compas.datastructures.mesh_collapse_edge

compas.datastructures.mesh_collapse_edge(mesh, u, v, t=0.5, allow_boundary=False, fixed=None)

Collapse an edge to its first or second vertex, or to an intermediate point.

Parameters

• mesh (compas.datastructures.Mesh) – Instance of a mesh.

• u (str) – The first vertex of the (half-) edge.

• v (str) – The second vertex of the (half-) edge.

• t (float (0.5)) – Determines where to collapse to. If t == 0.0 collapse to u. If t == 1.0 collapse to v. If 0.0 < t < 1.0, collapse to a point between u and v.

• allow_boundary (bool (False)) – Allow collapses involving boundary vertices.

• fixed (list (None)) – A list of identifiers of vertices that should stay fixed.

Returns

None

Raises

ValueError – If u and v are not neighbors.