POV-Ray : Newsgroups : povray.general : Converting halos (old question I know, but please read) Server Time
3 Aug 2024 14:20:17 EDT (-0400)
  Converting halos (old question I know, but please read) (Message 1 to 6 of 6)  
From: evbarry
Subject: Converting halos (old question I know, but please read)
Date: 13 Jan 2004 02:25:01
Message: <web.40039bcf889dff2267a4524c0@news.povray.org>
#declare EngineHalo =
sphere { 0, 0.8
  pigment { color rgbt <1, 1, 1, 1> }
  halo {
    emitting
    spherical_mapping
    cubic
    color_map {
      [ 0.0 color rgbt <1, 0, 0, 1>  ]
      [ 0.666 color rgbt <1, 1, 1, -1> ]
      [ 1   color rgbt <1, 1, 1, -1> ]
    }
  }
  hollow
  scale 0.5*x+y+z
}

I've been trying to convert some old models but my one attempt at a halo
using media ended up with a weak-looking transparent thing. Could someone
convert this for me? It should be very easy for an expert.

Thanks


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From: Tom Melly
Subject: Re: Converting halos (old question I know, but please read)
Date: 13 Jan 2004 04:37:27
Message: <4003bc57@news.povray.org>
"evbarry" <nomail@nomail> wrote in message
news:web.40039bcf889dff2267a4524c0@news.povray.org...

sphere { 0, 0.8
  pigment { color rgbt <1, 1, 1, 1> }
  interior{
    media {
      emission 1
      density{
        boxed
        color_map {
          [ 0.0 color rgbt <1, 0, 0, 1>  ]
          [ 0.666 color rgbt <1, 1, 1, -1> ]
          [ 1   color rgbt <1, 1, 1, -1> ]
        }
      }
    }
  }
  hollow
  scale 0.5*x+y+z
}

?


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From: Hughes, B 
Subject: Re: Converting halos (old question I know, but please read)
Date: 13 Jan 2004 05:08:26
Message: <4003c39a$1@news.povray.org>
Nice try Tom.

Those transmit (and filter, if were used) values are ignored so that can be
removed from the densities.

For pattern type 'boxed' is wrong since halo's cubic followed the spherical
mapping. I think maybe cubic_wave is the way to go then, but I'm not
completely sure if it is the same formula.

camera {location -3*z look_at 0}

sphere { 0, 0.8
  pigment { color rgbt <1, 1, 1, 1> }
  interior{
    media {
      emission 1
      density{
        spherical
        color_map {
          [ 0.0 color rgb <1, 0, 0>  ]
          [ 0.666 color rgb <1, 1, 1> ]
          [ 1   color rgb <1, 1, 1> ]
        }
    cubic_wave
      }
    }
  }
  hollow
  scale 0.5*x+y+z
}

-- 
Bob H.
http://www.3digitaleyes.com


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From: Tom Melly
Subject: Re: Converting halos (old question I know, but please read)
Date: 13 Jan 2004 05:24:50
Message: <4003c772@news.povray.org>
"Hughes, B." <omn### [at] charternet> wrote in message
news:4003c39a$1@news.povray.org...
> Nice try Tom.

Hey, if I want to be patronised, I'll talk to my kids.... ;)


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From: Hughes, B 
Subject: Re: Converting halos (old question I know, but please read)
Date: 13 Jan 2004 08:08:08
Message: <4003edb8$1@news.povray.org>
"Tom Melly" <tom### [at] tomandlucouk> wrote in message
news:4003c772@news.povray.org...
> "Hughes, B." <omn### [at] charternet> wrote in message
> news:4003c39a$1@news.povray.org...
> > Nice try Tom.
>
> Hey, if I want to be patronised, I'll talk to my kids.... ;)

Ha. Well, it really was though. Not many people know anything about what to
do about halo or probably didn't know it existed before.

And "patronised" almost sounds like a good thing, similar sounding to the
word patriotic. Yeah, yeah, I'm just being annoying now.

Bob H.


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From: evbarry
Subject: Re: Converting halos (old question I know, but please read)
Date: 14 Jan 2004 02:50:02
Message: <web.4004f3fc765161c267a4524c0@news.povray.org>
Thanks guys, I will try it...


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