Isaac Sim Version
5.1.0
Operating System
Windows 11
GPU Information
- Model: RTX 5090
- Driver Version:
Detailed Description
As I known, the old forcefield API has been superseded by the new API schema named PhysxForceFieldAPI.
I have seen https://forums.developer.nvidia.com/t/force-filed-extension-removed/345686, but I still cannot find where the API is.
I only found it in USDRT, but I can’t make it work.
I tried to apply it with python:
import omni.usd
from usdrt import Gf, Sdf, Usd, ForceFieldSchema
ctx = omni.usd.get_context()
rtstage = Usd.Stage.Attach(ctx.get_stage_id())
path = "/World/WindField"
omni.kit.commands.execute('CreatePrim',
prim_path=path,
prim_type='Xform',
select_new_prim=True)
wind_xform = rtstage.GetPrimAtPath(path)
force_field_api = ForceFieldSchema.PhysxForceFieldAPI(wind_xform, "wind_field")
wind_field_api = ForceFieldSchema.PhysxForceFieldWindAPI(wind_xform,"wind_field")
# Also tried
#force_field_api = ForceFieldSchema.PhysxForceFieldAPI.Apply(wind_xform, "wind_field")
print(force_field_api)
And I got :
PhysxForceFieldAPI(invalid)
The “WindField” xform in Isaac-sim still not having the API.
I also check the “Edit API Schema”, and didn’t see any ForceFieldAPI.
