Base type for a triangle mesh. More...

#include <OpenMesh/Mesh/TriMeshT.hh>

Inheritance diagram for OpenMesh::TriMeshT< Kernel >:

[legend]

Collaboration diagram for OpenMesh::TriMeshT< Kernel >:

Public Types
enum	{ IsPolyMesh = 0 }

enum	{ IsTriMesh = 1 }

typedef TriMeshT< Kernel >	This

typedef PolyMeshT< Kernel >	PolyMesh

using	ConnectivityTag = TriConnectivityTag

typedef PolyMesh::Scalar	Scalar

typedef PolyMesh::Point	Point

typedef PolyMesh::Normal	Normal

typedef PolyMesh::Color	Color

typedef PolyMesh::TexCoord1D	TexCoord1D

typedef PolyMesh::TexCoord2D	TexCoord2D

typedef PolyMesh::TexCoord3D	TexCoord3D

typedef PolyMesh::Vertex	Vertex

typedef PolyMesh::Halfedge	Halfedge

typedef PolyMesh::Edge	Edge

typedef PolyMesh::Face	Face

typedef PolyMesh::VertexHandle	VertexHandle

typedef PolyMesh::HalfedgeHandle	HalfedgeHandle

typedef PolyMesh::EdgeHandle	EdgeHandle

typedef PolyMesh::FaceHandle	FaceHandle

typedef PolyMesh::VertexIter	VertexIter

typedef PolyMesh::ConstVertexIter	ConstVertexIter

typedef PolyMesh::EdgeIter	EdgeIter

typedef PolyMesh::ConstEdgeIter	ConstEdgeIter

typedef PolyMesh::FaceIter	FaceIter

typedef PolyMesh::ConstFaceIter	ConstFaceIter

typedef PolyMesh::VertexVertexIter	VertexVertexIter

typedef PolyMesh::VertexOHalfedgeIter	VertexOHalfedgeIter

typedef PolyMesh::VertexIHalfedgeIter	VertexIHalfedgeIter

typedef PolyMesh::VertexEdgeIter	VertexEdgeIter

typedef PolyMesh::VertexFaceIter	VertexFaceIter

typedef PolyMesh::FaceVertexIter	FaceVertexIter

typedef PolyMesh::FaceHalfedgeIter	FaceHalfedgeIter

typedef PolyMesh::FaceEdgeIter	FaceEdgeIter

typedef PolyMesh::FaceFaceIter	FaceFaceIter

typedef PolyMesh::ConstVertexVertexIter	ConstVertexVertexIter

typedef PolyMesh::ConstVertexOHalfedgeIter	ConstVertexOHalfedgeIter

typedef PolyMesh::ConstVertexIHalfedgeIter	ConstVertexIHalfedgeIter

typedef PolyMesh::ConstVertexEdgeIter	ConstVertexEdgeIter

typedef PolyMesh::ConstVertexFaceIter	ConstVertexFaceIter

typedef PolyMesh::ConstFaceVertexIter	ConstFaceVertexIter

typedef PolyMesh::ConstFaceHalfedgeIter	ConstFaceHalfedgeIter

typedef PolyMesh::ConstFaceEdgeIter	ConstFaceEdgeIter

typedef PolyMesh::ConstFaceFaceIter	ConstFaceFaceIter

Public Types inherited from OpenMesh::PolyMeshT< Kernel >
enum	{ IsPolyMesh = 1 }

enum	{ IsTriMesh = 0 }

typedef PolyMeshT< Kernel >	This
	Self type. Used to specify iterators/circulators.

using	ConnectivityTag = PolyConnectivityTag

typedef Kernel::Scalar	Scalar
	Scalar type.

typedef Kernel::Point	Point
	Coordinate type.

typedef Kernel::Normal	Normal
	Normal type.

typedef Kernel::Color	Color
	Color type.

typedef Kernel::TexCoord1D	TexCoord1D
	TexCoord1D type.

typedef Kernel::TexCoord2D	TexCoord2D
	TexCoord2D type.

typedef Kernel::TexCoord3D	TexCoord3D
	TexCoord3D type.

typedef Kernel::Vertex	Vertex
	Vertex type.

typedef Kernel::Halfedge	Halfedge
	Halfedge type.

typedef Kernel::Edge	Edge
	Edge type.

typedef Kernel::Face	Face
	Face type.

typedef Kernel::VertexHandle	VertexHandle
	Handle for referencing the corresponding item.

typedef Kernel::HalfedgeHandle	HalfedgeHandle
	Scalar type.

typedef Kernel::EdgeHandle	EdgeHandle
	Scalar type.

typedef Kernel::FaceHandle	FaceHandle
	Scalar type.

typedef Kernel::VertexIter	VertexIter
	Scalar type.

typedef Kernel::HalfedgeIter	HalfedgeIter
	Scalar type.

typedef Kernel::EdgeIter	EdgeIter
	Scalar type.

typedef Kernel::FaceIter	FaceIter
	Scalar type.

typedef Kernel::ConstVertexIter	ConstVertexIter
	Scalar type.

typedef Kernel::ConstHalfedgeIter	ConstHalfedgeIter
	Scalar type.

typedef Kernel::ConstEdgeIter	ConstEdgeIter
	Scalar type.

typedef Kernel::ConstFaceIter	ConstFaceIter
	Scalar type.

typedef Kernel::VertexVertexIter	VertexVertexIter
	Circulator.

typedef Kernel::VertexOHalfedgeIter	VertexOHalfedgeIter
	Circulator.

typedef Kernel::VertexIHalfedgeIter	VertexIHalfedgeIter
	Circulator.

typedef Kernel::VertexEdgeIter	VertexEdgeIter
	Circulator.

typedef Kernel::VertexFaceIter	VertexFaceIter
	Circulator.

typedef Kernel::FaceVertexIter	FaceVertexIter
	Circulator.

typedef Kernel::FaceHalfedgeIter	FaceHalfedgeIter
	Circulator.

typedef Kernel::FaceEdgeIter	FaceEdgeIter
	Circulator.

typedef Kernel::FaceFaceIter	FaceFaceIter
	Circulator.

typedef Kernel::ConstVertexVertexIter	ConstVertexVertexIter
	Circulator.

typedef Kernel::ConstVertexOHalfedgeIter	ConstVertexOHalfedgeIter
	Circulator.

typedef Kernel::ConstVertexIHalfedgeIter	ConstVertexIHalfedgeIter
	Circulator.

typedef Kernel::ConstVertexEdgeIter	ConstVertexEdgeIter
	Circulator.

typedef Kernel::ConstVertexFaceIter	ConstVertexFaceIter
	Circulator.

typedef Kernel::ConstFaceVertexIter	ConstFaceVertexIter
	Circulator.

typedef Kernel::ConstFaceHalfedgeIter	ConstFaceHalfedgeIter
	Circulator.

typedef Kernel::ConstFaceEdgeIter	ConstFaceEdgeIter
	Circulator.

typedef Kernel::ConstFaceFaceIter	ConstFaceFaceIter
	Circulator.

Public Member Functions
	TriMeshT ()
	Default constructor.

	TriMeshT (PolyMesh rhs)

virtual	~TriMeshT ()
	Destructor.

HalfedgeHandle	vertex_split (Point _v0_point, VertexHandle _v1, VertexHandle _vl, VertexHandle _vr)
	Vertex Split: inverse operation to collapse(). More...

HalfedgeHandle	vertex_split (VertexHandle _v0, VertexHandle _v1, VertexHandle _vl, VertexHandle _vr)
	Vertex Split: inverse operation to collapse(). More...

SmartVertexHandle	split (EdgeHandle _eh, const Point &_p)
	Edge split (= 2-to-4 split) More...

SmartVertexHandle	split_copy (EdgeHandle _eh, const Point &_p)
	Edge split (= 2-to-4 split) More...

void	split (EdgeHandle _eh, VertexHandle _vh)
	Edge split (= 2-to-4 split) More...

void	split_copy (EdgeHandle _eh, VertexHandle _vh)
	Edge split (= 2-to-4 split) More...

SmartVertexHandle	split (FaceHandle _fh, const Point &_p)
	Face split (= 1-to-3 split, calls corresponding PolyMeshT function). More...

SmartVertexHandle	split_copy (FaceHandle _fh, const Point &_p)
	Face split (= 1-to-3 split, calls corresponding PolyMeshT function). More...

void	split (FaceHandle _fh)
	Face split (= 1-to-4) split, splits edges at midpoints and adds 4 new faces in the interior). More...

void	split (FaceHandle _fh, VertexHandle _vh)
	Face split (= 1-to-3 split, calls corresponding PolyMeshT function). More...

void	split_copy (FaceHandle _fh, VertexHandle _vh)
	Face split (= 1-to-3 split, calls corresponding PolyMeshT function). More...

Scalar	calc_face_area (FaceHandle _fh) const
	Calculates the area of a face. More...

Normal vector computation
Normal	calc_face_normal (FaceHandle _fh) const
	Calculate normal vector for face _fh (specialized for TriMesh). More...

Public Member Functions inherited from OpenMesh::PolyMeshT< Kernel >
	PolyMeshT ()
	Circulator.

template<typename T >
	PolyMeshT (const T &t)
	Circulator.

virtual	~PolyMeshT ()
	Circulator.

SmartVertexHandle	new_vertex ()
	Uses default copy and assignment operator. More...

SmartVertexHandle	new_vertex (const Point _p)
	Adds a new vertex initialized to a custom position. More...

SmartVertexHandle	new_vertex_dirty (const Point _p)
	Same as new_vertex(const Point&) but never shrinks, only enlarges the vertex property vectors. More...

SmartVertexHandle	add_vertex (const Point _p)
	Alias for new_vertex(const Point&).

SmartVertexHandle	add_vertex_dirty (const Point _p)
	Alias for new_vertex_dirty().

void	update_normals ()
	Compute normals for all primitives. More...

void	update_normal (FaceHandle _fh)
	Update normal for face _fh.

void	update_face_normals ()
	Update normal vectors for all faces. More...

Normal	calc_face_normal (const Point &_p0, const Point &_p1, const Point &_p2) const
	Calculate normal vector for face (_p0, _p1, _p2).

Normal	calc_normal (FaceHandle _fh) const
	same as calc_face_normal

void	calc_face_centroid (FaceHandle _fh, Point &_pt) const
	calculates the average of the vertices defining _fh

Point	calc_face_centroid (FaceHandle _fh) const
	Computes and returns the average of the vertices defining _fh.

Point	calc_centroid (FaceHandle _fh) const
	Computes and returns the average of the vertices defining _fh (same as calc_face_centroid)

Point	calc_centroid (EdgeHandle _eh) const
	Computes and returns the average of the vertices defining _eh (same as calc_edge_midpoint)

Point	calc_centroid (HalfedgeHandle _heh) const
	Computes and returns the average of the vertices defining _heh (same as calc_edge_midpoint for edge of halfedge)

Point	calc_centroid (VertexHandle _vh) const
	Returns the point of _vh.

Point	calc_centroid (MeshHandle _mh) const
	Computes and returns the average of the vertices defining the mesh.

void	update_normal (HalfedgeHandle _heh, const double _feature_angle=0.8)
	Update normal for halfedge _heh.

void	update_halfedge_normals (const double _feature_angle=0.8)
	Update normal vectors for all halfedges. More...

virtual Normal	calc_halfedge_normal (HalfedgeHandle _heh, const double _feature_angle=0.8) const
	Calculate halfedge normal for one specific halfedge. More...

Normal	calc_normal (HalfedgeHandle, const double _feature_angle=0.8) const
	same as calc_halfedge_normal

bool	is_estimated_feature_edge (HalfedgeHandle _heh, const double _feature_angle) const
	identifies feature edges w.r.t. More...

void	update_normal (VertexHandle _vh)
	Update normal for vertex _vh.

void	update_vertex_normals ()
	Update normal vectors for all vertices. More...

Normal	calc_vertex_normal (VertexHandle _vh) const
	Calculate vertex normal for one specific vertex. More...

void	calc_vertex_normal_fast (VertexHandle _vh, Normal &_n) const
	Different methods for calculation of the normal at _vh: More...

void	calc_vertex_normal_correct (VertexHandle _vh, Normal &_n) const
	Compute normals for all primitives. More...

void	calc_vertex_normal_loop (VertexHandle _vh, Normal &_n) const
	Compute normals for all primitives. More...

Normal	calc_normal (VertexHandle _vh) const
	same as calc_vertex_normal_correct

void	calc_edge_vector (EdgeHandle _eh, Normal &_edge_vec) const
	Calculates the edge vector as the vector defined by the halfedge with id #0 (see below)

Normal	calc_edge_vector (EdgeHandle _eh) const
	Calculates the edge vector as the vector defined by the halfedge with id #0 (see below)

void	calc_edge_vector (HalfedgeHandle _heh, Normal &_edge_vec) const
	Calculates the edge vector as the difference of the the points defined by to_vertex_handle() and from_vertex_handle()

Normal	calc_edge_vector (HalfedgeHandle _heh) const
	Calculates the edge vector as the difference of the the points defined by to_vertex_handle() and from_vertex_handle()

Scalar	calc_edge_length (EdgeHandle _eh) const
	Compute normals for all primitives. More...

Scalar	calc_edge_length (HalfedgeHandle _heh) const
	Calculates the length of the edge _heh.

Scalar	calc_edge_sqr_length (EdgeHandle _eh) const
	Compute normals for all primitives. More...

Scalar	calc_edge_sqr_length (HalfedgeHandle _heh) const
	Compute normals for all primitives. More...

Point	calc_edge_midpoint (HalfedgeHandle _heh) const
	Calculates the midpoint of the halfedge _heh, defined by the positions of the two incident vertices.

Point	calc_edge_midpoint (EdgeHandle _eh) const
	Calculates the midpoint of the edge _eh, defined by the positions of the two incident vertices.

Normal	calc_normal (EdgeHandle _eh) const
	calculated and returns the average of the two vertex normals

void	calc_sector_vectors (HalfedgeHandle _in_heh, Normal &_vec0, Normal &_vec1) const
	defines a consistent representation of a sector geometry: the halfedge _in_heh defines the sector orientation the vertex pointed by _in_heh defines the sector center _vec0 and _vec1 are resp. More...

Scalar	calc_sector_angle (HalfedgeHandle _in_heh) const
	calculates the sector angle. More...

void	calc_sector_normal (HalfedgeHandle _in_heh, Normal &_sector_normal) const
	calculates the normal (non-normalized) of the face sector defined by the angle <(_in_heh,next_halfedge(_in_heh))

Scalar	calc_sector_area (HalfedgeHandle _in_heh) const
	calculates the area of the face sector defined by the angle <(_in_heh,next_halfedge(_in_heh)) NOTE: special cases (e.g. More...

Scalar	calc_dihedral_angle_fast (HalfedgeHandle _heh) const
	calculates the dihedral angle on the halfedge _heh More...

Scalar	calc_dihedral_angle_fast (EdgeHandle _eh) const
	calculates the dihedral angle on the edge _eh More...

Scalar	calc_dihedral_angle (HalfedgeHandle _heh) const
	Compute normals for all primitives. More...

Scalar	calc_dihedral_angle (EdgeHandle _eh) const
	Compute normals for all primitives. More...

unsigned int	find_feature_edges (Scalar _angle_tresh=OpenMesh::deg_to_rad(44.0))
	tags an edge as a feature if its dihedral angle is larger than _angle_tresh returns the number of the found feature edges, requires edge_status property

void	split (FaceHandle _fh, const Point &_p)
	Face split (= 1-to-n split)

void	split (FaceHandle _fh, VertexHandle _vh)
	Compute normals for all primitives. More...

void	split (EdgeHandle _eh, const Point &_p)
	Compute normals for all primitives. More...

void	split (EdgeHandle _eh, VertexHandle _vh)
	Compute normals for all primitives. More...

Static Public Member Functions
static constexpr bool	is_polymesh ()
	Determine whether this is a PolyMeshT or TriMeshT (This function does not check the per face vertex count! It only checks if the datatype is PolyMeshT or TriMeshT)

static constexpr bool	is_trimesh ()

Static Public Member Functions inherited from OpenMesh::PolyMeshT< Kernel >
static constexpr bool	is_polymesh ()
	Determine whether this is a PolyMeshT or TriMeshT (This function does not check the per face vertex count! It only checks if the datatype is PolyMeshT or TriMeshT)

static constexpr bool	is_trimesh ()

Detailed Description

template<class Kernel>
class OpenMesh::TriMeshT< Kernel >

Base type for a triangle mesh.

Base type for a triangle mesh, parameterized by a mesh kernel. The mesh inherits all methods from the kernel class and the more general polygonal mesh PolyMeshT. Therefore it provides the same types for items, handles, iterators and so on.

Parameters

Kernel template argument for the mesh kernel

Note: You should use the predefined mesh-kernel combinations in Predefined Mesh Types

See also: Specifying your MyMesh; OpenMesh::PolyMeshT

Member Function Documentation

◆ calc_face_area()

template<class Kernel >

Scalar OpenMesh::TriMeshT< Kernel >::calc_face_area ( FaceHandle _fh ) const

inline

Calculates the area of a face.

Parameters

_fh	Handle of the face to calculate the area of

◆ calc_face_normal()

template<class Kernel >

TriMeshT< Kernel >::Normal OpenMesh::TriMeshT< Kernel >::calc_face_normal ( FaceHandle _fh ) const

virtual

Calculate normal vector for face _fh (specialized for TriMesh).

Reimplemented from OpenMesh::PolyMeshT< Kernel >.

◆ split() [1/5]

template<class Kernel >

SmartVertexHandle OpenMesh::TriMeshT< Kernel >::split	(	EdgeHandle	_eh,
		const Point &	_p
	)

inline

Edge split (= 2-to-4 split)

The properties of the new edges will be undefined!

Parameters

_eh	Edge handle that should be splitted
_p	New point position that will be inserted at the edge

Returns: Vertex handle of the newly added vertex

◆ split() [2/5]

template<class Kernel >

void OpenMesh::TriMeshT< Kernel >::split	(	EdgeHandle	_eh,
		VertexHandle	_vh
	)

inline

Edge split (= 2-to-4 split)

The properties of the new edges will be undefined!

Parameters

_eh	Edge handle that should be splitted
_vh	Vertex handle that will be inserted at the edge

◆ split() [3/5]

template<class Kernel >

void OpenMesh::TriMeshT< Kernel >::split ( FaceHandle _fh )

inline

Face split (= 1-to-4) split, splits edges at midpoints and adds 4 new faces in the interior).

Parameters

_fh	Face handle that should be splitted

◆ split() [4/5]

template<class Kernel >

SmartVertexHandle OpenMesh::TriMeshT< Kernel >::split	(	FaceHandle	_fh,
		const Point &	_p
	)

inline

Face split (= 1-to-3 split, calls corresponding PolyMeshT function).

The properties of the new faces will be undefined!

Parameters

_fh	Face handle that should be splitted
_p	New point position that will be inserted in the face

Returns: Vertex handle of the new vertex

◆ split() [5/5]

template<class Kernel >

void OpenMesh::TriMeshT< Kernel >::split	(	FaceHandle	_fh,
		VertexHandle	_vh
	)

inline

Face split (= 1-to-3 split, calls corresponding PolyMeshT function).

The properties of the new faces will be undefined!

Parameters

_fh	Face handle that should be splitted
_vh	Vertex handle that will be inserted at the face

◆ split_copy() [1/4]

template<class Kernel >

SmartVertexHandle OpenMesh::TriMeshT< Kernel >::split_copy	(	EdgeHandle	_eh,
		const Point &	_p
	)

inline

Edge split (= 2-to-4 split)

The properties of the new edges will be adjusted to the properties of the original edge

Parameters

_eh	Edge handle that should be splitted
_p	New point position that will be inserted at the edge

Returns: Vertex handle of the newly added vertex

◆ split_copy() [2/4]

template<class Kernel >

void OpenMesh::TriMeshT< Kernel >::split_copy	(	EdgeHandle	_eh,
		VertexHandle	_vh
	)

inline

Edge split (= 2-to-4 split)

The properties of the new edges will be adjusted to the properties of the original edge

Parameters

_eh	Edge handle that should be splitted
_vh	Vertex handle that will be inserted at the edge

◆ split_copy() [3/4]

template<class Kernel >

SmartVertexHandle OpenMesh::TriMeshT< Kernel >::split_copy	(	FaceHandle	_fh,
		const Point &	_p
	)

inline

Face split (= 1-to-3 split, calls corresponding PolyMeshT function).

The properties of the new faces will be adjusted to the properties of the original face

Parameters

_fh	Face handle that should be splitted
_p	New point position that will be inserted in the face

Returns: Vertex handle of the new vertex

◆ split_copy() [4/4]

template<class Kernel >

void OpenMesh::TriMeshT< Kernel >::split_copy	(	FaceHandle	_fh,
		VertexHandle	_vh
	)

inline

Face split (= 1-to-3 split, calls corresponding PolyMeshT function).

The properties of the new faces will be adjusted to the properties of the original face

Parameters

_fh	Face handle that should be splitted
_vh	Vertex handle that will be inserted at the face

◆ vertex_split() [1/2]

template<class Kernel >

HalfedgeHandle OpenMesh::TriMeshT< Kernel >::vertex_split	(	Point	_v0_point,
		VertexHandle	_v1,
		VertexHandle	_vl,
		VertexHandle	_vr
	)

inline

Vertex Split: inverse operation to collapse().

Insert the new vertex at position v0. The vertex will be added as the inverse of the edge collapse. The faces above the split will be correctly attached to the two new edges


Before:
v_l     v0     v_r
 x      x      x
  \           /
   \         /
    \       /
     \     /
      \   /
       \ /
        x
        v1

After:
v_l    v0      v_r
 x------x------x
  \     |     /
   \    |    /
    \   |   /
     \  |  /
      \ | /
       |/
        x
        v1

Parameters

_v0_point	Point position for the new point
_v1	Vertex that will be split
_vl	Left vertex handle
_vr	Right vertex handle

Returns: Newly inserted halfedge

◆ vertex_split() [2/2]

template<class Kernel >

HalfedgeHandle OpenMesh::TriMeshT< Kernel >::vertex_split	(	VertexHandle	_v0,
		VertexHandle	_v1,
		VertexHandle	_vl,
		VertexHandle	_vr
	)

inline

Vertex Split: inverse operation to collapse().

Insert the new vertex at position v0. The vertex will be added as the inverse of the edge collapse. The faces above the split will be correctly attached to the two new edges


Before:
v_l     v0     v_r
 x      x      x
  \           /
   \         /
    \       /
     \     /
      \   /
       \ /
        x
        v1

After:
v_l    v0      v_r
 x------x------x
  \     |     /
   \    |    /
    \   |   /
     \  |  /
      \ | /
       |/
        x
        v1

Parameters

_v0	Vertex handle for the newly inserted point (Input has to be unconnected!)
_v1	Vertex that will be split
_vl	Left vertex handle
_vr	Right vertex handle

Returns: Newly inserted halfedge

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

OpenMesh/Core/Mesh/TriMeshT.hh
OpenMesh/Core/Mesh/TriMeshT_impl.hh

Public Types

Public Member Functions

Static Public Member Functions

Detailed Description

Member Function Documentation

◆ calc_face_area()

◆ calc_face_normal()

◆ split() [1/5]

◆ split() [2/5]

◆ split() [3/5]

◆ split() [4/5]

◆ split() [5/5]

◆ split_copy() [1/4]

◆ split_copy() [2/4]

◆ split_copy() [3/4]

◆ split_copy() [4/4]

◆ vertex_split() [1/2]

◆ vertex_split() [2/2]