POV-Ray : Newsgroups : povray.beta-test : spotlight in object media problem Server Time
1 Nov 2024 09:20:17 EDT (-0400)
  spotlight in object media problem (Message 1 to 3 of 3)  
From: Leroy Whetstone
Subject: spotlight in object media problem
Date: 10 Jun 2002 08:13:32
Message: <3D04B485.39EBD568@joplin.com>
I'm running POV-beta3.5 RC5 windows on an athlon 1.2ghz.
When you put a spot light inside an object media there is a an strange artifact.

I placed an image 'Spotlight in media' in povray.binaries.image.

There is a work around if you make a spotlight by hand using a open cone and a
point light then the artifact goes away.

This small progam show the problem.

camera{ location <0,8,-15> look_at <0,0,-3> }

light_source{<0,2,8> color rgb 1 spotlight point_at <3,2,12> radius 60 falloff
120}

sphere{0,450 pigment {rgbt .5}
     interior {media{ emission<.1,.2,.3> absorption<.4,.4,.4> }}
 no_shadow hollow}

//ground
box{<-80,0,-80><80,-1,80> pigment{checker rgb 1 rgb<1,0,0>}}




--
Have Fun!


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From: Thorsten Froehlich
Subject: Re: spotlight in object media problem
Date: 10 Jun 2002 14:06:52
Message: <3d04eabc$1@news.povray.org>
In article <3D04B485.39EBD568@joplin.com> , Leroy Whetstone 
<lrw### [at] joplincom>  wrote:

> camera{ location <0,8,-15> look_at <0,0,-3> }
>
> light_source{<0,2,8> color rgb 1 spotlight point_at <3,2,12> radius 60 falloff
> 120}
>
> sphere{0,450 pigment {rgbt .5}
>      interior {media{ emission<.1,.2,.3> absorption<.4,.4,.4> }}
>  no_shadow hollow}
>
> //ground
> box{<-80,0,-80><80,-1,80> pigment{checker rgb 1 rgb<1,0,0>}}

I see absolutely nothing wrong here.  Nor am I able to locate the images you
said you posted...

    Thorsten


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From: Slime
Subject: Re: spotlight in object media problem
Date: 10 Jun 2002 16:47:27
Message: <3d05105f@news.povray.org>
> I see absolutely nothing wrong here.  Nor am I able to locate the images
you
> said you posted...

The image is pretty old, in p.b.i. You might have to scroll down to get to
it. It's there, though. Unless it's old enough that your news client deleted
it.

 - Slime
[ http://www.slimeland.com/ ]


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