Forums Solaris and Karma How to rename/remove/reparent prims with Python?

How to rename/remove/reparent prims with Python?

   211   2   1
User Avatar
alexmajewski
Member
27 posts
Joined: 8月 2017
Offline
 
How to do what Restructure Scene Graph LOP does, but with Python?
 Report
User Avatar
goldleaf
スタッフ
4199 posts
Joined: 9月 2007
Offline
 
That node is currently implemented in Python, you can look inside and learn from it. There are also unit tests on the OpenUSD GitHub repo, that are written in Python that use Sdf Changeblocks and do some of these same editing operations.
I'm o.d.d.
 Report
User Avatar
alexmajewski
Member
27 posts
Joined: 8月 2017
Offline
 
Thanks goldleaf I did like you said with full success.

If anyone finds this post in the future, here's a minimal example of reparenting a prim (it requires the layer to be flattened first):
from pxr import Sdf
node = hou.pwd()
layer = node.editableLayer()

cube_path = Sdf.Path("/Cube")
new_cube_path = Sdf.Path("/Objects/Cube")

edit = Sdf.BatchNamespaceEdit()
edit.Add(cube_path, new_cube_path)
    
if not layer.Apply(edit):
    raise Exception("Failed to apply layer edit!")
And to my understanding, if we plan to make more operations, we should add with Sdf.ChangeBlock():before the edit = Sdf.BatchNamespaceEdit()
Other ways and examples on reparenting, renaming or removing can be found in the USD Survival Guide, here. [lucascheller.github.io]
 Report
  • Quick Links