Working with string options

I’ve written an example script for working with string options in Maya.  The four main functions are:

  • stringOptionExists(name)
  • setStringOption(name, value)
  • getStringOption(name)
  • removeStringOption(name)

The usage is pretty simple.  stringOptionExists checks if a string option already exists (returning True or False), setStringOption will set a string option value, getStringOption will return a string option value, and removeStringOption will delete the string option.  setStringOption and getStringOption will match string option data types with python data types.

“string” -> Python’s str type

  • text, e.g. “hello world”

“boolean” -> Python’s bool type

  • True or False

“integer” -> Python’s int type

  • any whole number, e.g. -5, 0, 1, 100, etc…

“scalar”‘ -> Python’s float type

  • any decimal number, e.g. -5.4, 0.0, 1.0, 104.23, etc…

“color” -> Python’s tuple type of length 4 (although you can set it using a list of length 4)

  • four scalars corresponding to RGBA, e.g. (1.0, 1.0, 1.0, 1.0)

“vector” -> Python’s tuple type of length 3 (although you can set it using a list of length 3)

  • three scalars corresponding to XYZ, e.g. (1.0, 1.0, 1.0)

undeclared -> Python’s None type

Here is an example usage of working with the script.  First I check if the “unified sampling” string option exists, printing out it’s value if it does.  Next I set all of the standard unified sampling string options, creating them if they do not already exist.  Then I print the string option values that I just created right before I remove those string options:

from string_options import stringOptionExists, setStringOption, getStringOption, removeStringOption

# Check to see if the unified sampling string option exists.
if stringOptionExists("unified sampling"):
    value = getStringOption("unified sampling")
    print "The unified sampling string option already exists. It's value is", value
    print "The unified sampling string option does not exist. We will create it when we set it."

# Set unified sampling string options.
setStringOption("unified sampling", True)
setStringOption("samples quality", (0.5, 0.5, 0.5, 0.5))
setStringOption("samples min", 1.0)
setStringOption("samples max", 100.0)
setStringOption("samples error cutoff", (0.0, 0.0, 0.0, 0.0))

# Print unified sampling values
print getStringOption("unified sampling")
print getStringOption("samples quality")
print getStringOption("samples min")
print getStringOption("samples max")
print getStringOption("samples error cutoff")

# Remove unified sampling string options
removeStringOption("unified sampling")
removeStringOption("samples quality")
removeStringOption("samples min")
removeStringOption("samples max")
removeStringOption("samples error cutoff")

You can download the script here:


About bnrayner

I am a VFX developer specializing in 3d rendering. With a background in Physics and Digital Art, I enjoying using math to explain how light interacts with materials and to creating pretty pictures along the way.

Posted on July 14, 2012, in Developer, maya, scripts. Bookmark the permalink. 1 Comment.

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