Classes
struct	CDTParam
	Parameters for controling the CDT. More...

Functions
template<typename DerivedV, typename DerivedF, typename DerivedTV, typename DerivedTT, typename DerivedTF>
bool	cdt (const Eigen::MatrixBase< DerivedV > &V, const Eigen::MatrixBase< DerivedF > &F, const CDTParam &param, Eigen::PlainObjectBase< DerivedTV > &TV, Eigen::PlainObjectBase< DerivedTT > &TT, Eigen::PlainObjectBase< DerivedTF > &TF)
	Create a constrained delaunay tessellation containing convex hull of the given non-selfintersecting mesh.
template<typename DerivedV, typename DerivedF, typename DerivedH, typename DerivedVM, typename DerivedFM, typename DerivedR>
void	mesh_to_tetgenio (const Eigen::MatrixBase< DerivedV > &V, const Eigen::MatrixBase< DerivedF > &F, const Eigen::MatrixBase< DerivedH > &H, const Eigen::MatrixBase< DerivedVM > &VM, const Eigen::MatrixBase< DerivedFM > &FM, const Eigen::MatrixBase< DerivedR > &R, tetgenio &in)
	Load a vertex list and face list into a tetgenio object.
bool	mesh_with_skeleton (const Eigen::MatrixXd &V, const Eigen::MatrixXi &F, const Eigen::MatrixXd &C, const Eigen::VectorXi &, const Eigen::MatrixXi &BE, const Eigen::MatrixXi &CE, const int samples_per_bone, const std::string &tetgen_flags, Eigen::MatrixXd &VV, Eigen::MatrixXi &TT, Eigen::MatrixXi &FF)
	Mesh the interior of a given surface with tetrahedra which are graded (tend to be small near the surface and large inside) and conform to the given handles and samplings thereof.
bool	mesh_with_skeleton (const Eigen::MatrixXd &V, const Eigen::MatrixXi &F, const Eigen::MatrixXd &C, const Eigen::VectorXi &, const Eigen::MatrixXi &BE, const Eigen::MatrixXi &CE, const int samples_per_bone, Eigen::MatrixXd &VV, Eigen::MatrixXi &TT, Eigen::MatrixXi &FF)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
template<typename DerivedV, typename DerivedT, typename DerivedF, typename DerivedTM, typename DerivedR, typename DerivedN, typename DerivedPT, typename DerivedFT>
bool	tetgenio_to_tetmesh (const tetgenio &out, Eigen::PlainObjectBase< DerivedV > &V, Eigen::PlainObjectBase< DerivedT > &T, Eigen::PlainObjectBase< DerivedF > &F, Eigen::PlainObjectBase< DerivedTM > &TM, Eigen::PlainObjectBase< DerivedR > &R, Eigen::PlainObjectBase< DerivedN > &N, Eigen::PlainObjectBase< DerivedPT > &PT, Eigen::PlainObjectBase< DerivedFT > &FT, int &num_regions)
	Convert a tetgenio to a tetmesh.
template<typename DerivedV, typename DerivedF, typename DerivedH, typename DerivedVM, typename DerivedFM, typename DerivedR, typename DerivedTV, typename DerivedTT, typename DerivedTF, typename DerivedTM, typename DerivedTR, typename DerivedTN, typename DerivedPT, typename DerivedFT>
int	tetrahedralize (const Eigen::MatrixBase< DerivedV > &V, const Eigen::MatrixBase< DerivedF > &F, const Eigen::MatrixBase< DerivedH > &H, const Eigen::MatrixBase< DerivedVM > &VM, const Eigen::MatrixBase< DerivedFM > &FM, const Eigen::MatrixBase< DerivedR > &R, const std::string switches, Eigen::PlainObjectBase< DerivedTV > &TV, Eigen::PlainObjectBase< DerivedTT > &TT, Eigen::PlainObjectBase< DerivedTF > &TF, Eigen::PlainObjectBase< DerivedTM > &TM, Eigen::PlainObjectBase< DerivedTR > &TR, Eigen::PlainObjectBase< DerivedTN > &TN, Eigen::PlainObjectBase< DerivedPT > &PT, Eigen::PlainObjectBase< DerivedFT > &FT, int &num_regions)
	Mesh the interior of a surface mesh (V,F) using tetgen.
template<typename DerivedV, typename DerivedF, typename DerivedTV, typename DerivedTT, typename DerivedTF>
int	tetrahedralize (const Eigen::MatrixBase< DerivedV > &V, const Eigen::MatrixBase< DerivedF > &F, const std::string switches, Eigen::PlainObjectBase< DerivedTV > &TV, Eigen::PlainObjectBase< DerivedTT > &TT, Eigen::PlainObjectBase< DerivedTF > &TF)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Function Documentation

◆ cdt()

template<typename DerivedV, typename DerivedF, typename DerivedTV, typename DerivedTT, typename DerivedTF>

bool igl::copyleft::tetgen::cdt	(	const Eigen::MatrixBase< DerivedV > &	V,
		const Eigen::MatrixBase< DerivedF > &	F,
		const CDTParam &	param,
		Eigen::PlainObjectBase< DerivedTV > &	TV,
		Eigen::PlainObjectBase< DerivedTT > &	TT,
		Eigen::PlainObjectBase< DerivedTF > &	TF )

Create a constrained delaunay tessellation containing convex hull of the given non-selfintersecting mesh.

Parameters

[in]	V	#V by 3 list of input mesh vertices
[in]	F	#F by 3 list of input mesh facets
[in]	param	see above
[out]	TV	#TV by 3 list of output mesh vertices (V come first)
[out]	TT	#TT by 3 list of tetrahedra indices into TV.
[out]	TF	#TF by 3 list of facets from F potentially subdivided.

◆ mesh_to_tetgenio()

template<typename DerivedV, typename DerivedF, typename DerivedH, typename DerivedVM, typename DerivedFM, typename DerivedR>

void igl::copyleft::tetgen::mesh_to_tetgenio	(	const Eigen::MatrixBase< DerivedV > &	V,
		const Eigen::MatrixBase< DerivedF > &	F,
		const Eigen::MatrixBase< DerivedH > &	H,
		const Eigen::MatrixBase< DerivedVM > &	VM,
		const Eigen::MatrixBase< DerivedFM > &	FM,
		const Eigen::MatrixBase< DerivedR > &	R,
		tetgenio &	in )

Load a vertex list and face list into a tetgenio object.

Parameters

[in]	V	#V by 3 vertex position list
[in]	F	#F list of polygon face indices into V (0-indexed)
[out]	in	tetgenio input object
[out]	H	#H list of seed point inside each hole
[out]	R	#R list of seed point inside each region

◆ mesh_with_skeleton() [1/2]

bool igl::copyleft::tetgen::mesh_with_skeleton	(	const Eigen::MatrixXd &	V,
		const Eigen::MatrixXi &	F,
		const Eigen::MatrixXd &	C,
		const Eigen::VectorXi &	,
		const Eigen::MatrixXi &	BE,
		const Eigen::MatrixXi &	CE,
		const int	samples_per_bone,
		const std::string &	tetgen_flags,
		Eigen::MatrixXd &	VV,
		Eigen::MatrixXi &	TT,
		Eigen::MatrixXi &	FF )

Mesh the interior of a given surface with tetrahedra which are graded (tend to be small near the surface and large inside) and conform to the given handles and samplings thereof.

Parameters

[in]	V	#V by 3 list of mesh vertex positions
[in]	F	#F by 3 list of triangle indices
[in]	C	#C by 3 list of vertex positions
[in]	P	#P list of point handle indices
[in]	BE	#BE by 2 list of bone-edge indices
[in]	CE	#CE by 2 list of cage-edge indices
[in]	samples_per_bone	#samples to add per bone
[in]	tetgen_flags	flags to pass to tetgen {""-->"pq2Y"} otherwise you're on your own and it's your funeral if you pass nonsense flags
[out]	VV	#VV by 3 list of tet-mesh vertex positions
[out]	TT	#TT by 4 list of tetrahedra indices
[out]	FF	#FF by 3 list of surface triangle indices

Returns: true only on success

◆ mesh_with_skeleton() [2/2]

bool igl::copyleft::tetgen::mesh_with_skeleton	(	const Eigen::MatrixXd &	V,
		const Eigen::MatrixXi &	F,
		const Eigen::MatrixXd &	C,
		const Eigen::VectorXi &	,
		const Eigen::MatrixXi &	BE,
		const Eigen::MatrixXi &	CE,
		const int	samples_per_bone,
		Eigen::MatrixXd &	VV,
		Eigen::MatrixXi &	TT,
		Eigen::MatrixXi &	FF )

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

◆ tetgenio_to_tetmesh()

template<typename DerivedV, typename DerivedT, typename DerivedF, typename DerivedTM, typename DerivedR, typename DerivedN, typename DerivedPT, typename DerivedFT>

bool igl::copyleft::tetgen::tetgenio_to_tetmesh	(	const tetgenio &	out,
		Eigen::PlainObjectBase< DerivedV > &	V,
		Eigen::PlainObjectBase< DerivedT > &	T,
		Eigen::PlainObjectBase< DerivedF > &	F,
		Eigen::PlainObjectBase< DerivedTM > &	TM,
		Eigen::PlainObjectBase< DerivedR > &	R,
		Eigen::PlainObjectBase< DerivedN > &	N,
		Eigen::PlainObjectBase< DerivedPT > &	PT,
		Eigen::PlainObjectBase< DerivedFT > &	FT,
		int &	num_regions )

Convert a tetgenio to a tetmesh.

Parameters

[in]	out	output of tetrahedralization
[out]	V	#V by 3 list of mesh vertex positions
[out]	T	#T by 4 list of mesh tet indices into V
[out]	F	#F by 3 list of mesh triangle indices into V
[out]	TM	#T by 1 list of material indices into R
[out]	R	#TT list of region ID for each tetrahedron
[out]	N	#TT by 4 list of indices neighbors for each tetrahedron ('n')
[out]	PT	#TV list of incident tetrahedron for a vertex ('m')
[out]	FT	#TF by 2 list of tetrahedrons sharing a triface ('nn')
[out]	num_regions	Number of regions in output mesh

◆ tetrahedralize() [1/2]

template<typename DerivedV, typename DerivedF, typename DerivedH, typename DerivedVM, typename DerivedFM, typename DerivedR, typename DerivedTV, typename DerivedTT, typename DerivedTF, typename DerivedTM, typename DerivedTR, typename DerivedTN, typename DerivedPT, typename DerivedFT>

int igl::copyleft::tetgen::tetrahedralize	(	const Eigen::MatrixBase< DerivedV > &	V,
		const Eigen::MatrixBase< DerivedF > &	F,
		const Eigen::MatrixBase< DerivedH > &	H,
		const Eigen::MatrixBase< DerivedVM > &	VM,
		const Eigen::MatrixBase< DerivedFM > &	FM,
		const Eigen::MatrixBase< DerivedR > &	R,
		const std::string	switches,
		Eigen::PlainObjectBase< DerivedTV > &	TV,
		Eigen::PlainObjectBase< DerivedTT > &	TT,
		Eigen::PlainObjectBase< DerivedTF > &	TF,
		Eigen::PlainObjectBase< DerivedTM > &	TM,
		Eigen::PlainObjectBase< DerivedTR > &	TR,
		Eigen::PlainObjectBase< DerivedTN > &	TN,
		Eigen::PlainObjectBase< DerivedPT > &	PT,
		Eigen::PlainObjectBase< DerivedFT > &	FT,
		int &	num_regions )

Mesh the interior of a surface mesh (V,F) using tetgen.

Parameters

[in]	V	#V by 3 vertex position list
[in]	F	#F list of polygon face indices into V (0-indexed)
[in]	H	#H by 3 list of seed points inside holes
[in]	VM	#VM list of vertex markers
[in]	FM	#FM list of face markers
[in]	R	#R by 5 list of region attributes
[in]	switches	string of tetgen options (See tetgen documentation) e.g. "pq1.414a0.01" tries to mesh the interior of a given surface with quality and area constraints "" will mesh the convex hull constrained to pass through V (ignores F)
[out]	TV	#TV by 3 vertex position list
[out]	TT	#TT by 4 list of tet face indices
[out]	TF	#TF by 3 list of triangle face indices ('f', else boundary_facets is called on TT)
[out]	TR	#TT list of region ID for each tetrahedron
[out]	TN	#TT by 4 list of indices neighbors for each tetrahedron ('n')
[out]	PT	#TV list of incident tetrahedron for a vertex ('m')
[out]	FT	#TF by 2 list of tetrahedrons sharing a triface ('nn')
[out]	num_regions	Number of regions in output mesh

Returns: status: 0 success 1 tetgen threw exception 2 tetgen did not crash but could not create any tets (probably there are holes, duplicate faces etc.) -1 other error

Note: The polygons F can contain polygons with different number of vertices. Trailing unused columns are filled with -1. For example, triangles and segments can be specified using a #F x 3 matrix: for segments the third column contains -1.; Tetgen mixes integer region ids in with other region data attr = (int) in->regionlist[i + 3];. So it's declared safe to use integer types for TR since this also assumes that there's a single tet attribute and that it's the region id.

Example

Eigen::MatrixXd V;
Eigen::MatrixXi F;
…
Eigen::VectorXi VM,FM;
Eigen::MatrixXd H,R;
Eigen::VectorXi TM,TR,PT;
Eigen::MatrixXi FT,TN;
int numRegions;
tetrahedralize(V,F,H,VM,FM,R,switches,TV,TT,TF,TM,TR,TN,PT,FT,numRegions);

◆ tetrahedralize() [2/2]

template<typename DerivedV, typename DerivedF, typename DerivedTV, typename DerivedTT, typename DerivedTF>

int igl::copyleft::tetgen::tetrahedralize	(	const Eigen::MatrixBase< DerivedV > &	V,
		const Eigen::MatrixBase< DerivedF > &	F,
		const std::string	switches,
		Eigen::PlainObjectBase< DerivedTV > &	TV,
		Eigen::PlainObjectBase< DerivedTT > &	TT,
		Eigen::PlainObjectBase< DerivedTF > &	TF )

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Classes

Functions

Function Documentation

◆ cdt()

◆ mesh_to_tetgenio()

◆ mesh_with_skeleton() [1/2]

◆ mesh_with_skeleton() [2/2]

◆ tetgenio_to_tetmesh()

◆ tetrahedralize() [1/2]

Example

◆ tetrahedralize() [2/2]