Error Creating Mesh Representation

M by Markus on 29 May 2024, edited 29 May 2024 #

Hi,

I'm trying to create mesh representation following code examples from the docs:

# Let's create a new project using millimeters with a single furniture element at the origin.

model = run("project.create_file")

run("root.create_entity", model, ifc_class="IfcProject")

run("unit.assign_unit", model)



# We want our representation to be the 3D body of the element.

# This representation context is only created once per project.

# You must reuse the same body context every time you create a new representation.

model3d = run("context.add_context", model, context_type="Model")

body = run("context.add_context", model,

    context_type="Model", context_identifier="Body", target_view="MODEL_VIEW", parent=model3d)



# Create our element with an object placement.

element = run("root.create_entity", model, ifc_class="IfcFurniture")

run("geometry.edit_object_placement", model, product=element)



# Let's create our representation!

# See below sections for examples on how to create representations.

# These vertices and faces represent a 2m square 1m high pyramid in SI units.

# Note how they are nested lists. Each nested list represents a "mesh". There may be multiple meshes.

vertices = [[(0.,0.,0.), (0.,2.,0.), (2.,2.,0.), (2.,0.,0.), (1.,1.,1.)]]

faces = [[(0,1,2,3), (0,4,1), (1,4,2), (2,4,3), (3,4,0)]]

representation = run("geometry.add_mesh_representation", model, context=body, vertices=vertices, faces=faces)



# Assign our new body representation back to our element

run("geometry.assign_representation", model, product=element, representation=representation)

I have the latest ifcopenshell version: 0.7.0.240521 - pypi_0

The Error:

TypeError Traceback (most recent call last)

Cell In[50], line 23

 21 vertices = [[(0.,0.,0.), (0.,2.,0.), (2.,2.,0.), (2.,0.,0.), (1.,1.,1.)]]

 22 faces = [[(0,1,2,3), (0,4,1), (1,4,2), (2,4,3), (3,4,0)]]

---> 23 representation = run("geometry.add_mesh_representation", model, context=body, vertices=vertices, faces=faces)

 25 # Assign our new body representation back to our element

 26 run("geometry.assign_representation", model, product=element, representation=representation)

File c:\Users\Markus\anaconda3\envs\gnn2\Lib\site-packages\ifcopenshell\api__init__.py:184, in run(usecase_path, ifc_file, should_run_listeners, **settings)

182     CACHED_USECASES[usecase_path] = usecase_function

183 if ifc_file:

--> 184 return usecase_function(ifc_file, should_run_listeners=should_run_listeners, **settings)

185 return usecase_function(should_run_listeners=should_run_listeners, **settings)

187 if should_run_listeners:

File c:\Users\Markus\anaconda3\envs\gnn2\Lib\site-packages\ifcopenshell\api__init__.py:344, in wrap_usecase.<locals>.wrapper(should_run_listeners, *args, **settings)

341     usecase_path, settings = ARGUMENTS_DEPRECATION[usecase_path](usecase_path, settings)

343 try:

--> 344 result = usecase(*args, **settings)

345 except NotImplementedError as e:

346     if not e.args[0].startswith(f"{usecase.__name__}()"):

347         # signature errors typically start with function name

348         # e.g. "TypeError: edit_library() got an unexpected keyword argument 'test'"

349         # otherwise it's an error inside api call and we shouldn't get in the way

TypeError: add_mesh_representation() missing 1 required positional argument: 'edges'

M by Markus on 29 May 2024 #

I cant find 'edges' in the docs..

M by Markus on 29 May 2024 # +1 votes

Solved: Add an empty list

vertices = [[(0.,0.,0.), (0.,2.,0.), (2.,2.,0.), (2.,0.,0.), (1.,1.,1.)]]

faces = [[(0,1,2,3), (0,4,1), (1,4,2), (2,4,3), (3,4,0)]]

edges = [[]]  # Empty edges list



# Create the mesh representation

representation = run("geometry.add_mesh_representation", model, context=body, vertices=vertices, faces=faces, edges=edges)