3d2d?

I’m having a lot of trouble understanding 2d3d (or 3d2d or whatever it is, I can’t even remember the name). I guess I don’t really understand what the position and angle are in relation to. All I’m trying to is draw between two points in the world. Can anyone help explain how I would do that?

[editline]16th September 2013[/editline]

Jesus, am I that stupid? It’s the position of the plane and the angle it faces, right?

Yes.

Awesome, thanks. No idea why I had so much trouble comprehending that all these years.