👉 Spline is a type of curve or surface in mathematics that can be described by a set of parametric equations. These equations are designed to fit curves and surfaces that have non-linear relationships between their parameters, which makes them useful for modeling complex geometric shapes. Spline curves can be used to approximate the shape of an object without having to explicitly specify all its parameters. This is known as spline interpolation or approximation, where the curve is approximated by a series of more complicated functions that fit the data
