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From: Bob Hughes
Subject: Re: Sascha/Escher Waterfall Un-Illusion [~24kb Jpg]
Date: 15 Mar 2000 03:22:17
Message: <38cf4839@news.povray.org>
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"Alan Kong" <ako### [at] povrayNO-SPAM org> wrote in message
news:q1aucs0qhjda8o3vvqfhrqftcmcdir030f@4ax.com...
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| I wonder how Sascha's scene would look as a cross-eyed stereogram?
Really neat of course. Problem is how to go about it, since it uses the
'orthographic' camera. I was about to try that anyway eventually just to see if
it could be done by shifting the clipping objects a little and using a very
zoomed in perspective camera.
Will let you know if it can be.
Bob
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From: Rick [Kitty5]
Subject: Re: Sascha/Escher Waterfall Un-Illusion [~24kb Jpg]
Date: 15 Mar 2000 06:52:26
Message: <38cf797a@news.povray.org>
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> >Okay. Interesting, isn't it? Hope this small rendering shows it okay.
> >My hard work would only be that this illusion can be rendered in one go,
rather
> >than the two it took before which was what Sascha Ledinsky had to do in
order to
> >get the illusion to work.
>
> I wonder how Sascha's scene would look as a cross-eyed stereogram?
I dont know if it would work correctly , worth a try tho (might give you
more headaches than it worth tho!)
Very good un-illusion :)
Rick
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From: Bob Hughes
Subject: Re: Sascha/Escher Waterfall Un-Illusion [~102kb Jpg]
Date: 15 Mar 2000 11:14:45
Message: <38cfb6f5@news.povray.org>
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And here it is... 3D in 3D. The only headaches might be from trying to look at
it.
I was very surprised to see the illusion didn't actually breakdown, although the
foreground building seems to have moved considerably and I set the mandelbrot
fractal background the same for both renders. All it really took to make this
stereogram was to rotate the camera (zoomed in with 'angle 0.5') a degree and
rotate the clipping objects a little too. Well, I did have to lower the camera
a bit, but I'm not exactly sure why; orthographic to perspective change of some
kind.
Cross-eyed for the left and center, diverged-eyes for the right and center.
Bob
"Rick [Kitty5]" <pov### [at] dialpipexcom> wrote in message
news:38cf797a@news.povray.org...
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| > I wonder how Sascha's scene would look as a cross-eyed stereogram?
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| I dont know if it would work correctly , worth a try tho (might give you
| more headaches than it worth tho!)
Post a reply to this message
Attachments:
Download 'waterfallillusion3D.jpg' (77 KB)
Preview of image 'waterfallillusion3D.jpg'
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On Wed, 15 Mar 2000 10:12:41 -0600 "Bob Hughes"
<omn### [at] hotmailcom?subject=PoV-News:> wrote:
>And here it is... 3D in 3D.
Cool. Thanks a bunch, Bob!
--
Alan - ako### [at] povrayorg - a k o n g <at> p o v r a y <dot> o r g
http://www.povray.org - Home of the Persistence of Vision Ray Tracer
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If you look real closely you can see the overlap.
This is really just a double-tribar, isn't it...
Everything seems to have that tribar somewhere if you look.
--
___ _______________________________________________
| \ |_ <dav### [at] faricynet> <ICQ 55354965>
|_/avid |ontaine http://www.faricy.net/~davidf/
"The only difference between me and a madman is that I'm not mad." -Dali
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From: Bob Hughes
Subject: Re: Sascha/Escher Waterfall Un-Illusion [~102kb Jpg]
Date: 16 Mar 2000 03:48:37
Message: <38d09fe5@news.povray.org>
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"Alan Kong" <ako### [at] povrayNO-SPAMorg> wrote in message
news:8r60dsgunhk84lj2cagjaqjc18qh092v2e@4ax.com...
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| >And here it is... 3D in 3D.
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| Cool. Thanks a bunch, Bob!
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| --
| Alan - ako### [at] povrayorg - a k o n g <at> p o v r a y <dot> o r g
| http://www.povray.org - Home of the Persistence of Vision Ray Tracer
You are certainly welcome.
Bob
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From: Bob Hughes
Subject: Re: Sascha/Escher Waterfall Un-Illusion [~102kb Jpg]
Date: 16 Mar 2000 03:55:17
Message: <38d0a175@news.povray.org>
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I wasn't sure so I looked it up in one of my Escher books. It's actually three
tribars. The overlap for this one wasn't accounted for as much as in the first
non-stereogram images, I just wasn't going to spend as much time on it for these
quick smaller renders. The other isn't perfect either.
Bob
"David Fontaine" <dav### [at] faricynet> wrote in message
news:38D0221E.3B4D3708@faricy.net...
| If you look real closely you can see the overlap.
| This is really just a double-tribar, isn't it...
| Everything seems to have that tribar somewhere if you look.
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| --
| ___ _______________________________________________
| | \ |_ <dav### [at] faricynet> <ICQ 55354965>
| |_/avid |ontaine http://www.faricy.net/~davidf/
|
| "The only difference between me and a madman is that I'm not mad." -Dali
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From: Rick [Kitty5]
Subject: Re: Sascha/Escher Waterfall Un-Illusion [~102kb Jpg]
Date: 16 Mar 2000 08:53:02
Message: <38d0e73e@news.povray.org>
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whoa !
that is 3d poster material, really cool
(nice 3 image sewuence - but cross eye is the only way to go)
Rick
"Bob Hughes" <omn### [at] hotmailcom?subject=PoV-News:> wrote in message
news:38cfb6f5@news.povray.org...
> And here it is... 3D in 3D. The only headaches might be from trying to
look at
> it.
> I was very surprised to see the illusion didn't actually breakdown,
although the
> foreground building seems to have moved considerably and I set the
mandelbrot
> fractal background the same for both renders. All it really took to make
this
> stereogram was to rotate the camera (zoomed in with 'angle 0.5') a degree
and
> rotate the clipping objects a little too. Well, I did have to lower the
camera
> a bit, but I'm not exactly sure why; orthographic to perspective change of
some
> kind.
>
> Cross-eyed for the left and center, diverged-eyes for the right and
center.
>
> Bob
>
> "Rick [Kitty5]" <pov### [at] dialpipexcom> wrote in message
> news:38cf797a@news.povray.org...
> |
> | > I wonder how Sascha's scene would look as a cross-eyed stereogram?
> |
> | I dont know if it would work correctly , worth a try tho (might give you
> | more headaches than it worth tho!)
>
>
>
>
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Bob Hughes wrote:
> I wasn't sure so I looked it up in one of my Escher books. It's actually three
> tribars. The overlap for this one wasn't accounted for as much as in the first
> non-stereogram images, I just wasn't going to spend as much time on it for these
> quick smaller renders. The other isn't perfect either.
I'm not talking about it being lined up. I mean I can actually see where the depth
changes.
--
___ _______________________________________________
| \ |_ <dav### [at] faricynet> <ICQ 55354965>
|_/avid |ontaine http://www.faricy.net/~davidf/
"The only difference between me and a madman is that I'm not mad." -Dali
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From: Bob Hughes
Subject: Re: Sascha/Escher Waterfall Un-Illusion [~102kb Jpg]
Date: 17 Mar 2000 06:58:44
Message: <38d21df4@news.povray.org>
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You see better than me then... but that's usually a given.
Bob
"David Fontaine" <dav### [at] faricynet> wrote in message
news:38D159DE.AAD3225E@faricy.net...
| Bob Hughes wrote:
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| > I wasn't sure so I looked it up in one of my Escher books. It's actually
three
| > tribars. The overlap for this one wasn't accounted for as much as in the
first
| > non-stereogram images, I just wasn't going to spend as much time on it for
these
| > quick smaller renders. The other isn't perfect either.
|
| I'm not talking about it being lined up. I mean I can actually see where the
depth
| changes.
|
| --
| ___ _______________________________________________
| | \ |_ <dav### [at] faricynet> <ICQ 55354965>
| |_/avid |ontaine http://www.faricy.net/~davidf/
|
| "The only difference between me and a madman is that I'm not mad." -Dali
|
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