Third degree curve passing through given points with or without restraint at the ends.

- Shortcut: Ctrl+S
- We give a name.
- Enter a command like [v0,A1,A2,...,An,v1]. The complex numbers v0 and v1 are the affixs of the tangent vectors at the ends (if zero : there is no restraint), and the A1,...,An complexes are affix’s points interpolated by the curve.
- The total number of the calculated points can be modified in the Attributs with the variable NbPoints.
- Corresponding graphical command: Spline (to be used in a User-defined type element).