createCzechCubic MethodStatic

Create a czech cubic. This is y = m*x^3 with

• x any point on the x axis.
• fraction along the spiral goes to x = fraction * L.
• m is gamma/(6RL).
  • 1/(6RL) is the leading term of the sine series.
  • gamma = 2R/sqrt(4RR-LL) pushes y up a little bit to simulate the lost series terms.

createCzechCubic(localToWorld: Transform, nominalLx: number, nominalR1: number, activeInterval?: Segment1d): undefined | DirectSpiral3d

Returns - undefined | DirectSpiral3d

Defined in

• curve/spiral/DirectSpiral3d.ts Line 202