Shoulder Straps and Wire Deformers


#1

I have a rig where a character carries a backpack while holding the straps. I want the center of the straps to follow his hands while the top an bottom remain restrained to the backpack. I used a Wire Deformer and it worked great, but when I turn the model, the object remains pointed in the initial direction like in the picture below. Anyone have any ideas on how I can easily achieve the same effect? I know there are stretchy IKs, but I have no idea how to make it stretch in the middle


#2

Well in case anyone else find this thread and is looking for a so-so solution, here’s what I ended up with.

I totally ditched the wire and built a really simple piece of geometry around the strap (Maybe 7 faces or so). I clumped all the Vertex’s into Clusters roughly in the same spots as my wire deformer had. Then I attached the geometry to the strap using a Wrap Deformer. Then I turned off the viability on my new piece of geometry.

Voila! Bootleg Wire deformer with the ability to rotate and not impload… I’m sure there’s better ways and if you have any I would probably use them.


#3

Yeah that’s a pretty much it… if your straps are really dense then what you wanna do is create a low res nurbs ribbon. Then you put clusters on it’s cv’s. On the higher res geo you can either use clusters or bones as the deformer and then you use follicles to constrain the bones or clusters to the nurbs ribbon. This way you have fewer controls to mess with in order to get a smooth deformation of the strap.


#4

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