Gravity Modifier
This tag is a helper operator to allow you to cheat the effect of gravity on hair quickly and intuitively. A special slope graph lets you adjust how much gravity is applied along the length of the strands (this can also be controlled through a map). You can also control gravity direction, global amount, and even add collision objects to prevent hair from going into them.
Parameters
Strand Group
Specifies a strand group to which this operator is applied. Only strands within the specified group will be modified. Using an empty value will modify all strands.
Force
The amount of gravity force applied to the hair.
Force Channel
Use a Guide Channel to control the Force amount.
Force Multiplier
Controls the amount of gravity applied across the distribution mesh surface
Force Ramp
Specifies the amount of bending caused by this operator along each strand's length
Gravity Direction
Specifies which direction, in world coordinates, the gravity is pulling the hair