[Radiance-general] Orientation of glazing in three-phase method

[David Geisler-Moroder]

Dear Minchen,

as a follow-up on that - you should definitely not flip the surface if you
are using rfluxmtx to calculate your matrices. Quoting from the manpage:
"Rays always emanate from the back side of the sender surface and arrive at
the front side of receiver surfaces. In this way, a receiver surface may be
reused as a sender in a subsequent rfluxmtx calculation and the resulting
matrices will concatenate properly."

Best,
David


2018-03-24 17:38 GMT+01:00 Greg Ward <gregoryjward at gmail.com>:

> I do not believe that you should flip the window orientation in the
> 5-phase method.
>
> -Greg
>
> *From: *"WEI, Minchen [BSE]" <minchen.wei at polyu.edu.hk>
>
> *Date: *March 24, 2018 6:11:24 AM PDT
>
>
> Dear all,
>
>
>
> A question regarding the orientation of glazing in three- and five-phase
> calc.
>
>
>
> When calculating the view matrix, I know the glazing aperture should
> facing towards the interior. Should I flip the orientation of the glazing
> aperture towards the exterior when calculating the daylight matrix? I see
> the Matrix-based tutorial did not do that, but an answer to a past question
> in the mailist said “yes”.
>
>
>
> Thanks,
>
>
>
> Tommy
>
>
>
> --
>
> *Minchen (Tommy) Wei, PhD*
>
> The Hong Kong Polytechnic University
>
> (+852)-3400 3606 <+852%203400%203606> minchen.wei at polyu.edu.hk
>
>
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>
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