News 6th August 2008: Link to our new paper. 5th June 2007: Cg vertex shader combining dual quaternion skinning with scale/shear joint transformations. 6th May 2007: An optimized Cg vertex shader (using a fast trick to rotate vector by quaternion). Overview The common skin deformation technique (linear blend skinning) sometimes produces non-natural results, such as below. Several more advanced m