Enhances geometrical ct builder by allowing to group indices, e.g. the groups are clustered and later expanded, ensuring that all indices in a group are in the same cluster NOTE: bounding boxes per index are not yet supported (bb_min/bb_max)

#include <TBSPCTBuilder.hh>

Inheritance diagram for TGeomGroupCTBuilder:

Public Member Functions
	TGeomGroupCTBuilder (const std::vector< uint > &groups, const TBSPCTBuilder *base_builder)

virtual std::unique_ptr< TClusterTree >	build (const TCoordinate *coord, const idx_t idx_ofs=0) const

virtual std::unique_ptr< TGeomCluster >	divide (const TNodeSet &dofs, const uint lvl, const TBBox &bbox, const TOptClusterSize &csize, const idx_t index_ofs, data_t &data) const
	recursively build cluster tree for indices in dofs

Public Member Functions inherited from TGeomCTBuilder
	TGeomCTBuilder (const uint n_min=CFG::Cluster::nmin, const uint min_leaf_lvl=0)
	construct cluster tree builder

void	adjust_bb (const bool b)
	set flag for adjusting bounding box

void	sort_wrt_size (const bool b)
	set flag for sorting son cluster wrt. size

Protected Member Functions
std::unique_ptr< TGeomCluster >	expand (TCluster cluster, const std::vector< std::vector< uint > > &group_to_idx, const TCoordinate coord, const TPermutation &group_perm, TPermutation &perm, const idx_t idx_ofs) const

Protected Member Functions inherited from TGeomCTBuilder
virtual std::unique_ptr< TGeomCluster >	build_leaf (const TNodeSet &dofs, const uint lvl, const idx_t index_ofs, const TBBox &bbox, data_t &data) const
	create a leaf in a clustertree containing indices in dofs

virtual TBBox	compute_bb (const TNodeSet &dofs, const data_t &data) const
	compute bounding box of index set defined by dofs

virtual void	update_bb (const TNodeSet &dofs, TBBox &bbox, const data_t &data) const
	update bounding box of index set defined by dofs

virtual void	check_bb (TBBox &bbox, const data_t &data) const
	check and update bbox in case of degenerate axis, e.g. very small length

virtual TBBox	support_size (const node_t node, const bool only_idx, const data_t &data) const
	compute support size for single index

Additional Inherited Members
Protected Attributes inherited from TGeomCTBuilder
uint	_n_min
	minimal size of a cluster, i.e. not smaller than this

uint	_min_leaf_lvl
	minimal level on which leaves may occur

bool	_adjust_bb
	flag for adjusting bounding boxes of nodes

bool	_sort_wrt_size
	flag for sorting sub clusters w.r.t. size

Constructor & Destructor Documentation

◆ TGeomGroupCTBuilder()

TGeomGroupCTBuilder	(	const std::vector< uint > &	groups,
		const TBSPCTBuilder *	base_builder
	)

construct cluster tree with index grouping defined by groups and base ct builder base_builder

Member Function Documentation

◆ build()

virtual std::unique_ptr< TClusterTree > build	(	const TCoordinate *	coord,
		const idx_t	idx_ofs = `0`
	)		const

virtual

build cluster tree out of coordinate set but with respect to additional index groups defined by

See also: _groups

Reimplemented from TGeomCTBuilder.

◆ expand()

std::unique_ptr< TGeomCluster > expand	(	TCluster *	cluster,
		const std::vector< std::vector< uint > > &	group_to_idx,
		const TCoordinate *	coord,
		const TPermutation &	group_perm,
		TPermutation &	perm,
		const idx_t	idx_ofs
	)		const

protected

recursively expand index groups and update the corresponding cluster, e.g. size, bounding box, etc.

Public Member Functions

Protected Member Functions

Additional Inherited Members

Constructor & Destructor Documentation

◆ TGeomGroupCTBuilder()

Member Function Documentation

◆ build()

◆ expand()