I'll try, but I'm thinking it all has to do either
with the incoming ray being in such a strange
angle to the glass, that its just bouncing around
in the glass.
Ohterwise, it could also be related to the
smooth-triangles/mesh bug which cannot
be fixed in Povray 3.5 (the bug which also
affects heightfields and their correct tracing).

I'll see what I can do, but it doesn't look to bad actually.

TinCanMan wrote:

> > Yeah, some AA would definetely look good.
> > Ther are no coincident surfaces, inside the vase,
> > the rays is refracted and reflected so often, that
> > even a setting of 256 max_trace_level doesn't
> > help, because the ray probably just travels long
> > enough inside the vase to get darkened by fade_power...
> > But it isn't so obvious with some focal blur, looks more
> > like some curious refraction.
> Try lower adc_bailout (if you haven't already)
>
> -tgq

--
Tim Nikias
Homepage: http://www.digitaltwilight.de/no_lights/index.html
Email: Tim### [at] gmxde

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If you want to mail the vase to me within the next three hours, I can take a
look this evening and see if I can spot the problem.

 -Shay

Tim Nikias <tim### [at] gmxde> wrote in message
news:3CC85619.15FEFEB2@gmx.de...

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I was running through my code and trying to prepare a
vase for you to look at. But, you'd be overloaded with
the "unknown". Tons of Macros of which I haven't
yet written good comments and descriptions, declarations
all around the place, though not in random order,
hard to describe.

I'll send a version without all but the vase, and
all the required includes I've written, but if you cannot
find through the mess, I won't complain. ;-)

In any case, thanks for your offer!

Shay wrote:

> If you want to mail the vase to me within the next three hours, I can take a
> look this evening and see if I can spot the problem.
>
>  -Shay
>

--
Tim Nikias
Homepage: http://www.digitaltwilight.de/no_lights/index.html
Email: Tim### [at] gmxde

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Tim Nikias <tim### [at] gmxde> wrote in message
news:3CC8596C.6C6145F5@gmx.de...
>
> I'll send a version without all but the vase, and
> all the required includes I've written, but if you cannot
> find through the mess, I won't complain. ;-)
>

Awesome. If you don't make the mail to me by 5:00 US Central standard time
(2:47 here now), I will email you my home email addy. I will look and see if
I can't find what's causing the appearance of a sharp edge along the top as
well.

 -Shay

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I've taken care of the sharp edge (two meshes,
the inside and outside: inside based on outside,
that sharp edge was due to the same coords
for that area), so a new connection was made
using my cubic-bezier-splines-algorithm for
every two coords...
Like I said, mesh-modelling-macros...

And just sent it on its way.

Shay wrote:

> Awesome. If you don't make the mail to me by 5:00 US Central standard time
> (2:47 here now), I will email you my home email addy. I will look and see if
> I can't find what's causing the appearance of a sharp edge along the top as
> well.
>
>  -Shay

--
Tim Nikias
Homepage: http://www.digitaltwilight.de/no_lights/index.html
Email: Tim### [at] gmxde

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"Tim Nikias" <tim### [at] gmxde> wrote in message
news:3CC85619.15FEFEB2@gmx.de...
> I'll try, but I'm thinking it all has to do either
> with the incoming ray being in such a strange
> angle to the glass, that its just bouncing around
> in the glass.

Probably, AA would probably help this as well.

-tgq

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You have some cool macros. The black spots are just what was expected, not
enough max_trace_level. Just a torus primitive placed into the scene still
had black dots at max_trace_level 40. I carefully examined a wireframe of
your meshes and found no twisting or overlapping which might cause inverted
normals or other problems.

The mesh did have some odd properties which might cause a some problems. The
inside intersected with the outside and the mesh was not closed. I fit the
inside into the outside and closed the mesh and the pinholes on the bottom
and combined the whole thing into one mesh2 statement. I can post it if you
would like, but I'm not sure if you would notice the difference in your
scene.

 -Shay


Tim Nikias <tim### [at] gmxde> wrote in message
news:3CC85E72.FAB68679@gmx.de...

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The black spots could be removed by cheating your glass and lowering the ior
to 1.

 -Shay

Shay <sah### [at] simcopartscom> wrote in message news:3cc96fba@news.povray.org...

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Ah, well, then it wouldn't look like real glass anymore, would it?

I am thankful for your experiments, but rather than having you send me
your mesh2 object, I'd like to know what exactly the problems are
with the mesh.
I think I can overcome the not-closed problem with some vector-
copy-pasting, shouldn't be too hard to implement into the macros. Would
be an enhancement, I guess then the macros would be doing the job
they are supposed to (merging meshes, attaching new ones etc).

The pinholes can probably be overcome with another macro not
included into the version I gave you, which I use for creating the surface
of the water: it takes one line of the mesh and connects all those to
a single point. Making either the pinholes larger and using that, or just
keeping the small pinholes, would probably do the job.
Where did the inside intersect with the outside? I did some trials,
and found no intersection (though I may not have looked closely enough),
but that could be the possibility on the bottom, the algorithm used
there doesn't fit the exact needs of being not-intersecting there...

Shay wrote:

> The black spots could be removed by cheating your glass and lowering the ior
> to 1.
>
>  -Shay
>
> Shay <sah### [at] simcopartscom> wrote in message news:3cc96fba@news.povray.org...

--
Tim Nikias
Homepage: http://www.digitaltwilight.de/no_lights/index.html
Email: Tim### [at] gmxde

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Thank you very much.

DZ wrote:

> Holy cats-- that's beauteous. Rocks the Casbah. Great job.
>

--
Tim Nikias
Homepage: http://www.digitaltwilight.de/no_lights/index.html
Email: Tim### [at] gmxde

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