[Bf-committers] Constraints API

[malefico andauer]

As I said, sorry for my ignorance :)

and thanks a lot !

malefico
 --- Ken Hughes <khughes at pacific.edu> escribió:

> malefico andauer wrote:
> > Hi Ken,
> > 
> > We are playing with Constraint module, but the
> fact
> > that is an attribute of poses instead of bones,
> > confuses us a little...
> > 
> > We tried the example script in the docs and got
> error.
> > 
> > Sorry my ignorance, but shouldn't this be more
> logical
> > if we just iterate around the bones in an armature
> and
> > get the constraints each bone has ? Don't really
> get
> > what the poses mean and why this is the way to
> access
> > to constraints...
> 
> The design is based on explanations from Joseph
> Gilbert and Ton, and 
> from Ton's description here:
> 
>
http://www.blender.org/cms/How_Armatures_work.634.0.html
> 
> Short version: the armature defines the bones, but
> the pose (which 
> belongs to an object) describes the position of the
> bones.
> 
> > Can you check the example you posted in the docs
> and
> > explain it or provide some other example ?
> > 
> > The code in the docs is:
> > 
> > ---------
> > from Blender import *
> > 
> > ob = Object.Get('Armature')
> > for bonename in pose.bones.keys():
> >   bone = pose.bones[bonename]
> >   for const in bone.constraints:
> >     print bone.name,'=>'const.type
> > ----------
> > 
> > We changed it to:
> > 
> > ------------
> > from Blender import *
> > 
> > pose = Armature.Get('Armature')
> > for bonename in pose.bones.keys():
> >   bone = pose.bones[bonename]
> >   for const in bone.constraints:
> >     print bone.name,'=>',const.type
> > -------
> > 
> > ...to get rid of some error messages, but we're
> stuck
> > on "
> > 
> > Traceback (most recent call last):
> >   File "test_constraint.py", line 6, in ?
> >     for const in bone.constraints:
> > AttributeError: 'Bone' object has no attribute
> > 'constraints'
> 
> 
> Sorry: the example should be:
> 
>    from Blender import *
> 
>    ob = Object.Get('Armature')
>    pose = ob.getPose()
>    for bonename in pose.bones.keys():
>      bone = pose.bones[bonename]
>      for const in bone.constraints:
>        print bone.name,'=>',const
> 
> I've updated CVS with the correction.
> 
> Ken
> 
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