Helpers for working with CDT::Triangulation. More...

Collaboration diagram for Helpers:

Classes
struct	CDT::DuplicatesInfo
	Information about removed duplicated vertices. More...

Functions
CDT_EXPORT VerticesTriangles	CDT::calculateTrianglesByVertex (const TriangleVec &triangles, VertInd verticesSize)
	Calculate triangles adjacent to vertices (triangles by vertex index)

template<typename T, typename TVertexIter, typename TGetVertexCoordX, typename TGetVertexCoordY>
DuplicatesInfo	CDT::FindDuplicates (TVertexIter first, TVertexIter last, TGetVertexCoordX getX, TGetVertexCoordY getY)
	Find duplicates in given custom point-type range.

template<typename TVertex, typename TAllocator>
void	CDT::RemoveDuplicates (std::vector< TVertex, TAllocator > &vertices, const std::vector< std::size_t > &duplicates)
	Remove duplicates in-place from vector of custom points.

template<typename T>
CDT_EXPORT DuplicatesInfo	CDT::RemoveDuplicates (std::vector< V2d< T > > &vertices)
	Remove duplicated points in-place.

template<typename TEdgeIter, typename TGetEdgeVertexStart, typename TGetEdgeVertexEnd, typename TMakeEdgeFromStartAndEnd>
void	CDT::RemapEdges (TEdgeIter first, TEdgeIter last, const std::vector< std::size_t > &mapping, TGetEdgeVertexStart getStart, TGetEdgeVertexEnd getEnd, TMakeEdgeFromStartAndEnd makeEdge)
	Remap vertex indices in edges (in-place) using given vertex-index mapping.

CDT_EXPORT void	CDT::RemapEdges (std::vector< Edge > &edges, const std::vector< std::size_t > &mapping)
	Remap vertex indices in edges (in-place) using given vertex-index mapping.

template<typename T, typename TVertex, typename TGetVertexCoordX, typename TGetVertexCoordY, typename TVertexAllocator, typename TEdgeIter, typename TGetEdgeVertexStart, typename TGetEdgeVertexEnd, typename TMakeEdgeFromStartAndEnd>
DuplicatesInfo	CDT::RemoveDuplicatesAndRemapEdges (std::vector< TVertex, TVertexAllocator > &vertices, TGetVertexCoordX getX, TGetVertexCoordY getY, TEdgeIter edgesFirst, TEdgeIter edgesLast, TGetEdgeVertexStart getStart, TGetEdgeVertexEnd getEnd, TMakeEdgeFromStartAndEnd makeEdge)
	Find point duplicates, remove them from vector (in-place) and remap edges (in-place)

template<typename T>
CDT_EXPORT DuplicatesInfo	CDT::RemoveDuplicatesAndRemapEdges (std::vector< V2d< T > > &vertices, std::vector< Edge > &edges)
	Same as a chained call of CDT::RemoveDuplicates + CDT::RemapEdges.

CDT_EXPORT EdgeUSet	CDT::extractEdgesFromTriangles (const TriangleVec &triangles)
	Extract all edges of triangles.

CDT_EXPORT unordered_map< Edge, EdgeVec >	CDT::EdgeToPiecesMapping (const unordered_map< Edge, EdgeVec > &pieceToOriginals)

template<typename T>
unordered_map< Edge, std::vector< VertInd > >	CDT::EdgeToSplitVertices (const unordered_map< Edge, EdgeVec > &edgeToPieces, const std::vector< V2d< T > > &vertices)

Detailed Description

Helpers for working with CDT::Triangulation.

Function Documentation

◆ calculateTrianglesByVertex()

CDT_INLINE_IF_HEADER_ONLY VerticesTriangles CDT::calculateTrianglesByVertex	(	const TriangleVec &	triangles,
		VertInd	verticesSize )

Calculate triangles adjacent to vertices (triangles by vertex index)

Parameters

triangles	triangulation
verticesSize	total number of vertices to pre-allocate the output

Returns: triangles by vertex index

Definition at line 20 of file CDT.hpp.

◆ EdgeToPiecesMapping()

CDT_INLINE_IF_HEADER_ONLY unordered_map< Edge, EdgeVec > CDT::EdgeToPiecesMapping ( const unordered_map< Edge, EdgeVec > & pieceToOriginals )

Converts piece->original_edges mapping to original_edge->pieces

Parameters

pieceToOriginals maps pieces to original edges

Returns: mapping of original edges to pieces

Definition at line 88 of file CDT.hpp.

◆ EdgeToSplitVertices()

template<typename T>

unordered_map< Edge, std::vector< VertInd > > CDT::EdgeToSplitVertices	(	const unordered_map< Edge, EdgeVec > &	edgeToPieces,
		const std::vector< V2d< T > > &	vertices )

Convert edge-to-pieces mapping into edge-to-split-vertices mapping

Template Parameters

T	type of vertex coordinates (e.g., float, double)

Parameters

edgeToPieces	edge-to-pieces mapping
vertices	vertex buffer

Returns: mapping of edge-to-split-points. Split points are sorted from edge's start (v1) to end (v2)

Definition at line 384 of file CDT.h.

◆ extractEdgesFromTriangles()

CDT_INLINE_IF_HEADER_ONLY EdgeUSet CDT::extractEdgesFromTriangles ( const TriangleVec & triangles )

Extract all edges of triangles.

Parameters

triangles triangles used to extract edges

Returns: an unordered set of all edges of triangulation

Definition at line 74 of file CDT.hpp.

◆ FindDuplicates()

template<typename T, typename TVertexIter, typename TGetVertexCoordX, typename TGetVertexCoordY>

DuplicatesInfo CDT::FindDuplicates	(	TVertexIter	first,
		TVertexIter	last,
		TGetVertexCoordX	getX,
		TGetVertexCoordY	getY )

Find duplicates in given custom point-type range.

Note: duplicates are points with exactly same X and Y coordinates

Template Parameters

TVertexIter	iterator that dereferences to custom point type
TGetVertexCoordX	function object getting x coordinate from vertex. Getter signature: const TVertexIter::value_type& -> T
TGetVertexCoordY	function object getting y coordinate from vertex. Getter signature: const TVertexIter::value_type& -> T

Parameters

first	beginning of the range of vertices
last	end of the range of vertices
getX	getter of X-coordinate
getY	getter of Y-coordinate

Returns: information about vertex duplicates

Definition at line 293 of file CDT.h.

◆ RemapEdges() [1/2]

CDT_INLINE_IF_HEADER_ONLY void CDT::RemapEdges	(	std::vector< Edge > &	edges,
		const std::vector< std::size_t > &	mapping )

Remap vertex indices in edges (in-place) using given vertex-index mapping.

Note: Mapping can be a result of RemoveDuplicates function

Parameters

[in,out]	edges	collection of edges to remap
	mapping	vertex-index mapping

Definition at line 46 of file CDT.hpp.

◆ RemapEdges() [2/2]

template<typename TEdgeIter, typename TGetEdgeVertexStart, typename TGetEdgeVertexEnd, typename TMakeEdgeFromStartAndEnd>

void CDT::RemapEdges	(	TEdgeIter	first,
		TEdgeIter	last,
		const std::vector< std::size_t > &	mapping,
		TGetEdgeVertexStart	getStart,
		TGetEdgeVertexEnd	getEnd,
		TMakeEdgeFromStartAndEnd	makeEdge )

Remap vertex indices in edges (in-place) using given vertex-index mapping.

Template Parameters

TEdgeIter	iterator that dereferences to custom edge type
TGetEdgeVertexStart	function object getting start vertex index from an edge. Getter signature: const TEdgeIter::value_type& -> CDT::VertInd
TGetEdgeVertexEnd	function object getting end vertex index from an edge. Getter signature: const TEdgeIter::value_type& -> CDT::VertInd
TMakeEdgeFromStartAndEnd	function object that makes new edge from start and end vertices

Parameters

first	beginning of the range of edges
last	end of the range of edges
mapping	vertex-index mapping
getStart	getter of edge start vertex index
getEnd	getter of edge end vertex index
makeEdge	factory for making edge from vetices

Definition at line 340 of file CDT.h.

◆ RemoveDuplicates() [1/2]

template<typename TVertex, typename TAllocator>

void CDT::RemoveDuplicates	(	std::vector< TVertex, TAllocator > &	vertices,
		const std::vector< std::size_t > &	duplicates )

Remove duplicates in-place from vector of custom points.

Template Parameters

TVertex	vertex type
TAllocator	allocator used by input vector of vertices

Parameters

vertices	vertices to remove duplicates from
duplicates	information about duplicates

Definition at line 322 of file CDT.h.

◆ RemoveDuplicates() [2/2]

template<typename T>

CDT_EXPORT DuplicatesInfo CDT::RemoveDuplicates ( std::vector< V2d< T > > & vertices )

Remove duplicated points in-place.

Template Parameters

T	type of vertex coordinates (e.g., float, double)

Parameters

[in,out] vertices collection of vertices to remove duplicates from

Returns: information about duplicated vertices that were removed.

Definition at line 37 of file CDT.hpp.

◆ RemoveDuplicatesAndRemapEdges() [1/2]

template<typename T, typename TVertex, typename TGetVertexCoordX, typename TGetVertexCoordY, typename TVertexAllocator, typename TEdgeIter, typename TGetEdgeVertexStart, typename TGetEdgeVertexEnd, typename TMakeEdgeFromStartAndEnd>

DuplicatesInfo CDT::RemoveDuplicatesAndRemapEdges	(	std::vector< TVertex, TVertexAllocator > &	vertices,
		TGetVertexCoordX	getX,
		TGetVertexCoordY	getY,
		TEdgeIter	edgesFirst,
		TEdgeIter	edgesLast,
		TGetEdgeVertexStart	getStart,
		TGetEdgeVertexEnd	getEnd,
		TMakeEdgeFromStartAndEnd	makeEdge )

Find point duplicates, remove them from vector (in-place) and remap edges (in-place)

Note: Same as a chained call of CDT::FindDuplicates, CDT::RemoveDuplicates, and CDT::RemapEdges

Template Parameters

T	type of vertex coordinates (e.g., float, double)
TVertex	type of vertex
TGetVertexCoordX	function object getting x coordinate from vertex. Getter signature: const TVertexIter::value_type& -> T
TGetVertexCoordY	function object getting y coordinate from vertex. Getter signature: const TVertexIter::value_type& -> T
TEdgeIter	iterator that dereferences to custom edge type
TGetEdgeVertexStart	function object getting start vertex index from an edge. Getter signature: const TEdgeIter::value_type& -> CDT::VertInd
TGetEdgeVertexEnd	function object getting end vertex index from an edge. Getter signature: const TEdgeIter::value_type& -> CDT::VertInd
TMakeEdgeFromStartAndEnd	function object that makes new edge from start and end vertices

Parameters

[in,out]	vertices	vertices to remove duplicates from
[in,out]	edges	collection of edges connecting vertices
	getX	getter of X-coordinate
	getY	getter of Y-coordinate
	edgesFirst	beginning of the range of edges
	edgesLast	end of the range of edges
	getStart	getter of edge start vertex index
	getEnd	getter of edge end vertex index
	makeEdge	factory for making edge from vetices

Returns: information about vertex duplicates

Definition at line 366 of file CDT.h.

◆ RemoveDuplicatesAndRemapEdges() [2/2]

template<typename T>

CDT_EXPORT DuplicatesInfo CDT::RemoveDuplicatesAndRemapEdges	(	std::vector< V2d< T > > &	vertices,
		std::vector< Edge > &	edges )

Same as a chained call of CDT::RemoveDuplicates + CDT::RemapEdges.

Template Parameters

T	type of vertex coordinates (e.g., float, double)

Parameters

[in,out]	vertices	collection of vertices to remove duplicates from
[in,out]	edges	collection of edges to remap

Definition at line 58 of file CDT.hpp.

Classes

Functions

Detailed Description

Function Documentation

◆ calculateTrianglesByVertex()

◆ EdgeToPiecesMapping()

◆ EdgeToSplitVertices()

◆ extractEdgesFromTriangles()

◆ FindDuplicates()

◆ RemapEdges() [1/2]

◆ RemapEdges() [2/2]

◆ RemoveDuplicates() [1/2]

◆ RemoveDuplicates() [2/2]

◆ RemoveDuplicatesAndRemapEdges() [1/2]

◆ RemoveDuplicatesAndRemapEdges() [2/2]