Type error in TriangleMesh::create_from_point_cloud_alpha_shape

[FedeMiorelli]

I am not able to use the function create_from_point_cloud_alpha_shape due to type errors.

Below is a simple code to reproduce, and the error displayed.

import open3d as o3d
import numpy as np

pc = o3d.geometry.PointCloud()
pc.points = o3d.utility.Vector3dVector(np.random.randn(100,3))
T_recon = o3d.geometry.TriangleMesh()

alpha = 1.0
T_recon.create_from_point_cloud_alpha_shape(pc, alpha)

Traceback (most recent call last):
  File "C:\Temp\test_open3d.py", line 16, in <module>
    T_recon.create_from_point_cloud_alpha_shape(pc, alpha)
TypeError: create_from_point_cloud_alpha_shape(): incompatible function arguments. The following argument types are supported:
    1. (pcd: open3d.open3d.geometry.PointCloud, alpha: float, tetra_mesh: open3d::geometry::TetraMesh, pt_map: List[int]) -> open3d.open3d.geometry.TriangleMesh

Invoked with: geometry::PointCloud with 100 points., 1.0

Open3d v0.9.0, Windows 10 64 bit, Python 3.7.6.0
Wheel installed from https://www.lfd.uci.edu/~gohlke/pythonlibs/

[griegler]

Addressed in #1624.

[FedeMiorelli]

@griegler Thank you!

Is there a workaround I could use from Python until this is released and packages are updated?
Like creating instances of the two additional parameters in the same way they would be specified inside C++ if they were not passed.

[griegler]

You could use something like:

tetra_mesh, pt_map = o3d.geometry.TetraMesh.create_from_point_cloud(pcd)
mesh = o3d.geometry.TriangleMesh.create_from_point_cloud_alpha_shape(pcd, alpha, tetra_mesh, pt_map)

[FedeMiorelli]

That works, thanks