pythonmeshmeshlabpymeshlab

PyMeshLab Saving Exception

I am trying to perform a very simple operation in pymeshlab.

  1. Import an stl
  2. Count the vertices and facets and print them in a txt file
  3. Save the mesh with a different name

I am using this as a test case having isolated the problem in the ms.save_current_mesh('Output.stl') part. I am getting an exception with no infromation.

line 19, in ms.save_current_mesh('Output.stl') pymeshlab.pmeshlab.PyMeshLabException

Here is my short script. Please note I have found a similar thread but there is no answer and I have checked using other methods and the txt file that I have permission to write files into the working directory. To test the following replace Model.stl with any stl surface geometry. I have confirmed that the GUI meshlab works perfectly with the stl I am using. Any Ideas?

import pymeshlab
#create a new MeshSet
ms = pymeshlab.MeshSet()

#load a new mesh

ms.load_new_mesh('Model.stl')
print(ms.current_mesh().vertex_number(),'vertex')
print(ms.current_mesh().face_number(), 'faces')

with open("model.txt", "w") as f:
 print("Test file output", file=f)
 print(ms.current_mesh().vertex_number(),'vertex', file=f)
 print(ms.current_mesh().face_number(), 'faces', file=f)
# save the current mesh without face color
ms.save_current_mesh('Output.stl')
Solution

  • I have solved the problem! It appears that pymeshlab uses the working directory path. If the path contains non-latin characters, it throws this generic undescriptive exception.

    I changed the working directory to one with only latin characters and it works.