[Radiance-general] Three phase method

[Andrew McNeil]

Hi Vayia,

You should consider using the new rfluxmtx to generate a transmission
matrix for your lightpipe the resulting matrix won't be in a BSDF XML file
format, but I don't think you need that format anyway. One benefit is you
can specify any geometry for the entrance and exit (genBSDF requires
parallel, rectangular ports).

A general (untested) approach is below.

Finally, I'm not sure what you mean by two different parallel BSDFs. Can
you elaborate?

Best,
Andy


insideport.rad:
#@rfluxmtx h=fk u=Y
materials & geometry

outsideport.rad:
#@rfluxmtx h=fk u=Y
materials & geometry

sky.rad:
#@rfluxmtx h=u u=Y
ground hemisphere
#@rfluxmtx h=r1 uY
sky hemisphere


cat sensorpoints.txt | \
rfluxmtx -faa -ab 12 -ad 50000 -lw 2e-5  -I \
 -y `wc -l < numeric/Space_1.map` \
 -  insideport.rad \
 materials.rad model.rad > view.mtx

rfluxmtx -ab 12 -ad 5000 -lw 2e-5 insideport.rad outsideport.rad \
 materials.rad model.rad > lightpipe.mtx

rfulxmtx -ab 2 -ad 1000 -lw 1e-3 outsideport.rad sky.rad \
 materials.rad model.rad > daylight.mtx

rmtxop view.mtx lightpipe.mtx daylight.mtx > dcoef.mtx

dctimestep dcoef.mtx sky.mtx > illuminance.txt





On Wed, Aug 20, 2014 at 4:46 AM, Vayia V <vaia13 at msn.com> wrote:

>  Hello all,
>
> I have some more questions regarding the three phase method,
>
> I understand that I cannot simulate bending pipes with the genbsdf.
> However I also need to simulate straight pipes that I think is able to be
> done.
>
> My question is if I need to specify the depth of the pipe somehow in any
> of the steps at the three phase method and how to do that.
>
> The way I create the geometry used at the daylight matrix and view matrix
> (meaning the two ends of the pipe) are in the "proper distance". But is
> this the correct way to do it (?) or the "entrance" of the pipe at the view
> matrix should be at the same position as the "exit" of the pipe at the
> daylight matrix (?) and then I specify the length of the pipe (that the
> "light" will travel through the pipe) between the "entrance" and "exit"? I
> suppose that maybe this way I could generate one bsdf of a long pipe and
> then use it for different length of pipes?
>
> Another question that I have is if I can use two different parallel BSDFs
> on one simulation.
>
> Thank you in advance,
>
> Vayia
>
>
> _______________________________________________
> Radiance-general mailing list
> Radiance-general at radiance-online.org
> http://www.radiance-online.org/mailman/listinfo/radiance-general
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.radiance-online.org/pipermail/radiance-general/attachments/20140820/b8aae941/attachment.html>