On Thu, 10 Aug 2000 15:55:29 -0700, Peter Warren wrote:
>It's a pretty big project and the camera angle I'm aiming for is
>from the inside with the light coming thru the 'hole at the top'
>(sorry for my arch.tech. talk).

Your message prompted me to go and have a good look around the net
for a photo of the inside of the Metropolitan Cathedral of Liverpool
which has a stained glass circular tower, the glass goes through all
colours of the rainbow gradually so as the sun moves around the 
colour of the light inside changes, it's a beautiful sight to behold.  

Alass I couldn't find any images, but I'll keep my eyes opn and if
I find one (taken on the inside) I'll post it here.

-- 
Cheers
Steve              email mailto:ste### [at] zeroppsuklinuxnet

%HAV-A-NICEDAY Error not enough coffee  0 pps. 

web http://www.zeropps.uklinux.net/

or  http://start.at/zero-pps

 12:47am  up 27 days, 23:14,  2 users,  load average: 1.65, 1.28, 1.11

Post a reply to this message

Steve wrote in message ...
>Your message prompted me to go and have a good look around the net
>for a photo of the inside of the Metropolitan Cathedral of Liverpool
>which has a stained glass circular tower, the glass goes through all
>colours of the rainbow gradually so as the sun moves around the
>colour of the light inside changes, it's a beautiful sight to behold.

Wow, sounds very beautiful and tre cool.  Certainly not the
'typical' American image of what is 'Liverpudlian'.

>Alass I couldn't find any images, but I'll keep my eyes opn and if
>I find one (taken on the inside) I'll post it here.


It might be necessary to get in contact with the Liverpool 'chamber
of commerce', but maybe they aren't very 'wired' as yet.

Here's a 1750 painting by some Italian dude of what I'm going for.

I've got the coffers (arch.tech.talk) down, but have found getting
the angle extremely difficult. Maybe it's the magic/lie of painting.

Peter
Proud user of PovRay since 1996

Post a reply to this message

Attachments:
Download '_panPannini1750.jpg' (52 KB)

Preview of image '_panPannini1750.jpg'

On Fri, 11 Aug 2000 23:04:39 -0700, Peter Warren wrote:
>
>Here's a 1750 painting by some Italian dude of what I'm going for.
>
>I've got the coffers (arch.tech.talk) down, but have found getting
>the angle extremely difficult. Maybe it's the magic/lie of painting.
>

It's going to be very difficult getting your lighting right here, you'll
probably have to use either a lot of ambient (don't do it), or a lot of
area lights, though point lights and fade_povew (or whatever it is), 
could possibly be the solution.  

-- 
Cheers
Steve              email mailto:ste### [at] zeroppsuklinuxnet

%HAV-A-NICEDAY Error not enough coffee  0 pps. 

web http://www.zeropps.uklinux.net/

or  http://start.at/zero-pps

 10:37am  up 28 days,  9:04,  2 users,  load average: 1.00, 1.00, 1.00

Post a reply to this message

Peter Warren wrote:
> Here's a 1750 painting by some Italian dude of what I'm going for.
> I've got the coffers (arch.tech.talk) down, ...

Someday, if I ever learn the necessary math, I'd like to design a
coffer-dome based on a tessellation of the hyperbolic plane.

At
http://www.superliminal.com/geometry/hypertes/HyperbolicTesselations.html,

Some of these consist of straight lines running throughout.  Project one
of these stereographically to the hemisphere, and you get a set of
arches that meet the plane at a right angle.

Unfortunately, my favorite pattern -- that shown by the blue lines in
http://www.superliminal.com/geometry/hypertes/4_5_trunc0_512x512.gif --
leaves a much bigger hole than the Pantheon analogy allows.

-- 
Anton Sherwood  --  br0### [at] p0b0xcom  --  http://ogre.nu/

Post a reply to this message

Steve wrote:
> 
> It's going to be very difficult getting your lighting right here, you'll
> probably have to use either a lot of ambient (don't do it), or a lot of
> area lights, though point lights and fade_povew (or whatever it is),
> could possibly be the solution.
> 
	Radiosity is the key


-- 

* Doctor Jekyll had something * mailto:ber### [at] inamecom
* to Hyde...                  * http://www.enst.fr/~jberger
*******************************

Post a reply to this message

Anton Sherwood wrote in message <3995F71F.FA1A4170@pobox.com>...

>http://www.superliminal.com/geometry/hypertes/HyperbolicTesselations.html,
>http://www.superliminal.com/geometry/hypertes/4_5_trunc0_512x512.gif --

Very cool stuff.

Similar to Circle Packing done in PostScript.
(Unfortunately the Professor who did this work is no longer on
 line, last I checked.)

Peter Warren
Away in search of the perfect toothpick.

Post a reply to this message

Attachments:
Download 'Cirpac.gif' (11 KB)

Preview of image 'Cirpac.gif'

Peter Warren wrote (2000 Aug 14):
> Similar to Circle Packing done in PostScript.
> (Unfortunately the Professor who did this work is no longer on
>  line, last I checked.)
>  [Image]

Found it!
http://www.pmms.cam.ac.uk/~gjm11/cpacking/info.html
http://www.pmms.cam.ac.uk/~gjm11/cpacking/riemann2.ps.gz


-- 
Anton Sherwood  --  http://www.ogre.nu/

Post a reply to this message