Dev:Bone Layer
From Synfig Studio :: Documentation
Initial seed for concepts
This portion of IRC logs sets the basis for the implementation of a Bone Layer. The interesting part is from 16:49 to 18:56.
Also this one has some interesting thoughts. From 8:20 to 14:43
Concepts
This is a not sorted list of concepts what I would write to let me clarify my self and also allow others to understand the next sections.
Bones in 2D animation
Initial intention of Bones is attempt to emulate the skeleton of a vertebrate animal. In this way you have a skin and a skeleton. Skin is associated to the bones of the skeleton. When the skeleton moves the skin follows.