pysdic.Mesh.connectivity

property Mesh.connectivity: Connectivity

[Get or Set] The connectivity of the mesh in a Connectivity instance.

The connectivity is represented as a Connectivity instance with shape (\(N_e\), \(N_{vpe}\)) where \(N_e\) is the number of elements and \(N_{vpe}\) is the number of vertices per element.

Note

This property is settable.

Warning

If the connectivity is changed, the vertices and properties may become invalid. Please ensure to recompute or update them accordingly.

To change the number of elements, it is recommended to create a new Mesh instance with the updated vertices and connectivity rather than modifying the connectivity in place. For memory considerations, you can also modify the connectivity in place, but please ensure that all necessary checks are performed before using this mode.

Parameters:

value (Union[Connectivity, ArrayLike]) – The new connectivity for the mesh with shape (\(N_e\), \(N_{vpe}\)).

Returns:

The connectivity of the mesh as a Connectivity instance of shape (\(N_e\), \(N_{vpe}\)).

Return type:

Connectivity

Examples

Create a simple Mesh instance.

import numpy as np
from pysdic import Mesh, PointCloud

points = np.array([[0, 0, 0], [1, 0, 0], [0, 1, 0], [0, 0, 1]])
connectivity = np.array([[0, 1, 2], [0, 1, 3], [0, 2, 3], [1, 2, 3]])
mesh3d = Mesh(points, connectivity, element_type="triangle_3")

Access the connectivity of the mesh.

print(mesh3d.connectivity)
# Output: Connectivity with 4 elements [[0, 1, 2], [0, 1, 3], [0, 2, 3], [1, 2, 3]]