[Radiance-general] RE : Light Shelf Reflections

[Shamim Javed]

I believe this is what I have already done.  I have tried to document my
efforts in the following shared folder in dropbox:
https://www.dropbox.com/home/SJ_Light%20Shelf%20Reflection%20Files_12mar

The folder has my ecotect file, Radiance files and few pages of PDF trying
to clarify my question.  Any help will be much appreciated!

Shamim.

On Tue, Mar 12, 2013 at 1:00 PM, shailan zareiy <sh.zareiy at gmail.com> wrote:

> hi Shamim
> do you assign the mirror surfaces as secondary light source? if you use
> ecotect for modelling, in the material assignment of this software, in the
> advanced export you should write this discription :
> void mirror materail name
> 0
> 0
> 3  1 1 1
> does it solve the problem?
>
>
> On Mon, Mar 11, 2013 at 6:45 PM, Compagnon Raphaël <
> Raphael.Compagnon at hefr.ch> wrote:
>
>> If all these surfaces are mirrors, then you cannot see anything....
>> unless:
>> - there is a non-mirror reflecting object somewhere in your scene that is
>> supoposed to be lit by the multiple-reflecting light path; since it will
>> reflect light in many directions you should see it!
>> or
>> - your point of view is located somewhere on the multiple-reflecting
>> light path and your view direction points towards it. Then you should
>> directly see the light source appearing as an image on the last mirror.
>>
>> Raphaël
>> ________________________________
>> De : Shamim Javed [javeds2006 at gmail.com]
>> Date d'envoi : lundi 11 mars 2013 15:56
>> À : Radiance general discussion
>> Objet : Re: [Radiance-general] Light Shelf Reflections
>>
>> I am hoping to see multiple reflections of the light beam reflected off
>> the light shelf top surface in both the floor and the ceiling (all of which
>> are mirror surfaces).
>>
>> On Mon, Mar 11, 2013 at 10:40 AM, Jack de Valpine <jedev at visarc.com
>> <mailto:jedev at visarc.com>> wrote:
>> Hi Shamim,
>>
>> What changes are you expecting to see?
>>
>> -Jack
>>
>> --
>> Jack de Valpine
>> President
>>
>> Visarc Incorporated
>> www.visarc.com<http://www.visarc.com>
>>
>> channeling technology for superior design and construction
>>
>> On 3/11/2013 10:03 AM, Shamim Javed wrote:
>> I am using Radiance via Ecotect.  I have played around with changing the
>> values for -dr, -av and -ab without seeing any change in the image output.
>>
>> On Mon, Mar 11, 2013 at 9:20 AM, Christopher Rush <
>> Christopher.Rush at arup.com<mailto:Christopher.Rush at arup.com>> wrote:
>> Are you using the default parameters for rpict/rtrace? Have you tried
>> setting the -dr parameter greater than 2? If you post the command you are
>> using to calculate the reflections, it may be easier to comment. I suspect
>> it will be more complicated than the -dr setting, but that's a start.
>>
>> >  I have been unsuccessful, so far, to generate  more than two
>> reflections.
>>
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