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From: Steven Pigeon
Subject:
Date: 10 Apr 2003 00:02:18
Message: <3e94ecca@news.povray.org>

W.I.P...

Comments ? I can't get quite the same
highlights / dark regions as a real glass.

Suggestions?

--
Steven Pigeon, Ph. D.
pig### [at] iroumontrealca

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From: Andrew Coppin
Subject:
Date: 14 Apr 2003 16:05:17
Message: <3e9b147d@news.povray.org>

How the hell did you get that carpet to look so real?

(OK, probably NOT the comments you were hoping for. LOL.)

Well, myself I think that is quite impressive already. Not sure where all
that blue comes from tho... Shaddow is probably a bit sharp for such a
blurry spotlight... but then, the glass is nearer to the floor that where
ever the light is comming from...

Andrew.

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From: Greg Edwards
Subject:
Date: 15 Apr 2003 21:14:53
Message: <buddanmyxaon.1chgehx1p57y4$.dlg@40tude.net>

On Mon, 14 Apr 2003 21:04:00 +0100, Andrew Coppin wrote:

> How the hell did you get that carpet to look so real?

It looks like an image map. Sorry to disappoint you though... :-(

-- 
light_source#macro G(E)sphere{z+E*y*5e-3.04rotate-z*E*6pigment{rgbt#end{
20*y-10#local n=162;1}#while(n)#local n=n-.3;G(n)x}}G(-n).7}}#end//GregE

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From: Steven Pigeon
Subject:
Date: 15 Apr 2003 22:23:16
Message: <3e9cbe94$1@news.povray.org>

"Greg Edwards" <edw### [at] hotmailcomremovethis> wrote in message
news:buddanmyxaon.1chgehx1p57y4$.dlg@40tude.net...
> On Mon, 14 Apr 2003 21:04:00 +0100, Andrew Coppin wrote:
>
> > How the hell did you get that carpet to look so real?
>
> It looks like an image map. Sorry to disappoint you though... :-(

Indeed. Plus wrinkles.

But I wanted to know about the glass.
I found that dispersion gives a slightly greenish
tint to it, even in area where there's no dispersion...

best,

        S
Steven Pigeon, Ph. D.
pig### [at] iroumontrealca

>
> --
> light_source#macro G(E)sphere{z+E*y*5e-3.04rotate-z*E*6pigment{rgbt#end{
> 20*y-10#local n=162;1}#while(n)#local n=n-.3;G(n)x}}G(-n).7}}#end//GregE

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From: Greg Edwards
Subject:
Date: 15 Apr 2003 22:32:41
Message: <1nzu4f435hf9x.rm9trs6q36aj$.dlg@40tude.net>

On Tue, 15 Apr 2003 22:22:38 -0400, Steven Pigeon wrote:

> "Greg Edwards" <edw### [at] hotmailcomremovethis> wrote in message
> news:buddanmyxaon.1chgehx1p57y4$.dlg@40tude.net...
>> On Mon, 14 Apr 2003 21:04:00 +0100, Andrew Coppin wrote:
>>
>>> How the hell did you get that carpet to look so real?
>>
>> It looks like an image map. Sorry to disappoint you though... :-(
> 
> Indeed. Plus wrinkles.
> 
> But I wanted to know about the glass.
> I found that dispersion gives a slightly greenish
> tint to it, even in area where there's no dispersion...
> 
> best,
> 
>         S
> Steven Pigeon, Ph. D.
> pig### [at] iroumontrealca
> 
>>
>> --
>> light_source#macro G(E)sphere{z+E*y*5e-3.04rotate-z*E*6pigment{rgbt#end{
>> 20*y-10#local n=162;1}#while(n)#local n=n-.3;G(n)x}}G(-n).7}}#end//GregE

That's because by the nature of POV's dispersion, not every wavelength is 
sampled and since only the used hues are averaged, some hue peaks 
(particularly purple (because it's split between the beginning and the end 
of the spectrum?)) don't get evaluated correctly.

-- 
light_source#macro G(E)sphere{z+E*y*5e-3.04rotate-z*E*6pigment{rgbt#end{
20*y-10#local n=162;1}#while(n)#local n=n-.3;G(n)x}}G(-n).7}}#end//GregE

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