=============================== This is a new armature deform interpolation method using Dual Quaternions, which reduces the artifacts of linear blend skinning: http://www.blender.org/development/current-projects/changes-since-244/skinning/ Based on the paper and provided code: Skinning with Dual Quaternions Ladislav Kavan, Steven Collins, Jiri Zara, Carol O'Sullivan. Symposium on Interactive 3D Graphics and Games, 2007.