orthographics parallel projection

I am trying to draw a bezier surface using orthographic paralle projection to view the surface. VRP (0,0,0) and VPN is (0,0,-1).

I'm just trying to see where my eyes are located and in which direction Im viewing the object

Is the following figure correct? My eyes are located at VRP (0,0,0) (red circle) looking at the -z side. VPN is in green. Object is yellow.

http://i45.tinypic.com/i4pc35.png

When orthographically projecting you collapse all points on a surface. If that surface is the (0, 0, +/-1), all you have to do is make the Z coords zero.