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Hello,
This is something that may end up being a cgsphere entry sometime in
the future, if I figure out some texturing and lighting I like. Any
comments and feedback is welcome (I'm aware that the dodecahedron is
protruding from the bottom of its hemisphere.... now.)
As it is now, its been an interesting refresher lesson for me on
platonic solids, and the limitations of antialiasing.
If anyone has any ideas for a faster way to get those gridlines to
render properly as well, I'm all ears (eyes?). This render took nearly
50 hours largely because of the focal blur settings needed to eliminate
the gridline artifacts.
--
// The Mildly Infamous Blue Herring
#version 3.61;#include"functions.inc"global_settings{assumed_gamma
2.2}isosurface{function{-f_strophoid(x/2-.45,y,z*3,1,1.2,1,1.5)-.05}
contained_by{box{<-2.1,-1,-1/3>,<1.4,1,1/3>}}max_gradient 12inverse
hollow pigment{rgbf 1}interior{media{samples 8 emission<3,80,150>/255
density{crackle metric 1color_map{[0rgb 6][.03rgb 0][1rgb 0]}scale<1,
2,1>warp{turbulence<.5,.75,.5>}scale 1/3}}}translate z*3}
Post a reply to this message
Attachments:
Download 'kepler_cgsphere.png' (213 KB)
Preview of image 'kepler_cgsphere.png'
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Blue Herring <pov### [at] bherring cotsenet> wrote:
[snip]
Nice! Looks interesting even without textures.
> If anyone has any ideas for a faster way to get those gridlines to
> render properly as well, I'm all ears (eyes?). This render took nearly
> 50 hours largely because of the focal blur settings needed to eliminate
> the gridline artifacts.
Render at 1600x1600 and downscale in gimp or your photo editor of choice? It's
worked for me in the past. You won't need such high aa settings for the rest of
the scene either in that case.
Bill
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Blue Herring nous illumina en ce 2008-09-22 08:54 -->
> Hello,
> This is something that may end up being a cgsphere entry sometime in
> the future, if I figure out some texturing and lighting I like. Any
> comments and feedback is welcome (I'm aware that the dodecahedron is
> protruding from the bottom of its hemisphere.... now.)
>
> As it is now, its been an interesting refresher lesson for me on
> platonic solids, and the limitations of antialiasing.
>
> If anyone has any ideas for a faster way to get those gridlines to
> render properly as well, I'm all ears (eyes?). This render took nearly
> 50 hours largely because of the focal blur settings needed to eliminate
> the gridline artifacts.
>
>
> ------------------------------------------------------------------------
>
You can slightly broaden the lines and make ther edges a little fuzzy.
--
Alain
-------------------------------------------------
WARNING: The consumption of alcohol is a major factor in dancing like a retard.
Post a reply to this message
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Bill Pragnell wrote:
> Nice! Looks interesting even without textures.
>
> Render at 1600x1600 and downscale in gimp or your photo editor of choice? It's
> worked for me in the past. You won't need such high aa settings for the rest of
> the scene either in that case.
Thanks! That's a good idea. I think you or someone suggested that to
me once before for some other scene, but I completely forgot.
--
// The Mildly Infamous Blue Herring
#version 3.61;#include"functions.inc"global_settings{assumed_gamma
2.2}isosurface{function{-f_strophoid(x/2-.45,y,z*3,1,1.2,1,1.5)-.05}
contained_by{box{<-2.1,-1,-1/3>,<1.4,1,1/3>}}max_gradient 12inverse
hollow pigment{rgbf 1}interior{media{samples 8 emission<3,80,150>/255
density{crackle metric 1color_map{[0rgb 6][.03rgb 0][1rgb 0]}scale<1,
2,1>warp{turbulence<.5,.75,.5>}scale 1/3}}}translate z*3}
Post a reply to this message
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Alain wrote:
> You can slightly broaden the lines and make ther edges a little fuzzy.
That would probably help a lot, thanks for the idea. I'll have to look
at the texture from the cgsphere include, I don't want to make it look
too different.
--
// The Mildly Infamous Blue Herring
#version 3.61;#include"functions.inc"global_settings{assumed_gamma
2.2}isosurface{function{-f_strophoid(x/2-.45,y,z*3,1,1.2,1,1.5)-.05}
contained_by{box{<-2.1,-1,-1/3>,<1.4,1,1/3>}}max_gradient 12inverse
hollow pigment{rgbf 1}interior{media{samples 8 emission<3,80,150>/255
density{crackle metric 1color_map{[0rgb 6][.03rgb 0][1rgb 0]}scale<1,
2,1>warp{turbulence<.5,.75,.5>}scale 1/3}}}translate z*3}
Post a reply to this message
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Blue Herring <pov### [at] bherringcotsenet> wrote:
> If anyone has any ideas for a faster way to get those gridlines to
> render properly as well,
80 = 20 here:
#declare tiletex =
texture {
pigment { uv_mapping
gradient x
pigment_map{
[1/20 rgb 0][1/20 gradient y
colour_map{
[1/20 rgb 0]
[1/20 rgb <0.78431, 0.78431, 0.78431>]
}
]
}
scale -<1/10,1/20,1>
}
}
http://news.povray.org/povray.binaries.images/attachment/%3Cweb.48aaf1a091e8c8de6fa8d7740%40news.povray.org%3E/mirrorsp
heres4.png
http://news.povray.org/povray.binaries.images/attachment/%3Cweb.48ab05fa91e8c8de6fa8d7740%40news.povray.org%3E/mirrorsp
heres4.zip
Post a reply to this message
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Blue Herring <pov### [at] bherringcotsenet> wrote:
>
> If anyone has any ideas for a faster way to get those gridlines to
> render properly as well, I'm all ears (eyes?).
should have used short version, mistakes a valid way of learning, doH!
<web.48ab05fa91e8c8de6fa8d7740@news.povray.org>
<web.48aaf1a091e8c8de6fa8d7740@news.povray.org>
Post a reply to this message
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Nice work! I like it!
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"Almalm" <nomail@nomail> wrote:
> Nice work! I like it!
Me too, absolutely!
I just got a minor problem with posting on cgsphere.com...
Since a bit more than a week, I can't reach that site. Are they having problems
or do I have problems?
Have a nice day
Karl
Post a reply to this message
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He He!! Reminds me of my image back in 2005.
(My previous message got the wrong address. Should be:
http://news.povray.org/povray.binaries.images/thread/%3C42f0bd88%40news.povray.org%3E/?mtop=6
Nice!
Thomas
Post a reply to this message
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High!
Kepler? Probably I lack some background knowledge on how Kepler found
the laws of planetary movement, I just see a rendition of (some)
Platonic solids fitted into concentric spheres! What's so Keplerian
about it?
See you in Khyberspace - www.khyberspace.de
Yadgar
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Jörg 'Yadgar' Bleimann wrote:
> Kepler? ... What's so Keplerian about it?
http://en.wikipedia.org/wiki/Mysterium_Cosmographicum
--
Jonathan Hunt
jon### [at] xlcuscom
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alphaQuad wrote:
> 80 = 20 here:
> #declare tiletex =
> texture {
> pigment { uv_mapping
> gradient x
> pigment_map{
> [1/20 rgb 0][1/20 gradient y
> colour_map{
> [1/20 rgb 0]
> [1/20 rgb <0.78431, 0.78431, 0.78431>]
> }
> ]
> }
> scale -<1/10,1/20,1>
> }
> }
>
>
http://news.povray.org/povray.binaries.images/attachment/%3Cweb.48aaf1a091e8c8de6fa8d7740%40news.povray.org%3E/mirrorsp
> heres4.png
>
http://news.povray.org/povray.binaries.images/attachment/%3Cweb.48ab05fa91e8c8de6fa8d7740%40news.povray.org%3E/mirrorsp
> heres4.zip
>
Thanks! That will be quite helpful, I think. I can see from your image
that it works well.
--
// The Mildly Infamous Blue Herring
#version 3.61;#include"functions.inc"global_settings{assumed_gamma
2.2}isosurface{function{-f_strophoid(x/2-.45,y,z*3,1,1.2,1,1.5)-.05}
contained_by{box{<-2.1,-1,-1/3>,<1.4,1,1/3>}}max_gradient 12inverse
hollow pigment{rgbf 1}interior{media{samples 8 emission<3,80,150>/255
density{crackle metric 1color_map{[0rgb 6][.03rgb 0][1rgb 0]}scale<1,
2,1>warp{turbulence<.5,.75,.5>}scale 1/3}}}translate z*3}
Post a reply to this message
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Almalm wrote:
> Nice work! I like it!
Thanks very much!
--
// The Mildly Infamous Blue Herring
#version 3.61;#include"functions.inc"global_settings{assumed_gamma
2.2}isosurface{function{-f_strophoid(x/2-.45,y,z*3,1,1.2,1,1.5)-.05}
contained_by{box{<-2.1,-1,-1/3>,<1.4,1,1/3>}}max_gradient 12inverse
hollow pigment{rgbf 1}interior{media{samples 8 emission<3,80,150>/255
density{crackle metric 1color_map{[0rgb 6][.03rgb 0][1rgb 0]}scale<1,
2,1>warp{turbulence<.5,.75,.5>}scale 1/3}}}translate z*3}
Post a reply to this message
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Karl Anders wrote:
> Me too, absolutely!
>
> I just got a minor problem with posting on cgsphere.com...
>
> Since a bit more than a week, I can't reach that site. Are they having problems
> or do I have problems?
Thanks! I do recall I wasn't able to get connected to the site last
week, but then the next day I was. I haven't tried in a few days.
Perhaps they are fiddling with the hardware.
--
// The Mildly Infamous Blue Herring
#version 3.61;#include"functions.inc"global_settings{assumed_gamma
2.2}isosurface{function{-f_strophoid(x/2-.45,y,z*3,1,1.2,1,1.5)-.05}
contained_by{box{<-2.1,-1,-1/3>,<1.4,1,1/3>}}max_gradient 12inverse
hollow pigment{rgbf 1}interior{media{samples 8 emission<3,80,150>/255
density{crackle metric 1color_map{[0rgb 6][.03rgb 0][1rgb 0]}scale<1,
2,1>warp{turbulence<.5,.75,.5>}scale 1/3}}}translate z*3}
Post a reply to this message
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Thomas de Groot wrote:
> He He!! Reminds me of my image back in 2005.
>
> (My previous message got the wrong address. Should be:
>
http://news.povray.org/povray.binaries.images/thread/%3C42f0bd88%40news.povray.org%3E/?mtop=6
>
> Nice!
Thanks, I knew this had been done before, but hadn't yet seen yours yet.
Very nice. Glad I'm just shooting for a cgsphere, I think you've set
the bar for a Kepler scene :)
--
// The Mildly Infamous Blue Herring
#version 3.61;#include"functions.inc"global_settings{assumed_gamma
2.2}isosurface{function{-f_strophoid(x/2-.45,y,z*3,1,1.2,1,1.5)-.05}
contained_by{box{<-2.1,-1,-1/3>,<1.4,1,1/3>}}max_gradient 12inverse
hollow pigment{rgbf 1}interior{media{samples 8 emission<3,80,150>/255
density{crackle metric 1color_map{[0rgb 6][.03rgb 0][1rgb 0]}scale<1,
2,1>warp{turbulence<.5,.75,.5>}scale 1/3}}}translate z*3}
Post a reply to this message
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Jörg 'Yadgar' Bleimann wrote:
> High!
>
> Kepler? Probably I lack some background knowledge on how Kepler found
> the laws of planetary movement, I just see a rendition of (some)
> Platonic solids fitted into concentric spheres! What's so Keplerian
> about it?
That's exactly what it is :) Kepler noted similarities between how
these platonic solids were nested and the orbital distances of the
planets. He published drawings of this model in a work called the
Mysterium Cosmographicum. I think he wanted a real one to be made, but
I don't think he ever did.
Check out:
http://en.wikipedia.org/wiki/Mysterium_Cosmographicum
http://en.wikipedia.org/wiki/Kepler#Mysterium_Cosmographicum
--
// The Mildly Infamous Blue Herring
#version 3.61;#include"functions.inc"global_settings{assumed_gamma
2.2}isosurface{function{-f_strophoid(x/2-.45,y,z*3,1,1.2,1,1.5)-.05}
contained_by{box{<-2.1,-1,-1/3>,<1.4,1,1/3>}}max_gradient 12inverse
hollow pigment{rgbf 1}interior{media{samples 8 emission<3,80,150>/255
density{crackle metric 1color_map{[0rgb 6][.03rgb 0][1rgb 0]}scale<1,
2,1>warp{turbulence<.5,.75,.5>}scale 1/3}}}translate z*3}
Post a reply to this message
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Blue Herring wrote:
> That's exactly what it is :) Kepler noted similarities between how
> these platonic solids were nested and the orbital distances of the
> planets. He published drawings of this model in a work called the
> Mysterium Cosmographicum. I think he wanted a real one to be made, but
> I don't think he ever did.
Kepler struggled for years with this idea, but did use models, probably
cheaply and simply made by himself, with no success. I don't remember
if there was a "prescribed order" to the solids and nesting of same,
only that each attempt sent him back to another fit of calculation. It
was the eccentricity of the orbit of Mars, when he finally got the data
compiled by Tycho that led him to try to fit the orbit to an ellipse.
But each of his three laws of planetary motion were many years between
them. An admirable and determined man that fully earned the title of
scientist.
Rich
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"Blue Herring" <pov### [at] bherringcotsenet> schreef in bericht
news:48da5823$1@news.povray.org...
> Glad I'm just shooting for a cgsphere, I think you've set the bar for a
> Kepler scene :)
Oh don't say that! CGSphere demands high quality too!! :-)
I am very curious to see how your scene is going to evolve.
Thomas
Post a reply to this message
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Interesting.
Any chance you might be willing to share the source?
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Woody wrote:
> Interesting.
>
>
> Any chance you might be willing to share the source?
>
Thanks. Sure thing, just let me clean up some dependencies. Be warned,
I'm pretty sure there is at least one flaw in my math so far, since a
couple of those solids are protruding from their spheres.
--
// The Mildly Infamous Blue Herring
#version 3.61;#include"functions.inc"global_settings{assumed_gamma
2.2}isosurface{function{-f_strophoid(x/2-.45,y,z*3,1,1.2,1,1.5)-.05}
contained_by{box{<-2.1,-1,-1/3>,<1.4,1,1/3>}}max_gradient 12inverse
hollow pigment{rgbf 1}interior{media{samples 8 emission<3,80,150>/255
density{crackle metric 1color_map{[0rgb 6][.03rgb 0][1rgb 0]}scale<1,
2,1>warp{turbulence<.5,.75,.5>}scale 1/3}}}translate z*3}
Post a reply to this message
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Blue Herring wrote:
> Woody wrote:
>> Interesting.
>>
>>
>> Any chance you might be willing to share the source?
>>
>
> Thanks. Sure thing, just let me clean up some dependencies. Be warned,
> I'm pretty sure there is at least one flaw in my math so far, since a
> couple of those solids are protruding from their spheres.
>
The source has been posted in p.b.sf.
--
// The Mildly Infamous Blue Herring
#version 3.61;#include"functions.inc"global_settings{assumed_gamma
2.2}isosurface{function{-f_strophoid(x/2-.45,y,z*3,1,1.2,1,1.5)-.05}
contained_by{box{<-2.1,-1,-1/3>,<1.4,1,1/3>}}max_gradient 12inverse
hollow pigment{rgbf 1}interior{media{samples 8 emission<3,80,150>/255
density{crackle metric 1color_map{[0rgb 6][.03rgb 0][1rgb 0]}scale<1,
2,1>warp{turbulence<.5,.75,.5>}scale 1/3}}}translate z*3}
Post a reply to this message
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Blue Herring <pov### [at] bherringcotsenet> wrote:
> Blue Herring wrote:
> > Woody wrote:
> >> Interesting.
> >>
> >>
> >> Any chance you might be willing to share the source?
> >>
> >
> > Thanks. Sure thing, just let me clean up some dependencies. Be warned,
> > I'm pretty sure there is at least one flaw in my math so far, since a
> > couple of those solids are protruding from their spheres.
> >
>
> The source has been posted in p.b.sf.
>
> --
> // The Mildly Infamous Blue Herring
> #version 3.61;#include"functions.inc"global_settings{assumed_gamma
> 2.2}isosurface{function{-f_strophoid(x/2-.45,y,z*3,1,1.2,1,1.5)-.05}
> contained_by{box{<-2.1,-1,-1/3>,<1.4,1,1/3>}}max_gradient 12inverse
> hollow pigment{rgbf 1}interior{media{samples 8 emission<3,80,150>/255
> density{crackle metric 1color_map{[0rgb 6][.03rgb 0][1rgb 0]}scale<1,
> 2,1>warp{turbulence<.5,.75,.5>}scale 1/3}}}translate z*3}
Thanks.
I tried using the solids Paul Bourke posted at
http://local.wasp.uwa.edu.au/~pbourke/geometry/platonic/
But I can't seem to get the proportions or position right.
Post a reply to this message
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Woody wrote:
> Thanks.
>
> I tried using the solids Paul Bourke posted at
> http://local.wasp.uwa.edu.au/~pbourke/geometry/platonic/
>
> But I can't seem to get the proportions or position right.
>
No prob. On cursory examination of those I couldn't work out whether
the edge length or radius is uniform, but I didn't do any calculating.
I cheated and just made the shapes for mine in Wings, mainly because it
was a quicker way to get the type of hollowing I wanted, and copied the
edge length of each into the include file for the calculations. The
spheres/shapes having non-zero thick walls made things more complicated.
However, something still must be wrong, or they wouldn't protrude like
that.
--
// The Mildly Infamous Blue Herring
#include"functions.inc"isosurface{function{-f_strophoid(x/2-.45,y,
z*3,1,1.2,1,1.5)-.05}contained_by{box{<-2.1,-1,-1/3>,<1.4,1,1/3>}}
max_gradient 12inverse hollow pigment{rgbf 1}interior{media{samples
8 emission<3,80,150>/255density{crackle metric 1color_map{[0rgb 6]
[.03rgb 0][1rgb 0]}scale<1,2,1>warp{turbulence<.5,.75,.5>}scale 1/
3}}}translate z*3}
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