May 26, 2011 - Python at Walt Disney Animation Studios
WDA = Walt Disney Animation Studios
How many ways does WDA use Python?
- Scripting in Maya.
- DLight (lighting controls)
- Scene Navigation (navigation through scenes in a script once audio/video added)
- Art version control systems.
- Scripts to facilitate moving images and data in and out of sequences
- syrup - SAP scraper. Python Interface to our SAP based timecard system.
- Python CGI that interfaces with Production management tools and generates Excel.
- munki - A client/server to distribute 3rd party packages to max
- Coda - queuing system. C++ application with Python expressions and API
- Squish - 3rd party QT GUI test automation. Lots of Python scripts there.
- Mentor - Unittest library that interfaces well with Maya.
- GEMS - Python CGI system for searching Disney Archives
- Most 3rd party tools for the visual effect community comes with a Python API. How cool is that?
- Another 20 things I couldn’t keep up with!
Specifics on how WDA use Python?
Sample apps out of many:
- C++ 52%, Python 48%
- Render Picture
- Python 100%
- Shot management
- Element properties
all tools are fully scriptable in Python
- Defines messages independent of Language
- Generates C++ header files with Python bindings
- Approx 2,000 regression tests between products
- Tests cover both C++ and Python functions
- 99% written using unittest
- A hot topic!
- PyQt vs Qt
- Smart use of classes far mor important than Language interface
- Time-critical functions written (or rewritten) in C++
All provide a Python API!!!
- Maya (autodesk)
- Houdini (Side effects)
- Renderman (Pixar)
- Performance trade-off
- Development cost
- Support cost
- Pipeline integration