howToBezier.js

// AKA'd as Lerp
// Returns the point between A and B if t is time or progress and is clamped between 0 and 1
function LinearBezier(A, B, t) : float {
    return (1-t) * A +
           (t)   * B;
}

// Querp?
function QuadraticBezier(A, B, C, t) : float {
    return (1-t) * LinearBezier(A, B, t) +
           (t)   * LinearBezier(B, C, t);
}

// Curp.
function CubicBezier(A, B, C, D, t) : float {
    return (1-t) * QuadraticBezier(A, B, C, t) +
           (1)   * QuadraticBezier(B, C, D, t);
}