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From: Jim Charter
Subject: examples pictures for my reply to displacement thread on general
Date: 14 Feb 2008 21:02:40
Message: <47b4f2c0@news.povray.org>
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here is the real displaced result and the image map used
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Attachments:
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Download 'k13.cup.example.jpg' (61 KB)
Preview of image 'img.0201.jpg'
![img.0201.jpg](/povray.binaries.images/attachment/%3C47b4f2c0%40news.povray.org%3E/img.0201.jpg?ttop=443866&toff=3400&preview=1)
Preview of image 'k13.cup.example.jpg'
![k13.cup.example.jpg](/povray.binaries.images/attachment/%3C47b4f2c0%40news.povray.org%3E/k13.cup.example.jpg?ttop=443866&toff=3400&preview=1)
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Jim Charter <jrc### [at] msn com> wrote:
> here is the real displaced result and the image map used
Thanks, Jim, for the code in the Newsgroups General Section re Freeware
Displacement Mapping and for the image. I'm glad to be a part of the Pov-Ray
community.
Here's an illustration of the use of Blender displacement mapping. It was
exported from Blend to Pov-Ray by the Blend2Pov script by C. Ruiz.
It's based on a public domain clip art illustration of an anteater. The black
and white clip art, when displaced using the image itself as the displacement
map, has the effect of making the image appear to pop up from the page.
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Download 'exp1.png' (231 KB)
Preview of image 'exp1.png'
![exp1.png](/povray.binaries.images/attachment/%3Cweb.47b534054d0fa8d4d3b1f88e0%40news.povray.org%3E/exp1.png?ttop=443866&toff=3400&preview=1)
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From: nemesis
Subject: Re: examples pictures for my reply to displacement thread on general
Date: 15 Feb 2008 09:41:48
Message: <47b5a4ac@news.povray.org>
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FlaPovFan wrote:
> Here's an illustration of the use of Blender displacement mapping. It was
> exported from Blend to Pov-Ray by the Blend2Pov script by C. Ruiz.
you know, there are really two things in that illustration: an image
mapping with an armadillo painting and a displacement of the plane that
vaguely resembles the contours of the armadillo figure, it got some
weird bumps in the body that don't seem to match with anything in the
figure.
anyway, I googled for an armadillo image, dessaturated it in the Gimp as
well as applied some Gaussian defocussing in order to get a truly smooth
displacement with a height_field:
union {
height_field { png
"Armadillo3.png"
smooth
pigment { rgb .4 }
finish { specular 1 roughness .1 }
scale y*.02
translate -x/2
rotate z*180
scale 3
}
light_source { 4-8*z 1 }
rotate -x*50
translate z*4-y/2
}
light_source { -8*z .5 shadowless }
camera { angle 50 }
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Attachments:
Download 'armadillo.png' (81 KB)
Preview of image 'armadillo.png'
![armadillo.png](/povray.binaries.images/attachment/%3C47b5a4ac%40news.povray.org%3E/armadillo.png?ttop=443866&toff=3400&preview=1)
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From: nemesis
Subject: Re: examples pictures for my reply to displacement thread on general
Date: 15 Feb 2008 09:44:29
Message: <47b5a54d$1@news.povray.org>
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damn, I should've scaled the height_field x component to match the
proportion in the original image. height_field is a 1x1 object...
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nemesis <nam### [at] nospamgmail com> wrote:
> damn, I should've scaled the height_field x component to match the
> proportion in the original image. height_field is a 1x1 object...
Thanks for the alternate methods to obtain relief through displacement.
I know this is one armadillo too many, but here is one more post of the Blender
displacement map image, this time without the subsurface scattering modifier
added. Leaving it out sharpens the image.
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Attachments:
Download 'exp1.png' (217 KB)
Preview of image 'exp1.png'
![exp1.png](/povray.binaries.images/attachment/%3Cweb.47b5deb04d0fa8d4d3b1f88e0%40news.povray.org%3E/exp1.png?ttop=443866&toff=3400&preview=1)
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From: Thomas de Groot
Subject: Re: examples pictures for my reply to displacement thread on general
Date: 16 Feb 2008 04:11:24
Message: <47b6a8bc@news.povray.org>
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"FlaPovFan" <nomail@nomail> schreef in bericht
news:web.47b5deb04d0fa8d4d3b1f88e0@news.povray.org...
>
> I know this is one armadillo too many, but here is one more post of the
> Blender
> displacement map image, this time without the subsurface scattering
> modifier
> added. Leaving it out sharpens the image.
>
Invasion of the armadillo's.....
Very nice. This could lead to a number of interesting scenes, in particular
Escher-like ones, especially this:
http://www.artchive.com/artchive/e/escher/escher_reptiles.jpg
Thomas
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"Thomas de Groot" <t.d### [at] inter nlDOTnet> wrote:
> http://www.artchive.com/artchive/e/escher/escher_reptiles.jpg
that Escher guy sure was imaginative. but those are crocs, not a mammal... :)
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From: Thomas de Groot
Subject: Re: examples pictures for my reply to displacement thread on general
Date: 17 Feb 2008 03:12:10
Message: <47b7ec5a$1@news.povray.org>
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"nemesis" <nam### [at] gmail com> schreef in bericht
news:web.47b7301f4d0fa8d4cd85e21f0@news.povray.org...
> "Thomas de Groot" <t.d### [at] inter nlDOTnet> wrote:
>> http://www.artchive.com/artchive/e/escher/escher_reptiles.jpg
>
> that Escher guy sure was imaginative. but those are crocs, not a
> mammal... :)
>
>
There's a croc pulling my leg!!! :-)
Thomas
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"Thomas de Groot" <t.d### [at] inter nlDOTnet> wrote:
> "FlaPovFan" <nomail@nomail> schreef in bericht
> news:web.47b5deb04d0fa8d4d3b1f88e0@news.povray.org...
> >
> > I know this is one armadillo too many, but here is one more post of the
> > Blender
> > displacement map image, this time without the subsurface scattering
> > modifier
> > added. Leaving it out sharpens the image.
> >
>
> Invasion of the armadillo's.....
> Very nice. This could lead to a number of interesting scenes, in particular
> Escher-like ones, especially this:
> http://www.artchive.com/artchive/e/escher/escher_reptiles.jpg
>
> Thomas
Hi, Thoman.
This is a link to a huge resource for high-quality public domain clip art, with
all the mammals or reptiles you could possibly want
http://www.wpclipart.com/
FlaPovFan
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From: Thomas de Groot
Subject: Re: examples pictures for my reply to displacement thread on general
Date: 17 Feb 2008 11:03:21
Message: <47b85ac9$1@news.povray.org>
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"FlaPovFan" <nomail@nomail> schreef in bericht
news:web.47b84c9d4d0fa8d4d3b1f88e0@news.povray.org...
>
> Hi, Thoman.
>
> This is a link to a huge resource for high-quality public domain clip art,
> with
> all the mammals or reptiles you could possibly want
>
> http://www.wpclipart.com/
>
>
Yes indeed!
Now, the challenge is to find a clipart with it's corresponding 3d model and
make that Escher image... One would need both of them. Hmmm interesting
challenge...
Thomas
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