Each of your posts say you want to go back again. Only one direction makes sense.
You can project one unit along your orientation to find a 'forward' normal. That is a matter of simple trig.
Thats what i'm asking how to do. I've been getting an output which i posted here.
PYR are in degrees in second set...
Seems to be a slight inaccuracy. I cant get it working properly even though from what i know second set should work fine.
Ignore the Z = nonsense. Its just a placeholder.
EDIT The issue is that when X or Y is suppose to be full (-1 ,0, 1) they are but the other number is 6.E~~~ (first set)
Remember that 6.12303176911189E-17 is 0.00000000000000006 (I may have even missed a zero there!) so it is a very, very small deviation.
That's the issue i was having, now that i know what it is i can fix it. So my calculations are correct. Just a issue that i must work around.
Also as to the -1 rating. Thanks. It means alot to me.