POV-Ray : Newsgroups : povray.binaries.animations : We know POV-Ray … Server Time
29 Mar 2024 03:15:11 EDT (-0400)
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From: Le Forgeron
Subject: Re: We know POV-Ray artransformations …
Date: 10 May 2013 13:04:17
Message: <518d2891$1@news.povray.org>
Le 09/05/2013 22:07, Subclick nous fit lire :
> Not for ordinary solid primitives, like a text object, for instance, but
> who cares! :)
> 
> http://img845.imageshack.us/img845/6567/thetain3d.gif
> 

Nice, the mesh seems to show a bit.


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From: Subclick
Subject: Re: We know POV-Ray …
Date: 25 May 2021 09:40:14
Message: <875yz7ort1.fsf@sp.am>
What now?


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Attachments:
Download 'thetain3d.gif' (878 KB) Download 'utf-8' (1 KB)

Preview of image 'thetain3d.gif'
thetain3d.gif

From: Mike Horvath
Subject: ansformations_…
Date: 25 May 2021 13:59:13
Message: <60ad3af1$1@news.povray.org>
On 5/25/2021 9:40 AM, Subclick wrote:
> 
> What now?
> 
> 
> 
> Whatever you notice, it’s not the mesh, because there’s no mesh.
> 


Whatever it is, it looks sweet and tasty!


Mike


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From: Alain Martel
Subject: ansformations_…
Date: 25 May 2021 15:27:15
Message: <60ad4f93$1@news.povray.org>
Le 2021-05-25 à 09:40, Subclick a écrit :
> 
> What now?
> 
> 
> 
> Whatever you notice, it’s not the mesh, because there’s no mesh.
> 

Nice.

Let me guess... An isosurface with cyclical perturbation.


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From: Mike Horvath
Subject: ansformations_…
Date: 25 May 2021 16:21:17
Message: <60ad5c3d@news.povray.org>
On 5/25/2021 9:40 AM, Subclick wrote:
> 
> What now?
> 
> 
> 
> Whatever you notice, it’s not the mesh, because there’s no mesh.
> 


The faceted texture makes it look like a mesh. I was fooled.


Mike


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From: Bald Eagle
Subject: Re: We know POV-Ray =3D?utf-8?Q?doesn=3DE2=3D80=3D99t?=3D support non-linea=
Date: 25 May 2021 16:45:00
Message: <web.60ad60c519ed29771f9dae3025979125@news.povray.org>
Subclick <no### [at] spam> wrote:
> What now?

Make it out of jello?  :D

And also know that related to Jello, sin (b) / tan (b) = . . . ?


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From: Subclick
Subject: Re: We know POV-Ray …
Date: 25 May 2021 17:21:43
Message: <871r9upl09.fsf@sp.am>
Alain Martel <kua### [at] videotronca> writes:

> Let me guess... An isosurface with cyclical perturbation.

I wish!  I couldn’t come up with a way to get rid of the infinite
gradient of the ‘object’ pattern on the object’s boundary without
ruining it in the process, so I made do with a ridiculous number of thin
slices of the object rotated appropriately.


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From: Bald Eagle
Subject: Re: We know POV-Ray =3D?utf-8?Q?doesn=3DE2=3D80=3D99t?=3D supportnon-linear=
Date: 25 May 2021 20:15:00
Message: <web.60ad926b8204e24d1f9dae3025979125@news.povray.org>
Subclick <no### [at] spam> wrote:
> Alain Martel <kua### [at] videotronca> writes:
>
> > Let me guess... An isosurface with cyclical perturbation.
>


> ruining it in the process, so I made do with a ridiculous number of thin
> slices of the object rotated appropriately.

Because it's a giant mess.  You can do it, and it will be a bit slow, but here's
a link for you:

http://news.povray.org/web.5ebedadaa032ea3dfb0b41570%40news.povray.org


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From: Subclick
Subject: Re: We know POV-Ray =3D?utf-8?Q?doesn=3DE2=3D80=3D99t?=3D supportnon-linear=
Date: 26 May 2021 15:19:21
Message: <87wnrlnw07.fsf@sp.am>
"Bald Eagle" <cre### [at] netscapenet> writes:

> Because it's a giant mess.  You can do it, and it will be a bit slow,
> but here's a link for you:
>
> http://news.povray.org/web.5ebedadaa032ea3dfb0b41570%40news.povray.org

Thanks, but my goal was to get an arbitrary POV-Ray object—like a text
object consisting of a single theta—into an isosurface, so it could then
be transformed non-linearly at will.  Of course, that’d require a
generic way to make up a smooth transition, with a finite gradient, from
the outside to the inside, to replace the ‘object’ pattern’s jump from 0
to 1 at the boundary.


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From: Bald Eagle
Subject: Re: We know POV-Ray =3D3D?utf-8?Q?doesn=3D3DE2=3D3D80=3D3D99t?=3D3D support=
Date: 26 May 2021 17:00:00
Message: <web.60aeb67ee254803a1f9dae3025979125@news.povray.org>
Subclick <no### [at] spam> wrote:




> generic way to make up a smooth transition, with a finite gradient, from

> to 1 at the boundary.

Yes, sorry - I think I botched that reply.

Bill Pokorny helped me along doing the same thing a while back, and here's one
of the files related to that.   Feel free to ask any questions if the code
(mostly his) is unclear.


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Attachments:
Download 'objectnormalfunction.pov.txt' (6 KB)

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