Coil attributes

The coil attributes impact the shape of the coils.

Refer to Shape the curls and Coil tool for more information.

To find these attributes, select a coil input curve and go to Attribute Editor > Extra Attributes > Coil Properties.

Property	Description
Natural Radius	Set the overall radius of the coils. Once the overall radius is set, you can make local adjustments along the curve using the Coil manipulator.
Natural Pitch	Set the overall spacing between the coils. Once the overall pitch is set, you can make local adjustments along the curve using the Coil manipulator.
Linear Mass Density	Set the mass to length ratio of the hair. Increasing the linear mass density causes the helix to stretch more toward the root, which is useful for modeling wet hair.
Bending Stiffness	Set the coil's resistance to bending.
Twisting Stiffness	Set the hair's resistance to twisting.
Root Phase	Set the rotation of the coil around its center line.
Root Blending Length	Set the position of the root of the helix curve, allowing you to blend the root of the helix and the root of the center line over a distance.
Heterogeneity	Set how heterogeneous the coil is. Heterogeneity generates random changes in the natural pitch of the helix, introducing variations in the coil.
Perversion Density	Add helical perversions to the curve, replicating helical perversions seen in strands of curly hair.
Seed	Set the seed value to control randomness.
Num Samples	Set the number of helical segments used by the physical model. Increasing this number improves the accuracy of the simulation at the cost of performance.
Output CV Density	Set the number of points generated on the output curve of the helix according to its length.