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Take a look at the following image:
http://homepage.mac.com/oxonian/peapodCurve.png
......the problem is with the outer layer of the structure (the green
nanotube), which is material{M_NB_Winebottle_Glass}. The pixel level
sparkly dots spoil the glassy look. What I'd like is a look more like the
ruby glass in this:
http://homepage.mac.com/oxonian/N@C60.png
....of course I've tried changing to the ruby glass, and indeed changing all
the settings in the material, but it seems it's not the glass color or
basic properties that are to blame, but rather the complexity of the image
behind. I can't seem to fix it except by going for an ior near to 1.0 - at
which point it ain't glass no more!
I can just give up on the idea of having the outer tube as glass, and
instead go for a dark metal, but I thought I'd post to see if anyone has a
solution.
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From: Vincent LE CHEVALIER
Subject: Re: Some trouble with glass (too sparkly).
Date: 8 Nov 2004 16:32:56
Message: <418fe608$1@news.povray.org>
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oxonian wrote:
> Take a look at the following image:
>
> http://homepage.mac.com/oxonian/peapodCurve.png
>
> ......the problem is with the outer layer of the structure (the green
> nanotube), which is material{M_NB_Winebottle_Glass}. The pixel level
> sparkly dots spoil the glassy look. What I'd like is a look more like the
> ruby glass in this:
>
> http://homepage.mac.com/oxonian/N@C60.png
>
> ....of course I've tried changing to the ruby glass, and indeed changing all
> the settings in the material, but it seems it's not the glass color or
> basic properties that are to blame, but rather the complexity of the image
> behind. I can't seem to fix it except by going for an ior near to 1.0 - at
> which point it ain't glass no more!
>
> I can just give up on the idea of having the outer tube as glass, and
> instead go for a dark metal, but I thought I'd post to see if anyone has a
> solution.
>
>
Are you using antialiasing in the first image ? If not, that might be a
solution to get rid of the sparks.
Hope this helps
--
Vincent
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oxonian nous apporta ses lumieres ainsi en ce 2004-11-08 15:56... :
>Take a look at the following image:
>
>http://homepage.mac.com/oxonian/peapodCurve.png
>
>......the problem is with the outer layer of the structure (the green
>nanotube), which is material{M_NB_Winebottle_Glass}. The pixel level
>sparkly dots spoil the glassy look. What I'd like is a look more like the
>ruby glass in this:
>
>http://homepage.mac.com/oxonian/N@C60.png
>
>....of course I've tried changing to the ruby glass, and indeed changing all
>the settings in the material, but it seems it's not the glass color or
>basic properties that are to blame, but rather the complexity of the image
>behind. I can't seem to fix it except by going for an ior near to 1.0 - at
>which point it ain't glass no more!
>
>I can just give up on the idea of having the outer tube as glass, and
>instead go for a dark metal, but I thought I'd post to see if anyone has a
>solution.
>
>
>
>
You may need a larger max_trace_level and/or increase adc_bailout.
Changing the fade_distance to a lower value may also help, but overdoing
it can make your glass opaque.
Alain
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Are you using antialiasing? Which version of POV-Ray are you using?
The current version of POV-Ray has a small problem with antialiasing.
Try rendering with POV-Ray 3.5 (with antialiasing, of course) to see
what happens.
--
plane{-x+y,-1pigment{bozo color_map{[0rgb x][1rgb x+y]}turbulence 1}}
sphere{0,2pigment{rgbt 1}interior{media{emission 1density{spherical
density_map{[0rgb 0][.5rgb<1,.5>][1rgb 1]}turbulence.9}}}scale
<1,1,3>hollow}text{ttf"timrom""Warp".1,0translate<-1,-.1,2>}// - Warp -
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"Alain" <aze### [at] qwerty gov> wrote in message
news:418ff652@news.povray.org...
> oxonian nous apporta ses lumieres ainsi en ce 2004-11-08 15:56... :
>
> >Take a look at the following image:
> >
> >http://homepage.mac.com/oxonian/peapodCurve.png
> >
> >......the problem is with the outer layer of the structure (the green
> >nanotube), which is material{M_NB_Winebottle_Glass}. The pixel level
> >sparkly dots spoil the glassy look. What I'd like is a look more like the
> >ruby glass in this:
> >
> >http://homepage.mac.com/oxonian/N@C60.png
> >
> >....of course I've tried changing to the ruby glass, and indeed changing
all
> >the settings in the material, but it seems it's not the glass color or
> >basic properties that are to blame, but rather the complexity of the
image
> >behind. I can't seem to fix it except by going for an ior near to 1.0 -
at
> >which point it ain't glass no more!
> >
> >I can just give up on the idea of having the outer tube as glass, and
> >instead go for a dark metal, but I thought I'd post to see if anyone has
a
> >solution.
> >
> >
> >
> >
> You may need a larger max_trace_level and/or increase adc_bailout.
> Changing the fade_distance to a lower value may also help, but overdoing
> it can make your glass opaque.
>
> Alain
he could in fact make the glass opaque. It will still look hard and shiney
and maybe that is enough.
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From: Mike Thorn
Subject: Re: Some trouble with glass (too sparkly).
Date: 9 Nov 2004 19:28:58
Message: <419160ca@news.povray.org>
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Ross wrote:
>>You may need a larger max_trace_level and/or increase adc_bailout.
>>Changing the fade_distance to a lower value may also help, but overdoing
>>it can make your glass opaque.
>>
>>Alain
>
>
> he could in fact make the glass opaque. It will still look hard and shiney
> and maybe that is enough.
I'm wondering if in fact they aren't sparkly bits, but the gold texture
on the inside structure reflecting through. I'd bet that if you change
the sphere in the middle of the N@C60 image, the dots in the ruby glass
would change color.
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Just another question relating to Your images.
Are You dealing with chemistry or are You just using Buckminster Fullerenens
for fun ?
Shu
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I think this structure es very stable. Does it exist?
Regards,
Oleguer
news:web.41939d162937b0ac6b3522e90@news.povray.org...
> Just another question relating to Your images.
> Are You dealing with chemistry or are You just using Buckminster
Fullerenens
> for fun ?
>
> Shu
>
>
>
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"Shurakai" <nomail@nomail> wrote:
> Just another question relating to Your images.
> Are You dealing with chemistry or are You just using Buckminster Fullerenens
> for fun ?
>
> Shu
Oxonian is my buddy. Yes, we work with these materials and they are very
stable. they also make for pretty pictures :)
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Yes, is very pretty. Thanks for the rinsing.
Regards,
Oleguer
news:web.419cc10e2937b0ac5a5e05860@news.povray.org...
> "Shurakai" <nomail@nomail> wrote:
> > Just another question relating to Your images.
> > Are You dealing with chemistry or are You just using Buckminster
Fullerenens
> > for fun ?
> >
> > Shu
>
> Oxonian is my buddy. Yes, we work with these materials and they are very
> stable. they also make for pretty pictures :)
>
>
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