Here's a quick hack that will display the axis at the bottom of the main AC3D window (in the message area).
-no warranty-
With a text editor, edit tcl/ac3d.tcl and find:
Code:
proc set_custom_axis { var } {
after:
Code:
set cent [ac3d get_selection_centre]
(and before the next "}", insert a line:
Code:
display_message "axis: $axis"
If you would like the axis to appear in the console, use:
instead
I'm not sure if this would be useful to others - why do you want this info?