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