Do you have a line like:
global_settings { photons { count 50000 } }

There are other ways of doing it, and obviously the count value needs to be
adjusted to suit.  But you need something in the global_settings to turn
photons on.


"Dave Bates" <dab### [at] msncom> wrote in message
news:3ce4297d$1@news.povray.org...
> Thanks for the response Harold.
>
> I did see your Image, and it was amazing..
> Basically I'm trying to Understand Photons, IOR and such... I want to get
a
> light to shine through the Glass Orb I made, and Refract on the the Plane
to
> the other side..
> I have turned on photons, so I could see what those really do.. basically
> I've read and now I'm playing..
>
> Here is the orb Script:
> sphere {
>     0, 2
>     texture {
>         pigment { RedClear } //For now, will be glass later
>         finish { F_Glass5 }
>     }
>     interior { ior 1.76 }
>     translate y*1
>     photons {
>         target
>         reflection on
>         refraction on
>         collect off
>     }
> }
>
> Basic stuff really.. If you want I can mail you the "Test" photo..
> "Harold Baize" <bai### [at] itsaucsfedu> wrote in message
> news:3ce424ba$1@news.povray.org...
> > Not that I know much about these things, but I'm
> > doing something similar right now (see Old paperweights
> > in p.b.i).
> >
> > What is your sphere's radius?  The light is slightly above
> > and to the right of origin. What photon effects are you
> > expecting and where? Not sure what is or isn't
> > working. Maybe you can post most of the script so we
> > can check it out.
> >
> > Harold
> >
> > "Dave Bates" <dab### [at] msncom> wrote in message
> > news:3ce41148$1@news.povray.org...
> > > Hello everyone,
> > >      I've been working with Photons, IOR values and lights.
> > >
> > >     I have an adaptive light that is set to a location of <2, .5, 0>
> > >
> > >     I want this to look through a sphere I have sitting at Origin, but
> the
> > > light seems to point Straight down..
> > >     do I have to use parallel lights to get this to work, or spot
> lights?
> > >
> > > Thanks
> > > D
> > >
> > >
> > >
> > >
> >
> >
>
>

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