Compiling Fail cad_to_dagmc

[gglamzn]

No description provided.

[shimwell]

Thanks for making use of the package. Was there an error with the code that you wanted to share?

[gglamzn]

Hi,

I'm currently trying to do some simulations on .step files from my CAD Software.

I have attached my Python functions and an Image of my .step geometry:

def output_path(output_dir,output_file_name):
    """
    Useful for having the ouput_path of the h5m file in the other functions.

    Args:
        output_dir (str): The directory where the output h5m file will be saved.
        output_file_name (str) : The name of h5m output file.
    
    Returns:
            output_path (str): The path of the h5m file

   """
    
    output_path = os.path.join(output_dir, output_file_name)
    output_path
    return output_path

def cad_geometry_to_h5m(material_tags_list,input_file_path,output_dir,output_file_name):
    """
    Converts a STEP file to a DAGMC h5m file usable for simulations on OpenMC.

    Args:
        material_tags_list (list): The materials tags that will be applied to the volumes.
        input_file_path (str): The path of the step to convert 
        output_dir (str): The directory where the output h5m file will be saved.
        output_file_name (str) : The name of h5m output file.
    
    Returns:
            None
   """
    result = cq.importers.importStep(input_file_path)
    assembly = cq.Assembly()
    assembly.add(result)
    
    my_model = CadToDagmc()
    
    my_model.add_cadquery_object( 
        cadquery_object=assembly,
        material_tags=material_tags_list)
    
    # Export the DAGMC h5m file to the specified output directory
    h5m_path=output_path(output_dir,output_file_name)
    my_model.export_dagmc_h5m_file(h5m_path, min_mesh_size=5, max_mesh_size=20)
    
    return None

material_tags_list=['mat1']  #arbitrary , would be defined later , during the simulation process

#To fill according to your work directory
input_file_path=
output_dir=

output_file_name='compass_geometries.h5m'
cad_geometry_to_h5m(material_tags_list,input_file_path,output_dir,output_file_name)

Replace placeholders like input_file_path and output_dir with your actual file paths and directories.

There is an IMAGE of my .step geometry :

It is too bad that I can't share the file

After compiling , for actually quite some time , my machine Always freezes (i tried several times to compile), and I get this on my terminal :

I am not really familiar with CAD geometry but it seems to me that my geometry I relatively basic , so I may have done some mistakes somewhere.

I would like your input in my issue .
Thanks in advance.

[shimwell]

Looks like it is pausing on the gmeshing part. You could tried manually meshing with gmsh and see if that is possible.

[gglamzn]

Hi,

If i'm meshing with gmsh , would not the meshing still be operated by the CadtoDagMC function when I will use it ?

[shimwell]

The manual meshing with gmsh is mainly to check if the step geometry has errors which mean it can't be meshed. Current Cad-To-Dagmc only offers one mesher whioch is gmsh so if gmesh cna't manually mesh the geometry then Cad-To-Dagmc also can't mesh your geometry.

If you are able to successfully mesh manually in gmsh then you have the option to save the msh file and Cad-To-Dagmc can import the msh file with its MeshToDagmc class https://github.com/fusion-energy/cad_to_dagmc/blob/5cd38e4ddb9c1db86192bace38629a341c41d8cb/src/cad_to_dagmc/core.py#L328C7-L328C18