NURBS HelixKeyCreator \ Create \ Spline \ NURBS-Helix
Location: Create>Spline>NURBS Helix
Use the NURBS Helix function to create a 3D spline that simulates a helix curve with an orientation that you define. This function allows you to set the direction, pitch, length, axis, and start and end points of the spline.
NOTE: Control Points can be modified through the Edit dialog that appears when a NURBS spline is selecting using the Generic Edit function.
Using the Function
This optional setting sets the radius at the end of the helix. (The start point still determines the radius at the beginning.) An end radius of zero will create a cone shaped spiral.
Select a parameter for the NURBS Helix from the available options.
Counter-clockwise - When selected, the helix direction follows counter-clockwise.
Constant - Pitch will remain constant along the entire helix.
Variable - Enables pitch entry list box for joined helical sections of differing pitch.