Source code for entente.composite

def composite_meshes(mesh_paths):
    """
    Create a composite as a vertex-wise average of several meshes in
    correspondence. Faces, groups, and other attributes are loaded from the
    first mesh given.

    Args:
        mesh_paths (list): Paths of the meshes to average.

    Returns:
        lace.mesh.Mesh: The composite mesh.
    """
    from lace.mesh import Mesh

    if not len(mesh_paths):
        raise ValueError("Expected at least one mesh path")

    first_mesh_path, remaining_mesh_paths = mesh_paths[0], mesh_paths[1:]

    working_mesh = Mesh(filename=first_mesh_path)

    for this_mesh_path in remaining_mesh_paths:
        this_mesh = Mesh(filename=this_mesh_path)
        if not this_mesh.has_same_topology(working_mesh):
            raise ValueError(
                "Expected {} to have the same topology as {}".format(
                    this_mesh_path, first_mesh_path
                )
            )
        working_mesh.v += this_mesh.v

    working_mesh.v /= len(mesh_paths)

    return working_mesh