open3d.geometry.TetraMesh

class open3d.geometry.TetraMesh

TetraMesh class. Tetra mesh contains vertices and tetrahedra represented by the indices to the vertices.

class Type

Enum class for Geometry types.

HalfEdgeTriangleMesh = <Type.HalfEdgeTriangleMesh: 7>
Image = <Type.Image: 8>
LineSet = <Type.LineSet: 4>
PointCloud = <Type.PointCloud: 1>
RGBDImage = <Type.RGBDImage: 9>
TetraMesh = <Type.TetraMesh: 10>
TriangleMesh = <Type.TriangleMesh: 6>
Unspecified = <Type.Unspecified: 0>
VoxelGrid = <Type.VoxelGrid: 2>
property value
__init__(*args, **kwargs)

Overloaded function.

  1. __init__(self: open3d.cpu.pybind.geometry.TetraMesh) -> None

Default constructor

  1. __init__(self: open3d.cpu.pybind.geometry.TetraMesh, arg0: open3d.cpu.pybind.geometry.TetraMesh) -> None

Copy constructor

  1. __init__(self: open3d.cpu.pybind.geometry.TetraMesh, vertices: open3d.cpu.pybind.utility.Vector3dVector, tetras: open3d.cpu.pybind.utility.Vector4iVector) -> None

Create a tetrahedra mesh from vertices and tetra indices

clear(self)

Clear all elements in the geometry.

Returns

open3d.geometry.Geometry

compute_convex_hull(self)

Computes the convex hull of the triangle mesh.

Returns

Tuple[open3d.geometry.TriangleMesh, List[int]]

static create_from_point_cloud(point_cloud)

Function to create a tetrahedral mesh from a point cloud.

Parameters

point_cloud (open3d.geometry.PointCloud) – A PointCloud.

Returns

Tuple[open3d.geometry.TetraMesh, List[int]]

dimension(self)

Returns whether the geometry is 2D or 3D.

Returns

int

extract_triangle_mesh(self, values, level)

Function that generates a triangle mesh of the specified iso-surface.

Parameters

  • values (open3d.utility.DoubleVector) – Vector with a scalar value for each vertex in the tetra mesh

  • level (float) – A scalar which defines the level-set to extract

Returns

open3d.geometry.TriangleMesh

get_axis_aligned_bounding_box(self)

Returns an axis-aligned bounding box of the geometry.

Returns

open3d.geometry.AxisAlignedBoundingBox

get_center(self)

Returns the center of the geometry coordinates.

Returns

numpy.ndarray[numpy.float64[3, 1]]

get_geometry_type(self)

Returns one of registered geometry types.

Returns

open3d.geometry.Geometry.GeometryType

get_max_bound(self)

Returns max bounds for geometry coordinates.

Returns

numpy.ndarray[numpy.float64[3, 1]]

get_min_bound(self)

Returns min bounds for geometry coordinates.

Returns

numpy.ndarray[numpy.float64[3, 1]]

get_minimal_oriented_bounding_box(self: open3d.cpu.pybind.geometry.Geometry3D, robust: bool = False) → open3d::geometry::OrientedBoundingBox

Returns the minimal oriented bounding box for the geometry.

Creates the oriented bounding box with the smallest volume. The algorithm makes use of the fact that at least one edge of the convex hull must be collinear with an edge of the minimum bounding box: for each triangle in the convex hull, calculate the minimal axis aligned box in the frame of that triangle. at the end, return the box with the smallest volume

Parameters

robust (bool) – If set to true uses a more robust method which works in degenerate cases but introduces noise to the points coordinates.

Returns

The oriented bounding box. The bounding box is oriented such that its volume is minimized.

Return type

open3d.geometry.OrientedBoundingBox

get_oriented_bounding_box(self: open3d.cpu.pybind.geometry.Geometry3D, robust: bool = False) → open3d::geometry::OrientedBoundingBox

Returns the oriented bounding box for the geometry.

Computes the oriented bounding box based on the PCA of the convex hull. The returned bounding box is an approximation to the minimal bounding box.

Parameters

robust (bool) – If set to true uses a more robust method which works in degenerate cases but introduces noise to the points coordinates.

Returns

The oriented bounding box. The bounding box is oriented such that the axes are ordered with respect to the principal components.

Return type

open3d.geometry.OrientedBoundingBox

static get_rotation_matrix_from_axis_angle(rotation: numpy.ndarray[numpy.float64[3, 1]]) → numpy.ndarray[numpy.float64[3, 3]]
static get_rotation_matrix_from_quaternion(rotation: numpy.ndarray[numpy.float64[4, 1]]) → numpy.ndarray[numpy.float64[3, 3]]
static get_rotation_matrix_from_xyz(rotation: numpy.ndarray[numpy.float64[3, 1]]) → numpy.ndarray[numpy.float64[3, 3]]
static get_rotation_matrix_from_xzy(rotation: numpy.ndarray[numpy.float64[3, 1]]) → numpy.ndarray[numpy.float64[3, 3]]
static get_rotation_matrix_from_yxz(rotation: numpy.ndarray[numpy.float64[3, 1]]) → numpy.ndarray[numpy.float64[3, 3]]
static get_rotation_matrix_from_yzx(rotation: numpy.ndarray[numpy.float64[3, 1]]) → numpy.ndarray[numpy.float64[3, 3]]
static get_rotation_matrix_from_zxy(rotation: numpy.ndarray[numpy.float64[3, 1]]) → numpy.ndarray[numpy.float64[3, 3]]
static get_rotation_matrix_from_zyx(rotation: numpy.ndarray[numpy.float64[3, 1]]) → numpy.ndarray[numpy.float64[3, 3]]
has_tetras(self)

Returns True if the mesh contains tetras.

Returns

bool

has_vertex_colors(self)

Returns True if the mesh contains vertex colors.

Returns

bool

has_vertex_normals(self)

Returns True if the mesh contains vertex normals.

Returns

bool

has_vertices(self)

Returns True if the mesh contains vertices.

Returns

bool

is_empty(self)

Returns True iff the geometry is empty.

Returns

bool

normalize_normals(self)

Normalize vertex normals to length 1.

Returns

open3d.geometry.MeshBase

paint_uniform_color(self, color)

Assigns each vertex in the MeshBase the same color.

Parameters

color (numpy.ndarray[numpy.float64[3, 1]]) – RGB colors of vertices.

Returns

open3d.geometry.MeshBase

remove_degenerate_tetras(self)

Function that removes degenerate tetras, i.e., tetras that references a single vertex multiple times in a single tetra. They are usually the product of removing duplicated vertices.

Returns

open3d.geometry.TetraMesh

remove_duplicated_tetras(self)

Function that removes duplicated tetras, i.e., removes tetras that reference the same four vertices, independent of their order.

Returns

open3d.geometry.TetraMesh

remove_duplicated_vertices(self)

Function that removes duplicated vertices, i.e., vertices that have identical coordinates.

Returns

open3d.geometry.TetraMesh

remove_unreferenced_vertices(self)

This function removes vertices from the tetra mesh that are not referenced in any tetra of the mesh.

Returns

open3d.geometry.TetraMesh

rotate(*args, **kwargs)

Overloaded function.

  1. rotate(self, R)

    Apply rotation to the geometry coordinates and normals.

Parameters

R (numpy.ndarray[numpy.float64[3, 3]]) – The rotation matrix

Returns

open3d.geometry.Geometry3D

  1. rotate(self, R, center)

    Apply rotation to the geometry coordinates and normals.

Parameters

  • R (numpy.ndarray[numpy.float64[3, 3]]) – The rotation matrix

  • center (numpy.ndarray[numpy.float64[3, 1]]) – Rotation center used for transformation.

Returns

open3d.geometry.Geometry3D

scale(*args, **kwargs)

Overloaded function.

  1. scale(self, scale, center)

    Apply scaling to the geometry coordinates.

Parameters

  • scale (float) – The scale parameter that is multiplied to the points/vertices of the geometry.

  • center (numpy.ndarray[numpy.float64[3, 1]]) – Scale center used for transformation.

Returns

open3d.geometry.Geometry3D

  1. scale(self, scale, center)

    Apply scaling to the geometry coordinates.

Parameters

  • scale (float) – The scale parameter that is multiplied to the points/vertices of the geometry.

  • center (numpy.ndarray[numpy.float64[3, 1]]) – Scale center used for transformation.

Returns

open3d.geometry.Geometry3D

transform(self, arg0)

Apply transformation (4x4 matrix) to the geometry coordinates.

Parameters

arg0 (numpy.ndarray[numpy.float64[4, 4]]) –

Returns

open3d.geometry.Geometry3D

translate(self, translation, relative=True)

Apply translation to the geometry coordinates.

Parameters

  • translation (numpy.ndarray[numpy.float64[3, 1]]) – A 3D vector to transform the geometry

  • relative (bool, optional, default=True) – If true, the translation vector is directly added to the geometry coordinates. Otherwise, the center is moved to the translation vector.

Returns

open3d.geometry.Geometry3D

HalfEdgeTriangleMesh = <Type.HalfEdgeTriangleMesh: 7>
Image = <Type.Image: 8>
LineSet = <Type.LineSet: 4>
PointCloud = <Type.PointCloud: 1>
RGBDImage = <Type.RGBDImage: 9>
TetraMesh = <Type.TetraMesh: 10>
TriangleMesh = <Type.TriangleMesh: 6>
Unspecified = <Type.Unspecified: 0>
VoxelGrid = <Type.VoxelGrid: 2>
property tetras

List of tetras denoted by the index of points forming the tetra.

Type

int64 array of shape (num_tetras, 4), use numpy.asarray() to access data

property vertex_colors

RGB colors of vertices.

Type

float64 array of shape (num_vertices, 3), range [0, 1] , use numpy.asarray() to access data

property vertex_normals

Vertex normals.

Type

float64 array of shape (num_vertices, 3), use numpy.asarray() to access data

property vertices

Vertex coordinates.

Type

float64 array of shape (num_vertices, 3), use numpy.asarray() to access data