![[bezier.gif|invert_Sepia]]
A type of [[Parametric Spline]], a [[Polynomial]] curve / [[Hermite Interpolation]]. This a
For a bezier curve, not only are their 'anchor' [[Point|points]] restricting the position of the curve at certain values, there are also 'anchor points' which determine how the curve 'aproaches' to each anchor.
Typically bezier curves are [[Cubic]].
Given two anchor points $(x_{i},y_{i}), (x_{i+1},y_{i+1})$ and two control points (modeled as [[Vector|vectors]] with a root at a control point) $\vec v_{i}, \vec u_{i+1}$.
$\huge
\begin{align}
\vec S_{i}(t) &= (t-1)(2t+1)\vec x_{i} \\
&+ t^{2}(2t-3)\vec x_{i+1} \\
&+ t(t-1)\vec v_{i} \\
&- t^{2}(t-1)\vec u_{i+1}
\end{align} $
theres a cool shortcut to get the control points based on the derivative
bezier from $\vec A$ to $\vec B$ with derivatives needing to be $\vec A'$ and $\vec B'$
the control points would be $\set{A,B, A+\frac{A'}{3}, B-\frac{B'}{3}}$