[Radiance-general] Modeling a cloud

[Germán Molina Larrain]

Those clouds are awesome!!

Not sure if useful for you (probably not)... But, why not using HDR probes
of real skies? And maybe, with your models, find a way of creating and/or
writing artificial probes?

Bye!
El feb 23, 2015 4:47 PM, "Greg Ward" <gregoryjward at gmail.com> escribió:

> Thanks for sharing, Mark.  I'm always delighted to see someone figure out
> how to do something with Radiance that I have no idea how to do, myself!
>
> Cheers,
> -Greg
>
> > From: Mark Stock <mstock at umich.edu>
> > Subject: Re: [Radiance-general] Modeling a cloud
> > Date: February 23, 2015 11:36:28 AM PST
> >
> > Eduardo,
> >
> > I have done some experimentation with clouds in Radiance, and there
> > are two ways that seem to work.
> >
> > One is to define a closed cloud volume and apply the "mist" material
> > to it. This mesh must be closed, watertight, and non-intersecting, and
> > will appear to be of constant "cloud" density. It helps considerably
> > if it's in the shape of a cloud. It can look something like this:
> > http://markjstock.org/graphics/ray/clouds04.jpg
> >
> > The other method allows varying density throughout the cloud, but is a
> > lot more work. It consists of creating a large number of small,
> > non-overlapping cubes (a dense matrix of cubes with small spaces
> > between them), each with a different mist material applied to them.
> > http://markjstock.org/transfer/img2_00.jpg
> > http://markjstock.org/transfer/img3_01.jpg
> >
> > These options seemed to create the most cloud-like volumes (with
> > clouds of size 1 and mist "voxels" of size ~0.01):
> > -ma 0.95 0.95 0.95 -mg 0.05 -ms 0.001
> >
> > Mark
> >
> >
> > On 2/22/15, Eduardo Artigas <eduardoartigas at yahoo.es> wrote:
> >> Hi guys!
> >> I am a student  of a course about Radiance so I am quite new with the
> >> software. I looking for information an existing model of a cloud so I
> would
> >> like to analyses it and maybe i will try to improve it or to develop
> >> something similar.
> >> I hope that someone could help me!
> >> Best Regards
> >> Eduardo Artigas
>
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