HalfEdgeTriangleMesh inherits TriangleMesh class with the addition of HalfEdge data structure for each half edge in the mesh as well as related functions. More...

#include <HalfEdgeTriangleMesh.h>

Inheritance diagram for open3d::geometry::HalfEdgeTriangleMesh:

Data Structures
class	HalfEdge
	HalfEdge class contains vertex, triangle info about a half edge, as well as relations of next and twin half edge. More...

Public Member Functions
	HalfEdgeTriangleMesh ()
	Default Constructor. More...

virtual HalfEdgeTriangleMesh &	Clear () override
	Clear all elements in the geometry. More...

bool	HasHalfEdges () const
	Returns `true` if half-edges have already been computed. More...

std::vector< int >	BoundaryHalfEdgesFromVertex (int vertex_index) const

std::vector< int >	BoundaryVerticesFromVertex (int vertex_index) const

std::vector< std::vector< int > >	GetBoundaries () const
	Returns a vector of boundaries. A boundary is a vector of vertices. More...

HalfEdgeTriangleMesh &	operator+= (const HalfEdgeTriangleMesh &mesh)

HalfEdgeTriangleMesh	operator+ (const HalfEdgeTriangleMesh &mesh) const

Public Member Functions inherited from open3d::geometry::MeshBase
	MeshBase ()
	Default Constructor. More...

	~MeshBase () override

virtual bool	IsEmpty () const override
	Returns `true` iff the geometry is empty. More...

virtual Eigen::Vector3d	GetMinBound () const override
	Returns min bounds for geometry coordinates. More...

virtual Eigen::Vector3d	GetMaxBound () const override
	Returns max bounds for geometry coordinates. More...

virtual Eigen::Vector3d	GetCenter () const override
	Returns the center of the geometry coordinates. More...

virtual AxisAlignedBoundingBox	GetAxisAlignedBoundingBox () const override

virtual OrientedBoundingBox	GetOrientedBoundingBox (bool robust=false) const override

virtual OrientedBoundingBox	GetMinimalOrientedBoundingBox (bool robust=false) const override

virtual MeshBase &	Transform (const Eigen::Matrix4d &transformation) override
	Apply transformation (4x4 matrix) to the geometry coordinates. More...

virtual MeshBase &	Translate (const Eigen::Vector3d &translation, bool relative=true) override
	Apply translation to the geometry coordinates. More...

virtual MeshBase &	Scale (const double scale, const Eigen::Vector3d &center) override
	Apply scaling to the geometry coordinates. Given a scaling factor \(s\), and center \(c\), a given point \(p\) is transformed according to \(s (p - c) + c\). More...

virtual MeshBase &	Rotate (const Eigen::Matrix3d &R, const Eigen::Vector3d &center) override
	Apply rotation to the geometry coordinates and normals. Given a rotation matrix \(R\), and center \(c\), a given point \(p\) is transformed according to \(R (p - c) + c\). More...

MeshBase &	operator+= (const MeshBase &mesh)

MeshBase	operator+ (const MeshBase &mesh) const

bool	HasVertices () const
	Returns `True` if the mesh contains vertices. More...

bool	HasVertexNormals () const
	Returns `True` if the mesh contains vertex normals. More...

bool	HasVertexColors () const
	Returns `True` if the mesh contains vertex colors. More...

MeshBase &	NormalizeNormals ()
	Normalize vertex normals to length 1. More...

MeshBase &	PaintUniformColor (const Eigen::Vector3d &color)
	Assigns each vertex in the TriangleMesh the same color. More...

std::tuple< std::shared_ptr< TriangleMesh >, std::vector< size_t > >	ComputeConvexHull () const
	Function that computes the convex hull of the triangle mesh using qhull. More...

Public Member Functions inherited from open3d::geometry::Geometry3D
	~Geometry3D () override

virtual Geometry3D &	Rotate (const Eigen::Matrix3d &R)

Public Member Functions inherited from open3d::geometry::Geometry
virtual	~Geometry ()

GeometryType	GetGeometryType () const
	Returns one of registered geometry types. More...

int	Dimension () const
	Returns whether the geometry is 2D or 3D. More...

std::string	GetName () const

void	SetName (const std::string &name)

Static Public Member Functions
static std::shared_ptr< HalfEdgeTriangleMesh >	CreateFromTriangleMesh (const TriangleMesh &mesh)

Static Public Member Functions inherited from open3d::geometry::Geometry3D
static Eigen::Matrix3d	GetRotationMatrixFromXYZ (const Eigen::Vector3d &rotation)
	Get Rotation Matrix from XYZ RotationType. More...

static Eigen::Matrix3d	GetRotationMatrixFromYZX (const Eigen::Vector3d &rotation)
	Get Rotation Matrix from YZX RotationType. More...

static Eigen::Matrix3d	GetRotationMatrixFromZXY (const Eigen::Vector3d &rotation)
	Get Rotation Matrix from ZXY RotationType. More...

static Eigen::Matrix3d	GetRotationMatrixFromXZY (const Eigen::Vector3d &rotation)
	Get Rotation Matrix from XZY RotationType. More...

static Eigen::Matrix3d	GetRotationMatrixFromZYX (const Eigen::Vector3d &rotation)
	Get Rotation Matrix from ZYX RotationType. More...

static Eigen::Matrix3d	GetRotationMatrixFromYXZ (const Eigen::Vector3d &rotation)
	Get Rotation Matrix from YXZ RotationType. More...

static Eigen::Matrix3d	GetRotationMatrixFromAxisAngle (const Eigen::Vector3d &rotation)
	Get Rotation Matrix from AxisAngle RotationType. More...

static Eigen::Matrix3d	GetRotationMatrixFromQuaternion (const Eigen::Vector4d &rotation)
	Get Rotation Matrix from Quaternion. More...

Data Fields
std::vector< Eigen::Vector3i >	triangles_
	List of triangles in the mesh. More...

std::vector< Eigen::Vector3d >	triangle_normals_
	List of triangle normals in the mesh. More...

std::vector< HalfEdge >	half_edges_
	List of HalfEdge in the mesh. More...

std::vector< std::vector< int > >	ordered_half_edge_from_vertex_

Data Fields inherited from open3d::geometry::MeshBase
std::vector< Eigen::Vector3d >	vertices_
	Vertex coordinates. More...

std::vector< Eigen::Vector3d >	vertex_normals_
	Vertex normals. More...

std::vector< Eigen::Vector3d >	vertex_colors_
	RGB colors of vertices. More...

Protected Member Functions
	HalfEdgeTriangleMesh (Geometry::GeometryType type)
	Parameterized Constructor. More...

int	NextHalfEdgeFromVertex (int init_half_edge_index) const

int	NextHalfEdgeOnBoundary (int curr_half_edge_index) const

Protected Member Functions inherited from open3d::geometry::MeshBase
	MeshBase (Geometry::GeometryType type)

	MeshBase (Geometry::GeometryType type, const std::vector< Eigen::Vector3d > &vertices)

Protected Member Functions inherited from open3d::geometry::Geometry3D
	Geometry3D (GeometryType type)
	Parameterized Constructor. More...

Eigen::Vector3d	ComputeMinBound (const std::vector< Eigen::Vector3d > &points) const
	Compute min bound of a list points. More...

Eigen::Vector3d	ComputeMaxBound (const std::vector< Eigen::Vector3d > &points) const
	Compute max bound of a list points. More...

Eigen::Vector3d	ComputeCenter (const std::vector< Eigen::Vector3d > &points) const
	Computer center of a list of points. More...

void	ResizeAndPaintUniformColor (std::vector< Eigen::Vector3d > &colors, const size_t size, const Eigen::Vector3d &color) const
	Resizes the colors vector and paints a uniform color. More...

void	TransformPoints (const Eigen::Matrix4d &transformation, std::vector< Eigen::Vector3d > &points) const
	Transforms all points with the transformation matrix. More...

void	TransformNormals (const Eigen::Matrix4d &transformation, std::vector< Eigen::Vector3d > &normals) const
	Transforms the normals with the transformation matrix. More...

void	TransformCovariances (const Eigen::Matrix4d &transformation, std::vector< Eigen::Matrix3d > &covariances) const
	Transforms all covariance matrices with the transformation. More...

void	TranslatePoints (const Eigen::Vector3d &translation, std::vector< Eigen::Vector3d > &points, bool relative) const
	Apply translation to the geometry coordinates. More...

void	ScalePoints (const double scale, std::vector< Eigen::Vector3d > &points, const Eigen::Vector3d &center) const
	Scale the coordinates of all points by the scaling factor `scale`. More...

void	RotatePoints (const Eigen::Matrix3d &R, std::vector< Eigen::Vector3d > &points, const Eigen::Vector3d &center) const
	Rotate all points with the rotation matrix `R`. More...

void	RotateNormals (const Eigen::Matrix3d &R, std::vector< Eigen::Vector3d > &normals) const
	Rotate all normals with the rotation matrix `R`. More...

void	RotateCovariances (const Eigen::Matrix3d &R, std::vector< Eigen::Matrix3d > &covariances) const
	Rotate all covariance matrices with the rotation matrix `R`. More...

Protected Member Functions inherited from open3d::geometry::Geometry
	Geometry (GeometryType type, int dimension)
	Parameterized Constructor. More...

Additional Inherited Members
Public Types inherited from open3d::geometry::MeshBase
enum class	SimplificationContraction { Average , Quadric }
	Indicates the method that is used for mesh simplification if multiple vertices are combined to a single one. More...

enum class	FilterScope { All , Color , Normal , Vertex }
	Indicates the scope of filter operations. More...

enum class	DeformAsRigidAsPossibleEnergy { Spokes , Smoothed }

Public Types inherited from open3d::geometry::Geometry
enum class	GeometryType { Unspecified = 0 , PointCloud = 1 , VoxelGrid = 2 , Octree = 3 , LineSet = 4 , MeshBase = 5 , TriangleMesh = 6 , HalfEdgeTriangleMesh = 7 , Image = 8 , RGBDImage = 9 , TetraMesh = 10 , OrientedBoundingBox = 11 , AxisAlignedBoundingBox = 12 }
	Specifies possible geometry types. More...

Detailed Description

HalfEdgeTriangleMesh inherits TriangleMesh class with the addition of HalfEdge data structure for each half edge in the mesh as well as related functions.

Constructor & Destructor Documentation

◆ HalfEdgeTriangleMesh() [1/2]

open3d::geometry::HalfEdgeTriangleMesh::HalfEdgeTriangleMesh ( )

inline

Default Constructor.

Creates an empty instance with GeometryType of HalfEdgeTriangleMesh.

◆ HalfEdgeTriangleMesh() [2/2]

open3d::geometry::HalfEdgeTriangleMesh::HalfEdgeTriangleMesh ( Geometry::GeometryType type )

inlineprotected

Parameterized Constructor.

Creates an empty instance with GeometryType of specified type.

Parameters

type	Specifies GeometryType for the HalfEdgeTriangleMesh.

Member Function Documentation

◆ BoundaryHalfEdgesFromVertex()

std::vector< int > open3d::geometry::HalfEdgeTriangleMesh::BoundaryHalfEdgesFromVertex ( int vertex_index ) const

Query manifold boundary half edges from a starting vertex If query vertex is not on boundary, empty vector will be returned.

◆ BoundaryVerticesFromVertex()

std::vector< int > open3d::geometry::HalfEdgeTriangleMesh::BoundaryVerticesFromVertex ( int vertex_index ) const

Query manifold boundary vertices from a starting vertex If query vertex is not on boundary, empty vector will be returned.

◆ Clear()

HalfEdgeTriangleMesh & open3d::geometry::HalfEdgeTriangleMesh::Clear ( )

overridevirtual

Clear all elements in the geometry.

Reimplemented from open3d::geometry::MeshBase.

◆ CreateFromTriangleMesh()

std::shared_ptr< HalfEdgeTriangleMesh > open3d::geometry::HalfEdgeTriangleMesh::CreateFromTriangleMesh ( const TriangleMesh & mesh )

static

Convert HalfEdgeTriangleMesh from TriangleMesh. Throws exception if the input mesh is not manifold.

◆ GetBoundaries()

std::vector< std::vector< int > > open3d::geometry::HalfEdgeTriangleMesh::GetBoundaries ( ) const

Returns a vector of boundaries. A boundary is a vector of vertices.

◆ HasHalfEdges()

bool open3d::geometry::HalfEdgeTriangleMesh::HasHalfEdges ( ) const

Returns true if half-edges have already been computed.

◆ NextHalfEdgeFromVertex()

int open3d::geometry::HalfEdgeTriangleMesh::NextHalfEdgeFromVertex ( int init_half_edge_index ) const

protected

Returns the next half edge from starting vertex of the input half edge, in a counterclock wise manner. Returns -1 if when hitting a boundary. This is done by traversing to the next, next and twin half edge.

◆ NextHalfEdgeOnBoundary()

int open3d::geometry::HalfEdgeTriangleMesh::NextHalfEdgeOnBoundary ( int curr_half_edge_index ) const

protected

◆ operator+()

HalfEdgeTriangleMesh open3d::geometry::HalfEdgeTriangleMesh::operator+ ( const HalfEdgeTriangleMesh & mesh ) const

◆ operator+=()

HalfEdgeTriangleMesh & open3d::geometry::HalfEdgeTriangleMesh::operator+= ( const HalfEdgeTriangleMesh & mesh )

Field Documentation

◆ half_edges_

std::vector<HalfEdge> open3d::geometry::HalfEdgeTriangleMesh::half_edges_

List of HalfEdge in the mesh.

◆ ordered_half_edge_from_vertex_

std::vector<std::vector<int> > open3d::geometry::HalfEdgeTriangleMesh::ordered_half_edge_from_vertex_

Counter-clockwise ordered half-edges started from each vertex. If the vertex is on boundary, the starting edge must be on boundary too.

◆ triangle_normals_

std::vector<Eigen::Vector3d> open3d::geometry::HalfEdgeTriangleMesh::triangle_normals_

List of triangle normals in the mesh.

◆ triangles_

std::vector<Eigen::Vector3i> open3d::geometry::HalfEdgeTriangleMesh::triangles_

List of triangles in the mesh.

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

/home/runner/work/Open3D/Open3D/cpp/open3d/geometry/HalfEdgeTriangleMesh.h (b9e049c (Sun Dec 31 11:36:26 2023 -0800))
/home/runner/work/Open3D/Open3D/cpp/open3d/geometry/HalfEdgeTriangleMesh.cpp (b9e049c (Sun Dec 31 11:36:26 2023 -0800))

Data Structures

Public Member Functions

Static Public Member Functions

Data Fields

Protected Member Functions

Additional Inherited Members