public void SampleDerivs(Vector3[] results, float u0 = 0f, float u1 = 1f)
{
var p0 = begin.position;
var p1 = control1.position;
var p2 = control2.position;
var p3 = end.position;
int len = results.Length;
var u = u0;
var du = (u1 - u0) / len;
for (int i = 0; i < len; ++i)
{
u += du;
results[i] = Curves.CubicBezierDeriv(p0, p1, p2, p3, u);
}
}
public Vector3 DerivAt(float u)
{
return(Curves.CubicBezierDeriv(begin.position, control1.position, control2.position, end.position, u));
}
