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Or more appropriately: "Isosurface accident with leopard pattern"
Post a reply to this message
Attachments:
Download 'leopard.jpg' (59 KB)
Preview of image 'leopard.jpg'
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Christian Froeschlin <chr### [at] chrfr de> wrote:
> Or more appropriately: "Isosurface accident with leopard pattern"
Ooh, I want one for my table :)
Sam
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"Christian Froeschlin" <chr### [at] chrfrde> schreef in bericht
news:489e1786@news.povray.org...
> Or more appropriately: "Isosurface accident with leopard pattern"
>
I am a bit puzzled by this object! On the fringes of the sphere it looks
like a texture; towards the camera, it looks like solid cones; the highlight
looks like one from a solid sphere though...; and the shadows are from...
whatever!
How did you do this?
Thomas
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Thomas de Groot wrote:
> I am a bit puzzled by this object! On the fringes of the sphere it looks
> like a texture; towards the camera, it looks like solid cones; the highlight
> looks like one from a solid sphere though...; and the shadows are from...
> whatever!
Oh, I puzzled the master. Wat een eer! ;)
Actually, I just wanted to make a bumpy sphere by subtracting
f_sphere - f_leopard. However, as I neglected to normalize the
input coordinates for f_leopard to the sphere surface, the
3D-ness of the leopard pattern caused disconnected blobs to
rise from the surface. As this would obviously fall apart on
its own (abstract or not), I encased it in a glass sphere,
which also distorted the view a bit due to the ior. As it
was so sphere-ish, I used the CGSphere environment, which
didn't have anything to reflect except the ground plane
so the glassiness is a bit lost on the upper half.
And because this object is full of shadows I had to use a
bit of radiosity but was not patient enough for quality. It
took about 40 minutes on a P4 with just Radiosity_Debug.
I made the texture itself a bit less rougher so the
artefacts would not scream out quite so loud ;)
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Samuel Benge wrote:
> Ooh, I want one for my table :)
thanks, but mass production has not started yet ;)
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"Christian Froeschlin" <chr### [at] chrfrde> schreef in bericht
news:489eca63$1@news.povray.org...
>
> Oh, I puzzled the master. Wat een eer! ;)
<grin>
> Actually, I just wanted to make a bumpy sphere by subtracting
> f_sphere - f_leopard. However, as I neglected to normalize the
> input coordinates for f_leopard to the sphere surface, the
> 3D-ness of the leopard pattern caused disconnected blobs to
> rise from the surface. As this would obviously fall apart on
> its own (abstract or not), I encased it in a glass sphere,
> which also distorted the view a bit due to the ior. As it
> was so sphere-ish, I used the CGSphere environment, which
> didn't have anything to reflect except the ground plane
> so the glassiness is a bit lost on the upper half.
>
> And because this object is full of shadows I had to use a
> bit of radiosity but was not patient enough for quality. It
> took about 40 minutes on a P4 with just Radiosity_Debug.
> I made the texture itself a bit less rougher so the
> artefacts would not scream out quite so loud ;)
Thank you indeed for your info. Interestingly this makes for an intriguing
object that partakes of 2D and 3D at the same time. Very nice!
Thomas
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On Sun, 10 Aug 2008 14:50:57 +0200, "Thomas de Groot" <t.d### [at] internlDOTnet>
wrote:
>
>"Christian Froeschlin" <chr### [at] chrfrde> schreef in bericht
>news:489eca63$1@news.povray.org...
>>
>> Oh, I puzzled the master. Wat een eer! ;)
>
><grin>
--
Regards
Stephen
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"Stephen" <mcavoysAT@aolDOTcom> schreef in bericht
news:ovut94da4kav3d9502b81s42mf03rjqmnb@4ax.com...
> On Sun, 10 Aug 2008 14:50:57 +0200, "Thomas de Groot"
> <t.d### [at] internlDOTnet>
> wrote:
>
>
So, you are eavesdropping? :-)
Thomas
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On Mon, 11 Aug 2008 09:16:48 +0200, "Thomas de Groot" <t.d### [at] internlDOTnet>
wrote:
>
>"Stephen" <mcavoysAT@aolDOTcom> schreef in bericht
>news:ovut94da4kav3d9502b81s42mf03rjqmnb@4ax.com...
>> On Sun, 10 Aug 2008 14:50:57 +0200, "Thomas de Groot"
>> <t.d### [at] internlDOTnet>
>> wrote:
>>
>>
>
>So, you are eavesdropping? :-)
>
<groan>
I thought that Christian was comparing you to Vincent van Gogh
:)
--
Regards
Stephen
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