Offers finer control for tweaking small points in the face,.This can range from the simple jaw joint/Blend Shapes set up we will be making in the labs, to more mixed rigs which use joints in the eyes or brow as well to alter small details after Blend Shapes have created the general shape of the face. That being said, Disney’s Tangled made use of a Joint based facial rig and wire-like deformers to control Rapunzel, so the set-up can change easily depending on the company and/or requirements of the rig.Īnother set-up which has been popping up in the forums I’ve visited is a hybrid set up of joints and Blend Shapes. Thus animators can more easily switch between expressions and put more life into the character. Using blend shapes, riggers can put much more control and movement into the face, controlling the mesh in finer details. The limitations in technology are a lot less strict and dependent on the individual/company.
My rig is being aimed towards animation however and in this area of practice blend shapes seems to be the preferred set-up. One universal benefit to Joint set ups is that they offer finer movements which can be used for complicated expressions. Thus a few joints can be used to control the main areas (jaw, eyes, brow) which saves the rigger time and prevents the rig from being overly complicated for its needs. Also for in-game scenes rendered in real-time it is often the case that the face does not require as much movement/detail as it would in a cutscene where it is a point of focus. The main reason for this is that it requires less memory in the engine. In video games the most popular choice is a Joint based set-up. Limitations of technology are a heavy factor in their use and so the area of practice which the rig is aimed towards has a large influence on choices.
Joint based facial rigs pro#
The general consensus seems to be that both Joint set ups and Blend Shapes have their equal shares of pro and cons.
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