how to determine the direction that an object is being viewed from

[Anonymous]

Is there a GDL global variabel or command to find out what the direction is that an object is being viewed from in a section/elevation window?
I want to make a text automatically to be rotated so you can read it in any section/elevation window.

[Pertti Paasky]

Discussed before:
http://archicad-talk.graphisoft.com/viewtopic.php?p=233908&highlight=view+angle#233908