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mati-nvidia/developer-office-hours/exts/maticodes.doh_2023_01_20/docs/README.md | # Developer Office Hour - 01/20/2023
This is the sample code from the Developer Office Hour held on 01/20/2023, Mati answered some developer questions
from the NVIDIA Omniverse forums regarding Kit, Omniverse Code, Python, and USD.
## Questions
- 3:57 - How do I check if a file exists using the Omni Client Library?
- 6:51 - How do I duplicate a prim?
- 13:53 - Is there an event for when a user's prim selection changes?
|
mati-nvidia/developer-office-hours/exts/maticodes.doh_2022_09_02/maticodes/doh_2022_09_02/extension.py | # SPDX-License-Identifier: Apache-2.0
import carb
import omni.ext
import omni.ui as ui
class MyWindow(ui.Window):
def __init__(self, title: str = None, **kwargs):
super().__init__(title, **kwargs)
self.frame.set_build_fn(self._build_window)
def _build_window(self):
with ui.ScrollingFrame():
with ui.VStack(height=0):
ui.Label("My Label")
def clicked():
carb.log_info("Button Clicked!")
ui.Button("Click Me", clicked_fn=clicked)
class MyExtension(omni.ext.IExt):
def on_startup(self, ext_id):
carb.log_info("[maticodes.doh_2022_09_02] Dev Office Hours Extension (2022-09-02) startup")
self._window = MyWindow("MyWindow", width=300, height=300)
def on_shutdown(self):
carb.log_info("[maticodes.doh_2022_09_02] Dev Office Hours Extension (2022-09-02) shutdown")
if self._window:
self._window.destroy()
self._window = None
|
mati-nvidia/developer-office-hours/exts/maticodes.doh_2022_09_02/maticodes/doh_2022_09_02/__init__.py | # SPDX-License-Identifier: Apache-2.0
from .extension import *
|
mati-nvidia/developer-office-hours/exts/maticodes.doh_2022_09_02/scripts/what_is_sc.py | # SPDX-License-Identifier: Apache-2.0
from omni.ui import scene as sc |
mati-nvidia/developer-office-hours/exts/maticodes.doh_2022_09_02/scripts/get_local.py | # SPDX-License-Identifier: Apache-2.0
import omni.usd
from pxr import Usd, Gf
stage = omni.usd.get_context().get_stage()
prim = stage.GetPrimAtPath("/World/Cube_01")
scale, rotate, rot_order, translate = omni.usd.get_local_transform_SRT(prim, time=Usd.TimeCode.Default())
print(scale, rotate, rot_order, translate)
# Gf.Vec3d
# (Double, Double, Double)
# Gf.Matrix4d
# (Double, Double, Double, Double)
# (Double, Double, Double, Double)
# (Double, Double, Double, Double)
# (Double, Double, Double, Double)
matrix:Gf.Matrix4d = omni.usd.get_local_transform_matrix(prim, time_code=Usd.TimeCode.Default())
print(matrix) |
mati-nvidia/developer-office-hours/exts/maticodes.doh_2022_09_02/scripts/define_ui_colors.py | # SPDX-License-Identifier: Apache-2.0
import omni.ui as ui
from omni.ui import color as cl
my_window = ui.Window("Example Window", width=300, height=300)
with my_window.frame:
with ui.VStack():
ui.Label("AABBGGRR", style={"color": 0xFF00FFFF}) # STAY AWAY FROM
ui.Label("Float RGB", style={"color": cl(1.0, 1.0, 0.0)})
ui.Label("Float RGBA", style={"color": cl(1.0, 1.0, 0.0, 0.5)})
ui.Label("Int RGB", style={"color": cl(255, 255, 0)})
ui.Label("Int RGBA", style={"color": cl(255, 255, 0, 128)})
ui.Label("Oops RGB", style={"color": cl(1, 1, 0)})
ui.Label("Web Hex RGB", style={"color": cl("#FFFF00")})
ui.Label("Web Hex rgb", style={"color": cl("#ffff00")})
ui.Label("Web Hex RGBA", style={"color": cl("#FFFF0088")})
ui.Label("Float RGB White", style={"color": cl(1.0, 1.0, 1.0)})
ui.Label("Float RGB 50%", style={"color": cl(0.5, 0.5, 0.5)})
ui.Label("Float Greyscale White", style={"color": cl(1.0)})
ui.Label("Float Greyscale 50%", style={"color": cl(0.5)})
ui.Label("Int Greyscale White", style={"color": cl(255)})
ui.Label("Int Greyscale 50%", style={"color": cl(128)})
ui.Label("Web Color Name", style={"color": cl.yellow})
|
mati-nvidia/developer-office-hours/exts/maticodes.doh_2022_09_02/scripts/add_menu.py | # SPDX-License-Identifier: Apache-2.0
import omni.kit.ui
menu_path = "File/Foo"
menu_path2 = "File/Foo/Bar"
def on_menu_click(menu_path, toggled):
print(menu_path)
print(toggled)
menu = omni.kit.ui.get_editor_menu().add_item(menu_path, on_menu_click)
menu = omni.kit.ui.get_editor_menu().add_item(menu_path2, on_menu_click, True)
omni.kit.ui.get_editor_menu().remove_item(menu)
import omni.kit.menu.utils
from omni.kit.menu.utils import MenuItemDescription
menu_item = MenuItemDescription(
name="Hello World!",
glyph="save.svg",
onclick_fn=lambda: print("Hello World!"),
# hotkey=(
# carb.input.KEYBOARD_MODIFIER_FLAG_CONTROL | carb.input.KEYBOARD_MODIFIER_FLAG_ALT,
# carb.input.KeyboardInput.S,
#),
)
menus = [menu_item]
omni.kit.menu.utils.add_menu_items([menu_item], "File")
omni.kit.menu.utils.remove_menu_items([menu_item], "File", rebuild_menus=True)
# omni.kit.ui.get_editor_menu().convert_to_new_menu
|
mati-nvidia/developer-office-hours/exts/maticodes.doh_2022_09_02/scripts/what_is_cl.py | # SPDX-License-Identifier: Apache-2.0
import omni.ui as ui
from omni.ui import color as cl
# import omni.ui.color as color
my_window = ui.Window("Example Window", width=300, height=300)
with my_window.frame:
with ui.VStack():
ui.Label("Hello World!", style={"color": cl(0.0, 1.0, 0.0)})
|
mati-nvidia/developer-office-hours/exts/maticodes.doh_2022_09_02/config/extension.toml | [package]
# Semantic Versionning is used: https://semver.org/
version = "1.0.0"
# The title and description fields are primarily for displaying extension info in UI
title = "2022-09-02: Dev Office Hours"
description="Sample code from the Dev Office Hour held on 2022-09-02"
# Path (relative to the root) or content of readme markdown file for UI.
readme = "docs/README.md"
# URL of the extension source repository.
repository = ""
# One of categories for UI.
category = "Example"
# Keywords for the extension
keywords = ["kit", "example"]
# Use omni.ui to build simple UI
[dependencies]
"omni.kit.uiapp" = {}
# Main python module this extension provides, it will be publicly available as "import maticodes.doh_2022_09_02".
[[python.module]]
name = "maticodes.doh_2022_09_02"
|
mati-nvidia/developer-office-hours/exts/maticodes.doh_2022_09_02/docs/README.md | # Developer Office Hour - 09/02/2022
This is the sample code from the Developer Office Hour held on 09/02/2022, Mati answered some developer questions from the NVIDIA Omniverse forums regarding Kit, Omniverse Code, Python, and USD.
## Questions
- What's the difference between a shape and a mesh?
- How do I import cl?
- How do I import sc?
- How do I define UI colors?
- How do I add an item to a menu?
|
mati-nvidia/developer-office-hours/exts/maticodes.doh_2022_11_18/maticodes/doh_2022_11_18/extension.py | # SPDX-License-Identifier: Apache-2.0
import carb
import omni.ext
from omni.kit.viewport.utility import get_active_viewport_window
import omni.ui as ui
class MyExtension(omni.ext.IExt):
def on_startup(self, ext_id):
carb.log_info("[maticodes.doh_2022_11_18] Dev Office Hours Extension (2022-11-18) startup")
self.custom_frame = None
viewport_window = get_active_viewport_window()
if viewport_window is not None:
self.custom_frame: ui.Frame = viewport_window.get_frame(ext_id)
with self.custom_frame:
with ui.VStack():
ui.Spacer()
with ui.HStack(height=0):
ui.Spacer()
ui.Button("Hello", width=0, height=0)
def on_shutdown(self):
carb.log_info("[maticodes.doh_2022_11_18] Dev Office Hours Extension (2022-11-18) shutdown")
self.custom_frame.destroy()
self.custom_frame = None
|
mati-nvidia/developer-office-hours/exts/maticodes.doh_2022_11_18/maticodes/doh_2022_11_18/__init__.py | # SPDX-License-Identifier: Apache-2.0
from .extension import *
|
mati-nvidia/developer-office-hours/exts/maticodes.doh_2022_11_18/scripts/placer_model.py | # SPDX-License-Identifier: Apache-2.0
import omni.ui as ui
my_window = ui.Window("Example Window", width=300, height=300)
model = ui.SimpleFloatModel()
sub = None
with my_window.frame:
with ui.VStack():
ui.FloatSlider(model=model)
def body_moved(body, model):
if body.offset_x.value > 100:
body.offset_x.value = 100
elif body.offset_x.value < 0:
body.offset_x.value = 0
model.set_value(body.offset_x.value / 100.0)
body = ui.Placer(draggable=True, drag_axis=ui.Axis.X, offset_x=0)
with body:
rect = ui.Rectangle(width=25, height=25, style={"background_color": ui.color.red})
body.set_offset_x_changed_fn(lambda _, b=body, m=model: body_moved(b, m))
def slider_moved(model, body):
body.offset_x.value = model.as_float * 100
sub = model.subscribe_value_changed_fn(lambda m=model, b=body: slider_moved(m, b))
|
mati-nvidia/developer-office-hours/exts/maticodes.doh_2022_11_18/config/extension.toml | [package]
# Semantic Versionning is used: https://semver.org/
version = "1.0.0"
# The title and description fields are primarily for displaying extension info in UI
title = "2022-11-18: Dev Office Hours"
description="Sample code from the Dev Office Hour held on 2022-11-18"
# Path (relative to the root) or content of readme markdown file for UI.
readme = "docs/README.md"
# URL of the extension source repository.
repository = ""
# One of categories for UI.
category = "Example"
# Keywords for the extension
keywords = ["kit", "example"]
# Use omni.ui to build simple UI
[dependencies]
"omni.kit.uiapp" = {}
# Main python module this extension provides, it will be publicly available as "import maticodes.doh_2022_11_18".
[[python.module]]
name = "maticodes.doh_2022_11_18"
|
mati-nvidia/developer-office-hours/exts/maticodes.doh_2022_11_18/docs/README.md | # Developer Office Hour - 11/18/2022
This is the sample code from the Developer Office Hour held on 11/18/2022, Mati answered some developer questions
from the NVIDIA Omniverse forums regarding Kit, Omniverse Code, Python, and USD.
## Questions
- How do I add widgets on top of the viewport? (ViewportWindow.get_frame)
- How do I use value model with ui.Placer?
- How do I see all of the code from the UI documentation examples?
|
mati-nvidia/developer-office-hours/exts/maticodes.doh_2022_10_07/maticodes/doh_2022_10_07/extension.py | # SPDX-License-Identifier: Apache-2.0
import carb
import omni.ext
import omni.ui as ui
class MyWindow(ui.Window):
def __init__(self, title: str = None, **kwargs):
super().__init__(title, **kwargs)
self.frame.set_build_fn(self._build_window)
def _build_window(self):
with ui.ScrollingFrame():
with ui.VStack(height=0):
ui.Label("My Label")
def clicked():
carb.log_info("Button Clicked!")
ui.Button("Click Me", clicked_fn=clicked)
class MyExtension(omni.ext.IExt):
def on_startup(self, ext_id):
carb.log_info("[maticodes.doh_2022_10_07] Dev Office Hours Extension (2022-10-07) startup")
self._window = MyWindow("MyWindow", width=300, height=300)
def on_shutdown(self):
carb.log_info("[maticodes.doh_2022_10_07] Dev Office Hours Extension (2022-10-07) shutdown")
if self._window:
self._window.destroy()
self._window = None
|
mati-nvidia/developer-office-hours/exts/maticodes.doh_2022_10_07/maticodes/doh_2022_10_07/__init__.py | # SPDX-License-Identifier: Apache-2.0
from .extension import *
|
mati-nvidia/developer-office-hours/exts/maticodes.doh_2022_10_07/scripts/usd_update_stream.py | # SPDX-License-Identifier: Apache-2.0
import omni.usd
from pxr import UsdGeom, Gf
stage = omni.usd.get_context().get_stage()
cube = stage.GetPrimAtPath("/World/Cube")
def print_pos(changed_path):
print(changed_path)
if changed_path.IsPrimPath():
prim_path = changed_path
else:
prim_path = changed_path.GetPrimPath()
prim = stage.GetPrimAtPath(prim_path)
world_transform = omni.usd.get_world_transform_matrix(prim)
translation: Gf.Vec3d = world_transform.ExtractTranslation()
rotation: Gf.Rotation = world_transform.ExtractRotation()
scale: Gf.Vec3d = Gf.Vec3d(*(v.GetLength() for v in world_transform.ExtractRotationMatrix()))
print(translation, rotation, scale)
cube_move_sub = omni.usd.get_watcher().subscribe_to_change_info_path(cube.GetPath(), print_pos) |
mati-nvidia/developer-office-hours/exts/maticodes.doh_2022_10_07/scripts/create_viewport.py | # SPDX-License-Identifier: Apache-2.0
import carb
import omni.kit.viewport.utility as vp_utils
from omni.kit.widget.viewport.api import ViewportAPI
vp_window = vp_utils.create_viewport_window("My Viewport")
vp_window.viewport_api.fill_frame = True
vp_api: ViewportAPI = vp_window.viewport_api
carb.settings.get_settings().set('/rtx/rendermode', "PathTracing")
vp_api.set_hd_engine("rtx")
|
mati-nvidia/developer-office-hours/exts/maticodes.doh_2022_10_07/config/extension.toml | [package]
# Semantic Versionning is used: https://semver.org/
version = "1.0.0"
# The title and description fields are primarily for displaying extension info in UI
title = "2022-10-07: Dev Office Hours"
description="Sample code from the Dev Office Hour held on 2022-10-07"
# Path (relative to the root) or content of readme markdown file for UI.
readme = "docs/README.md"
# URL of the extension source repository.
repository = ""
# One of categories for UI.
category = "Example"
# Keywords for the extension
keywords = ["kit", "example"]
# Use omni.ui to build simple UI
[dependencies]
"omni.kit.uiapp" = {}
# Main python module this extension provides, it will be publicly available as "import maticodes.doh_2022_10_07".
[[python.module]]
name = "maticodes.doh_2022_10_07"
|
mati-nvidia/developer-office-hours/exts/maticodes.doh_2022_10_07/docs/README.md | # Developer Office Hour - 10/07/2022
This is the sample code from the Developer Office Hour held on 10/07/2022, Mati answered some developer questions
from the NVIDIA Omniverse forums regarding Kit, Omniverse Code, Python, and USD.
## Questions
- How do I create another viewport?
- How do I use the Script Node?
|
mati-nvidia/developer-office-hours/exts/maticodes.doh_2022_12_02/maticodes/doh_2022_12_02/extension.py | # SPDX-License-Identifier: Apache-2.0
import carb
import omni.ext
import omni.ui as ui
class MyWindow(ui.Window):
def __init__(self, title: str = None, **kwargs):
super().__init__(title, **kwargs)
self.frame.set_build_fn(self._build_window)
def _build_window(self):
with ui.ScrollingFrame():
with ui.VStack(height=0):
with ui.HStack(height=0):
ui.Label("My Label")
MyCoolComponent()
def clicked():
carb.log_info("Button Clicked!")
ui.Button("Click Me", clicked_fn=clicked)
class MyCoolComponent:
def __init__(self):
with ui.VStack():
ui.Label("Moar labels- asdfasdfasdf")
ui.Label("Even moar labels")
with ui.HStack():
ui.Button("Ok")
ui.Button("Cancel")
class MyExtension(omni.ext.IExt):
def on_startup(self, ext_id):
"""_summary_
Args:
ext_id (_type_): _description_
"""
carb.log_info("[maticodes.doh_2022_12_02] Dev Office Hours Extension (2022-12-02) startup")
self._window = MyWindow("MyWindow", width=300, height=300)
def on_shutdown(self):
carb.log_info("[maticodes.doh_2022_12_02] Dev Office Hours Extension (2022-12-02) shutdown")
if self._window:
self._window.destroy()
self._window = None
|
mati-nvidia/developer-office-hours/exts/maticodes.doh_2022_12_02/maticodes/doh_2022_12_02/__init__.py | # SPDX-License-Identifier: Apache-2.0
from .extension import *
|
mati-nvidia/developer-office-hours/exts/maticodes.doh_2022_12_02/scripts/spawn_objects.py | # SPDX-License-Identifier: Apache-2.0
import carb.events
import omni.kit.app
import omni.kit.commands
import logging
time_since_last_create = 0
update_stream = omni.kit.app.get_app().get_update_event_stream()
def on_update(e: carb.events.IEvent):
global time_since_last_create
carb.log_info(f"Update: {e.payload['dt']}")
time_since_last_create += e.payload['dt']
carb.log_info(f"time since: {time_since_last_create}")
if time_since_last_create > 2:
carb.log_info("Creating cube")
omni.kit.commands.execute('CreateMeshPrimWithDefaultXform',
prim_type='Cube')
time_since_last_create = 0
sub = update_stream.create_subscription_to_pop(on_update, name="My Subscription Name")
sub = None |
mati-nvidia/developer-office-hours/exts/maticodes.doh_2022_12_02/config/extension.toml | [package]
# Semantic Versionning is used: https://semver.org/
version = "1.0.0"
# The title and description fields are primarily for displaying extension info in UI
title = "2022-12-02: Dev Office Hours"
description="Sample code from the Dev Office Hour held on 2022-12-02"
# Path (relative to the root) or content of readme markdown file for UI.
readme = "docs/README.md"
# URL of the extension source repository.
repository = ""
# One of categories for UI.
category = "Example"
# Keywords for the extension
keywords = ["kit", "example"]
# Use omni.ui to build simple UI
[dependencies]
"omni.kit.uiapp" = {}
# Main python module this extension provides, it will be publicly available as "import maticodes.doh_2022_12_02".
[[python.module]]
name = "maticodes.doh_2022_12_02"
|
mati-nvidia/developer-office-hours/exts/maticodes.doh_2022_12_02/docs/README.md | # Developer Office Hour - 12/02/2022
This is the sample code from the Developer Office Hour held on 12/02/2022, Mati answered some developer questions
from the NVIDIA Omniverse forums regarding Kit, Omniverse Code, Python, and USD.
## Questions
- How do I uninstall an extension?
- How do I export USDZ?
- Where is the extension I was working on?
- How do I create complex UI without so much indented Python code?
|
mati-nvidia/developer-office-hours/exts/maticodes.doh_2022_08_12/maticodes/doh_2022_08_12/extension.py | # SPDX-License-Identifier: Apache-2.0
import carb
import omni.ext
from omni.kit.viewport.utility import get_active_viewport_window
import omni.ui as ui
from .viewport_scene import ViewportScene
from .object_info_model import ObjectInfoModel
class MyWindow(ui.Window):
def __init__(self, title: str = None, delegate=None, **kwargs):
super().__init__(title, **kwargs)
self._viewport_scene = None
self.obj_info_model = kwargs["obj_info_model"]
self.frame.set_build_fn(self._build_window)
def _build_window(self):
with ui.ScrollingFrame():
with ui.VStack(height=0):
ui.Label("My Label 2")
ui.StringField()
ui.StringField(password_mode=True)
def clicked():
self.obj_info_model.populate()
ui.Button("Reload Object Info", clicked_fn=clicked)
def destroy(self) -> None:
return super().destroy()
class MyExtension(omni.ext.IExt):
# ext_id is current extension id. It can be used with extension manager to query additional information, like where
# this extension is located on filesystem.
def on_startup(self, ext_id):
# Get the active Viewport (which at startup is the default Viewport)
viewport_window = get_active_viewport_window()
# Issue an error if there is no Viewport
if not viewport_window:
carb.log_error(f"No Viewport Window to add {ext_id} scene to")
return
# Build out the scene
model = ObjectInfoModel()
self._viewport_scene = ViewportScene(viewport_window, ext_id, model)
self._window = MyWindow("MyWindow", obj_info_model=model, width=300, height=300)
def on_shutdown(self):
if self._window:
self._window.destroy()
self._window = None
if self._viewport_scene:
self._viewport_scene.destroy()
self._viewport_scene = None
|
mati-nvidia/developer-office-hours/exts/maticodes.doh_2022_08_12/maticodes/doh_2022_08_12/viewport_scene.py | # SPDX-License-Identifier: Apache-2.0
# Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
#
# NVIDIA CORPORATION and its licensors retain all intellectual property
# and proprietary rights in and to this software, related documentation
# and any modifications thereto. Any use, reproduction, disclosure or
# distribution of this software and related documentation without an express
# license agreement from NVIDIA CORPORATION is strictly prohibited.
#
__all__ = ["ViewportScene"]
from omni.ui import scene as sc
import omni.ui as ui
from .object_info_manipulator import ObjectInfoManipulator
class ViewportScene():
"""The Object Info Manipulator, placed into a Viewport"""
def __init__(self, viewport_window: ui.Window, ext_id: str, model) -> None:
self._scene_view = None
self._viewport_window = viewport_window
# Create a unique frame for our SceneView
with self._viewport_window.get_frame(ext_id):
# Create a default SceneView (it has a default camera-model)
self._scene_view = sc.SceneView()
# Add the manipulator into the SceneView's scene
with self._scene_view.scene:
ObjectInfoManipulator(model=model)
# Register the SceneView with the Viewport to get projection and view updates
self._viewport_window.viewport_api.add_scene_view(self._scene_view)
def __del__(self):
self.destroy()
def destroy(self):
if self._scene_view:
# Empty the SceneView of any elements it may have
self._scene_view.scene.clear()
# Be a good citizen, and un-register the SceneView from Viewport updates
if self._viewport_window:
self._viewport_window.viewport_api.remove_scene_view(self._scene_view)
# Remove our references to these objects
self._viewport_window = None
self._scene_view = None
|
mati-nvidia/developer-office-hours/exts/maticodes.doh_2022_08_12/maticodes/doh_2022_08_12/__init__.py | # SPDX-License-Identifier: Apache-2.0
from .extension import *
|
mati-nvidia/developer-office-hours/exts/maticodes.doh_2022_08_12/maticodes/doh_2022_08_12/object_info_model.py | # SPDX-License-Identifier: Apache-2.0
# Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
#
# NVIDIA CORPORATION and its licensors retain all intellectual property
# and proprietary rights in and to this software, related documentation
# and any modifications thereto. Any use, reproduction, disclosure or
# distribution of this software and related documentation without an express
# license agreement from NVIDIA CORPORATION is strictly prohibited.
#
__all__ = ["ObjectInfoModel"]
from pxr import Tf
from pxr import Usd
from pxr import UsdGeom
from omni.ui import scene as sc
import omni.usd
# The distance to raise above the top of the object's bounding box
TOP_OFFSET = 5
class ObjectInfoModel(sc.AbstractManipulatorModel):
"""
The model tracks the position and info of the selected object.
"""
class PositionItem(sc.AbstractManipulatorItem):
"""
The Model Item represents the position. It doesn't contain anything
because we take the position directly from USD when requesting.
"""
def __init__(self):
super().__init__()
self.value = [0, 0, 0]
def __init__(self):
super().__init__()
# Current selected prim and material
self._current_paths = []
self.positions = []
self._stage_listener = None
self.populate()
if not self._stage_listener:
# This handles camera movement
usd_context = self._get_context()
stage = usd_context.get_stage()
self._stage_listener = Tf.Notice.Register(Usd.Notice.ObjectsChanged, self._notice_changed, stage)
def populate(self):
self._current_paths = []
self.positions = []
usd_context = self._get_context()
stage = usd_context.get_stage()
prim = stage.GetPrimAtPath("/World/Labeled")
if not prim.IsValid():
return
for child in prim.GetChildren():
if child.IsA(UsdGeom.Imageable):
self._current_paths.append(child.GetPath())
self.positions.append(ObjectInfoModel.PositionItem())
# Position is changed because new selected object has a different position
self._item_changed(self.positions[-1])
def _get_context(self):
# Get the UsdContext we are attached to
return omni.usd.get_context()
def _notice_changed(self, notice: Usd.Notice, stage: Usd.Stage) -> None:
"""Called by Tf.Notice. Used when the current selected object changes in some way."""
for p in notice.GetChangedInfoOnlyPaths():
for i, watched_path in enumerate(self._current_paths):
if str(watched_path) in str(p.GetPrimPath()):
self._item_changed(self.positions[i])
def get_name(self, index):
return self._current_paths[index]
def get_num_prims(self):
return len(self._current_paths)
def get_position(self, index):
"""Returns position of currently selected object"""
stage = self._get_context().get_stage()
if not stage or not self._current_paths[index]:
return [0, 0, 0]
# Get position directly from USD
prim = stage.GetPrimAtPath(self._current_paths[index])
box_cache = UsdGeom.BBoxCache(Usd.TimeCode.Default(), includedPurposes=[UsdGeom.Tokens.default_])
bound = box_cache.ComputeWorldBound(prim)
range = bound.ComputeAlignedBox()
bboxMin = range.GetMin()
bboxMax = range.GetMax()
# Find the top center of the bounding box and add a small offset upward.
position = [(bboxMin[0] + bboxMax[0]) * 0.5, bboxMax[1] + TOP_OFFSET, (bboxMin[2] + bboxMax[2]) * 0.5]
return position
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mati-nvidia/developer-office-hours/exts/maticodes.doh_2022_08_12/maticodes/doh_2022_08_12/object_info_manipulator.py | # SPDX-License-Identifier: Apache-2.0
# Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
#
# NVIDIA CORPORATION and its licensors retain all intellectual property
# and proprietary rights in and to this software, related documentation
# and any modifications thereto. Any use, reproduction, disclosure or
# distribution of this software and related documentation without an express
# license agreement from NVIDIA CORPORATION is strictly prohibited.
__all__ = ["ObjectInfoManipulator"]
from omni.ui import color as cl
from omni.ui import scene as sc
import omni.ui as ui
LEADER_LINE_CIRCLE_RADIUS = 2
LEADER_LINE_THICKNESS = 2
LEADER_LINE_SEGMENT_LENGTH = 20
VERTICAL_MULT = 1.5
HORIZ_TEXT_OFFSET = 5
LINE1_OFFSET = 3
LINE2_OFFSET = 0
class ObjectInfoManipulator(sc.Manipulator):
"""Manipulator that displays the object path and material assignment
with a leader line to the top of the object's bounding box.
"""
def on_build(self):
"""Called when the model is changed and rebuilds the whole manipulator"""
if not self.model:
return
for i in range(self.model.get_num_prims()):
position = self.model.get_position(i)
# Move everything to where the object is
with sc.Transform(transform=sc.Matrix44.get_translation_matrix(*position)):
# Rotate everything to face the camera
with sc.Transform(look_at=sc.Transform.LookAt.CAMERA):
# Leader lines with a small circle on the end
sc.Arc(LEADER_LINE_CIRCLE_RADIUS, axis=2, color=cl.yellow)
sc.Line([0, 0, 0], [0, LEADER_LINE_SEGMENT_LENGTH, 0],
color=cl.yellow, thickness=LEADER_LINE_THICKNESS)
sc.Line([0, LEADER_LINE_SEGMENT_LENGTH, 0],
[LEADER_LINE_SEGMENT_LENGTH, LEADER_LINE_SEGMENT_LENGTH * VERTICAL_MULT, 0],
color=cl.yellow, thickness=LEADER_LINE_THICKNESS)
# Shift text to the end of the leader line with some offset
with sc.Transform(transform=sc.Matrix44.get_translation_matrix(
LEADER_LINE_SEGMENT_LENGTH + HORIZ_TEXT_OFFSET,
LEADER_LINE_SEGMENT_LENGTH * VERTICAL_MULT,
0)):
with sc.Transform(scale_to=sc.Space.SCREEN):
# Offset each Label vertically in screen space
with sc.Transform(transform=sc.Matrix44.get_translation_matrix(0, LINE1_OFFSET, 0)):
sc.Label(f"Path: {self.model.get_name(i)}",
alignment=ui.Alignment.LEFT_BOTTOM)
def on_model_updated(self, item):
# Regenerate the manipulator
self.invalidate()
|
mati-nvidia/developer-office-hours/exts/maticodes.doh_2022_08_12/scripts/viewport_popup_notification.py | # SPDX-License-Identifier: Apache-2.0
# https://docs.omniverse.nvidia.com/py/kit/source/extensions/omni.kit.notification_manager/docs/index.html?highlight=omni%20kit%20notification_manager#
import carb
def clicked_ok():
carb.log_info("User clicked ok")
def clicked_cancel():
carb.log_info("User clicked cancel")
import omni.kit.notification_manager as nm
ok_button = nm.NotificationButtonInfo("OK", on_complete=clicked_ok)
cancel_button = nm.NotificationButtonInfo("CANCEL", on_complete=clicked_cancel)
notification_info = nm.post_notification(
"Notification Example",
hide_after_timeout=False,
duration=0,
status=nm.NotificationStatus.WARNING,
button_infos=[ok_button, cancel_button],
)
|
mati-nvidia/developer-office-hours/exts/maticodes.doh_2022_08_12/scripts/create_many_prims.py | # SPDX-License-Identifier: Apache-2.0
from pxr import UsdGeom
import omni.kit.commands
import omni.usd
stage = omni.usd.get_context().get_stage()
cube_paths = []
for i in range(10):
cube_path = omni.usd.get_stage_next_free_path(stage, "/World/Cube", prepend_default_prim=False)
cube_paths.append(cube_path)
omni.kit.commands.execute("CreatePrim", prim_type="Cube", prim_path=cube_path)
# UsdGeom.Cube.Define(stage, cube_path)
|
mati-nvidia/developer-office-hours/exts/maticodes.doh_2022_08_12/scripts/refer_to_child_prim.py | # SPDX-License-Identifier: Apache-2.0
# https://docs.omniverse.nvidia.com/prod_usd/prod_usd/quick-start/hierarchy.html
import omni.usd
stage = omni.usd.get_context().get_stage()
starting_prim = stage.GetPrimAtPath("/World/New")
for shape in starting_prim.GetChildren():
print(shape)
for shape_child in shape.GetChildren():
print(shape_child)
for prim in stage.Traverse():
print(prim)
|
mati-nvidia/developer-office-hours/exts/maticodes.doh_2022_08_12/scripts/create_group_anywhere.py | # SPDX-License-Identifier: Apache-2.0
from pxr import Sdf
import omni.kit.commands
import omni.usd
stage = omni.usd.get_context().get_stage()
children = []
for i in range(3):
child = omni.usd.get_stage_next_free_path(stage, "/World/Cube", prepend_default_prim=False)
children.append(child)
omni.kit.commands.execute("CreatePrim", prim_type="Cube", prim_path=child)
group_path = Sdf.Path("/World/New/Hello")
omni.kit.commands.execute("CreatePrimWithDefaultXformCommand", prim_type="Scope", prim_path=str(group_path))
for child in children:
prim = stage.GetPrimAtPath(child)
name = prim.GetName()
omni.kit.commands.execute("MovePrim", path_from=child, path_to=group_path.AppendPath(name))
|
mati-nvidia/developer-office-hours/exts/maticodes.doh_2022_08_12/scripts/does_prim_exist.py | # SPDX-License-Identifier: Apache-2.0
from pxr import Usd, UsdGeom
import omni.usd
stage = omni.usd.get_context().get_stage()
prim = stage.GetPrimAtPath("/World/New/Hello")
print(prim)
print(prim.IsValid())
prim = stage.GetPrimAtPath("/World/New/Fake")
print(prim)
print(prim.IsValid())
|
mati-nvidia/developer-office-hours/exts/maticodes.doh_2022_08_12/config/extension.toml | [package]
# Semantic Versionning is used: https://semver.org/
version = "1.0.0"
# The title and description fields are primarily for displaying extension info in UI
title = "2022-08-12: Dev Office Hours"
description="Sample code from the Dev Office Hour held on 2022-08-12"
# Path (relative to the root) or content of readme markdown file for UI.
readme = "docs/README.md"
# URL of the extension source repository.
repository = ""
# One of categories for UI.
category = "Example"
# Keywords for the extension
keywords = ["kit", "example"]
# Use omni.ui to build simple UI
[dependencies]
"omni.kit.uiapp" = {}
# Main python module this extension provides, it will be publicly available as "import maticodes.doh_2022_08_12".
[[python.module]]
name = "maticodes.doh_2022_08_12"
|
mati-nvidia/developer-office-hours/exts/maticodes.doh_2022_08_12/docs/README.md | # Developer Office Hour - 08/12/2022
This is the sample code from the Developer Office Hour held on 08/12/2022, Mati answered some developer questions
from the NVIDIA Omniverse forums regarding Kit, Omniverse Code, Python, and USD.
## Questions
- How do I create many prims at available prim paths?
- How do I create a group at a specific prim path?
- Is there a way to check if a prim exists?
- How do I refer to the child of a prim without giving the prim path?
- How can I create a notification popup in the viewport with a log message?
- How do I show labels in the viewport for multiple prims?
...
|