astrovascpy.vtk_io

file taken from https://github.com/eleftherioszisis/VasculatureRepair.

Functions

create_polydata_from_data(points, edges[, ...])	Create a PolyData vtk object from a set of points.
vtk_attribute_array(name, arr)	Create a cell array with specified name and assigns the numpy array arr.
vtk_lines(edges)	Convert a list of edges into vtk lines.
vtk_loader(filename)	Extract from a vtk file the points, edges, radii and types.
vtk_points(points)	Convert an array of numpy points to vtk points.
vtk_writer(filename, points, edges, radii, types)	Create a vtk legacy file and populate it with a polydata object.

astrovascpy.vtk_io.create_polydata_from_data(points, edges, attribute_dict={})

Create a PolyData vtk object from a set of points.

Points are connected with edges and optionally have a set of attributes.

Parameters:

• points (np.array) – section’s points.

• edges (np.array) – edges of the graph.

• attribute_dict (dict) – to store attributes.

Returns:

PolyData vtk object.

Return type:

vtkPolyData

astrovascpy.vtk_io.vtk_attribute_array(name, arr)

Create a cell array with specified name and assigns the numpy array arr.

Parameters:

• name (str) – name of the cell array.

• arr (np.array) – assigned to the cell array.

Returns:

cell array with specified name and assigns the numpy array arr.

Return type:

vtkCellArray

astrovascpy.vtk_io.vtk_lines(edges)

Convert a list of edges into vtk lines.

Parameters:

edges (np.array) – edges of the graph.

Returns:

vtk lines.

Return type:

vtkCellArray

astrovascpy.vtk_io.vtk_loader(filename)

Extract from a vtk file the points, edges, radii and types.

Parameters:

filename (str) – name of the file.

Returns:

points, edges and radii.

Return type:

np.array

astrovascpy.vtk_io.vtk_points(points)

Convert an array of numpy points to vtk points.

Parameters:

points (np.array) – section’ points.

Returns:

3D points, an array of vx-vy-vz triplets accessible by (point or cell) id.

Return type:

vtkPoints

astrovascpy.vtk_io.vtk_writer(filename, points, edges, radii, types, mode='ascii', extra_properties=None)

Create a vtk legacy file and populate it with a polydata object.

Polydata object is generated using the points, edges, radii and types.

Parameters:

• filename (str) – name of the file.

• points (np.array) – shape: (n_nodes, 3).

• edges (np.array) – shape: (n_edges, 2).

• radii (np.array) – shape: (n_edges, 2).

• types (np.array) – shape: (n_edges, 2).

• mode (str) – ascii or binary

• extra_properties (iterable of callables) – add extra property computation functions

• included. (that are not)