POV-Ray: Newsgroups: povray.general: Multiplied densities

POV-Ray : Newsgroups : povray.general : Multiplied densities		Server Time 5 Nov 2024 07:17:42 EST (-0500)

From: Greg M Johnson
Subject: Multiplied densities
Date: 30 Jun 1999 13:21:58
Message: <377A51A1.C0D0983A@geocities.com>

Can someone remind me how to multiply the densities of media?  The POV
3.1a documentation is far from complete.

Preferrably, I'd like a specific example.  What I'd like to do is have
something "flaming" AND decreasing as one leaves a center point.  I'm
thinking that I could multiply a bozo and a spherical pattern.

Would I do:

Sphere{
        texture {blahblah}
        interior{
            media{
                density{}
                    }
            media{
                density{}
                    }
    etc.

OR


Sphere{
        texture {blahblah}
        interior{
            media{
                density{}
                density{}
                    }
    etc.

OR something else?

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From: Ken
Subject: Re: Multiplied densities
Date: 30 Jun 1999 13:34:00
Message: <377A54CA.922A572@pacbell.net>

"Greg M. Johnson" wrote:
> 
> Can someone remind me how to multiply the densities of media?  The POV
> 3.1a documentation is far from complete.
> 
> Preferrably, I'd like a specific example.  What I'd like to do is have
> something "flaming" AND decreasing as one leaves a center point.  I'm
> thinking that I could multiply a bozo and a spherical pattern.
> 
> Would I do:
> 
> Sphere{
>         texture {blahblah}
>         interior{
>             media{
>                 density{}
>                     }
>             media{
>                 density{}
>                     }
>     etc.
> 
> OR
> 
> Sphere{
>         texture {blahblah}
>         interior{
>             media{
>                 density{}
>                 density{}
>                     }
>     etc.
> 
> OR something else?

Take a look at:

http://www.flash.net/~djconnel/POV/flame.pov

-- 
Ken Tyler

mailto://tylereng@pacbell.net

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From: Ken
Subject: Re: Multiplied densities
Date: 30 Jun 1999 13:45:48
Message: <377A578F.D55AC507@pacbell.net>

"Greg M. Johnson" wrote:
> 
> Can someone remind me how to multiply the densities of media?  The POV
> 3.1a documentation is far from complete.
> 
> Preferrably, I'd like a specific example.  What I'd like to do is have
> something "flaming" AND decreasing as one leaves a center point.  I'm
> thinking that I could multiply a bozo and a spherical pattern.

  Also see my posted example in povray.text.scene-files for a multiple
density flame example.

-- 
Ken Tyler

mailto://tylereng@pacbell.net

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From: Peter Popov
Subject: Re: Multiplied densities
Date: 30 Jun 1999 15:53:29
Message: <377b62a6.3439859@204.213.191.228>

On Wed, 30 Jun 1999 13:19:29 -0400, "Greg M. Johnson"
<gre### [at] geocitiescom> wrote:

Multiple densities in a media statement are multiplied together
(logical AND). Multiple media in an interior statement are added
together (logical OR).

I wish there was a way to make a logical XOR (yeah, you can model it
with ANDs and ORs and inverses pretty fine, but that's slow)


Peter Popov
ICQ: 15002700

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