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Practical Maya Programming with Python

You're reading from   Practical Maya Programming with Python Unleash the power of Python in Maya and unlock your creativity

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Product type Paperback
Published in Jul 2014
Publisher
ISBN-13 9781849694728
Length 352 pages
Edition 1st Edition
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Author (1):
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Robert Galanakis Robert Galanakis
Author Profile Icon Robert Galanakis
Robert Galanakis
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Toc

Table of Contents (12) Chapters Close

Preface 1. Introspecting Maya, Python, and PyMEL FREE CHAPTER 2. Writing Composable Code 3. Dealing with Errors 4. Leveraging Context Managers and Decorators in Maya 5. Building Graphical User Interfaces for Maya 6. Automating Maya from the Outside 7. Taming the Maya API 8. Unleashing the Maya API through Python 9. Becoming a Part of the Python Community A. Python Best Practices Index

Extending the node factory


The following sections cover extending the node factory's functionality. We will add support for string, color, and enum attributes, transform nodes, and overriding MPxNode methods other than compute.

There are many more features to support than what's covered here, such as string and array attributes. When it comes time to add a new feature to the node factory, I suggest you start by getting comfortable with its implementation using the Maya Python API directly. Only then should you support it in the node factory. This is due, first and foremost, to the fact that many examples and tutorials exist for the API. Second, it is due to the fact that diagnosing issues in the node factory can be difficult due to its dynamism.

Supporting string and color attributes

Adding support for string and color attributes demonstrates the power of the attribute specification design. For string attributes, add the following code to nodefactory.py:

class _StringAttr(AttrSpec):	
    def...
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