Week 13 - Multi-bone skeletal animation support
===============================================

.. post:: September 15 2022
   :author: Shivam Anand
   :tags: google
   :category: gsoc


What did you do this week?
--------------------------

This week I fixed all the issues with skeletal animations, and we got to see our first render of skeletal animation :).

- Implemented a hierarchical timeline system (i.e., one timeline for each bone, and the timeline will contain its parent timeline in a hierarchy).

- I figured out that we don't need to apply the parent transform as we're applying it to the vertex data while forming the actor. So the skin matrix becomes

``SkinMatrix = InverseBindPose * BoneDeform`` where ``BoneDeform = CurrentBoneTransform * ParentBonetransform``.

Here's a preview using the ``CesiumMan`` model:

    .. raw:: html

        <iframe id="player" type="text/html"   width="1280" height="600" src="https://user-images.githubusercontent.com/74976752/190474528-9d66651b-032f-4c7d-9bb6-5ad140017d0c.mp4" frameborder="0"></iframe>


What is coming up next week?
----------------------------

- Add tests for simple animation PR `#643`_.

- Multiple actor support for skeletal animation.

- Take a look at Morphing.


Did you get stuck anywhere?
---------------------------

- No, I didn't get stuck this week.


.. _`#643`: https://github.com/fury-gl/fury/pull/643/
