Which is better to get terrain normals?

Unity Engine
1

I’ve been using a RaycastHit to determine the normal of the terrain below my objects. Just now, I’ve discovered something called GetInterpolatedNormal(). Which is better, or rather, what is the difference between the two?

2

Between which ones? you only talked about GetInterpolatedNormal()…

As far as I know, the GetInterpolatedNormal() will doit for you automatically, instead of you making it manually :S

3

Sorry. I was implicitly suggesting the RaycastHit.normal resulting from Physics.Raycast as the firt option.

4

If you are using the raycast only for the normal, than I assume it would be much more expensive than using GetInterpolatedNormal.