open3d::t::geometry::vtkutils Namespace Reference

Data Structures
struct	VtkToTensorType
struct	VtkToTensorType< long long >

Functions
int	DtypeToVtkType (const core::Dtype &dtype)
vtkSmartPointer< vtkPolyData >	CreateVtkPolyDataFromGeometry (const Geometry &geometry, const std::unordered_set< std::string > &point_attr_include, const std::unordered_set< std::string > &face_attr_include, const std::unordered_set< std::string > &point_attr_exclude, const std::unordered_set< std::string > &face_attr_exclude, bool copy)
TriangleMesh	CreateTriangleMeshFromVtkPolyData (vtkPolyData *polydata, bool copy)
OPEN3D_LOCAL LineSet	CreateLineSetFromVtkPolyData (vtkPolyData *polydata, bool copy)
OPEN3D_LOCAL TriangleMesh	ExtrudeRotationTriangleMesh (const Geometry &geometry, const double angle, const core::Tensor &axis, int resolution, double translation, bool capping)
OPEN3D_LOCAL LineSet	ExtrudeRotationLineSet (const PointCloud &pointcloud, const double angle, const core::Tensor &axis, int resolution, double translation, bool capping)
OPEN3D_LOCAL TriangleMesh	ExtrudeLinearTriangleMesh (const Geometry &geometry, const core::Tensor &vector, double scale, bool capping)
OPEN3D_LOCAL LineSet	ExtrudeLinearLineSet (const PointCloud &pointcloud, const core::Tensor &vector, double scale, bool capping)
OPEN3D_LOCAL TriangleMesh	ComputeNormals (const TriangleMesh &mesh, bool vertex_normals, bool face_normals, bool consistency, bool auto_orient_normals, bool splitting, double feature_angle_deg)

Function Documentation

ComputeNormals()

TriangleMesh open3d::t::geometry::vtkutils::ComputeNormals	(	const TriangleMesh &	mesh,
		bool	vertex_normals,
		bool	face_normals,
		bool	consistency,
		bool	auto_orient_normals,
		bool	splitting,
		double	feature_angle_deg = 30
	)

Computes the normals for a mesh. In addition to computing the normals this function can fix the face vertex order and orient the normals to point outwards. This function can be applied to non-manifold or non-closed meshes but without any guarantees to correctness or quality for the result.

Parameters

mesh	A point cloud.
vertex_normals	If true compute the vertex normals.
face_normals	If true compute the face normals.
consistency	If true the algorithm fixes the vertex order of faces.
auto_orient_normals	If true normals will be flipped to point outwards
splitting	If true allows splitting of edges to account for sharp edges. Splitting an edge will create new vertices.
feature_angle_deg	The angle in degrees that defines sharp edges for splitting.

Returns

A new mesh with the computed normals.

CreateLineSetFromVtkPolyData()

LineSet open3d::t::geometry::vtkutils::CreateLineSetFromVtkPolyData	(	vtkPolyData *	polydata,
		bool	copy = false
	)

Creates a LineSet a vtkPolyData object. The returned LineSet may directly use the memory of the data arrays in the vtkPolyData object. The returned LineSet will hold references to the arrays and it is not necessary to keep other references to the vtkPolyData object or its arrays alive.

Parameters

polydata	Input polyData object.
copy	If true always create a copy of the data.

CreateTriangleMeshFromVtkPolyData()

TriangleMesh open3d::t::geometry::vtkutils::CreateTriangleMeshFromVtkPolyData	(	vtkPolyData *	polydata,
		bool	copy = false
	)

Creates a triangle mesh from a vtkPolyData object. The returned TriangleMesh may directly use the memory of the data arrays in the vtkPolyData object. The returned TriangleMesh will hold references to the arrays and it is not necessary to keep other references to the vtkPolyData object or its arrays alive.

Parameters

polydata	Input polyData object.
copy	If true always create a copy of the data.

CreateVtkPolyDataFromGeometry()

vtkSmartPointer< vtkPolyData > open3d::t::geometry::vtkutils::CreateVtkPolyDataFromGeometry	(	const Geometry &	geometry,
		const std::unordered_set< std::string > &	point_attr_include,
		const std::unordered_set< std::string > &	face_attr_include,
		const std::unordered_set< std::string > &	point_attr_exclude = {},
		const std::unordered_set< std::string > &	face_attr_exclude = {},
		bool	copy = false
	)

Creates a vtkPolyData object from a point cloud or triangle mesh. The returned vtkPolyData object may directly use the memory of the tensors stored inside the Geometry object. Therefore, the Geometry object must be kept alive until the returned vtkPolyData object is deleted.

Parameters

geometry	Open3D geometry object, e.g., a TriangleMesh.
copy	If true always create a copy of the data.
point_attr_include	A set of keys to select which point/vertex attributes should be added. Note that the primary key may be included and will silently be ignored.
face_attr_include	A set of keys to select which face attributes should be added. Note that the primary key may be included and will silently be ignored.
point_attr_exclude	A set of keys for which point/vertex attributes will not be added to the vtkPolyData. The exclusion set has precedence over the included keys.
face_attr_exclude	A set of keys for which face attributes will not be added to the vtkPolyData. The exclusion set has precedence over the included keys.

DtypeToVtkType()

int open3d::t::geometry::vtkutils::DtypeToVtkType

(

const core::Dtype &

dtype

)

Returns the corresponding vtk data type for core::Dtype Logs an error if no conversion exists.

ExtrudeLinearLineSet()

LineSet open3d::t::geometry::vtkutils::ExtrudeLinearLineSet	(	const PointCloud &	pointcloud,
		const core::Tensor &	vector,
		double	scale,
		bool	capping
	)

Sweeps the geometry along a direction vector.

Parameters

pointcloud	A point cloud.
vector	The direction vector.
scale	Scalar factor which essentially scales the direction vector.
capping	If true adds caps to the mesh.

Returns

A triangle mesh with the result of the sweep operation.

ExtrudeLinearTriangleMesh()

TriangleMesh open3d::t::geometry::vtkutils::ExtrudeLinearTriangleMesh	(	const Geometry &	geometry,
		const core::Tensor &	vector,
		double	scale,
		bool	capping
	)

Sweeps the geometry along a direction vector.

Parameters

geometry	Open3D geometry object, e.g., a TriangleMesh.
vector	The direction vector.
scale	Scalar factor which essentially scales the direction vector.
capping	If true adds caps to the mesh.

Returns

A triangle mesh with the result of the sweep operation.

ExtrudeRotationLineSet()

LineSet open3d::t::geometry::vtkutils::ExtrudeRotationLineSet	(	const PointCloud &	pointcloud,
		double	angle,
		const core::Tensor &	axis,
		int	resolution = 16,
		double	translation = 0.0,
		bool	capping = true
	)

Sweeps the geometry rotationally about an axis.

Parameters

pointcloud	A point cloud.
angle	The rotation angle in degree.
axis	The rotation axis.
resolution	The resolution defines the number of intermediate sweeps about the rotation axis.
translation	The translation along the rotation axis.
capping	If true adds caps to the mesh.

Returns

A line set with the result of the sweep operation.

ExtrudeRotationTriangleMesh()

TriangleMesh open3d::t::geometry::vtkutils::ExtrudeRotationTriangleMesh	(	const Geometry &	geometry,
		double	angle,
		const core::Tensor &	axis,
		int	resolution = 16,
		double	translation = 0.0,
		bool	capping = true
	)

Sweeps the geometry rotationally about an axis.

Parameters

geometry	Open3D geometry object, e.g., a TriangleMesh.
angle	The rotation angle in degree.
axis	The rotation axis.
resolution	The resolution defines the number of intermediate sweeps about the rotation axis.
translation	The translation along the rotation axis.
capping	If true adds caps to the mesh.

Returns

A triangle mesh with the result of the sweep operation.