effect.py - annna - Annna the nice friendly bot.
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       effect.py (1456B)
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            1 # https://docs.blender.org/api/current/index.html
            2 #
            3 # This is to be be called from blender itself (--python), and does not
            4 # need 'bpy' to be installed from pip. It will be executed after blender
            5 # is initialised and before the rendering begins.
            6 #
            7 # The camera can be changed in the blender file before hand, with a nice
            8 # default. The default camera will be used. The object original author
            9 # did probably do it already.
           10 
           11 import bpy
           12 import os
           13 
           14 def effect(fn):
           15     """
           16     add the function to a list of effects for calling an
           17     effect from ${EFFECT} environment variable
           18     """
           19     effect_list[fn.__name__] = fn
           20     def inner(kwargs):
           21         print(f"running effect {fn.name}({value})")
           22         return fn
           23     return inner
           24 
           25 effect_list = {}
           26 obj = bpy.context.active_object
           27 vars = {}
           28 
           29 @effect
           30 def translate(x=0, y=0, z=0):
           31     """
           32     move an object on x, y, z axis
           33     """
           34     bpy.ops.transform.translate(value=(x, y, z))
           35 
           36 @effect
           37 def reshape(value=0):
           38     """
           39     Shape keys permits to adjust proportions of an object,
           40     the active shape key is going to be adjusted.
           41     """
           42     if obj.active_shape_key.value == None:
           43         raise Exception("there must be a shape key added in the blend file first, you can use the GUI")
           44     obj.active_shape_key.value = value
           45 
           46 # out of environment variables, call $EFFECT($var_...)
           47 for k, v in os.environ.items():
           48     if k.startswith("var_"):
           49         vars[k[4:]] = float(v)
           50 effect_list[os.environ["EFFECT"]](**vars)