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A df3 media ghost of a TV character I liked.
Bill P.
Post a reply to this message
Attachments:
Download 'ghost.jpg' (94 KB)
Preview of image 'ghost.jpg'
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William F Pokorny <ano### [at] anonymous org> wrote:
> A df3 media ghost of a TV character I liked.
> Bill P.
Hi Bill,
I have never used DF3 files before but now see I need to read up on them as I
did not realise you could control the shape of a cloud in this way.
Are there any good resources you can point me to?
Thanks
Sean
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On 20-9-2013 4:21, William F Pokorny wrote:
> A df3 media ghost of a TV character I liked.
> Bill P.
This gives me the shivers! ;-)
Very nicely done; like Sean, I need to read up on df3 creation. I have
used them for clouds of course (Gilles Tran) and as proximity pattern
holders, but those are generated out of my control so to speak. Now
/this/ is a different story altogether.
Thomas
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Thomas de Groot <tho### [at] degrootorg> wrote:
> On 20-9-2013 4:21, William F Pokorny wrote:
> > A df3 media ghost of a TV character I liked.
> > Bill P.
>
> This gives me the shivers! ;-)
>
> Very nicely done; like Sean, I need to read up on df3 creation. I have
> used them for clouds of course (Gilles Tran) and as proximity pattern
> holders, but those are generated out of my control so to speak. Now
> /this/ is a different story altogether.
>
A few years ago, I created an animation scene which intersected an object with a
moving thin box. The resulting images were saved as tga’s then made into a df3
with tga2df3. A bit like a Tomography scan. I used three filters on the
orthographic camera and got red, green and blue df3’s. The method does work with
meshes but solid objects are better.
A short animation is posted here:
http://tiny.cc/9qep3w
The object is a cubic Mandelbrot (code posted by Andrew) from an angle that I
never found again.
Stephen
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On 20-9-2013 11:49, Stephen wrote:
> A few years ago, I created an animation scene which intersected an object with a
> moving thin box. The resulting images were saved as tga’s then made into a df3
> with tga2df3. A bit like a Tomography scan. I used three filters on the
> orthographic camera and got red, green and blue df3’s. The method does work with
> meshes but solid objects are better.
> A short animation is posted here:
> http://tiny.cc/9qep3w
> The object is a cubic Mandelbrot (code posted by Andrew) from an angle that I
> never found again.
A creepy scene ;-)
Yes, that is how I understand the making of. Never done it myself but I
see the potentials. Much to do...
[shambles off humming /ain't gonna study pov no more.../]
Thomas
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On 09/20/2013 01:41 AM, s.day wrote:
> William F Pokorny <ano### [at] anonymousorg> wrote:
>> A df3 media ghost of a TV character I liked.
>> Bill P.
>
> Hi Bill,
>
> I have never used DF3 files before but now see I need to read up on them as I
> did not realise you could control the shape of a cloud in this way.
>
> Are there any good resources you can point me to?
>
> Thanks
>
> Sean
>
Hi Sean,
After work today I'll post more if I find the time. Take a look at the
thread "interesting shape: CA, DF3, isosurface (284k jpg)" started by
Sam. He used C++ code Warp put together, but to which I do not have a
reference handy.
Unsure if this link will work as pasted but :
http://news.povray.org/povray.binaries.images/thread/%3C4a28719b%241%40news.povray.org%3E/
Anyway, in that thread there is a message from Darren about his MakeDF3
tcl utility which he posted to p.b.utilities. I know tcl, so in the end
used my own version of tcl code, but this utility is where I started. It
is the only general utility for manipulating DF3s I know aside from
Gilles's make cloud approach.
Aside: Povray 3.7 itself might be able to write the df3 file format as I
know it can now write most others, but wasn't the route I took.
Look too in the documentation & scenes files for a couple of small
examples using provided df3 files. There is one "star" one for a simple
cloud shape.
Bill P.
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On 20/09/13 12:25, Thomas de Groot wrote:
>
> [shambles off humming /ain't gonna study pov no more.../]
>
> Thomas
>
... to the tune of Maggie's Farm maybe?
John
--
Protect the Earth
It was not given to you by your parents
You hold it in trust for your children
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William F Pokorny <ano### [at] anonymousorg> wrote:
> A df3 media ghost of a TV character I liked.
> Bill P.
Creepy!
Just recently I developed a new way to convert any (supported) object into a
volumetric pattern, and it doesn't use df3 files. The idea is to render an
animation of a proximity pattern (each frame = one slice), and then combine all
the frames into a gradient z pigment_pattern in another scene file.
Attached is an example of a mesh (modeled in Sculptris+Blender) converted in
this manner, given a displacement pattern, and rendered as an isosurface. I've
made the process as painless as possible, and will try to post the source later
for anyone who is interested in looking at it.
Sam
Post a reply to this message
Attachments:
Download 'skullnewsidec-iso5m_46s.jpg' (36 KB)
Preview of image 'skullnewsidec-iso5m_46s.jpg'
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On 20/09/13 18:39, Samuel Benge wrote:
> Just recently I developed a new way to convert any (supported) object into a
> volumetric pattern, and it doesn't use df3 files. The idea is to render an
> animation of a proximity pattern (each frame = one slice), and then combine all
> the frames into a gradient z pigment_pattern in another scene file.
>
> Attached is an example of a mesh (modeled in Sculptris+Blender) converted in
> this manner, given a displacement pattern, and rendered as an isosurface. I've
> made the process as painless as possible, and will try to post the source later
> for anyone who is interested in looking at it.
>
> Sam
>
Interesting. I look forward to seeing the source
John
--
Protect the Earth
It was not given to you by your parents
You hold it in trust for your children
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And here's a shot of the isosurface, sans displacement (the original mesh looks
nearly identical, so I won't post a picture of it).
Post a reply to this message
Attachments:
Download 'skullnewside-iso2m_38.jpg' (44 KB)
Preview of image 'skullnewside-iso2m_38.jpg'
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Doctor John <j.g### [at] gmailcom> wrote:
> On 20/09/13 12:25, Thomas de Groot wrote:
> >
> > [shambles off humming /ain't gonna study pov no more.../]
> >
> > Thomas
> >
>
> ... to the tune of Maggie's Farm maybe?
>
> John
> --
> Protect the Earth
> It was not given to you by your parents
> You hold it in trust for your children
LOL, yes this one comes into mind.
Bill did a very interesting work here and I really would like to learn more
about its creation. I have worked a bit with df3 recently and experienced the
one or other difficulty. I wonder how the df3 is created. And I wonder how it is
parametrised to achieve this colors. Hope he works not overtime today...
Since I'm working about clouds a little bit at the moment (just to have a
collection of them and musn't bother about this topic any longer) I came up with
the idea to put existing figures like my rubber ducks or may be Poser Jessie or
a sailing boat into (a heavily modified version of) Gill Tran's makro as a
ground object to create the kind of clouds we often associate with this figures.
So I'm very interested in Bill's approach here.
Best regards,
Michael
P.S.: And yes Sam, you posted very interestings things too while I wrote this
post. I only wonder what has happend to the skull to look in this way. It cannot
have been a bullet... Looks great anyway ;-)
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On 20/09/2013 6:44 PM, Doctor John wrote:
> Interesting. I look forward to seeing the source
Me too.
--
Regards
Stephen
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On 09/20/2013 08:08 AM, William F Pokorny wrote:
>
>
More detail on the df3 media technique used for the ghost image and a
working example to be posted to p.b.tutorials. Here is the README from
the tar ball:
---
The media technique attempts to avoid many of the known issues of using
multiple media containers to create a complex media objects by stuffing
shapes and colors into separate df3 files. Further the template provided
(test.pov) supports up to 4 patterns, shown as rows in the included png
file.
Each row is a media, which are added together in a final interior. In
the original “ghost” post two different patterned medias positionally
overlap the head shape to create a much more complex result.
The colors in each pattern row are determined by values within color df3
files which themselves pick predefined colored densities from a density
map. In each media the color and shape df3 values are multiplied. Where
the shape values are 0 we get nothing in the resultant media.
The shapes – rough spheres arranged in pattern rows – come from shapes
df3s where the voxel values are all one value (200) existing only to
define the overall shape. Two different turbulence warps are used of the
shapes. These same warps are used to warp the color DF3s so the colors
track the shapes no matter how turbulent in the end. See paintblot.png.
The DF3 files are created with a hacked tcl method based on Darren's
MakeDF3 tcl utility which he posted to p.b.utilities.
Bill P.
Post a reply to this message
Attachments:
Download 'paintblot.jpg' (114 KB)
Download 'test.jpg' (45 KB)
Preview of image 'paintblot.jpg'
Preview of image 'test.jpg'
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On 09/20/2013 01:39 PM, Samuel Benge wrote:
> William F Pokorny <ano### [at] anonymousorg> wrote:
>> A df3 media ghost of a TV character I liked.
>> Bill P.
>
> Creepy!
>
> Just recently I developed a new way to convert any (supported) object into a
> volumetric pattern, and it doesn't use df3 files. The idea is to render an
> animation of a proximity pattern (each frame = one slice), and then combine all
> the frames into a gradient z pigment_pattern in another scene file.
>
> Attached is an example of a mesh (modeled in Sculptris+Blender) converted in
> this manner, given a displacement pattern, and rendered as an isosurface. I've
> made the process as painless as possible, and will try to post the source later
> for anyone who is interested in looking at it.
>
> Sam
>
Terrific! I guess we are both thinking ahead to Halloween... I look
forward to seeing the source as I am not quite following how the final
pattern works.
Bill P.
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On 20-9-2013 19:39, Samuel Benge wrote:
> Just recently I developed a new way to convert any (supported) object into a
> volumetric pattern, and it doesn't use df3 files. The idea is to render an
> animation of a proximity pattern (each frame = one slice), and then combine all
> the frames into a gradient z pigment_pattern in another scene file.
>
> Attached is an example of a mesh (modeled in Sculptris+Blender) converted in
> this manner, given a displacement pattern, and rendered as an isosurface. I've
> made the process as painless as possible, and will try to post the source later
> for anyone who is interested in looking at it.
And the Master did it again! The Curse of the Wicker Mummy ;-)
(Back to school, Thomas! Back to school!)
Thomas
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On 20-9-2013 17:23, Doctor John wrote:
> On 20/09/13 12:25, Thomas de Groot wrote:
>>
>> [shambles off humming /ain't gonna study pov no more.../]
>>
>> Thomas
>>
>
> ... to the tune of Maggie's Farm maybe?
LOL Yes, why not indeed. It came to me as Down by the riverside aka
Ain't gonna study war no more.
Thomas
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>William F Pokorny on date 20/09/2013 4.21 wrote:
> A df3 media ghost of a TV character I liked.
> Bill P.
Very well done.
It remember me a 3D ultrasound image.
;-)
Paolo
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>Samuel Benge on date 20/09/2013 19.39 wrote:
> William F Pokorny <ano### [at] anonymousorg> wrote:
>> A df3 media ghost of a TV character I liked.
>> Bill P.
>
> Creepy!
>
> Just recently I developed a new way to convert any (supported) object into a
> volumetric pattern, and it doesn't use df3 files. The idea is to render an
> animation of a proximity pattern (each frame = one slice), and then combine all
> the frames into a gradient z pigment_pattern in another scene file.
>
> Attached is an example of a mesh (modeled in Sculptris+Blender) converted in
> this manner, given a displacement pattern, and rendered as an isosurface. I've
> made the process as painless as possible, and will try to post the source later
> for anyone who is interested in looking at it.
>
> Sam
>
"The return of the eroded mummy"?
A very good image!
;-)
Paolo
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Thomas de Groot <tho### [at] degrootorg> wrote:
> The Curse of the Wicker Mummy ;-)
Paolo Gibellini <p.g### [at] gmailcom> wrote:
> "The return of the eroded mummy"?
Haha, yeah :) Reminds me of something Stephen King wrote in one of his novels
(It), "walk faster, the mummy's chasing us!"
I hope to have the code all clean and sparkly soon... I don't say this much, but
Real Life got in the way :P
Sam
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On 23-9-2013 18:44, Samuel Benge wrote:
> Thomas de Groot <tho### [at] degrootorg> wrote:
>> The Curse of the Wicker Mummy ;-)
>
> Paolo Gibellini <p.g### [at] gmailcom> wrote:
>> "The return of the eroded mummy"?
>
> Haha, yeah :) Reminds me of something Stephen King wrote in one of his novels
> (It), "walk faster, the mummy's chasing us!"
>
> I hope to have the code all clean and sparkly soon... I don't say this much, but
> Real Life got in the way :P
>
Great! It is an intriguing concept.
Thomas
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