1
$\begingroup$

I would like to set active shape key using Python. I know that I can use following code for this purpose:

bpy.context.active_object.active_shape_key_index = some_index

but, when I have several shape keys, then I don't know how to get this index from given shape key:

sh_key = bpy.context.active_object.data.shape_keys.key_blocks["shape_key_name"]

There is no attribute called index in object sh_key. I tried to use bpy.context.active_object.active_shape_key, but this attribute is read only. Thanks for your help.

Improve this question
$\endgroup$

2 Answers 2

Reset to default
2
$\begingroup$

Hi here is some quick code from the python console,

I have an active object with a number of shapekeys, "Key 1" being one, I find the index using find(...) then set the active_shape_key_index to this number.

find(...) will return -1 if a key of that name is not found.

>>> index = C.object.data.shape_keys.key_blocks.find('Key 1') >>> index 1 >>> C.object.active_shape_key_index = index >>>
Improve this answer
$\endgroup$
1
  • 1
    $\begingroup$ At about the same time too. Suggest using key_blocks.get("shape_key_name") and testing against None, can save hassles down the line for all collections in blender. $\endgroup$ Commented Sep 21, 2016 at 13:43
1
$\begingroup$

I thing, I found solution, but it is a little bit complicated (API of vertex groups is more straightforward). You can set active shape key, when you know its name, using following code:

obj = bpy.context.active_object shape_key = obj.data.shape_keys.key_blocks["shape_key_name"] keys = obj.data.shape_keys.key_blocks.keys() shape_key_index = keys.index(shape_key.name) obj.active_shape_key_index = shape_key_index
Improve this answer
$\endgroup$

You must log in to answer this question.

Start asking to get answers

Find the answer to your question by asking.

Ask question

Explore related questions

See similar questions with these tags.