Sybren A. Stüvel 98bee41c8a IO: Reversed persistent ID order in exports to Alembic and USD
Each duplicated (a.k.a. instanced) object has a Persistent ID, which
identifies a dupli within the context of its duplicator. This ID
consists of several numbers when there are nested duplis (for example a
mesh instancing empties on its vertices, where each empty instances a
collection). When exporting to Alembic/USD, these are used to uniquely
name the duplicated objects in the export.

This commit reverses the order of the persistent ID numbers, so that the
first number identifies the first level of recursion. This produces
trees like this:

    ABC
     `--Triangle
         |--Triangle
         |--Empty-1
         |    `--Pole-1-0
         |        |--Pole
         |        `--Block-1-1
         |            `--Block
         |--Empty
         |    `--Pole-0
         |        |--Pole
         |        `--Block-1
         |            `--Block
         |--Empty-2
         |    `--Pole-2-0
         |        |--Pole
         |        `--Block-2-1
         |            `--Block
         `--Empty-0
             `--Pole-0-0
                 |--Pole
                 `--Block-0-1
                     `--Block

It is now clearer that `Pole-2-0` and `Block-2-1` are instanced by
`Empty-2`. Before this commit, they would have been named `Pole-0-2` and
`Block-1-2`.
2020-07-07 14:30:55 +02:00
2010-10-13 14:44:22 +00:00
2019-04-13 14:45:51 +02:00

.. Keep this document short & concise,
   linking to external resources instead of including content in-line.
   See 'release/text/readme.html' for the end user read-me.


Blender
=======

Blender is the free and open source 3D creation suite.
It supports the entirety of the 3D pipeline-modeling, rigging, animation, simulation, rendering, compositing,
motion tracking and video editing.

.. figure:: https://code.blender.org/wp-content/uploads/2018/12/springrg.jpg
   :scale: 50 %
   :align: center


Project Pages
-------------

- `Main Website <http://www.blender.org>`__
- `Reference Manual <https://docs.blender.org/manual/en/latest/index.html>`__
- `User Community <https://www.blender.org/community/>`__

Development
-----------

- `Build Instructions <https://wiki.blender.org/wiki/Building_Blender>`__
- `Code Review & Bug Tracker <https://developer.blender.org>`__
- `Developer Forum <https://devtalk.blender.org>`__
- `Developer Documentation <https://wiki.blender.org>`__


License
-------

Blender as a whole is licensed under the GNU Public License, Version 3.
Individual files may have a different, but compatible license.

See `blender.org/about/license <https://www.blender.org/about/license>`__ for details.
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