Ever since I found out about Nathan Kopp's build of pov-ray I have been
wanting to try out the photon mapping feature. I just downloaded it this

morning and played around with it a bit. First image I rendered on it
was, of course, a glass sphere. However I wanted to see how photon
mapping would work out in a more complex, real, image. So I tried to
think of any thick glass objects I had around the house which would look

nice in a scene. That's when I thought of a small glass ornament I had
received as a gift from someone, long ago. So here is the image. The
photon mapping did not produce the result I had thought it would, this
is probably to do with the fact that the image is quite bright, and
mostly because I'm new to it and this is my first real try at it.
However if you look closely you can see the caustics, at the base of the

ornament on the window ledge. Oh and before I get hundreds of posts
about the ornament:

1.It is a glass ornament of a seal, rendered in Rhino.

2. Yes this is how it looks in real life, it is not the result of bad
modeling.

If you want a more detailed description of how I created the image you
can find it on my web page in Gallery 6.

http://www.geocities.com/~thomaslake/

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Attachments:
Download 'window_sill.jpg' (66 KB)

Preview of image 'window_sill.jpg'

Very delicate image, and I appreciate very much the writing
on the aluminium joint, that's detail !!

Fabien.

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Very nice! :)

GrimDude
vos### [at] arkansasnet

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Well, the seal looks like it shouldn't be able to stand upright, but if you
say so...
The subtle caustics really do add a lot of realism. If you'd like some
nitpicking, the texture of the windowsill could use some work. It looks too
smooth and perfect. In such a close-up shot it should have a bit more
detail. /End nitpicking/
The overall level of detail is really pleasing, though.

Margus

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Margus Ramst wrote:

> Well, the seal looks like it shouldn't be able to stand upright, but if you
> say so...
> The subtle caustics really do add a lot of realism. If you'd like some
> nitpicking, the texture of the windowsill could use some work. It looks too
> smooth and perfect. In such a close-up shot it should have a bit more
> detail. /End nitpicking/

Actually I purposely tried to prevent this from happening. I used a wood normal
on the texture to make it look less smooth and more realistic. I was worried
the normal might be too prominent though, so I made the bump depth very low,
guess I made the normal a little too subtle.

>
> The overall level of detail is really pleasing, though.

Thanks.

>
>
> Margus

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This is so good as an image.. not too many objects, a simple but good layout...
yes..
perhaps a window-pane of marble or granite? just so it doesn't look to alike the
window-frames..

Thomas Lake wrote:
> 
> Ever since I found out about Nathan Kopp's build of pov-ray I have been
> wanting to try out the photon mapping feature. I just downloaded it this
> 
> morning and played around with it a bit. First image I rendered on it
> was, of course, a glass sphere. However I wanted to see how photon
> mapping would work out in a more complex, real, image. So I tried to
> think of any thick glass objects I had around the house which would look
> 
> nice in a scene. That's when I thought of a small glass ornament I had
> received as a gift from someone, long ago. So here is the image. The
> photon mapping did not produce the result I had thought it would, this
> is probably to do with the fact that the image is quite bright, and
> mostly because I'm new to it and this is my first real try at it.
> However if you look closely you can see the caustics, at the base of the
> 
> ornament on the window ledge. Oh and before I get hundreds of posts
> about the ornament:
> 
> 1.It is a glass ornament of a seal, rendered in Rhino.
> 
> 2. Yes this is how it looks in real life, it is not the result of bad
> modeling.
> 
> If you want a more detailed description of how I created the image you
> can find it on my web page in Gallery 6.
> 
> http://www.geocities.com/~thomaslake/
> 
>   --------------------------------------------------------------------------------
>  [Image]

-- 
//Spider
        [ spi### [at] bahnhofse ]-[ http://www.bahnhof.se/~spider/ ]
What I can do and what I could do, I just don't know anymore
                "Marian"
        By: "Sisters Of Mercy"

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Spider wrote:

> This is so good as an image.. not too many objects, a simple but good layout...
> yes..

Thanks!!

> perhaps a window-pane of marble or granite? just so it doesn't look to alike the
> window-frames..

Not quite sure what you mean by "a window-pane of marble or granite"? I tried
rendering
the scene with a window pane with a very small amount of reflection, about 0.1-0.2%
but
when I added this it sent the render time through the roof. If you mean the window
ledge, yes I know it is very similar to the window sill in colour but that is how they
look in my house. Perhaps I'll change the wood texture and make it a bit darker and
make
the window sill a bit lighter.

>
>
> Thomas Lake wrote:
> >
> > Ever since I found out about Nathan Kopp's build of pov-ray I have been
> > wanting to try out the photon mapping feature. I just downloaded it this
> >
> > morning and played around with it a bit. First image I rendered on it
> > was, of course, a glass sphere. However I wanted to see how photon
> > mapping would work out in a more complex, real, image. So I tried to
> > think of any thick glass objects I had around the house which would look
> >
> > nice in a scene. That's when I thought of a small glass ornament I had
> > received as a gift from someone, long ago. So here is the image. The
> > photon mapping did not produce the result I had thought it would, this
> > is probably to do with the fact that the image is quite bright, and
> > mostly because I'm new to it and this is my first real try at it.
> > However if you look closely you can see the caustics, at the base of the
> >
> > ornament on the window ledge. Oh and before I get hundreds of posts
> > about the ornament:
> >
> > 1.It is a glass ornament of a seal, rendered in Rhino.
> >
> > 2. Yes this is how it looks in real life, it is not the result of bad
> > modeling.
> >
> > If you want a more detailed description of how I created the image you
> > can find it on my web page in Gallery 6.
> >
> > http://www.geocities.com/~thomaslake/
> >
> >   --------------------------------------------------------------------------------
> >  [Image]
>
> --
> //Spider
>         [ spi### [at] bahnhofse ]-[ http://www.bahnhof.se/~spider/ ]
> What I can do and what I could do, I just don't know anymore
>                 "Marian"
>         By: "Sisters Of Mercy"

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Sorry, it's my bad english showing up again. 
**shuts up and finds a book to read**

-- 
//Spider
        [ spi### [at] bahnhofse ]-[ http://www.bahnhof.se/~spider/ ]
What I can do and what I could do, I just don't know anymore
                "Marian"
        By: "Sisters Of Mercy"

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