Problems with Expressions


Rose’s face is proving to be a bit more trouble than I originally expected…

Some of her expressions require just a hair more know-how than I currently have, or have the patience for.  For example, I have it so her smile can be cranked up to 200% for a nice, Joker-like grin.  This requires another shape to move the nose up, but I hav no idea how this will mix with other nose shapes.  Her teeth and gums will also need to move, though I’m starting to think it’ll be better if I just don’t push her that far.


One annoying problem comes from her “mouth corner in” shapes – on their own, each of these will move the mouth to either side, along with the nose.  Combined – with the aid of a corrective shape – they form the “pucker” shape.  But when I move the sliders from 0 – 1, her nose shrinks and moves up at 0.5, only to return to normal at 1.  I tried to add another correction to compensate for this, but it only made things worse – now her nose shakes te 0.25 and 0.75.


But by far the biggest headache might be Maya’s expressions.  I’ve never used them much, and definitely not for faces – I’ve always preferrred to use utility nodes.  But I like the idea of only having a few expression nodes, rather than dozens or hundreds of utilities.  Figuring out the code to do the jobs of the utilities is a challenge, but not too difficult.  The real headache comes from Maya inexplicably mixing up my code – expressions that were working find before, and that I haven’t even touched recently, may suddenly drive the wrong shapes, or a control in an expression will be swapped out for another.  This could be a big problem, and I have no idea why it’s even happening.