ) )
{
std::cout << "original box does "
<< "not contain union of buckets"
<< "in dimension: " << d << std::endl;
std::cout << interval << std::endl;
std::cout << test_box << std::endl;
}
}
#endif
}
| Result& moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::find | ( | const Vector & | point, |
| const double | tol, | ||
| Result & | result | ||
| ) | const [inline] |
Definition at line 752 of file bvh_tree.hpp.
References moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::_find_point().
{
typedef typename Vector::const_iterator Point_iterator;
return _find_point( point, 0, tol, result );
}
| void moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::find_split | ( | const Iterator & | begin, |
| const Iterator & | end, | ||
| Split_data & | data | ||
| ) | const [inline] |
Definition at line 515 of file bvh_tree.hpp.
References moab::common_tree::box_contains_box(), moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::choose_best_split(), moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::establish_buckets(), moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::initialize_splits(), left_box, moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::median_order(), NUM_BUCKETS, NUM_DIM, NUM_SPLITS, moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::order_elements(), right_box, and moab::common_tree::update_bounding_box().
Referenced by moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::build_tree().
{
typedef typename Iterator::value_type Map_iterator;
typedef typename Map_iterator::value_type::second_type Box_data;
typedef typename Box_data::first_type _Bounding_box; // Note, not global typedef moab::common_tree::Box<
// double> Bounding_box;
typedef typename std::vector< Split_data > Split_list;
typedef typename std::vector< Split_list > Splits;
typedef typename Splits::iterator Split_iterator;
typedef typename std::vector< _bvh::_Bucket > Bucket_list;
typedef typename std::vector< Bucket_list > Buckets;
Buckets buckets( NUM_DIM, Bucket_list( NUM_BUCKETS ) );
Splits splits( NUM_DIM, Split_list( NUM_SPLITS, data ) );
const _Bounding_box interval = data.bounding_box;
establish_buckets( begin, end, interval, buckets );
initialize_splits( splits, buckets, data );
choose_best_split( splits, data );
const bool use_median = ( 0 == data.nl ) || ( data.nr == 0 );
if( !use_median )
{
order_elements( begin, end, data );
}
else
{
median_order( begin, end, data );
}
#ifdef BVH_TREE_DEBUG
bool seen_one = false, issue = false;
bool first_left = true, first_right = true;
std::size_t count_left = 0, count_right = 0;
typename Split_data::Box left_box, right_box;
for( Iterator i = begin; i != end; ++i )
{
double order = ( *i )->second.second;
if( order != 0 && order != 1 )
{
std::cerr << "Invalid order element !";
std::cerr << order << std::endl;
std::exit( -1 );
}
if( order == 1 )
{
seen_one = 1;
count_right++;
if( first_right )
{
right_box = ( *i )->second.first;
first_right = false;
}
else
{
ct::update_bounding_box( right_box, ( *i )->second.first );
}
if( !box_contains_box( data.right_box, ( *i )->second.first ) )
{
if( !issue )
{
std::cerr << "Bounding right box issue!" << std::endl;
}
issue = true;
}
}
if( order == 0 )
{
count_left++;
if( first_left )
{
left_box = ( *i )->second.first;
first_left = false;
}
else
{
ct::update_bounding_box( left_box, ( *i )->second.first );
}
if( !box_contains_box( data.left_box, ( *i )->second.first ) )
{
if( !issue )
{
std::cerr << "Bounding left box issue!" << std::endl;
}
issue = true;
}
if( seen_one )
{
std::cerr << "Invalid ordering!" << std::endl;
std::cout << ( *( i - 1 ) )->second.second << order << std::endl;
exit( -1 );
}
}
}
if( !box_contains_box( left_box, data.left_box ) )
{
std::cout << "left elts do not contain left box" << std::endl;
}
if( !box_contains_box( data.left_box, left_box ) )
{
std::cout << "left box does not contain left elts" << std::endl;
}
if( !box_contains_box( right_box, data.right_box ) )
{
std::cout << "right elts do not contain right box" << std::endl;
}
if( !box_contains_box( data.right_box, right_box ) )
{
std::cout << "right box do not contain right elts" << std::endl;
}
if( count_left != data.nl || count_right != data.nr )
{
std::cerr << "counts are off!" << std::endl;
std::cerr << "total: " << std::distance( begin, end ) << std::endl;
std::cerr << "Dim: " << data.dim << std::endl;
std::cerr << data.Lmax << " , " << data.Rmin << std::endl;
std::cerr << "Right box: " << std::endl << data.right_box << "Left box: " << std::endl << data.left_box;
std::cerr << "supposed to be: " << data.nl << " " << data.nr << std::endl;
std::cerr << "accountant says: " << count_left << " " << count_right << std::endl;
std::exit( -1 );
}
#endif
}
| void moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::initialize_splits | ( | Splits & | splits, |
| const Buckets & | buckets, | ||
| const Split_data & | data | ||
| ) | const [inline] |
Definition at line 380 of file bvh_tree.hpp.
References moab::common_tree::box_contains_box(), NUM_DIM, moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::set_interval(), and moab::common_tree::update_bounding_box().
Referenced by moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::find_split().
{
typedef typename Buckets::value_type Bucket_list;
typedef typename Bucket_list::value_type Bucket;
typedef typename Bucket_list::const_iterator Bucket_iterator;
typedef typename Splits::value_type Split_list;
typedef typename Split_list::value_type Split;
typedef typename Split_list::iterator Split_iterator;
for( std::size_t d = 0; d < NUM_DIM; ++d )
{
const Split_iterator splits_begin = splits[d].begin();
const Split_iterator splits_end = splits[d].end();
const Bucket_iterator left_begin = buckets[d].begin();
const Bucket_iterator _end = buckets[d].end();
Bucket_iterator left_end = buckets[d].begin() + 1;
for( Split_iterator s = splits_begin; s != splits_end; ++s, ++left_end )
{
s->nl = set_interval( s->left_box, left_begin, left_end );
if( s->nl == 0 )
{
s->left_box = data.bounding_box;
s->left_box.max[d] = s->left_box.min[d];
}
s->nr = set_interval( s->right_box, left_end, _end );
if( s->nr == 0 )
{
s->right_box = data.bounding_box;
s->right_box.min[d] = s->right_box.max[d];
}
s->Lmax = s->left_box.max[d];
s->Rmin = s->right_box.min[d];
s->split = std::distance( splits_begin, s );
s->dim = d;
}
#ifdef BVH_TREE_DEBUG
for( Split_iterator s = splits_begin; s != splits_end; ++s, ++left_end )
{
typename Split::Box test_box = s->left_box;
ct::update_bounding_box( test_box, s->right_box );
if( !box_contains_box( data.bounding_box, test_box ) )
{
std::cout << "nr: " << s->nr << std::endl;
std::cout << "Test box: " << std::endl << test_box;
std::cout << "Left box: " << std::endl << s->left_box;
std::cout << "Right box: " << std::endl << s->right_box;
std::cout << "Interval: " << std::endl << data.bounding_box;
std::cout << "Split boxes larger than bb" << std::endl;
}
if( !box_contains_box( test_box, data.bounding_box ) )
{
std::cout << "bb larger than union "
<< "of split boxes" << std::endl;
}
}
#endif
}
}
| void moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::median_order | ( | const Iterator & | begin, |
| const Iterator & | end, | ||
| Split_data & | data | ||
| ) | const [inline] |
Definition at line 451 of file bvh_tree.hpp.
References moab::common_tree::box_contains_box(), center(), moab::common_tree::compute_box_center(), and moab::common_tree::update_bounding_box().
Referenced by moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::find_split().
{
typedef typename Iterator::value_type Map_iterator;
for( Iterator i = begin; i != end; ++i )
{
const double center = compute_box_center( ( *i )->second.first, data.dim );
( *i )->second.second = center;
}
std::sort( begin, end, _bvh::Iterator_comparator< Map_iterator >() );
const std::size_t total = std::distance( begin, end );
Iterator middle = begin + ( total / 2 );
double middle_center = ( *middle )->second.second;
middle_center += ( *( ++middle ) )->second.second;
middle_center /= 2.0;
data.split = middle_center;
data.nl = std::distance( begin, middle ) + 1;
data.nr = total - data.nl;
middle++;
data.left_box = ( *begin )->second.first;
data.right_box = ( *middle )->second.first;
for( Iterator i = begin; i != middle; ++i )
{
( *i )->second.second = 0;
update_bounding_box( data.left_box, ( *i )->second.first );
}
for( Iterator i = middle; i != end; ++i )
{
( *i )->second.second = 1;
update_bounding_box( data.right_box, ( *i )->second.first );
}
data.Rmin = data.right_box.min[data.dim];
data.Lmax = data.left_box.max[data.dim];
#ifdef BVH_TREE_DEBUG
typename Split_data::Box test_box = data.left_box;
ct::update_bounding_box( test_box, data.right_box );
if( !box_contains_box( data.bounding_box, test_box ) )
{
std::cerr << "MEDIAN: BB Does not contain splits" << std::endl;
}
if( !box_contains_box( test_box, data.bounding_box ) )
{
std::cerr << "MEDIAN: splits do not contain BB" << std::endl;
}
#endif
}
| void moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::order_elements | ( | const Iterator & | begin, |
| const Iterator & | end, | ||
| const Split_data & | data | ||
| ) | const [inline] |
Definition at line 439 of file bvh_tree.hpp.
References moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::bucket_index().
Referenced by moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::find_split().
{
typedef typename Iterator::value_type Map_iterator;
for( Iterator i = begin; i != end; ++i )
{
const int index = bucket_index( ( *i )->second.first, data.bounding_box, data.dim );
( *i )->second.second = ( index <= data.split ) ? 0 : 1;
}
std::sort( begin, end, _bvh::Iterator_comparator< Map_iterator >() );
}
| std::size_t moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::set_interval | ( | Box & | interval, |
| const Iterator | begin, | ||
| const Iterator | end | ||
| ) | const [inline] |
Definition at line 355 of file bvh_tree.hpp.
References box(), moab::GeomUtil::first(), and moab::common_tree::update_bounding_box().
Referenced by moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::initialize_splits().
{
bool first = true;
std::size_t count = 0;
for( Iterator b = begin; b != end; ++b )
{
const Box& box = b->bounding_box;
count += b->size;
if( b->size != 0 )
{
if( first )
{
interval = box;
first = false;
}
else
{
ct::update_bounding_box( interval, box );
}
}
}
return count;
}
Box moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::bounding_box [private] |
Definition at line 794 of file bvh_tree.hpp.
Referenced by moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::Bvh_tree(), and moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::establish_buckets().
Parametrizer& moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::entity_contains [private] |
Definition at line 795 of file bvh_tree.hpp.
Referenced by moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::_find_point(), and moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::bruteforce_find().
const Entity_handles& moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::entity_handles_ [private] |
Definition at line 791 of file bvh_tree.hpp.
Referenced by moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::Bvh_tree().
Moab& moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::moab [private] |
Nodes moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::tree_ [private] |
Definition at line 792 of file bvh_tree.hpp.
Referenced by moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::_find_point(), moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::bruteforce_find(), moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::build_tree(), and moab::Bvh_tree< _Entity_handles, _Box, _Moab, _Parametrizer >::Bvh_tree().
1.7.6.1