Okay now...

Foreforeword: you may put this :o) wherever you'll feel it's needed to keep
your sanity. Don't know if it's going to be of much use though.

Foreword:
            Don't worry, the attachment isn't a scene file, just an example.
It is less messy that way than if I paste it in the body of this message.

            Now the interesting stuff.

            If you render  this (let's say 640X480 AA or not) you will see a
red hexagon, points up, surrounded by 6 blue ones, drawn a bit too close to
the red one (notice the R = .95 in polygon.pov). This is to ensure that
there is no chance that any black pixel is going to be put at the seam
between the blue and the red colors.

            Here's the part where you must be wearing thick glasses for the
nearsighted. Mine are of dioptre 6 force. Those glasses that are thinned on
the edges might not work, I don't know. Turn you're head on one side while
keeping your eyes on the red hexagon. If I am *not* going crazy, you should
see the red hexagon drift toward the same side that you're turning your head
*and* a black border form around that hexagon on the sides opposite to that
drift direction. This works on either sides or if you nodding to see the
image at the limit of you lenses.

            Now, I was expecting that since its a simple prismatic effect
that makes objects of different colors to appear at other relative places
than they really are. What is puzzling me is that black border made of
nothing ! I am not looking at a black color : I am looking at *nothingness*
!!!! Is this a rip in the space-time continuum ? Have I been swallowed
already ? Are *you* reading this or are those you, other you(s), on the
other side of the mirror (in which case Moray's coordinates would be the
right way ? Not bad !(Hi Lutz!)). Help me! Help me!!

            Neaj

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Attachments:
Download 'polygon1.pov.txt' (1 KB)

On Mon, 10 May 1999 09:29:45 -0400, Jean Montambeault wrote:
>            Now, I was expecting that since its a simple prismatic effect
>that makes objects of different colors to appear at other relative places
>than they really are. What is puzzling me is that black border made of
>nothing ! I am not looking at a black color : I am looking at *nothingness*
>!!!! Is this a rip in the space-time continuum ? 

Diopter -6.75 here, though at the moment I'm wearing contact lenses at 
-6.50 so I can't see the effect.  The black you're seeing is the non-blue
components of the blue hexagon, overlapping the non-red components of the
red hexagon.  If your hexagons were yellow and cyan you might actually
see green in the middle (I think... as I said, I can't see the effect
anymore since I've started wearing contact lenses.)  The effect is 
even more pronounced if you wear polycarbonate or other high-IOR lenses.

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Now Ron,

            or isn't it noR ? That is expected that *you* would say that !

            Seriously, has it ever been put to use in some way ?

            Just imagine that we could make everybody wear a third and
fourth eye instead of us contact lenses %=}.

                Jean.

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It wasn't easy for me to see but the effect was there. And I also noticed
it follows any direction your glasses are facing while keeping your eyes
trained on the red hexagon. The "nothing" line goes to whichever side you 
are directing your face.
I tired to see if the unaided eye alone causes this but saw no noticeable
effect.
Your reasoning for more eyes escapes me 8)


Jean Montambeault wrote:
> 
>         Now Ron,
> 
>             or isn't it noR ? That is expected that *you* would say that !
> 
>             Seriously, has it ever been put to use in some way ?
> 
>             Just imagine that we could make everybody wear a third and
> fourth eye instead of us contact lenses %=}.
> 
>                 Jean.

-- 
 omniVERSE: beyond the universe
  http://members.aol.com/inversez/homepage.htm
 mailto://inversez@aol.com?Subject=PoV-News

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>It wasn't easy for me to see but the effect was there. And I also noticed
>it follows any direction your glasses are facing while keeping your eyes
>trained on the red hexagon. The "nothing" line goes to whichever side you
>are directing your face.
>I tired to see if the unaided eye alone causes this but saw no noticeable
>effect.
>Your reasoning for more eyes escapes me 8)


        Sorry,

            that's a bad joke from a French guy who just can't get the
meaning of certain American expressions like "four-eyes" as an insult to
somebody who wears glasses. I just can't get what's insulting in it or where
are the third an fourth eye in all that anyway. But I found the idea of
inventing something so cool that people with 20/20 vision would cripple
their senses and good looks to be able to see it somewhat poetic.

                    Jean

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Jean Montambeault wrote in message <373741d2.0@news.povray.org>...
>

<snip>
>>Your reasoning for more eyes escapes me 8)
>
>
>        Sorry,
>
>            that's a bad joke from a French guy who just can't get the
>meaning of certain American expressions like "four-eyes" as an insult to
>somebody who wears glasses. I just can't get what's insulting in it or
where
>are the third an fourth eye in all that anyway. But I found the idea of

I think the "four-eyes" expression comes from calling the two lenses in the
person's glasses "eyes".  So they have their own two eyes, then another two
"eyes" (the glasses) - so giving the apparently insulting name of
"four-eyes" :)

That's probably why some people (including myself) were a little confused
about the "three eyes" suggestion ;) I don't know whether the expression
orginated in America, elsewhere or just made up independantly.... either
way, I think it's a fairly common insult in UK primary-schools ;)

It's not surprising people who have not grown up in an English-language
speaking area don't understand all the jokes/insults - I have yet to find a
book that does this for any language!

Erk... a bit off-topic here - sorry.


Matt

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Didn't work for me, my vision is 6/60 with glasses, maybe it
doesn't work with bifocals.

Jean Montambeault wrote:
> 
>         Okay now...
> 
> Foreforeword: you may put this :o) wherever you'll feel it's needed to keep
> your sanity. Don't know if it's going to be of much use though.
> 
> Foreword:
>             Don't worry, the attachment isn't a scene file, just an example.
> It is less messy that way than if I paste it in the body of this message.
> 
>             Now the interesting stuff.
> 
>             If you render  this (let's say 640X480 AA or not) you will see a
> red hexagon, points up, surrounded by 6 blue ones, drawn a bit too close to
> the red one (notice the R = .95 in polygon.pov). This is to ensure that
> there is no chance that any black pixel is going to be put at the seam
> between the blue and the red colors.
> 
>             Here's the part where you must be wearing thick glasses for the
> nearsighted. Mine are of dioptre 6 force. Those glasses that are thinned on
> the edges might not work, I don't know. Turn you're head on one side while
> keeping your eyes on the red hexagon. If I am *not* going crazy, you should
> see the red hexagon drift toward the same side that you're turning your head
> *and* a black border form around that hexagon on the sides opposite to that
> drift direction. This works on either sides or if you nodding to see the
> image at the limit of you lenses.
> 
>             Now, I was expecting that since its a simple prismatic effect
> that makes objects of different colors to appear at other relative places
> than they really are. What is puzzling me is that black border made of
> nothing ! I am not looking at a black color : I am looking at *nothingness*
> !!!! Is this a rip in the space-time continuum ? Have I been swallowed
> already ? Are *you* reading this or are those you, other you(s), on the
> other side of the mirror (in which case Moray's coordinates would be the
> right way ? Not bad !(Hi Lutz!)). Help me! Help me!!
> 
>             Neaj
> 
>                    Name: polygon1.pov
>    polygon1.pov    Type: POV-Ray scene file
(application/x-unknown-content-type-POV-Ray.Scene)
>                Encoding: x-uuencode

-- 
Cheers
Steve

------------------------------------------------------------------------------------------------
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