This dialog enables you to edit the flare and twist angles:
You can modify the flare and twist angles, that are defined either along a longitudinal or across a lateral.
Flare and twist can only be modified if:
- surface curves or points on surface curves are selected
- the surface has a spine (create a spine using (Surface Tools) Manage tab > Add panel > Items > Spine).
Flare — The flare angle defines the direction of the longitudinal tangent relative to the spine tangent:
If the flare angle is positive, the longitudinal diverges from the spine; if it is negative, the longitudinal converges with the spine.
Twist — Twist forces the longitudinal to twist about the spine:
If the twist angle is positive, the longitudinal rotates in a counter-clockwise direction as it passes through the lateral.