[Radiance-general] rotation

[Richard Morris]

Hi Chris,

If you change the order you write the translation/rotation commands in
xform it should solve the problem...
 
The IES file is inserted at XYZ co-ordinate 0,0,0. With your command
you've translated it approx 1m from 0,0,0 and then rotated it in a big
arc around 0,0,0.

!xform -n spot1 -t 1.25 1 3.8 (-rx -ry -rz being used here) spotc.rad

...and it disappears out of your view (zoom out and you'll probably find
it somewhere!)


The answer is to rotate the luminaire first and then place it in
position i.e.
 
!xform -n spot1 (-rx -ry -rz being used here) -t 1.25 1 3.8 spotc.rad

Hope this helps
Richard
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