A halfedge data structure for polygonal meshes. More...

#include <pmp/SurfaceMesh.h>

Classes
class	EdgeContainer
	helper class for iterating through all edges using range-based for-loops. More...

class	EdgeIterator
	this class iterates linearly over all edges More...

class	FaceAroundVertexCirculator
	this class circulates through all incident faces of a vertex. More...

class	FaceContainer
	helper class for iterating through all faces using range-based for-loops. More...

class	FaceIterator
	this class iterates linearly over all faces More...

class	HalfedgeAroundFaceCirculator
	this class circulates through all halfedges of a face. More...

class	HalfedgeAroundVertexCirculator
	this class circulates through all outgoing halfedges of a vertex. More...

class	HalfedgeContainer
	helper class for iterating through all halfedges using range-based for-loops. More...

class	HalfedgeIterator
	this class iterates linearly over all halfedges More...

class	VertexAroundFaceCirculator
	this class circulates through the vertices of a face. More...

class	VertexAroundVertexCirculator
	this class circulates through all one-ring neighbors of a vertex. More...

class	VertexContainer
	helper class for iterating through all vertices using range-based for-loops. More...

class	VertexIterator
	An iterator class to iterate linearly over all vertices. More...

Public Member Functions
Construction, destruction, assignment
	SurfaceMesh ()
	default constructor More...

virtual	~SurfaceMesh ()
	destructor More...

	SurfaceMesh (const SurfaceMesh &rhs)
	copy constructor: copies `rhs` to `*this`. More...

SurfaceMesh &	operator= (const SurfaceMesh &rhs)
	assign `rhs` to `*this`. performs a deep copy of all properties. More...

SurfaceMesh &	assign (const SurfaceMesh &rhs)
	assign `rhs` to `*this`. does not copy custom properties. More...

File IO
void	read (const std::string &filename, const IOFlags &flags=IOFlags())
	Read mesh from file `filename` controlled by `flags`. More...

void	write (const std::string &filename, const IOFlags &flags=IOFlags()) const
	Write mesh to file `filename` controlled by `flags`. More...

Add new elements by hand
Vertex	add_vertex (const Point &p)
	add a new vertex with position `p` More...

Face	add_face (const std::vector< Vertex > &vertices)
	Add a new face with vertex list `vertices`. More...

Face	add_triangle (Vertex v0, Vertex v1, Vertex v2)
	add a new triangle connecting vertices `v0`, `v1`, `v2` More...

Face	add_quad (Vertex v0, Vertex v1, Vertex v2, Vertex v3)
	add a new quad connecting vertices `v0`, `v1`, `v2`, `v3` More...

Memory Management
size_t	vertices_size () const

size_t	halfedges_size () const

size_t	edges_size () const

size_t	faces_size () const

size_t	n_vertices () const

size_t	n_halfedges () const

size_t	n_edges () const

size_t	n_faces () const

bool	is_empty () const

virtual void	clear ()
	clear mesh: remove all vertices, edges, faces More...

void	free_memory ()
	remove unused memory from vectors More...

void	reserve (size_t nvertices, size_t nedges, size_t nfaces)
	reserve memory (mainly used in file readers) More...

void	garbage_collection ()
	remove deleted elements More...

bool	is_deleted (Vertex v) const

bool	is_deleted (Halfedge h) const

bool	is_deleted (Edge e) const

bool	is_deleted (Face f) const

bool	is_valid (Vertex v) const

bool	is_valid (Halfedge h) const

bool	is_valid (Edge e) const

bool	is_valid (Face f) const

Low-level connectivity
Halfedge	halfedge (Vertex v) const

void	set_halfedge (Vertex v, Halfedge h)
	set the outgoing halfedge of vertex `v` to `h` More...

bool	is_boundary (Vertex v) const

bool	is_isolated (Vertex v) const

bool	is_manifold (Vertex v) const

Vertex	to_vertex (Halfedge h) const

Vertex	from_vertex (Halfedge h) const

void	set_vertex (Halfedge h, Vertex v)
	sets the vertex the halfedge `h` points to to `v` More...

Face	face (Halfedge h) const

void	set_face (Halfedge h, Face f)
	sets the incident face to halfedge `h` to `f` More...

Halfedge	next_halfedge (Halfedge h) const

void	set_next_halfedge (Halfedge h, Halfedge nh)
	sets the next halfedge of `h` within the face to `nh` More...

void	set_prev_halfedge (Halfedge h, Halfedge ph)
	sets the previous halfedge of `h` and the next halfedge of `ph` to `nh` More...

Halfedge	prev_halfedge (Halfedge h) const

Halfedge	opposite_halfedge (Halfedge h) const

Halfedge	ccw_rotated_halfedge (Halfedge h) const

Halfedge	cw_rotated_halfedge (Halfedge h) const

Edge	edge (Halfedge h) const

bool	is_boundary (Halfedge h) const

Halfedge	halfedge (Edge e, unsigned int i) const

Vertex	vertex (Edge e, unsigned int i) const

Face	face (Edge e, unsigned int i) const

bool	is_boundary (Edge e) const

Halfedge	halfedge (Face f) const

void	set_halfedge (Face f, Halfedge h)
	sets the halfedge of face `f` to `h` More...

bool	is_boundary (Face f) const

Property handling
template<class T >
ObjectProperty< T >	add_object_property (const std::string &name, const T t=T())
	add a object property of type `T` with name `name` and default value `t`. More...

template<class T >
ObjectProperty< T >	get_object_property (const std::string &name) const
	get the object property named `name` of type `T`. More...

template<class T >
ObjectProperty< T >	object_property (const std::string &name, const T t=T())
	if a object property of type `T` with name `name` exists, it is returned. More...

template<class T >
void	remove_object_property (ObjectProperty< T > &p)
	remove the object property `p` More...

const std::type_info &	get_object_property_type (const std::string &name)
	get the type_info `T` of object property named `name`. More...

std::vector< std::string >	object_properties () const

template<class T >
VertexProperty< T >	add_vertex_property (const std::string &name, const T t=T())
	add a vertex property of type `T` with name `name` and default value `t`. More...

template<class T >
VertexProperty< T >	get_vertex_property (const std::string &name) const
	get the vertex property named `name` of type `T`. More...

template<class T >
VertexProperty< T >	vertex_property (const std::string &name, const T t=T())
	if a vertex property of type `T` with name `name` exists, it is returned. More...

template<class T >
void	remove_vertex_property (VertexProperty< T > &p)
	remove the vertex property `p` More...

bool	has_vertex_property (const std::string &name) const
	does the mesh have a vertex property with name `name`? More...

template<class T >
HalfedgeProperty< T >	add_halfedge_property (const std::string &name, const T t=T())
	add a halfedge property of type `T` with name `name` and default value `t`. More...

template<class T >
EdgeProperty< T >	add_edge_property (const std::string &name, const T t=T())
	add a edge property of type `T` with name `name` and default value `t`. More...

template<class T >
HalfedgeProperty< T >	get_halfedge_property (const std::string &name) const
	get the halfedge property named `name` of type `T`. More...

template<class T >
EdgeProperty< T >	get_edge_property (const std::string &name) const
	get the edge property named `name` of type `T`. More...

template<class T >
HalfedgeProperty< T >	halfedge_property (const std::string &name, const T t=T())
	if a halfedge property of type `T` with name `name` exists, it is returned. More...

template<class T >
EdgeProperty< T >	edge_property (const std::string &name, const T t=T())
	if an edge property of type `T` with name `name` exists, it is returned. More...

template<class T >
void	remove_halfedge_property (HalfedgeProperty< T > &p)
	remove the halfedge property `p` More...

bool	has_halfedge_property (const std::string &name) const
	does the mesh have a halfedge property with name `name`? More...

template<class T >
void	remove_edge_property (EdgeProperty< T > &p)
	remove the edge property `p` More...

bool	has_edge_property (const std::string &name) const
	does the mesh have an edge property with name `name`? More...

const std::type_info &	get_halfedge_property_type (const std::string &name)
	get the type_info `T` of halfedge property named `name`. More...

const std::type_info &	get_vertex_property_type (const std::string &name)
	get the type_info `T` of vertex property named `name`. More...

const std::type_info &	get_edge_property_type (const std::string &name)
	get the type_info `T` of edge property named `name`. More...

std::vector< std::string >	vertex_properties () const

std::vector< std::string >	halfedge_properties () const

std::vector< std::string >	edge_properties () const

template<class T >
FaceProperty< T >	add_face_property (const std::string &name, const T t=T())
	add a face property of type `T` with name `name` and default value `t`. More...

template<class T >
FaceProperty< T >	get_face_property (const std::string &name) const
	get the face property named `name` of type `T`. More...

template<class T >
FaceProperty< T >	face_property (const std::string &name, const T t=T())
	if a face property of type `T` with name `name` exists, it is returned. More...

template<class T >
void	remove_face_property (FaceProperty< T > &p)
	remove the face property `p` More...

bool	has_face_property (const std::string &name) const
	does the mesh have a face property with name `name`? More...

const std::type_info &	get_face_property_type (const std::string &name)
	get the type_info `T` of face property named `name` . More...

std::vector< std::string >	face_properties () const

void	property_stats () const
	prints the names of all properties More...

Iterators and circulators
VertexIterator	vertices_begin () const

VertexIterator	vertices_end () const

VertexContainer	vertices () const

HalfedgeIterator	halfedges_begin () const

HalfedgeIterator	halfedges_end () const

HalfedgeContainer	halfedges () const

EdgeIterator	edges_begin () const

EdgeIterator	edges_end () const

EdgeContainer	edges () const

VertexAroundVertexCirculator	vertices (Vertex v) const

HalfedgeAroundVertexCirculator	halfedges (Vertex v) const

FaceIterator	faces_begin () const

FaceIterator	faces_end () const

FaceContainer	faces () const

FaceAroundVertexCirculator	faces (Vertex v) const

VertexAroundFaceCirculator	vertices (Face f) const

HalfedgeAroundFaceCirculator	halfedges (Face f) const

Higher-level Topological Operations
Halfedge	insert_vertex (Edge e, const Point &p)
	Subdivide the edge `e` = (v0,v1) by splitting it into the two edge (v0,p) and (p,v1). More...

Halfedge	insert_vertex (Edge e, Vertex v)
	Subdivide the edge `e` = (v0,v1) by splitting it into the two edge (v0,v) and (v,v1). More...

Halfedge	insert_vertex (Halfedge h0, Vertex v)
	Subdivide the halfedge `h` = (v0,v1) by splitting it into the two halfedges (v0,v) and (v,v1). More...

Halfedge	find_halfedge (Vertex start, Vertex end) const
	find the halfedge from start to end More...

Edge	find_edge (Vertex a, Vertex b) const
	find the edge (a,b) More...

bool	is_triangle_mesh () const

bool	is_quad_mesh () const

bool	is_collapse_ok (Halfedge v0v1)

void	collapse (Halfedge h)
	Collapse the halfedge `h` by moving its start vertex into its target vertex. More...

bool	is_removal_ok (Edge e)

bool	remove_edge (Edge e)
	Remove edge and merge its two incident faces into one. More...

Vertex	split (Face f, const Point &p)
	Split the face `f` by first adding point `p` to the mesh and then inserting edges between `p` and the vertices of `f`. More...

void	split (Face f, Vertex v)
	Split the face `f` by inserting edges between `v` and the vertices of `f`. More...

Halfedge	split (Edge e, const Point &p)
	Split the edge `e` by first adding point `p` to the mesh and then connecting it to the two vertices of the adjacent triangles that are opposite to edge `e`. More...

Halfedge	split (Edge e, Vertex v)
	Split the edge `e` by connecting vertex `v` it to the two vertices of the adjacent triangles that are opposite to edge `e`. More...

Halfedge	insert_edge (Halfedge h0, Halfedge h1)
	insert edge between the to-vertices v0 of `h0` and v1 of `h1`. More...

bool	is_flip_ok (Edge e) const
	Check whether flipping edge `e` is topologically. More...

void	flip (Edge e)
	Flip the edge `e` . More...

size_t	valence (Vertex v) const

size_t	valence (Face f) const

void	delete_vertex (Vertex v)
	deletes the vertex `v` from the mesh More...

void	delete_edge (Edge e)
	deletes the edge `e` from the mesh More...

void	delete_face (Face f)
	deletes the face `f` from the mesh More...

Geometry-related Functions
const Point &	position (Vertex v) const
	position of a vertex (read only) More...

Point &	position (Vertex v)
	position of a vertex More...

std::vector< Point > &	positions ()

BoundingBox	bounds () const
	compute the bounding box of the object More...

Scalar	edge_length (Edge e) const
	compute the length of edge `e`. More...

Allocate new elements
Vertex	new_vertex ()
	Allocate a new vertex, resize vertex properties accordingly. More...

Halfedge	new_edge ()
	Allocate a new edge, resize edge and halfedge properties accordingly. More...

Halfedge	new_edge (Vertex start, Vertex end)
	Allocate a new edge, resize edge and halfedge properties accordingly. More...

Face	new_face ()
	Allocate a new face, resize face properties accordingly. More...

Detailed Description

A halfedge data structure for polygonal meshes.

Constructor & Destructor Documentation

◆ SurfaceMesh() [1/2]

SurfaceMesh ( )

default constructor

◆ ~SurfaceMesh()

~SurfaceMesh ( )

virtualdefault

destructor

◆ SurfaceMesh() [2/2]

SurfaceMesh ( const SurfaceMesh & rhs )

inline

copy constructor: copies rhs to *this.

performs a deep copy of all properties.

Member Function Documentation

◆ add_edge_property()

EdgeProperty< T > add_edge_property	(	const std::string &	name,
		const T	t = `T()`
	)

inline

add a edge property of type T with name name and default value t.

fails if a property named name exists already, since the name has to be unique. in this case it returns an invalid property.

◆ add_face()

Face add_face ( const std::vector< Vertex > & vertices )

Add a new face with vertex list vertices.

Exceptions

TopologyException in case a topological error occurs.

See also: add_triangle, add_quad

◆ add_face_property()

FaceProperty< T > add_face_property	(	const std::string &	name,
		const T	t = `T()`
	)

inline

add a face property of type T with name name and default value t.

fails if a property named name exists already, since the name has to be unique. in this case it returns an invalid property

◆ add_halfedge_property()

HalfedgeProperty< T > add_halfedge_property	(	const std::string &	name,
		const T	t = `T()`
	)

inline

add a halfedge property of type T with name name and default value t.

fails if a property named name exists already, since the name has to be unique. in this case it returns an invalid property.

◆ add_object_property()

ObjectProperty< T > add_object_property	(	const std::string &	name,
		const T	t = `T()`
	)

inline

add a object property of type T with name name and default value t.

fails if a property named name exists already, since the name has to be unique. in this case it returns an invalid property

◆ add_quad()

Face add_quad	(	Vertex	v0,
		Vertex	v1,
		Vertex	v2,
		Vertex	v3
	)

add a new quad connecting vertices v0, v1, v2, v3

See also: add_triangle, add_face

◆ add_triangle()

Face add_triangle	(	Vertex	v0,
		Vertex	v1,
		Vertex	v2
	)

add a new triangle connecting vertices v0, v1, v2

See also: add_face, add_quad

◆ add_vertex()

Vertex add_vertex ( const Point & p )

add a new vertex with position p

◆ add_vertex_property()

VertexProperty< T > add_vertex_property	(	const std::string &	name,
		const T	t = `T()`
	)

inline

add a vertex property of type T with name name and default value t.

fails if a property named name exists already, since the name has to be unique. in this case it returns an invalid property

◆ assign()

SurfaceMesh & assign ( const SurfaceMesh & rhs )

assign rhs to *this. does not copy custom properties.

◆ bounds()

BoundingBox bounds ( ) const

inline

compute the bounding box of the object

◆ ccw_rotated_halfedge()

Halfedge ccw_rotated_halfedge ( Halfedge h ) const

inline

Returns: the halfedge that is rotated counter-clockwise around the start vertex of h. it is the opposite halfedge of the previous halfedge of h.

◆ clear()

void clear ( )

virtual

clear mesh: remove all vertices, edges, faces

Reimplemented in SurfaceMeshGL.

◆ collapse()

void collapse ( Halfedge h )

Collapse the halfedge h by moving its start vertex into its target vertex.

For non-boundary halfedges this function removes one vertex, three edges, and two faces. For boundary halfedges it removes one vertex, two edges and one face.

Attention: This function is only valid for triangle meshes.; Halfedge collapses might lead to invalid faces. Call is_collapse_ok(Halfedge) to be sure the collapse is legal.; The removed items are only marked as deleted. You have to call garbage_collection() to finally remove them.

◆ cw_rotated_halfedge()

Halfedge cw_rotated_halfedge ( Halfedge h ) const

inline

Returns: the halfedge that is rotated clockwise around the start vertex of h. it is the next halfedge of the opposite halfedge of h.

◆ delete_edge()

void delete_edge ( Edge e )

deletes the edge e from the mesh

◆ delete_face()

void delete_face ( Face f )

deletes the face f from the mesh

◆ delete_vertex()

void delete_vertex ( Vertex v )

deletes the vertex v from the mesh

◆ edge()

Edge edge ( Halfedge h ) const

inline

Returns: the edge that contains halfedge h as one of its two halfedges.

◆ edge_length()

Scalar edge_length ( Edge e ) const

inline

compute the length of edge e.

◆ edge_properties()

std::vector< std::string > edge_properties ( ) const

inline

Returns: the names of all edge properties

◆ edge_property()

EdgeProperty< T > edge_property	(	const std::string &	name,
		const T	t = `T()`
	)

inline

if an edge property of type T with name name exists, it is returned.

otherwise this property is added (with default value t)

◆ edges()

EdgeContainer edges ( ) const

inline

Returns: edge container for C++11 range-based for-loops

◆ edges_begin()

EdgeIterator edges_begin ( ) const

inline

Returns: start iterator for edges

◆ edges_end()

EdgeIterator edges_end ( ) const

inline

Returns: end iterator for edges

◆ edges_size()

size_t edges_size ( ) const

inline

Returns: number of (deleted and valid) edges in the mesh

◆ face() [1/2]

Face face	(	Edge	e,
		unsigned int	i
	)		const

inline

Returns: the face incident to the i'th halfedge of edge e. i has to be 0 or 1.

◆ face() [2/2]

Face face ( Halfedge h ) const

inline

Returns: the face incident to halfedge h

◆ face_properties()

std::vector< std::string > face_properties ( ) const

inline

Returns: the names of all face properties

◆ face_property()

FaceProperty< T > face_property	(	const std::string &	name,
		const T	t = `T()`
	)

inline

if a face property of type T with name name exists, it is returned.

otherwise this property is added (with default value t)

◆ faces() [1/2]

FaceContainer faces ( ) const

inline

Returns: face container for C++11 range-based for-loops

◆ faces() [2/2]

FaceAroundVertexCirculator faces ( Vertex v ) const

inline

Returns: circulator for faces around vertex v

◆ faces_begin()

FaceIterator faces_begin ( ) const

inline

Returns: start iterator for faces

◆ faces_end()

FaceIterator faces_end ( ) const

inline

Returns: end iterator for faces

◆ faces_size()

size_t faces_size ( ) const

inline

Returns: number of (deleted and valid) faces in the mesh

◆ find_edge()

Edge find_edge	(	Vertex	a,
		Vertex	b
	)		const

find the edge (a,b)

◆ find_halfedge()

Halfedge find_halfedge	(	Vertex	start,
		Vertex	end
	)		const

find the halfedge from start to end

◆ flip()

void flip ( Edge e )

Flip the edge e .

Removes the edge e and add an edge between the two vertices opposite to edge e of the two incident triangles.

Attention: This function is only valid for triangle meshes.; Flipping an edge may result in a non-manifold mesh, hence check for yourself whether this operation is allowed or not!

See also: is_flip_ok()

◆ free_memory()

void free_memory ( )

remove unused memory from vectors

◆ from_vertex()

Vertex from_vertex ( Halfedge h ) const

inline

Returns: the vertex the halfedge h emanates from

◆ garbage_collection()

void garbage_collection ( )

remove deleted elements

◆ get_edge_property()

EdgeProperty< T > get_edge_property ( const std::string & name ) const

inline

get the edge property named name of type T.

returns an invalid VertexProperty if the property does not exist or if the type does not match.

◆ get_edge_property_type()

const std::type_info & get_edge_property_type ( const std::string & name )

inline

get the type_info T of edge property named name.

returns an typeid(void) if the property does not exist or if the type does not match.

◆ get_face_property()

FaceProperty< T > get_face_property ( const std::string & name ) const

inline

get the face property named name of type T.

returns an invalid VertexProperty if the property does not exist or if the type does not match.

◆ get_face_property_type()

const std::type_info & get_face_property_type ( const std::string & name )

inline

get the type_info T of face property named name .

returns an typeid(void) if the property does not exist or if the type does not match.

◆ get_halfedge_property()

HalfedgeProperty< T > get_halfedge_property ( const std::string & name ) const

inline

get the halfedge property named name of type T.

returns an invalid VertexProperty if the property does not exist or if the type does not match.

◆ get_halfedge_property_type()

const std::type_info & get_halfedge_property_type ( const std::string & name )

inline

get the type_info T of halfedge property named name.

returns an typeid(void) if the property does not exist or if the type does not match.

◆ get_object_property()

ObjectProperty< T > get_object_property ( const std::string & name ) const

inline

get the object property named name of type T.

returns an invalid ObjectProperty if the property does not exist or if the type does not match.

◆ get_object_property_type()

const std::type_info & get_object_property_type ( const std::string & name )

inline

get the type_info T of object property named name.

returns an typeid(void) if the property does not exist or if the type does not match.

◆ get_vertex_property()

VertexProperty< T > get_vertex_property ( const std::string & name ) const

inline

get the vertex property named name of type T.

returns an invalid VertexProperty if the property does not exist or if the type does not match.

◆ get_vertex_property_type()

const std::type_info & get_vertex_property_type ( const std::string & name )

inline

get the type_info T of vertex property named name.

returns an typeid(void) if the property does not exist or if the type does not match.

◆ halfedge() [1/3]

Halfedge halfedge	(	Edge	e,
		unsigned int	i
	)		const

inline

Returns: the i'th halfedge of edge e. i has to be 0 or 1.

◆ halfedge() [2/3]

Halfedge halfedge ( Face f ) const

inline

Returns: a halfedge of face f

◆ halfedge() [3/3]

Halfedge halfedge ( Vertex v ) const

inline

Returns: an outgoing halfedge of vertex v. if v is a boundary vertex this will be a boundary halfedge.

◆ halfedge_properties()

std::vector< std::string > halfedge_properties ( ) const

inline

Returns: the names of all halfedge properties

◆ halfedge_property()

HalfedgeProperty< T > halfedge_property	(	const std::string &	name,
		const T	t = `T()`
	)

inline

if a halfedge property of type T with name name exists, it is returned.

otherwise this property is added (with default value t)

◆ halfedges() [1/3]

HalfedgeContainer halfedges ( ) const

inline

Returns: halfedge container for C++11 range-based for-loops

◆ halfedges() [2/3]

HalfedgeAroundFaceCirculator halfedges ( Face f ) const

inline

Returns: circulator for halfedges of face f

◆ halfedges() [3/3]

HalfedgeAroundVertexCirculator halfedges ( Vertex v ) const

inline

Returns: circulator for outgoing halfedges around vertex v

◆ halfedges_begin()

HalfedgeIterator halfedges_begin ( ) const

inline

Returns: start iterator for halfedges

◆ halfedges_end()

HalfedgeIterator halfedges_end ( ) const

inline

Returns: end iterator for halfedges

◆ halfedges_size()

size_t halfedges_size ( ) const

inline

Returns: number of (deleted and valid) halfedges in the mesh

◆ has_edge_property()

bool has_edge_property ( const std::string & name ) const

inline

does the mesh have an edge property with name name?

◆ has_face_property()

bool has_face_property ( const std::string & name ) const

inline

does the mesh have a face property with name name?

◆ has_halfedge_property()

bool has_halfedge_property ( const std::string & name ) const

inline

does the mesh have a halfedge property with name name?

◆ has_vertex_property()

bool has_vertex_property ( const std::string & name ) const

inline

does the mesh have a vertex property with name name?

◆ insert_edge()

Halfedge insert_edge	(	Halfedge	h0,
		Halfedge	h1
	)

insert edge between the to-vertices v0 of h0 and v1 of h1.

Returns: the new halfedge from v0 to v1.

Attention: h0 and h1 have to belong to the same face

◆ insert_vertex() [1/3]

Halfedge insert_vertex	(	Edge	e,
		const Point &	p
	)

inline

Subdivide the edge e = (v0,v1) by splitting it into the two edge (v0,p) and (p,v1).

Note that this function does not introduce any other edge or faces. It simply splits the edge. Returns halfedge that points to p.

See also: insert_vertex(Edge, Vertex); insert_vertex(Halfedge, Vertex)

◆ insert_vertex() [2/3]

Halfedge insert_vertex	(	Edge	e,
		Vertex	v
	)

inline

Subdivide the edge e = (v0,v1) by splitting it into the two edge (v0,v) and (v,v1).

Note that this function does not introduce any other edge or faces. It simply splits the edge. Returns halfedge that points to p.

See also: insert_vertex(Edge, Point); insert_vertex(Halfedge, Vertex)

◆ insert_vertex() [3/3]

Halfedge insert_vertex	(	Halfedge	h0,
		Vertex	v
	)

Subdivide the halfedge h = (v0,v1) by splitting it into the two halfedges (v0,v) and (v,v1).

Note that this function does not introduce any other edge or faces. It simply splits the edge. Returns the halfedge that points from v1 to v.

See also: insert_vertex(Edge, Point); insert_vertex(Edge, Vertex)

◆ is_boundary() [1/4]

bool is_boundary ( Edge e ) const

inline

Returns: whether e is a boundary edge, i.e., if one of its halfedges is a boundary halfedge.

◆ is_boundary() [2/4]

bool is_boundary ( Face f ) const

inline

Returns: whether f is a boundary face, i.e., it one of its edges is a boundary edge.

◆ is_boundary() [3/4]

bool is_boundary ( Halfedge h ) const

inline

Returns: whether h is a boundary halfedge, i.e., if its face does not exist.

◆ is_boundary() [4/4]

bool is_boundary ( Vertex v ) const

inline

Returns: whether v is a boundary vertex

◆ is_collapse_ok()

bool is_collapse_ok ( Halfedge v0v1 )

Returns: whether collapsing the halfedge v0v1 is topologically legal.

Attention: This function is only valid for triangle meshes.

◆ is_deleted() [1/4]

bool is_deleted ( Edge e ) const

inline

Returns: whether edge e is deleted

See also: garbage_collection()

◆ is_deleted() [2/4]

bool is_deleted ( Face f ) const

inline

Returns: whether face f is deleted

See also: garbage_collection()

◆ is_deleted() [3/4]

bool is_deleted ( Halfedge h ) const

inline

Returns: whether halfedge h is deleted

See also: garbage_collection()

◆ is_deleted() [4/4]

bool is_deleted ( Vertex v ) const

inline

Returns: whether vertex v is deleted

See also: garbage_collection()

◆ is_empty()

bool is_empty ( ) const

inline

Returns: true if the mesh is empty, i.e., has no vertices

◆ is_flip_ok()

bool is_flip_ok ( Edge e ) const

Check whether flipping edge e is topologically.

Attention: This function is only valid for triangle meshes.

See also: flip(Edge)

◆ is_isolated()

bool is_isolated ( Vertex v ) const

inline

Returns: whether v is isolated, i.e., not incident to any edge

◆ is_manifold()

bool is_manifold ( Vertex v ) const

inline

Returns: whether v is a manifold vertex (not incident to several patches)

◆ is_quad_mesh()

bool is_quad_mesh ( ) const

Returns: whether the mesh a quad mesh. this function simply tests each face, and therefore is not very efficient.

◆ is_removal_ok()

bool is_removal_ok ( Edge e )

Returns: whether removing the edge e is topologically legal.

◆ is_triangle_mesh()

bool is_triangle_mesh ( ) const

Returns: whether the mesh a triangle mesh. this function simply tests each face, and therefore is not very efficient.

◆ is_valid() [1/4]

bool is_valid ( Edge e ) const

inline

Returns: whether edge e is valid.

◆ is_valid() [2/4]

bool is_valid ( Face f ) const

inline

Returns: whether the face f is valid.

◆ is_valid() [3/4]

bool is_valid ( Halfedge h ) const

inline

Returns: whether halfedge h is valid.

◆ is_valid() [4/4]

bool is_valid ( Vertex v ) const

inline

Returns: whether vertex v is valid.

◆ n_edges()

size_t n_edges ( ) const

inline

Returns: number of edges in the mesh

◆ n_faces()

size_t n_faces ( ) const

inline

Returns: number of faces in the mesh

◆ n_halfedges()

size_t n_halfedges ( ) const

inline

Returns: number of halfedge in the mesh

◆ n_vertices()

size_t n_vertices ( ) const

inline

Returns: number of vertices in the mesh

◆ new_edge() [1/2]

Halfedge new_edge ( )

inline

Allocate a new edge, resize edge and halfedge properties accordingly.

Exceptions

AllocationException in case of failure to allocate a new edge.

◆ new_edge() [2/2]

Halfedge new_edge	(	Vertex	start,
		Vertex	end
	)

inline

Allocate a new edge, resize edge and halfedge properties accordingly.

Exceptions

AllocationException in case of failure to allocate a new edge.

Parameters

start	starting Vertex of the new edge
end	end Vertex of the new edge

◆ new_face()

Face new_face ( )

inline

Allocate a new face, resize face properties accordingly.

Exceptions

AllocationException in case of failure to allocate a new face.

◆ new_vertex()

Vertex new_vertex ( )

inline

Allocate a new vertex, resize vertex properties accordingly.

Exceptions

AllocationException in case of failure to allocate a new vertex.

◆ next_halfedge()

Halfedge next_halfedge ( Halfedge h ) const

inline

Returns: the next halfedge within the incident face

◆ object_properties()

std::vector< std::string > object_properties ( ) const

inline

Returns: the names of all object properties

◆ object_property()

ObjectProperty< T > object_property	(	const std::string &	name,
		const T	t = `T()`
	)

inline

if a object property of type T with name name exists, it is returned.

otherwise this property is added (with default value t)

◆ operator=()

SurfaceMesh & operator= ( const SurfaceMesh & rhs )

assign rhs to *this. performs a deep copy of all properties.

◆ opposite_halfedge()

Halfedge opposite_halfedge ( Halfedge h ) const

inline

Returns: the opposite halfedge of h

◆ position() [1/2]

Point & position ( Vertex v )

inline

position of a vertex

◆ position() [2/2]

const Point & position ( Vertex v ) const

inline

position of a vertex (read only)

◆ positions()

std::vector< Point > & positions ( )

inline

Returns: vector of point positions

◆ prev_halfedge()

Halfedge prev_halfedge ( Halfedge h ) const

inline

Returns: the previous halfedge within the incident face

◆ property_stats()

void property_stats ( ) const

prints the names of all properties

◆ read()

void read	(	const std::string &	filename,
		const IOFlags &	flags = `IOFlags()`
	)

Read mesh from file filename controlled by flags.

File extension determines file type. Supported formats and vertex attributes (a=ASCII, b=binary):

Format	ASCII	Binary	Normals	Colors	Texcoords
OFF	yes	yes	a / b	a	a / b
OBJ	yes	no	a	no	no
STL	yes	yes	no	no	no
PLY	yes	yes	no	no	no
PMP	no	yes	no	no	no
XYZ	yes	no	a	no	no
AGI	yes	no	a	a	no

In addition, the OBJ and PMP formats support reading per-halfedge texture coordinates.

◆ remove_edge()

bool remove_edge ( Edge e )

Remove edge and merge its two incident faces into one.

This operation requires that the edge has two incident faces and that these two are not equal.

See also: is_removal_ok(Edge)

◆ remove_edge_property()

void remove_edge_property ( EdgeProperty< T > & p )

inline

remove the edge property p

◆ remove_face_property()

void remove_face_property ( FaceProperty< T > & p )

inline

remove the face property p

◆ remove_halfedge_property()

void remove_halfedge_property ( HalfedgeProperty< T > & p )

inline

remove the halfedge property p

◆ remove_object_property()

void remove_object_property ( ObjectProperty< T > & p )

inline

remove the object property p

◆ remove_vertex_property()

void remove_vertex_property ( VertexProperty< T > & p )

inline

remove the vertex property p

◆ reserve()

void reserve	(	size_t	nvertices,
		size_t	nedges,
		size_t	nfaces
	)

reserve memory (mainly used in file readers)

◆ set_face()

void set_face	(	Halfedge	h,
		Face	f
	)

inline

sets the incident face to halfedge h to f

◆ set_halfedge() [1/2]

void set_halfedge	(	Face	f,
		Halfedge	h
	)

inline

sets the halfedge of face f to h

◆ set_halfedge() [2/2]

void set_halfedge	(	Vertex	v,
		Halfedge	h
	)

inline

set the outgoing halfedge of vertex v to h

◆ set_next_halfedge()

void set_next_halfedge	(	Halfedge	h,
		Halfedge	nh
	)

inline

sets the next halfedge of h within the face to nh

◆ set_prev_halfedge()

void set_prev_halfedge	(	Halfedge	h,
		Halfedge	ph
	)

inline

sets the previous halfedge of h and the next halfedge of ph to nh

◆ set_vertex()

void set_vertex	(	Halfedge	h,
		Vertex	v
	)

inline

sets the vertex the halfedge h points to to v

◆ split() [1/4]

Halfedge split	(	Edge	e,
		const Point &	p
	)

inline

Split the edge e by first adding point p to the mesh and then connecting it to the two vertices of the adjacent triangles that are opposite to edge e.

Returns the halfedge pointing to p that is created by splitting the existing edge e.

Attention: This function is only valid for triangle meshes.

See also: split(Edge, Vertex)

◆ split() [2/4]

Halfedge split	(	Edge	e,
		Vertex	v
	)

Split the edge e by connecting vertex v it to the two vertices of the adjacent triangles that are opposite to edge e.

Returns the halfedge pointing to v that is created by splitting the existing edge e.

Attention: This function is only valid for triangle meshes.

See also: split(Edge, Point)

◆ split() [3/4]

Vertex split	(	Face	f,
		const Point &	p
	)

inline

Split the face f by first adding point p to the mesh and then inserting edges between p and the vertices of f.

For a triangle this is a standard one-to-three split.

See also: split(Face, Vertex)

◆ split() [4/4]

void split	(	Face	f,
		Vertex	v
	)

Split the face f by inserting edges between v and the vertices of f.

For a triangle this is a standard one-to-three split.

See also: split(Face, const Point&)

◆ to_vertex()

Vertex to_vertex ( Halfedge h ) const

inline

Returns: the vertex the halfedge h points to

◆ valence() [1/2]

size_t valence ( Face f ) const

Returns: the valence of face f (its number of vertices)

◆ valence() [2/2]

size_t valence ( Vertex v ) const

Returns: the valence (number of incident edges or neighboring vertices) of vertex v.

◆ vertex()

Vertex vertex	(	Edge	e,
		unsigned int	i
	)		const

inline

Returns: the i'th vertex of edge e. i has to be 0 or 1.

◆ vertex_properties()

std::vector< std::string > vertex_properties ( ) const

inline

Returns: the names of all vertex properties

◆ vertex_property()

VertexProperty< T > vertex_property	(	const std::string &	name,
		const T	t = `T()`
	)

inline

if a vertex property of type T with name name exists, it is returned.

otherwise this property is added (with default value t)

◆ vertices() [1/3]

VertexContainer vertices ( ) const

inline

Returns: vertex container for C++11 range-based for-loops

◆ vertices() [2/3]

VertexAroundFaceCirculator vertices ( Face f ) const

inline

Returns: circulator for vertices of face f

◆ vertices() [3/3]

VertexAroundVertexCirculator vertices ( Vertex v ) const

inline

Returns: circulator for vertices around vertex v

◆ vertices_begin()

VertexIterator vertices_begin ( ) const

inline

Returns: start iterator for vertices

◆ vertices_end()

VertexIterator vertices_end ( ) const

inline

Returns: end iterator for vertices

◆ vertices_size()

size_t vertices_size ( ) const

inline

Returns: number of (deleted and valid) vertices in the mesh

◆ write()

void write	(	const std::string &	filename,
		const IOFlags &	flags = `IOFlags()`
	)		const

Write mesh to file filename controlled by flags.

File extension determines file type. Supported formats and vertex attributes (a=ASCII, b=binary):

Format	ASCII	Binary	Normals	Colors	Texcoords
OFF	yes	yes	a	a	a
OBJ	yes	no	a	no	no
STL	yes	no	no	no	no
PLY	yes	yes	no	no	no
PMP	no	yes	no	no	no
XYZ	yes	no	a	no	no

In addition, the OBJ and PMP formats support writing per-halfedge texture coordinates.

Format	ASCII	Binary	Normals	Colors	Texcoords
OFF	yes	yes	a	a	a
OBJ	yes	no	a	no	no
STL	yes	no	no	no	no
PLY	yes	yes	no	no	no
PMP	no	yes	no	no	no
XYZ	yes	no	a	no	no

Format	ASCII	Binary	Normals	Colors	Texcoords
OFF	yes	yes	a	a	a
OBJ	yes	no	a	no	no
STL	yes	no	no	no	no
PLY	yes	yes	no	no	no
PMP	no	yes	no	no	no
XYZ	yes	no	a	no	no

Classes

Public Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ SurfaceMesh() [1/2]

◆ ~SurfaceMesh()

◆ SurfaceMesh() [2/2]

Member Function Documentation

◆ add_edge_property()

◆ add_face()

◆ add_face_property()

◆ add_halfedge_property()

◆ add_object_property()

◆ add_quad()

◆ add_triangle()

◆ add_vertex()

◆ add_vertex_property()

◆ assign()

◆ bounds()

◆ ccw_rotated_halfedge()

◆ clear()

◆ collapse()

◆ cw_rotated_halfedge()

◆ delete_edge()

◆ delete_face()

◆ delete_vertex()

◆ edge()

◆ edge_length()

◆ edge_properties()

◆ edge_property()

◆ edges()

◆ edges_begin()

◆ edges_end()

◆ edges_size()

◆ face() [1/2]

◆ face() [2/2]

◆ face_properties()

◆ face_property()

◆ faces() [1/2]

◆ faces() [2/2]

◆ faces_begin()

◆ faces_end()

◆ faces_size()

◆ find_edge()

◆ find_halfedge()

◆ flip()

◆ free_memory()

◆ from_vertex()

◆ garbage_collection()

◆ get_edge_property()

◆ get_edge_property_type()

◆ get_face_property()

◆ get_face_property_type()

◆ get_halfedge_property()

◆ get_halfedge_property_type()

◆ get_object_property()

◆ get_object_property_type()

◆ get_vertex_property()

◆ get_vertex_property_type()

◆ halfedge() [1/3]

◆ halfedge() [2/3]

◆ halfedge() [3/3]

◆ halfedge_properties()

◆ halfedge_property()

◆ halfedges() [1/3]

◆ halfedges() [2/3]

◆ halfedges() [3/3]

◆ halfedges_begin()

◆ halfedges_end()

◆ halfedges_size()

◆ has_edge_property()

◆ has_face_property()

◆ has_halfedge_property()

◆ has_vertex_property()

◆ insert_edge()

◆ insert_vertex() [1/3]

◆ insert_vertex() [2/3]

◆ insert_vertex() [3/3]

◆ is_boundary() [1/4]

◆ is_boundary() [2/4]

Format	ASCII	Binary	Normals	Colors	Texcoords
OFF	yes	yes	a	a	a
OBJ	yes	no	a	no	no
STL	yes	no	no	no	no
PLY	yes	yes	no	no	no
PMP	no	yes	no	no	no
XYZ	yes	no	a	no	no