ms.write_voxels(mesh=True) fails

[RZandomeni]

Description:

When calling mesh.write_voxels() with mesh=True and a voxelized mesh, the function crashes with:

TypeError: int() argument must be a string, a bytes-like object or a real number, not 'list'

Steps to reproduce:

1. Create an RVE using examples/RVE_generation/create_rve.py.
2. Add mesh=True in ms.write_voxels(mesh=True).

Observed behavior:

The function fails at this line in api.py: "Values": [int(val) for val in self.mesh.voxel_dict.values()],

        if mesh:
            structure['Mesh'] = {
                "Nodes": {
                    "Description": 'Nodal coordinates',
                    "Type": 'float',
                    "Shape": self.mesh.nodes.shape,
                    "Values": [list(val) for val in self.mesh.nodes],
                },
                "Voxels": {
                    "Description": 'Node list per voxel',
                    "Type": 'int',
                    "Shape": (len(self.mesh.voxel_dict.keys()), 8),
                    "Values": [int(val) for val in self.mesh.voxel_dict.values()],
                }
            }

Expected behavior:

write_voxels() should correctly serialize the node connectivity for each voxel in JSON.

Proposed fix:

Replace:
"Values": [int(val) for val in self.mesh.voxel_dict.values()],
with:
"Values": [list(val) for val in self.mesh.voxel_dict.values()],. This ensures the 8-node connectivity of each voxel is preserved in the JSON output.

System

• Kanapy version: v6.5.3-post1-46-g82139362
• Python version: 3.10.18