/// <summary>
/// Gets the curve acceleration at t.
/// </summary>
/// <param name="t">The curve position parameter.</param>
/// <returns>The acceleration vector</returns>
public Vector3 GetAcceleration(float t)
{
int i;
if (t >= 1f)
{
t = 1f;
i = _points.Length - 4;
}
else
{
t = Mathf.Clamp01(t) * curveCount;
i = (int)t;
t -= i;
i *= 3;
}
return(transform.TransformPoint(Bezier.GetSecondDerivative(_points[i], _points[i + 1], _points[i + 2], _points[i + 3], t)) - transform.position);
}
/// <summary>
/// Gets the acceleration.
/// </summary>
/// <param name="startIndex">The start knot index.</param>
/// <param name="endIndex">The end knot index.</param>
/// <param name="t">The curve position parameter.</param>
/// <returns>The acceleration vector.</returns>
public Vector3 GetAcceleration(int startIndex, int endIndex, float t)
{
int i;
if (t >= 1f)
{
t = 1f;
i = (endIndex - 1) * 3;
}
else
{
t = Mathf.Clamp01(t) * (endIndex - startIndex);
i = (int)t;
t -= i;
i = (startIndex + i) * 3;
}
return(transform.TransformPoint(Bezier.GetSecondDerivative(_points[i], _points[i + 1], _points[i + 2], _points[i + 3], t)) - transform.position);
}