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- # This script defines functions to be used directly in drivers expressions to
- # extend the builtin set of python functions.
- #
- # This can be executed on manually or set to 'Register' to
- # initialize thefunctions on file load.
- # two sample functions
- def invert(f):
- """ Simple function call:
- invert(val)
- """
- return 1.0 - f
- uuid_store = {}
- def slow_value(value, fac, uuid):
- """ Delay the value by a factor, use a unique string to allow
- use in multiple drivers without conflict:
- slow_value(val, 0.5, "my_value")
- """
- value_prev = uuid_store.get(uuid, value)
- uuid_store[uuid] = value_new = (value_prev * fac) + (value * (1.0 - fac))
- return value_new
- import bpy
- # Add variable defined in this script into the drivers namespace.
- bpy.app.driver_namespace["invert"] = invert
- bpy.app.driver_namespace["slow_value"] = slow_value
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