How to get volume name using python (surf, etc)?

Coreform Cubit Geometry
#1

Hi,

In Assemblies, the CAD shows different parts with different names; webcuts increase (even drastically) the total number of volumes:

  • after some basic tests, i understood volumes are added into blocks prior to export the mesh (1 block per original CAD part)
  • I would like to use python to automate the whole process whatever are the names and the number of volumes
  • I had a look to the python API docs/methods and so on, but i probably missed something

Step 1 : How to retrieve the volume name to build a list of all vol names?
“list names” is promissing but it returns a bool?

Thanks for the support

Paul

vol_id = cubit.parse_cubit_list('volume', 'all')
type(vol_id) # ok to retrieve the vol id

var = cubit.cmd('list names volume')
type(var) #bool not a tuple nor a list
#2

Hi @paul18fr,
i think the method you are searching for is cubit.volume(id).entity_name()

Here is an example:

#!cubit
reset
create brick x 1
webcut volume all with plane xplane offset 0 
webcut volume all with plane yplane offset 0 
webcut volume all with plane zplane offset 0 

volume 1 rename "Name_1"
volume 2 rename "Name_2"
volume 3 rename "Name_3"
volume 4 rename "Name_4"
volume 5 rename "Name_5"
volume 6 rename "Name_6"
volume 7 rename "Name_7"
volume 8 rename "Name_8"

#!python
vol_ids = cubit.parse_cubit_list('volume', 'all')

list_names = []
for id in vol_ids:
 vol = cubit.volume(id)
 list_names.append(vol.entity_name ())

for name in list_names:
 print(name)

This will output the names to the command line.
image

#3

Cubit frequently provides multiple methods to do these kinds of things. Once you have the volume id you can also use
name = cubit.get_entity_name(“volume”, id)
This is documented in Coreform Cubit User Documentation, Method Based Python.
Search for get_entity_name.

Norbert’s method is documented in Coreform Cubit User Documentation, Object Based Python. Search for entity_name.

Karl

#4

Ok, thanks for all the informations and links.

The following first basic trial works as expected. Note the “parts_name” list has been manually implemented for now (i guess original names do not include any ‘@’)

Thanks again

parts_name = ['XX', 'YY', 'ZZ', 'MM', 'NN']
vol_ids = cubit.parse_cubit_list('volume', 'all')

vol_names = []

for id in vol_ids:
    name = cubit.get_entity_name("volume", id)
    vol_names.append([name, id])
    
i = 1
for part in parts_name:
    
    for vol, id in vol_names:
        if part in vol: cubit.cmd(f'block {i} add volume {id}')
        
    cubit.cmd(f'block {i} name "{part}"')
    cubit.cmd(f'block {i} element type hex20')
    i += 1
    
    
# cubit.cmd(f"save cub5 '{os.path.join(path, file)}'")