Three typical basics from > 50 of that stuff ... bed time reading.
1. Lagrange in two applications, including the modeler.
2. Hermite Interpolation ... like smooth path car racing !
3. Polyline suggests convex hull robotics.

Jean ... kind of refreshed/revisit

Spline Hermite Polyline [Sub_Spaces].sm (44,91 KiB) scaricato 1084 volta(e).
Spline Hermite Interpolation EXPLAIN.sm (56,73 KiB) scaricato 1274 volta(e).
Spline Hermite Interpolation.sm (77,41 KiB) scaricato 1305 volta(e).
Spline0 Quadratic Lagrange Knots Copy.sm (106,66 KiB) scaricato 1323 volta(e).