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

[Campbell Barton]

eek, mixing blender versions like this sounds, painful!

Committed feature so the datablocks are accessible within the list now.
r36869.

--- from the docs.
# the loaded objects can be accessed from 'data_to' outside of the context
# since loading the data replaces the strings for the datablocks or None
# if the datablock could not be loaded.
with bpy.data.libraries.load(filepath) as (data_from, data_to):
    data_to.meshes = data_from.meshes
# now operate directly on the loaded data
for mesh in data_to.meshes:
    if mesh is not None:
        print(mesh.name)


On Tue, May 24, 2011 at 2:51 PM, Pierrick Koch <pierrick.koch at gmail.com> wrote:
> 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-----
>> >
>> > _______________________________________________
>> > Bf-python mailing list
>> > Bf-python at blender.org
>> > http://lists.blender.org/mailman/listinfo/bf-python
>> >
>> > _______________________________________________
>> > Bf-python mailing list
>> > Bf-python at blender.org
>> > http://lists.blender.org/mailman/listinfo/bf-python
>> >
>>
>>
>>
>> --
>> - Campbell
>> _______________________________________________
>> Bf-python mailing list
>> Bf-python at blender.org
>> http://lists.blender.org/mailman/listinfo/bf-python
>
>
>
> --
> Pierrick Koch
> Ingénieur GREYC/CNRS, Hanoi
> +841675357334 [UTC+7]
> linkedin.com/in/pierriko
>
> _______________________________________________
> Bf-python mailing list
> Bf-python at blender.org
> http://lists.blender.org/mailman/listinfo/bf-python
>
>



-- 
- Campbell