usdQt

Reusable UI widgets for viewing and authoring USD files

The components in usdview are good reference, but they’re purpose built for the usdview application and are implemented in a way that makes them difficult to extract. We need widgets that provide similar functionality that we can use ad-hoc throughout our pipeline.

Project Goals

• make it easy to build standalione usdview-like applications, or integrate with client plugins (maya, katana, etc)
• long term, build a complete replacement of usdview

Design Requirements

• separate models and views
• standardize signals/slots between widgets
• support PyQt4/PyQt5/PySide/PySide2

This is a first look to get feedback. This repo may go away!

Components

Current

• prim outliner: view prim hierarchy
  • similar to the outliner in usdview, but built on an MVC design
  • also includes editing capabilities:
    • switch variants
    • add references
    • add Xforms
• sublayer view: view sub-layers and choose the current target
• layer editor: view usd ascii for current layer

Planned

• variant set editor: display and create variants and variant sets
• stage signaler: convert stage notifications into Qt signals
• prim property editor: view and edit properties/attributes of a prim
• hydra viewport: display changes to the stage in realtime

Installing

First, install the dependencies:

pip install -r requirements.txt --user

Note that this assumes you have pyside/2 or pyqt4/5 installed. If you don't, then run the following (and cross your fingers), or use homebrew:

pip install PySide --user

You'll also obviously need to make sure that you've built USD and placed the pxr python package on the PYTHONPATH.

Testing

To test it out:

python usdqt/app.py /path/to/file.usd