moab::BSPTree Class Reference

BSP tree, for sorting and searching entities spatially. More...

#include <BSPTree.hpp>

Collaboration diagram for moab::BSPTree:

Classes
struct	Plane
	struct to store a plane More...

Public Types
enum	Axis { X = 0 , Y = 1 , Z = 2 }
	Enumerate split plane directions. More...

Public Member Functions
	BSPTree (Interface *iface, const char *tagname=0, unsigned meshset_creation_flags=MESHSET_SET)
	BSPTree (Interface *iface, bool destroy_created_trees, const char *tagname=0, unsigned meshset_creation_flags=MESHSET_SET)
	~BSPTree ()
ErrorCode	get_split_plane (EntityHandle node, Plane &plane)
	Get split plane for tree node. More...
ErrorCode	set_split_plane (EntityHandle node, const Plane &plane)
	Set split plane for tree node. More...
ErrorCode	get_tree_box (EntityHandle root_node, double corner_coords[8][3])
	Get bounding box for entire tree. More...
ErrorCode	get_tree_box (EntityHandle root_node, double corner_coords[24])
	Get bounding box for entire tree. More...
ErrorCode	set_tree_box (EntityHandle root_node, const double box_min[3], const double box_max[3])
	Set bounding box for entire tree. More...
ErrorCode	set_tree_box (EntityHandle root_node, const double corner_coords[8][3])
ErrorCode	create_tree (const double box_min[3], const double box_max[3], EntityHandle &root_handle)
	Create tree root node. More...
ErrorCode	create_tree (const double corner_coords[8][3], EntityHandle &root_handle)
ErrorCode	create_tree (EntityHandle &root_handle)
	Create tree root node. More...
ErrorCode	find_all_trees (Range &results)
	Find all tree roots. More...
ErrorCode	delete_tree (EntityHandle root_handle)
	Destroy a tree. More...
Interface *	moab ()
ErrorCode	get_tree_iterator (EntityHandle tree_root, BSPTreeIter &result)
	Get iterator for tree. More...
ErrorCode	get_tree_end_iterator (EntityHandle tree_root, BSPTreeIter &result)
	Get iterator at right-most ('last') leaf. More...
ErrorCode	split_leaf (BSPTreeIter &leaf, Plane plane)
	Split leaf of tree Updates iterator location to point to first new leaf node. More...
ErrorCode	split_leaf (BSPTreeIter &leaf, Plane plane, EntityHandle &left_child, EntityHandle &right_child)
	Split leaf of tree Updates iterator location to point to first new leaf node. More...
ErrorCode	split_leaf (BSPTreeIter &leaf, Plane plane, const Range &left_entities, const Range &right_entities)
	Split leaf of tree Updates iterator location to point to first new leaf node. More...
ErrorCode	split_leaf (BSPTreeIter &leaf, Plane plane, const std::vector< EntityHandle > &left_entities, const std::vector< EntityHandle > &right_entities)
	Split leaf of tree Updates iterator location to point to first new leaf node. More...
ErrorCode	merge_leaf (BSPTreeIter &iter)
	Merge the leaf pointed to by the current iterator with it's sibling. If the sibling is not a leaf, multiple merges may be done. More...
ErrorCode	leaf_containing_point (EntityHandle tree_root, const double point[3], EntityHandle &leaf_out)
	Get leaf containing input position. More...
ErrorCode	leaf_containing_point (EntityHandle tree_root, const double xyz[3], BSPTreeIter &result)
	Get iterator at leaf containing input position. More...

Static Public Member Functions
static double	epsilon ()

Private Member Functions
ErrorCode	init_tags (const char *tagname=0)

Private Attributes
Interface *	mbInstance
Tag	planeTag
Tag	rootTag
unsigned	meshSetFlags
bool	cleanUpTrees
std::vector< EntityHandle >	createdTrees

Detailed Description

BSP tree, for sorting and searching entities spatially.

Definition at line 42 of file BSPTree.hpp.

Member Enumeration Documentation

Axis

enum moab::BSPTree::Axis

Enumerate split plane directions.

Enumerator
X
Y
Z

Definition at line 69 of file BSPTree.hpp.

    {
        X = 0,
        Y = 1,
        Z = 2
    };

Constructor & Destructor Documentation

BSPTree() [1/2]

moab::BSPTree::BSPTree	(	Interface *	iface,
		const char *	tagname = 0,
		unsigned	meshset_creation_flags = MESHSET_SET
	)

Definition at line 109 of file BSPTree.cpp.

    : mbInstance( mb ), meshSetFlags( set_flags ), cleanUpTrees( false )
{
    init_tags( tagname );
}

References init_tags().

BSPTree() [2/2]

moab::BSPTree::BSPTree	(	Interface *	iface,
		bool	destroy_created_trees,
		const char *	tagname = 0,
		unsigned	meshset_creation_flags = MESHSET_SET
	)

Definition at line 115 of file BSPTree.cpp.

    : mbInstance( mb ), meshSetFlags( set_flags ), cleanUpTrees( destroy_created_trees )
{
    init_tags( tagname );
}

References init_tags().

~BSPTree()

moab::BSPTree::~BSPTree

(

)

Definition at line 121 of file BSPTree.cpp.

{
    if( !cleanUpTrees ) return;
 
    while( !createdTrees.empty() )
    {
        EntityHandle tree = createdTrees.back();
        // make sure this is a tree (rather than some other, stale handle)
        const void* data_ptr = 0;
        ErrorCode rval       = moab()->tag_get_by_ptr( rootTag, &tree, 1, &data_ptr );
        if( MB_SUCCESS == rval ) rval = delete_tree( tree );
        if( MB_SUCCESS != rval ) createdTrees.pop_back();
    }
}

References cleanUpTrees, createdTrees, delete_tree(), ErrorCode, MB_SUCCESS, moab(), rootTag, and moab::Interface::tag_get_by_ptr().

Member Function Documentation

create_tree() [1/3]

ErrorCode moab::BSPTree::create_tree	(	const double	box_min[3],
		const double	box_max[3],
		EntityHandle &	root_handle
	)

Create tree root node.

Definition at line 203 of file BSPTree.cpp.

{
    double corners[8][3];
    corners_from_box( box_min, box_max, corners );
    return create_tree( corners, root_handle );
}

References box_max(), box_min(), and moab::corners_from_box().

Referenced by create_tree().

create_tree() [2/3]

ErrorCode moab::BSPTree::create_tree	(	const double	corner_coords[8][3],
		EntityHandle &	root_handle
	)

Definition at line 186 of file BSPTree.cpp.

{
    ErrorCode rval = moab()->create_meshset( meshSetFlags, root_handle );
    if( MB_SUCCESS != rval ) return rval;
 
    rval = set_tree_box( root_handle, corners );
    if( MB_SUCCESS != rval )
    {
        moab()->delete_entities( &root_handle, 1 );
        root_handle = 0;
        return rval;
    }
 
    createdTrees.push_back( root_handle );
    return MB_SUCCESS;
}

References moab::Interface::create_meshset(), createdTrees, moab::Interface::delete_entities(), ErrorCode, MB_SUCCESS, meshSetFlags, moab(), and set_tree_box().

create_tree() [3/3]

ErrorCode moab::BSPTree::create_tree

(

EntityHandle &

root_handle

)

Create tree root node.

Definition at line 179 of file BSPTree.cpp.

{
    const double min[3] = { -HUGE_VAL, -HUGE_VAL, -HUGE_VAL };
    const double max[3] = { HUGE_VAL, HUGE_VAL, HUGE_VAL };
    return create_tree( min, max, root_handle );
}

References create_tree().

delete_tree()

ErrorCode moab::BSPTree::delete_tree

(

EntityHandle

root_handle

)

Destroy a tree.

Definition at line 210 of file BSPTree.cpp.

{
    ErrorCode rval;
 
    std::vector< EntityHandle > children, dead_sets, current_sets;
    current_sets.push_back( root_handle );
    while( !current_sets.empty() )
    {
        EntityHandle set = current_sets.back();
        current_sets.pop_back();
        dead_sets.push_back( set );
        rval = moab()->get_child_meshsets( set, children );
        if( MB_SUCCESS != rval ) return rval;
        std::copy( children.begin(), children.end(), std::back_inserter( current_sets ) );
        children.clear();
    }
 
    rval = moab()->tag_delete_data( rootTag, &root_handle, 1 );
    if( MB_SUCCESS != rval ) return rval;
 
    createdTrees.erase( std::remove( createdTrees.begin(), createdTrees.end(), root_handle ), createdTrees.end() );
    return moab()->delete_entities( &dead_sets[0], dead_sets.size() );
}

References children, createdTrees, moab::Interface::delete_entities(), ErrorCode, moab::Interface::get_child_meshsets(), MB_SUCCESS, moab(), rootTag, and moab::Interface::tag_delete_data().

Referenced by ~BSPTree().

epsilon()

static double moab::BSPTree::epsilon ( )

inlinestatic

Definition at line 54 of file BSPTree.hpp.

    {
        return 1e-6;
    }

Referenced by moab::BSPTreeBoxIter::side_on_plane(), and moab::BSPTreeBoxIter::splits().

find_all_trees()

ErrorCode moab::BSPTree::find_all_trees

(

Range &

results

)

Find all tree roots.

Definition at line 234 of file BSPTree.cpp.

{
    return moab()->get_entities_by_type_and_tag( 0, MBENTITYSET, &rootTag, 0, 1, results );
}

References moab::Interface::get_entities_by_type_and_tag(), MBENTITYSET, moab(), and rootTag.

get_split_plane()

ErrorCode moab::BSPTree::get_split_plane ( EntityHandle  node, Plane &  plane  )

inline

Get split plane for tree node.

Definition at line 166 of file BSPTree.hpp.

    {
        return moab()->tag_get_data( planeTag, &node, 1, &plane );
    }

References moab(), planeTag, and moab::Interface::tag_get_data().

Referenced by moab::BSPTreeIter::calculate_polyhedron(), moab::BSPTreeBoxIter::get_neighbors(), moab::BSPTreeIter::get_parent_split_plane(), leaf_containing_point(), moab::BSPTreePlaneIter::operator++(), moab::BSPTreeBoxIter::sibling_side(), moab::BSPTreeBoxIter::step(), moab::BSPTreeBoxIter::step_to_first_leaf(), and moab::BSPTreeBoxIter::up().

get_tree_box() [1/2]

ErrorCode moab::BSPTree::get_tree_box	(	EntityHandle	root_node,
		double	corner_coords[24]
	)

Get bounding box for entire tree.

Definition at line 174 of file BSPTree.cpp.

{
    return moab()->tag_get_data( rootTag, &root_handle, 1, corners );
}

References moab(), rootTag, and moab::Interface::tag_get_data().

get_tree_box() [2/2]

ErrorCode moab::BSPTree::get_tree_box	(	EntityHandle	root_node,
		double	corner_coords[8][3]
	)

Get bounding box for entire tree.

Definition at line 169 of file BSPTree.cpp.

{
    return moab()->tag_get_data( rootTag, &root_handle, 1, corners );
}

References moab(), rootTag, and moab::Interface::tag_get_data().

Referenced by moab::BSPTreeIter::calculate_polyhedron(), moab::BSPTreeBoxIter::initialize(), and moab::BSPTreeIter::intersect_ray().

get_tree_end_iterator()

ErrorCode moab::BSPTree::get_tree_end_iterator	(	EntityHandle	tree_root,
		BSPTreeIter &	result
	)

Get iterator at right-most ('last') leaf.

Definition at line 246 of file BSPTree.cpp.

{
    ErrorCode rval = iter.initialize( this, root );
    if( MB_SUCCESS != rval ) return rval;
    return iter.step_to_first_leaf( BSPTreeIter::RIGHT );
}

References ErrorCode, moab::BSPTreeIter::initialize(), MB_SUCCESS, moab::BSPTreeIter::RIGHT, and moab::BSPTreeIter::step_to_first_leaf().

get_tree_iterator()

ErrorCode moab::BSPTree::get_tree_iterator	(	EntityHandle	tree_root,
		BSPTreeIter &	result
	)

Get iterator for tree.

Definition at line 239 of file BSPTree.cpp.

{
    ErrorCode rval = iter.initialize( this, root );
    if( MB_SUCCESS != rval ) return rval;
    return iter.step_to_first_leaf( BSPTreeIter::LEFT );
}

References ErrorCode, moab::BSPTreeIter::initialize(), moab::BSPTreeIter::LEFT, MB_SUCCESS, and moab::BSPTreeIter::step_to_first_leaf().

init_tags()

ErrorCode moab::BSPTree::init_tags ( const char *  tagname = 0 )

private

Definition at line 93 of file BSPTree.cpp.

{
    if( !tagname ) tagname = MB_BSP_TREE_DEFAULT_TAG_NAME;
 
    std::string rootname( tagname );
    rootname += "_box";
 
    ErrorCode rval = moab()->tag_get_handle( tagname, 4, MB_TYPE_DOUBLE, planeTag, MB_TAG_CREAT | MB_TAG_DENSE );
    if( MB_SUCCESS != rval )
        planeTag = 0;
    else
        rval = moab()->tag_get_handle( rootname.c_str(), 24, MB_TYPE_DOUBLE, rootTag, MB_TAG_CREAT | MB_TAG_SPARSE );
    if( MB_SUCCESS != rval ) rootTag = 0;
    return rval;
}

References ErrorCode, MB_BSP_TREE_DEFAULT_TAG_NAME, MB_SUCCESS, MB_TAG_CREAT, MB_TAG_DENSE, MB_TAG_SPARSE, MB_TYPE_DOUBLE, moab(), planeTag, rootTag, and moab::Interface::tag_get_handle().

Referenced by BSPTree().

leaf_containing_point() [1/2]

ErrorCode moab::BSPTree::leaf_containing_point	(	EntityHandle	tree_root,
		const double	point[3],
		EntityHandle &	leaf_out
	)

Get leaf containing input position.

Does not take into account global bounding box of tree.

• Therefore there is always one leaf containing the point.
• If caller wants to account for global bounding box, then caller can test against that box and not call this method at all if the point is outside the box, as there is no leaf containing the point in that case.

Definition at line 1135 of file BSPTree.cpp.

{
    std::vector< EntityHandle > children;
    Plane plane;
    EntityHandle node = tree_root;
    ErrorCode rval    = moab()->get_child_meshsets( node, children );
    if( MB_SUCCESS != rval ) return rval;
    while( !children.empty() )
    {
        rval = get_split_plane( node, plane );
        if( MB_SUCCESS != rval ) return rval;
 
        node = children[plane.above( point )];
        children.clear();
        rval = moab()->get_child_meshsets( node, children );
        if( MB_SUCCESS != rval ) return rval;
    }
    leaf_out = node;
    return MB_SUCCESS;
}

References moab::BSPTree::Plane::above(), children, ErrorCode, moab::Interface::get_child_meshsets(), get_split_plane(), MB_SUCCESS, and moab().

leaf_containing_point() [2/2]

ErrorCode moab::BSPTree::leaf_containing_point	(	EntityHandle	tree_root,
		const double	xyz[3],
		BSPTreeIter &	result
	)

Get iterator at leaf containing input position.

Returns MB_ENTITY_NOT_FOUND if point is not within bounding box of tree.

Definition at line 1156 of file BSPTree.cpp.

{
    ErrorCode rval;
 
    rval = iter.initialize( this, root, point );
    if( MB_SUCCESS != rval ) return rval;
 
    for( ;; )
    {
        iter.childVect.clear();
        rval = moab()->get_child_meshsets( iter.handle(), iter.childVect );
        if( MB_SUCCESS != rval || iter.childVect.empty() ) return rval;
 
        Plane plane;
        rval = get_split_plane( iter.handle(), plane );
        if( MB_SUCCESS != rval ) return rval;
 
        rval = iter.down( plane, ( BSPTreeIter::Direction )( plane.above( point ) ) );
        if( MB_SUCCESS != rval ) return rval;
    }
}

References moab::BSPTree::Plane::above(), moab::BSPTreeIter::childVect, moab::BSPTreeIter::down(), ErrorCode, moab::Interface::get_child_meshsets(), get_split_plane(), moab::BSPTreeIter::handle(), moab::BSPTreeIter::initialize(), MB_SUCCESS, and moab().

merge_leaf()

ErrorCode moab::BSPTree::merge_leaf

(

BSPTreeIter &

iter

)

Merge the leaf pointed to by the current iterator with it's sibling. If the sibling is not a leaf, multiple merges may be done.

Definition at line 325 of file BSPTree.cpp.

{
    ErrorCode rval;
    if( iter.depth() == 1 )  // at root
        return MB_FAILURE;
 
    // Move iter to parent
    iter.up();
 
    // Get sets to merge
    EntityHandle parent = iter.handle();
    iter.childVect.clear();
    rval = moab()->get_child_meshsets( parent, iter.childVect );
    if( MB_SUCCESS != rval ) return rval;
 
    // Remove child links
    moab()->remove_child_meshset( parent, iter.childVect[0] );
    moab()->remove_child_meshset( parent, iter.childVect[1] );
    std::vector< EntityHandle > stack( iter.childVect );
 
    // Get all entities from children and put them in parent
    Range range;
    while( !stack.empty() )
    {
        EntityHandle h = stack.back();
        stack.pop_back();
        range.clear();
        rval = moab()->get_entities_by_handle( h, range );
        if( MB_SUCCESS != rval ) return rval;
        rval = moab()->add_entities( parent, range );
        if( MB_SUCCESS != rval ) return rval;
 
        iter.childVect.clear();
        rval = moab()->get_child_meshsets( h, iter.childVect );MB_CHK_ERR( rval );
        if( !iter.childVect.empty() )
        {
            moab()->remove_child_meshset( h, iter.childVect[0] );
            moab()->remove_child_meshset( h, iter.childVect[1] );
            stack.push_back( iter.childVect[0] );
            stack.push_back( iter.childVect[1] );
        }
 
        rval = moab()->delete_entities( &h, 1 );
        if( MB_SUCCESS != rval ) return rval;
    }
 
    return MB_SUCCESS;
}

References moab::Interface::add_entities(), moab::Range::back(), moab::BSPTreeIter::childVect, moab::Range::clear(), moab::Interface::delete_entities(), moab::BSPTreeIter::depth(), ErrorCode, moab::Interface::get_child_meshsets(), moab::Interface::get_entities_by_handle(), moab::BSPTreeIter::handle(), MB_CHK_ERR, MB_SUCCESS, moab(), moab::Interface::remove_child_meshset(), and moab::BSPTreeIter::up().

moab()

Interface* moab::BSPTree::moab ( )

inline

Definition at line 197 of file BSPTree.hpp.

    {
        return mbInstance;
    }

References mbInstance.

Referenced by moab::BSPTreeIter::calculate_polyhedron(), create_tree(), delete_tree(), moab::BSPTreeIter::down(), moab::BSPTreeBoxIter::down(), find_all_trees(), moab::BSPTreeBoxIter::get_neighbors(), get_split_plane(), get_tree_box(), init_tags(), moab::BSPTreeIter::is_sibling(), leaf_containing_point(), merge_leaf(), moab::BSPTreePlaneIter::operator++(), set_split_plane(), set_tree_box(), moab::BSPTreeIter::sibling_is_forward(), split_leaf(), moab::BSPTreeIter::step(), moab::BSPTreeBoxIter::step(), moab::BSPTreeIter::step_to_first_leaf(), moab::BSPTreeBoxIter::step_to_first_leaf(), and ~BSPTree().

set_split_plane()

ErrorCode moab::BSPTree::set_split_plane	(	EntityHandle	node,
		const Plane &	plane
	)

Set split plane for tree node.

Definition at line 136 of file BSPTree.cpp.

{
    // check for unit-length normal
    const double lensqr = p.norm[0] * p.norm[0] + p.norm[1] * p.norm[1] + p.norm[2] * p.norm[2];
    if( fabs( lensqr - 1.0 ) < std::numeric_limits< double >::epsilon() )
        return moab()->tag_set_data( planeTag, &node, 1, &p );
 
    const double inv_len = 1.0 / sqrt( lensqr );
    Plane p2( p );
    p2.norm[0] *= inv_len;
    p2.norm[1] *= inv_len;
    p2.norm[2] *= inv_len;
    p2.coeff *= inv_len;
 
    // check for zero-length normal
    if( !Util::is_finite( p2.norm[0] + p2.norm[1] + p2.norm[2] + p2.coeff ) ) return MB_FAILURE;
 
    // store plane
    return moab()->tag_set_data( planeTag, &node, 1, &p2 );
}

References moab::BSPTree::Plane::coeff, moab::Util::is_finite(), moab(), moab::BSPTree::Plane::norm, planeTag, and moab::Interface::tag_set_data().

Referenced by split_leaf().

set_tree_box() [1/2]

ErrorCode moab::BSPTree::set_tree_box	(	EntityHandle	root_node,
		const double	box_min[3],
		const double	box_max[3]
	)

Set bounding box for entire tree.

Definition at line 157 of file BSPTree.cpp.

{
    double corners[8][3];
    corners_from_box( box_min, box_max, corners );
    return set_tree_box( root_handle, corners );
}

References box_max(), box_min(), and moab::corners_from_box().

Referenced by create_tree().

set_tree_box() [2/2]

ErrorCode moab::BSPTree::set_tree_box	(	EntityHandle	root_node,
		const double	corner_coords[8][3]
	)

Definition at line 164 of file BSPTree.cpp.

{
    return moab()->tag_set_data( rootTag, &root_handle, 1, corners );
}

References moab(), rootTag, and moab::Interface::tag_set_data().

split_leaf() [1/4]

ErrorCode moab::BSPTree::split_leaf	(	BSPTreeIter &	leaf,
		Plane	plane
	)

Split leaf of tree Updates iterator location to point to first new leaf node.

Definition at line 280 of file BSPTree.cpp.

{
    EntityHandle left, right;
    return split_leaf( leaf, plane, left, right );
}

Referenced by split_leaf().

split_leaf() [2/4]

ErrorCode moab::BSPTree::split_leaf	(	BSPTreeIter &	leaf,
		Plane	plane,
		const Range &	left_entities,
		const Range &	right_entities
	)

Split leaf of tree Updates iterator location to point to first new leaf node.

Definition at line 286 of file BSPTree.cpp.

{
    EntityHandle left, right, parent = leaf.handle();
    ErrorCode rval = split_leaf( leaf, plane, left, right );
    if( MB_SUCCESS != rval ) return rval;
 
    if( MB_SUCCESS == moab()->add_entities( left, left_entities ) &&
        MB_SUCCESS == moab()->add_entities( right, right_entities ) &&
        MB_SUCCESS == moab()->clear_meshset( &parent, 1 ) )
        return MB_SUCCESS;
 
    moab()->remove_child_meshset( parent, left );
    moab()->remove_child_meshset( parent, right );
    EntityHandle children[] = { left, right };
    moab()->delete_entities( children, 2 );
    return MB_FAILURE;
}

References children, moab::Interface::delete_entities(), ErrorCode, moab::BSPTreeIter::handle(), MB_SUCCESS, moab(), moab::Interface::remove_child_meshset(), and split_leaf().

split_leaf() [3/4]

ErrorCode moab::BSPTree::split_leaf	(	BSPTreeIter &	leaf,
		Plane	plane,
		const std::vector< EntityHandle > &	left_entities,
		const std::vector< EntityHandle > &	right_entities
	)

Split leaf of tree Updates iterator location to point to first new leaf node.

Definition at line 304 of file BSPTree.cpp.

{
    EntityHandle left, right, parent = leaf.handle();
    ErrorCode rval = split_leaf( leaf, plane, left, right );
    if( MB_SUCCESS != rval ) return rval;
 
    if( MB_SUCCESS == moab()->add_entities( left, &left_entities[0], left_entities.size() ) &&
        MB_SUCCESS == moab()->add_entities( right, &right_entities[0], right_entities.size() ) &&
        MB_SUCCESS == moab()->clear_meshset( &parent, 1 ) )
        return MB_SUCCESS;
 
    moab()->remove_child_meshset( parent, left );
    moab()->remove_child_meshset( parent, right );
    EntityHandle children[] = { left, right };
    moab()->delete_entities( children, 2 );
    return MB_FAILURE;
}

References children, moab::Interface::delete_entities(), ErrorCode, moab::BSPTreeIter::handle(), MB_SUCCESS, moab(), moab::Interface::remove_child_meshset(), and split_leaf().

split_leaf() [4/4]

ErrorCode moab::BSPTree::split_leaf	(	BSPTreeIter &	leaf,
		Plane	plane,
		EntityHandle &	left_child,
		EntityHandle &	right_child
	)

Split leaf of tree Updates iterator location to point to first new leaf node.

Definition at line 253 of file BSPTree.cpp.

{
    ErrorCode rval;
 
    rval = moab()->create_meshset( meshSetFlags, left );
    if( MB_SUCCESS != rval ) return rval;
 
    rval = moab()->create_meshset( meshSetFlags, right );
    if( MB_SUCCESS != rval )
    {
        moab()->delete_entities( &left, 1 );
        return rval;
    }
 
    if( MB_SUCCESS != set_split_plane( leaf.handle(), plane ) ||
        MB_SUCCESS != moab()->add_child_meshset( leaf.handle(), left ) ||
        MB_SUCCESS != moab()->add_child_meshset( leaf.handle(), right ) ||
        MB_SUCCESS != leaf.step_to_first_leaf( BSPTreeIter::LEFT ) )
    {
        EntityHandle children[] = { left, right };
        moab()->delete_entities( children, 2 );
        return MB_FAILURE;
    }
 
    return MB_SUCCESS;
}

References children, moab::Interface::create_meshset(), moab::Interface::delete_entities(), ErrorCode, moab::BSPTreeIter::handle(), moab::BSPTreeIter::LEFT, MB_SUCCESS, meshSetFlags, moab(), set_split_plane(), and moab::BSPTreeIter::step_to_first_leaf().

Member Data Documentation

cleanUpTrees

bool moab::BSPTree::cleanUpTrees

private

Definition at line 48 of file BSPTree.hpp.

Referenced by ~BSPTree().

createdTrees

std::vector< EntityHandle > moab::BSPTree::createdTrees

private

Definition at line 49 of file BSPTree.hpp.

Referenced by create_tree(), delete_tree(), and ~BSPTree().

mbInstance

Interface* moab::BSPTree::mbInstance

private

Definition at line 45 of file BSPTree.hpp.

Referenced by moab().

meshSetFlags

unsigned moab::BSPTree::meshSetFlags

private

Definition at line 47 of file BSPTree.hpp.

Referenced by create_tree(), and split_leaf().

planeTag

Tag moab::BSPTree::planeTag

private

Definition at line 46 of file BSPTree.hpp.

Referenced by get_split_plane(), init_tags(), and set_split_plane().

rootTag

Tag moab::BSPTree::rootTag

private

Definition at line 46 of file BSPTree.hpp.

Referenced by delete_tree(), find_all_trees(), get_tree_box(), init_tags(), set_tree_box(), and ~BSPTree().

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

• BSPTree.hpp
• BSPTree.cpp