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Notes:
* This is own coocking, since it seems hard to find papers on simplifying already existing bezier curves,
and we do not really need the 'generic' least-square fitting of bezier in a set of points, here.
* It takes advantage of specificities of FCurves (e.g. only difference that matters here is Y value at same X frame,
no vertical overlapping, etc.).
* It gives reasonably good results, but could most likely be enhanced quite a bit still.
* Only 'hooked' to bake action operator right now (needs more work to add it to graph editor too).
* Ultimately should probably be redone in C. Would keep it in Python until we have a real good
cleanup behavior though, much easier to experiment in later language.
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Disabling did nothing
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Caused by own rBfb7ff31315a1c9 - not surprising code using Object.matrix_local
in other contexts than mere Object parenting fails, since it was using a broken
implementation before...
Note that whole NLA_OT_Bake op would need some love, it is quite brittle in many aspects.
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there are cases where you want to use visual-keying but not remove constraints, also it wasnt obvious that clearing constraints used a different method of keyframing.
So split these into 2 options.
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in fact this is more feature request.
add an option to bake a parented objects animation, then clear the parent and apply the action.
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The problems here were caused by a cleanup commit (r. 53369).
BTW, the code here is pretty convoluted mess.
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bake_action tries to make kind of a 'visual keying'... On one side, this is rather stupid when you keep constraints (in this case, keying actual loc/rot/scale transforms, i.e. matrix_basis, is enough, doing more would lead to unexpected behavior with some constraints). On the other one, making a good visual keying of bones is *really* tricky, so now using the new object's convert_space() func to compute that (when the user chooses to remove the constraints).
Incidentally, this greatly simplifies the code of bake_action!
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object bakes.
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and add makefile target `check_spelling`
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bpy_extras.anim_utils and bake operator into bl_operators/anim.py
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