private static Vector3AnimationCurve GetTangentCache(Vector3 p0, Vector3 p1, Vector3 p2, Vector3 p3, int steps)
{
var curve = new Vector3AnimationCurve(); //time = distance, value = time
var delta = 1f / steps;
for (var i = 0; i < steps + 1; i++)
{
curve.AddKey(
delta * i,
GetForward(
p0,
p1,
p2,
p3,
delta * i)
.normalized);
}
return(curve);
}
