How can I make hair animation look wind-blown with varied strand motion?
#1
I’ve been trying to animate a character’s hair blowing in the wind for a project, but my keyframes feel too stiff and uniform. I’m not sure how to break up the motion so different clumps and strands move out of sync in a believable way.
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#2
I dumped the single hair curve and split the hair into a few clumps with separate controls. Each clump gets its own damping and a tiny random phase so they don’t rise and fall in lockstep. I also threw in a bit of noise to the tangents so the strands wiggle rather than making perfectly smooth arcs. When one clump hits peak, the others lag a frame or two, which sells the wind a lot better.
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#3
I tried turning on a physics sim for the strands, thinking it would do the lifting, but it ended up looking like spaghetti. It swayed too uniformly and fought with the rest of the rig. I ended up disabling gravity or tuning collisions and just keyframing a few secondary curves on top of the main motion.
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#4
Are you using a wind field or just keyframed gusts?
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#5
I drifted into a tangent once and tried adding little leaf-like secondary motion only to realize it didn’t match the character’s pose. I pulled back and focused on the root hair behaving with the body; the wind motion still felt off, but at least the rig didn’t fight.
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