POV-Ray : Newsgroups : povray.general : FEATURE REQUEST: Exclude light : Re: FEATURE REQUEST: Exclude light Server Time
5 Aug 2024 14:16:10 EDT (-0400)
  Re: FEATURE REQUEST: Exclude light  
From: hughes, b 
Date: 22 Oct 2002 00:04:57
Message: <3db4ce69@news.povray.org>
"Rohan Bernett" <rox### [at] yahoocom> wrote in message
news:web.3db4b7d5ee9636d518ccf4f70@news.povray.org...
> I've just tried using light groups and negative rgb values for the lights,
> and it does work. The problem with what I was trying, was that I didn't
> realise at the time was that the dark spots (from the texture used) would
> obscure parts of the lower sphere.

Got to use a widespread transparency if the image doesn't have sharp
boundaries of color.

> "transparent_light" - keyword for using transparent light
>
> transmit/filter - transparency method to use
>
> 0,1 - transparency for no light, full brighness (e.g. 0.5,0.9 gives 50%
> transparency in full darkness, and 90% transparency in full light)

Interesting idea, yeah. Same thing for shadows might also be useful. At
least I can't think of any reasons for not having such a feature, at the
moment anyway.


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