[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Brad] Help:Setting up a radiance system--brad
From: |
steve michel |
Subject: |
Re: [Brad] Help:Setting up a radiance system--brad |
Date: |
Sat, 21 Apr 2007 16:11:35 -0400 |
Thanks Rob for ltview; it did allow me to quickly 'preview' a lighting
fixture via radiance and see the difference with brad's output.
I took the liberty of attaching my results.
Thomas: your item #5 in the list of brad procedures worked successfully to
export my lighting data to radiance. For Brad export I positioned my
lightsource close to a surface to 'see' its 'signature'. The obvious
hypothesis for a and up/down T5 geometry is a linear shaped illumination on
a horizontal surface (one foot from the ceiling) but I was getting a
circular shape (see attached file) and also strange, the lighting polygon is
casting a shadow on the cube (no other object in the room). It appears as
though a wrong circular is positioned above the self-luminous polygon.
Any feedback on interpreting these results and/or a work around solution
would help.
regards
Steve
From: Rob Guglielmetti <address@hidden>
Reply-To: address@hidden, address@hidden
To: address@hidden
Subject: Re: [Brad] Help:Setting up a radiance system--brad
Date: Thu, 19 Apr 2007 11:11:13 -0600
This may or may not help you, but I've attached a shell script I wrote
called ltview. This takes a luminaire.rad file that was created with the
ies2rad utility and loads in a box with one side removed, increases the
-ds parameter (so the light pattern is better defined) and sets up a view
looking into the box along the y axis, in rvu. It's just a handy little
way to spot check that your ies2rad went smoothly. I have used this to
uncover errors in the ies files before.
The -bs switch controls the size of the box; the default is 24, because I
used to work in inches in my previous life. That would give me a 4' square
box. So to use this with a luminaire file that you converted in meters,
set -bs to .61 or so, for a box that would just contain a 4' fixture.
You can of course make the box any size you want, but I usually make it
tight to the fixture so that I can see the beam accurately.
I'm not using Brad at the moment so I can't give specific advice with those
issues, but I thought I'd offer my utility as a useful spot checker.
- Rob Guglielmetti
<< ltview.zip >>
_______________________________________________
Brad mailing list
address@hidden
http://lists.nongnu.org/mailman/listinfo/brad
_________________________________________________________________
Win a webcam! Nominate your friends Windows Live Space in the Windows Live
Spaces Sweetest Space Contest and you both could win!
http://www.microsoft.com/canada/home/contests/sweetestspace/default.aspx
ltview-t5-test.png
Description: PNG image
Brad-t5-test.png
Description: PNG image
- Re: [Brad] Help:Setting up a radiance system--brad, (continued)
- Re: [Brad] Help:Setting up a radiance system--brad, steve michel, 2007/04/16
- Re: [Brad] Help:Setting up a radiance system--brad, Thomas Bleicher, 2007/04/16
- Re: [Brad] Help:Setting up a radiance system--brad, steve michel, 2007/04/17
- Re: [Brad] Help:Setting up a radiance system--brad, Thomas Bleicher, 2007/04/18
- Re: [Brad] Help:Setting up a radiance system--brad, steve michel, 2007/04/19
- Re: [Brad] Help:Setting up a radiance system--brad, Rob Guglielmetti, 2007/04/19
- Re: [Brad] Help:Setting up a radiance system--brad, Thomas Bleicher, 2007/04/19
- Re: [Brad] Help:Setting up a radiance system--brad, Thomas Bleicher, 2007/04/19
- Re: [Brad] Help:Setting up a radiance system--brad, Francesco Anselmo, 2007/04/20
Re: [Brad] Help:Setting up a radiance system--brad,
steve michel <=