Zero gravity command history not valid in python / vs code / omni code

adam.wayne.hughes · August 16, 2022, 3:33pm

physx.binding not valid and <omni.physx not valid… what to do?

Also, was thinking of running a recording type API to just record my clicks but i couldnt find anything, especially something that simple.

Trying to finish this for the contest.

import omni.kit.commands
from omni import physx.bindings._physx

omni.kit.commands.execute(‘SelectPrims’,
old_selected_paths=[‘/World/Sphere_01’],
new_selected_paths=[‘/World/Sphere_01’, ‘/World/Sphere_02’, ‘/World/Sphere_03’, ‘/World/Sphere_04’, ‘/World/Sphere_05’, ‘/World/Sphere_06’, ‘/World/Sphere_07’, ‘/World/Sphere_08’, ‘/World/Sphere_09’, ‘/World/Sphere_10’, ‘/World/Sphere_11’, ‘/World/Sphere_12’, ‘/World/Sphere_13’, ‘/World/Sphere_14’],
expand_in_stage=True)

omni.kit.commands.execute(‘PlacementModeTransform’,
physx_authoring=<omni.physx.bindings._physx.IPhysxAuthoring object at 0x000001DF849FCAF0>,
capture_session_id=8)

omni.kit.commands.execute(‘PlacementModeTransform’,
physx_authoring=<omni.physx.bindings._physx.IPhysxAuthoring object at 0x000001DF849FCAF0>,
capture_session_id=9)

These codes above recorded by commands in code dont work. Here is the vs code and with “”" what i need in between sections documented"“”

see code

            omni.kit.commands.execute(
                "SelectPrims",
                old_selected_paths=[],
                new_selected_paths=[
                    "/World/Sphere",
                    "/World/Sphere_01",
                    "/World/Sphere_02",
                    "/World/Sphere_03",
                    "/World/Sphere_04",
                    "/World/Sphere_05",
                    "/World/Sphere_06",
                    "/World/Sphere_07",
                    "/World/Sphere_08",
                    "/World/Sphere_09",
                    "/World/Sphere_10",
                    "/World/Sphere_11",
                    "/World/Sphere_12",
                    "/World/Sphere_13",
                    "/World/Sphere_14",
                ],
                expand_in_stage=True,
            )

“”" I want to have the previous seleted prims hold the gravity option for dynamic"“”

            omni.kit.commands.execute(
                "SelectPrims",
                old_selected_paths=[
                    "/World/Sphere",
                    "/World/Sphere_01",
                    "/World/Sphere_02",
                    "/World/Sphere_03",
                    "/World/Sphere_04",
                    "/World/Sphere_05",
                    "/World/Sphere_06",
                    "/World/Sphere_07",
                    "/World/Sphere_08",
                    "/World/Sphere_09",
                    "/World/Sphere_10",
                    "/World/Sphere_11",
                    "/World/Sphere_12",
                    "/World/Sphere_13",
                    "/World/Sphere_14",
                ],
                new_selected_paths=["/World/Plane"],
                expand_in_stage=True,
            )

“”" I want uselect the old, select new, new seleted prims hold the gravity option for static"“”
omni.kit.commands.execute(
“SelectPrims”,
old_selected_paths=[“/World/Plane”],
new_selected_paths=[
“/World/Sphere”,
“/World/Sphere_01”,
“/World/Sphere_02”,
“/World/Sphere_03”,
“/World/Sphere_04”,
“/World/Sphere_05”,
“/World/Sphere_06”,
“/World/Sphere_07”,
“/World/Sphere_08”,
“/World/Sphere_09”,
“/World/Sphere_10”,
“/World/Sphere_11”,
“/World/Sphere_12”,
“/World/Sphere_13”,
“/World/Sphere_14”,
],
expand_in_stage=True,
)

“”" I want seleted prims to play gravity option for animation"“”

adam.wayne.hughes · August 16, 2022, 5:31pm

Here is the vs code of what I am trying to accomplish. “”" states the goal in between selections"“”

omni.kit.commands.execute(
“SelectPrims”,
old_selected_paths=,
new_selected_paths=[
“/World/Sphere”,
“/World/Sphere_01”,
“/World/Sphere_02”,
“/World/Sphere_03”,
“/World/Sphere_04”,
“/World/Sphere_05”,
“/World/Sphere_06”,
“/World/Sphere_07”,
“/World/Sphere_08”,
“/World/Sphere_09”,
“/World/Sphere_10”,
“/World/Sphere_11”,
“/World/Sphere_12”,
“/World/Sphere_13”,
“/World/Sphere_14”,
],
expand_in_stage=True,
)
“”" I want to have the previous seleted prims hold the gravity option for dynamic"“”

            omni.kit.commands.execute(
                "SelectPrims",
                old_selected_paths=[
                    "/World/Sphere",
                    "/World/Sphere_01",
                    "/World/Sphere_02",
                    "/World/Sphere_03",
                    "/World/Sphere_04",
                    "/World/Sphere_05",
                    "/World/Sphere_06",
                    "/World/Sphere_07",
                    "/World/Sphere_08",
                    "/World/Sphere_09",
                    "/World/Sphere_10",
                    "/World/Sphere_11",
                    "/World/Sphere_12",
                    "/World/Sphere_13",
                    "/World/Sphere_14",
                ],
                new_selected_paths=["/World/Plane"],
                expand_in_stage=True,
            )

“”" I want uselect the old, select new, new seleted prims hold the gravity option for static"“”
omni.kit.commands.execute(
“SelectPrims”,
old_selected_paths=[“/World/Plane”],
new_selected_paths=[
“/World/Sphere”,
“/World/Sphere_01”,
“/World/Sphere_02”,
“/World/Sphere_03”,
“/World/Sphere_04”,
“/World/Sphere_05”,
“/World/Sphere_06”,
“/World/Sphere_07”,
“/World/Sphere_08”,
“/World/Sphere_09”,
“/World/Sphere_10”,
“/World/Sphere_11”,
“/World/Sphere_12”,
“/World/Sphere_13”,
“/World/Sphere_14”,
],
expand_in_stage=True,
)

“”" I want seleted prims to play gravity option for animation"“”

mati-nvidia · August 16, 2022, 10:10pm

Hi @adam.wayne.hughes. Welcome! You have the right idea. I took a look at this, but I don’t think using the PlacementModeTransform Command is going to be very straight-forward. I reached out to the devs to see what the intended usage is.

adam.wayne.hughes · August 16, 2022, 10:34pm

Thanks, cant wait to hear back from them. I am adding textures and a few more physx options hopefully to make this fun. Im uploading a video to youtube now of what I have set so far. Its not much but its been a learning experience for me. Just using VS code is a learning experience all in itself. Here is the link tell me waht you think. Also have any ideas of what would be cool at add to this?

mind taking a look?

Learn Every Day - Omniverse Code + Python + VS Code - YouTube

mati-nvidia · August 16, 2022, 10:38pm

Says the video is unavailable. Looks like it’s private. Try unlisted?

adam.wayne.hughes · August 16, 2022, 10:40pm

its just uploading still, give it like 5 min, its running the ad verification atm

mati-nvidia · August 16, 2022, 10:46pm

Looks great! Try the CreateReference command. Drag and drop a USD, USDZ, OBJ, or glTF into the viewport or Stage window. That way you could scatter and drop more interesting meshes. :)

AlesBorovicka · August 17, 2022, 6:59am

Hi,
yes its possible to use zero g through commands, for dropping, this is what you might want to use (copied from zero gravity python tests):

DROP_WAIT_FRAMES = 280
ENABLED_WAIT_FRAMES = 10
ACTION_WAIT_FRAMES = 5

        omni.kit.commands.execute("ZeroGravitySetEnabled", enabled=True)
        for _ in range(ENABLED_WAIT_FRAMES):
            await omni.kit.app.get_app().next_update_async()
        self._usd_context.get_selection().set_selected_prim_paths(["/World/Plane"], True)
        omni.kit.commands.execute("ZeroGravitySetSelectedStatic")
        for _ in range(ACTION_WAIT_FRAMES):
            await omni.kit.app.get_app().next_update_async()
        self._usd_context.get_selection().set_selected_prim_paths(["/World/Plane"], False)
        selected_paths = []
        for geometry in GEOMETRY:
            selected_paths.append(f"/World/{geometry}")
        self._usd_context.get_selection().set_selected_prim_paths(selected_paths, True)
        omni.kit.commands.execute("ZeroGravitySetSelectedDynamic")
        for _ in range(ACTION_WAIT_FRAMES):
            await omni.kit.app.get_app().next_update_async()
        omni.kit.commands.execute("ZeroGravitySetDropping", dropping=True)
        for _ in range(DROP_WAIT_FRAMES):
            await omni.kit.app.get_app().next_update_async()
        omni.kit.commands.execute("ZeroGravitySetDropping", dropping=False)
        for _ in range(ACTION_WAIT_FRAMES):
            await omni.kit.app.get_app().next_update_async()
        i = 0
        omni.kit.commands.execute("ZeroGravityClearAll")
        omni.kit.commands.execute("ZeroGravitySetEnabled", enabled=False)

In short:

enable zero g mode
select objects you want to collide, like a ground - set as static marker
selected objects select as dynamic marker
enable the drop
Note that some of the operations might take a bit to get processed its no an synchronous operation, so you need run some application cycles to get things running.

mati-nvidia · August 17, 2022, 3:43pm

Thanks Ales! Adam, let us know if you have any more follow up questions. We’ve also created an internal issue, OM-60160, to hopefully make this easier to discover in the future.

adam.wayne.hughes · August 19, 2022, 2:47am

Is there a reset function something like this?

omni.kit.commands.execute(‘ZeroGravityTransformReset’)

@AlesBorovicka @mati-nvidia

or maybe something like this?

omni.kit.commands.execute(“ZeroGravitySettings”, restore=True )

AlesBorovicka · August 19, 2022, 7:02am

Looks like there is no command, but a direct python call:

get_physx_zero_gravity_interface().mark_selection("restore", "")

system · September 2, 2022, 7:02am

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Zero gravity command history not valid in python / vs code / omni code

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