[Bf-python] Ask for: link/append/import returns object(s) instance(s)

[Pierrick Koch]

Thanks,

Actually, I'm already using bpy.data.libraries.load(filepath) to generate a
dictionary of my object (thanks to Blender 2.57) [1],
and then, I use the dictionary in Blender 2.56 (since some code I'm using is
Python3.1 no 3.2, but this is going to be fixed)

The probleme with bpy.data.libraries.load(filepath) when used like:
####
filepath = '/usr/local/share/data/morse/components/robots/atrv.blend'
with bpy.data.libraries.load(filepath) as (src, dest):
  for obj in src.objects:
    tmp = obj
    suffix = 1 # we need to do that in case there is already an object with
the same name
    while tmp in bpy.data.objects.keys():
      tmp='%s%03d' % (obj, suffix)
      suffix = suffix + 1
    dest.objects[tmp] = src.objects[obj]

for obj in dest.objects:
  bpy.context.scene.objects.link(bpy.data.objects[obj])

####

...is that we loose the parent relationship, so I had to do something like:
`bpy.ops.object.constraints_clear()`
which I'm not sure is the right method to get back that relation, but it
works.

[1]
https://github.com/pierriko/morse/blob/master/src/morse/builder/generator.py#L41



Cheers!


On Tue, May 24, 2011 at 9:05 PM, Campbell Barton <ideasman42 at gmail.com>wrote:

> Take a look at:
> bpy.data.libraries.load(...)
>
> Examples in docs:
>
> http://www.blender.org/documentation/blender_python_api_2_57_release/bpy.types.BlendDataLibraries.html#bpy.types.BlendDataLibraries.load
>
> This is intended to be used from python rather then the operator since
> it gives a way to inspect whats in the blend and select the data
> blocks to add.
>
> Now you come to mention it, it doesn't give you a list of loaded
> datablocks which would be useful.
>
> On Tue, May 24, 2011 at 11:27 AM, Martin Poirier <theeth at yahoo.com> wrote:
> >
> > The link and append operators set the selection to the objects that were
> added. (the active object isn't changed though, careful with that.)
> >
> > A complete solution (a low level api call) should return all the added
> datablocks (dependencies and all, not just top level objects) so you can
> detect all new items.
> >
> > Martin
> >
> > --- On Tue, 5/24/11, Pierrick Koch <pierrick.koch at gmail.com> wrote:
> >
> > From: Pierrick Koch <pierrick.koch at gmail.com>
> > Subject: [Bf-python] Ask for: link/append/import returns object(s)
> instance(s)
> > To: robotics at blender.org, bf-python at blender.org
> > Received: Tuesday, May 24, 2011, 12:52 AM
> >
> > Hi everyone,
> > I am looking for a Python method to link/append/import objects in Blender
> that would give me back some info about what has been appended (in the best
> case a list of the imported objects instances)...
> > For instance: let say that in a .blend file I have a car made of the main
> structure which contain 4 wheels.
> > Code:
> > bpy.ops.wm.link_append(directory="/home/pierrick/atrv.blend/Object",
> link=False,
> >   files=[{'name': 'ATRV'}, {'name': 'Wheel.4'}, {'name': 'Wheel.3'},
> {'name': 'Wheel.2'}, {'name': 'Wheel.1'}])
> > if there was already an object called ATRV, my car will be renamed
> ATRV.001,
> > it would be nice to get an instance of the objects, to avoid pasing by
> bpy.data.object
> > Same with collada: it would be amazing if:
> > Code:
> > bpy.ops.wm.collada_import(filepath="/home/pierrick/atrv.dae")
> > could return something like:
> > Code:
> > you_just_imported = {
> >   'ATRV': [
> >     'Wheel1',
> >     'Wheel2',
> >     'Wheel3',
> >     'Wheel4'
> >   ]
> > }
> >
> > Where the string are the real-name of the object in the Blender instance.
> > With .001 if there was already another object with the same name in the
> scene.
> > ...
> > In fact, I'm working on Robotics
> http://wiki.blender.org/index.php/Robotics:Contents
> >
> https://github.com/pierriko/morse/blob/master/src/morse/builder/morsebuilder.py#L61
> >
> https://github.com/pierriko/morse/blob/master/examples/morse/scenarii/ros_example.py
> > http://www.openrobots.org/wiki/morse
> > ...
> > Any idea? shall I open an issue for that?
> > Cheers,
> > Pierrick
> > = This message is cross-posted on
> http://www.blender.org/forum/viewtopic.php?t=20112 =
> > -----Inline Attachment Follows-----
> >
> > _______________________________________________
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> >
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> >
>
>
>
> --
> - Campbell
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-- 
Pierrick Koch
Ingénieur GREYC <https://www.greyc.fr>/CNRS <http://www.cnrs.fr>, Hanoi
+841675357334 [UTC+7]
*linkedin.com/in/pierriko* <http://linkedin.com/in/pierriko>
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