I'm a fairly new user who just can't seem to get this.  Here's the
scenario.  I've got three torii in a row (the other shapes in the image
aren't important:  I didn't use unions or differences or anything
fancy).  I want to make the torii glow blue.  I tried placing all kinds
of halos in them (glowing, attenuating, etc.).  I made sure that the
torii were hollow. (Am I supposed to remove the PIGMENT keyword from the
torii?)  Is it possible to place a halo into a torus, or am I a nitwit
and didn't read the docs correctly?  Well, thanks in advance.

Melissa Mathis
gle### [at] airmailnet

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Glenn Mathis wrote in message <35D5AB3A.DFEA3C10@airmail.net>...
>Is it possible to place a halo into a torus, or am I a nitwit
>and didn't read the docs correctly?  Well, thanks in advance.


It should be. There was an image in the IRTC once of a fusion reactor (or
something like that), which used a halo in a torus, if I am correct. It was
somewhere in the winning ranges, so it shouldn't be too hard to find:
http://www.irtc.org
Look for the "Great engineering achievements" round. If you are lucky, it
comes with sourcecode :-)

Now a wild guess:
You say, "the other objects are not important..."
Now: Is by any chance one of these objects a plane? because planes have an
"inside" too: Everything on one side of the plane is defined as being
"outside", everything on the other side is defined as being "inside". And
since a plane has an "inside" too, it too needs to be made hollow, or it
will kill every halo that is on its wrong side (the "inside"-side).

Hope it helps,
Johannes.

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Glenn Mathis wrote:
> 
> I'm a fairly new user who just can't seem to get this.  Here's the
> scenario.  I've got three torii in a row (the other shapes in the image

The magic number here is 3....

When light passes through at least 5 surfaces, by default
transparency becomes disabled.  Make sure

global_settings { max_trace_level 12 }

(or whatever -- something at least as big as the maximum
number of transparent surfaces you will have along a line
of site)

Dan
-- 
http://www.flash.net/~djconnel/

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What type of halo are you using? My best advise is to create the object
aroudn the origin, make sure that the transmit and/or filter values in the
pigment are high, make sure it's hollow, and then translate the final shape
to the desireed location.

Also, make sure you're rending at +q8.

Josh English
eng### [at] spiritonecom
www.spiritone.com/~english


Glenn Mathis wrote:

> I'm a fairly new user who just can't seem to get this.  Here's the
> scenario.  I've got three torii in a row (the other shapes in the image
> aren't important:  I didn't use unions or differences or anything
> fancy).  I want to make the torii glow blue.  I tried placing all kinds
> of halos in them (glowing, attenuating, etc.).  I made sure that the
> torii were hollow. (Am I supposed to remove the PIGMENT keyword from the
> torii?)  Is it possible to place a halo into a torus, or am I a nitwit
> and didn't read the docs correctly?  Well, thanks in advance.
>
> Melissa Mathis
> gle### [at] airmailnet

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