[Radiance-general] Radiance, objline, objpict etc..

[steve michel]

Hi Thomas,

MARK THIS SOLVED


I had created a 'glow' material and applying it to the same polygon in my ies.rad file. SO I got a render with my fixtures showing but still no illumination! I was trying to overlap or layer a glow material on a distribution's polygon. So you are right that the two might interfere. (But I can see where that might be useful to avoid  the extra step of two distinct polygon geometry for the same thing (which I have done before with erco fixtures 3d geometry)) 



BUT The simpler method of deleting the -i option in ies2rad worked...I see the fixture and the light distribution...

The next challenge is to use a single light distribution material and apply to multiple similar geometry in the scene... To isolate the problem, I've been hand editing each fixture geometry and duplicating the same ies.rad parameters to each...


thanks to all
Steve



----------------------------------------
> From: tbleicher at arcor.de
> Subject: Re: [Radiance-general] Radiance, objline, objpict  etc..
> Date: Sun, 27 Jan 2008 11:31:48 +0000
> To: radiance-general at radiance-online.org
> 
> 
> On 26 Jan 2008, at 18:50, steve michel wrote:
> 
>>
>> Rob,
>>
>> The fixture is a recessed fluorescent with a flat translucent lens;
> 
> Being recessed the fixture will have no uplight component. Did you
> check the orientation the IES file will have in the scene? Typically
> major output direction will point downwards (-z). For a downlight you
> should not need any rotation, just lift (xform -t) the *.rad file to
> the right height and place in your scene.
> 
>> therefore my needs are simply to show a glow for the lens on the same
>> plane as the ceiling. I applied the ies distribution to a simple  
>> polygon.
> 
> Did you create the polygon yourself? Ies2rad (without -i option!) will
> do that and you don't need any further polygons. They will only  
> interfere
> with you're distribution. The only problem is that the polygon will have
> the size of the luminous area not the of the actual fitting.
> 
> 
> Regards,
> Thomas
> 
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