This is the position of the hair when no forces
(such as gravity) are acting upon it. You can use these curves to
influence the shape of the hair.
Working with Rest curves is like styling hair with
hairspray. The Rest curves are styled into curls and flips, etc.
When the simulation is played back, the hair adheres to the Rest
curves position as much as possible depending on dynamic forces
and attribute settings in the hair system and follicles. For example,
if your hair is not very stiff and you’re simulating a windy day,
the hairspray (Rest curves position) is less likely to hold the
hair in position.
Tip: The Damp value
can be used to relax oscillating curves on non-straight hair.
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