dgreenheck:

Directional lights don't have a position. They come down at one angle for all objects in the scene, regardless of their position. The sun acts as a directional light within a small area; it doesn't matter where you stand, it's always going to cast the same shadow.

dadoo Games:

This post describes a bit about the 3 default positions, but doesn't give specifics. Your best bet is to set a breakpoint and inspect the DirectionalLight0, DirectionalLight1, and DirectionalLight2 properties of a BasicEffect.

EDIT: position is probably a bad choice of words above, I meant direction

klempie:

dgreenheck:

Directional lights don't have a position. They come down at one angle for all objects in the scene, regardless of their position. The sun acts as a directional light within a small area; it doesn't matter where you stand, it's always going to cast the same shadow.

Ohhhh.

That makes more sense to me now. I was wondering why they didn't have a position member and thought the position was private or something. So the follow up then is, say you 've got a surface and the direction vector is set in such a way that one side is lit but the other is in shadow. Will reversing the direction vector light up the shadowed side and vice versa?