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I have a model built from various POV primitives and I would like to export
it to another 3D package - possible the free version of Truespace.
Can POV objects be "converted" to, say, DXF meshes together with the
textures?
Thanks
Colin
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On Thu, 24 Apr 2003 09:05:48 +0100, "CB" <col### [at] nospam couk> wrote:
> I have a model built from various POV primitives and I would like to export
> it to another 3D package - possible the free version of Truespace.
>
> Can POV objects be "converted" to, say, DXF meshes together with the
> textures?
Not that I want you give an answer but I'm seriously interested why you used
POV-Ray as modeller here? Is that it is just easy to operate? Or what ?
ABX
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"ABX" <abx### [at] abxartpl> wrote in message
news:u28fav447mcau01qpr6imqst4o0m0uf238@4ax.com...
> On Thu, 24 Apr 2003 09:05:48 +0100, "CB" <col### [at] nospamcouk> wrote:
> > I have a model built from various POV primitives and I would like to
export
> > it to another 3D package - possible the free version of Truespace.
> >
> > Can POV objects be "converted" to, say, DXF meshes together with the
> > textures?
>
> Not that I want you give an answer but I'm seriously interested why you
used
> POV-Ray as modeller here? Is that it is just easy to operate? Or what ?
Well, I built the model several years ago - about 1994 - as a logo for a
local charity. At that time (as far as I recall) there didn't seem to be any
free GUI-based 3D modellers. I first encountered POV a year or so before
that when example images really fired my imagination - the logo was my pet
project for getting involved in POV.
Also at the time there was no support for Truetype fonts in POV, so I
managed to use a utility that came with POLYRAY to export truetype text
strings to smooth_triangle meshes. The meshes formed flat-faced extruded
text. and I even managed to write a filter (in awk of all things!) to bevel
the text. The problem was that the POLYRAY utility exported a LOT of
triangles for each letter which took ages just to parse on my 486 DX. I
eventually got help from a guy at Oracle who created the animation on a
Winserver running in the background, but even this took several days to
complete. The final animation was in DTA (Dave's Targa Animator) format.
Since then I have done very little 3D work, but was recently asked to
reproduce the animation with some textual changes. At least now some of the
flat-faced text could be defined directly in the current version of POVray
using the truetype object, and this speeded up rendering a LOT! This time
the animation was done for (interlaced) TV.
However, these days it looks fairly uninspiring viewed from a static
location, hence my desire to sweep the camera past and around it. It looks
like this can't be done effectively in POVray so either I somehow export the
model to another 3D package, or rebuild it from scratch in another 3D
package. I'd rather avoid having to rebuild it if possible.
(Incidentally, I first became interested in 3D CGI in about 1982 when I got
hold of a copy of the legendary Foley and Van Dam "The Fundamentals of
Interactive Computer Graphics" which contained the algorithms for
translation and rotation of objects in 3D space. At the time I had just
acquired a Sinclair ZX81 so I wrote a 3D package in Sinclair Basic!)
Sorry for the long reply - I got carried away!
Regards
Colin
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> It looks
> like this can't be done effectively in POVray
BTW, I wrote the previous message before noticing your latest 2 replies in
the previous thread, which I will investigate!
:-)
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CB <col### [at] nospamcouk> wrote:
> Can POV objects be "converted" to, say, DXF meshes together with the
> textures?
http://www.students.tut.fi/~warp/povQandT/filesQandT.html#povtootherformatsdifficulty
--
#macro M(A,N,D,L)plane{-z,-9pigment{mandel L*9translate N color_map{[0rgb x]
[1rgb 9]}scale<D,D*3D>*1e3}rotate y*A*8}#end M(-3<1.206434.28623>70,7)M(
-1<.7438.1795>1,20)M(1<.77595.13699>30,20)M(3<.75923.07145>80,99)// - Warp -
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On Thu, 24 Apr 2003 11:17:30 +0100, "CB" <col### [at] nospamcouk> wrote:
> > It looks
> > like this can't be done effectively in POVray
>
> BTW, I wrote the previous message before noticing your latest 2 replies in
> the previous thread, which I will investigate!
For examples of camera movement look at
http://www.irtc.org/ftp/pub/anims/2003-01-15/bobsled.mpg
http://www.irtc.org/ftp/pub/anims/2002-04-15/oldmrr.mpg
In the next MegaPOV there will be another types of splines available which can
result with more interesting paths.
ABX
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"Warp" <war### [at] tagpovrayorg> wrote in message
news:3ea7bfa6@news.povray.org...
> CB <col### [at] nospamcouk> wrote:
> > Can POV objects be "converted" to, say, DXF meshes together with the
> > textures?
>
>
http://www.students.tut.fi/~warp/povQandT/filesQandT.html#povtootherformatsd
ifficulty
>
Thanks for that link. Yes, the POVray scripting language has grown over the
years and I can see the problems here.
My model is simply constructed from a list of explicitly defined primitives,
so there is no looping or anything like that. In this case the problem would
be converting the POV primitives to triangle meshes. I had wondered if a
utility existed to do this, but I do agree that for the more general case it
would be even more difficult.
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On Thu, 24 Apr 2003 09:05:48 +0100, "CB" <col### [at] nospamcouk> wrote:
>I have a model built from various POV primitives and I would like to export
>it to another 3D package - possible the free version of Truespace.
>
>Can POV objects be "converted" to, say, DXF meshes together with the
>textures?
>
Thomas Baier has written a few utilities to do this with early versions of Pov.
You might be lucky.
http://www.tb-software.com/products.html
Regards
Stephen
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<mca### [at] aolcom (S McAvoy)> wrote in message
news:3ea7caa0.47156327@news.povray.org...
> >Can POV objects be "converted" to, say, DXF meshes together with the
> >textures?
> >
> Thomas Baier has written a few utilities to do this with early versions of
Pov.
> You might be lucky.
> http://www.tb-software.com/products.html
>
Thanks Steven. Looks promising. This page lists POVRAY 3.5 and MORAY formats
supported:
http://www.tb-software.com/format_info.html
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On Thu, 24 Apr 2003 13:01:25 +0100, "CB" <col### [at] nospamcouk> wrote:
>
>Thanks Steven. Looks promising. This page lists POVRAY 3.5 and MORAY formats
>supported:
>
If you don't have Moray, it can export UDO and RIB files. I've not tried it
though.
Regards
Stephen
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CB wrote:
>
> I have a model built from various POV primitives and I would like to export
> it to another 3D package - possible the free version of Truespace.
>
> Can POV objects be "converted" to, say, DXF meshes together with the
> textures?
TriScan Macro, maybe.
http://www.silvertome.com/packages.html
--
Ken Tyler
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From: Le Forgeron
Subject: Re: Exporting POV objects to other 3D packages
Date: 30 Apr 2003 05:42:39
Message: <3EAF9B5E.6010105@free.fr>
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CB wrote:
> "Warp" <war### [at] tagpovrayorg> wrote in message
> news:3ea7bfa6@news.povray.org...
>
>>CB <col### [at] nospamcouk> wrote:
>>
>>>Can POV objects be "converted" to, say, DXF meshes together with the
>>>textures?
>>>
>>
> http://www.students.tut.fi/~warp/povQandT/filesQandT.html#povtootherformatsd
> ifficulty
>
>
> Thanks for that link. Yes, the POVray scripting language has grown over the
> years and I can see the problems here.
>
> My model is simply constructed from a list of explicitly defined primitives,
> so there is no looping or anything like that. In this case the problem would
> be converting the POV primitives to triangle meshes. I had wondered if a
> utility existed to do this, but I do agree that for the more general case it
> would be even more difficult.
>
Using a patched povray, you could tesselate and save your objet in gts
format.
See http://jgrimbert.free.fr/pov/patch/tessel/index.html
in particular gts_save
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From: Christoph Hormann
Subject: Re: Exporting POV objects to other 3D packages
Date: 30 Apr 2003 07:22:18
Message: <3EAFB1EA.9CE3A042@gmx.de>
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Le Forgeron wrote:
>
> [...]
>
> Using a patched povray, you could tesselate and save your objet in gts
> format.
> See http://jgrimbert.free.fr/pov/patch/tessel/index.html
> in particular gts_save
BTW, have you done (or planning to do) adapting that patch to POV-Ray 3.5
?
Christoph
--
POV-Ray tutorials, include files, Sim-POV,
HCR-Edit and more: http://www.tu-bs.de/~y0013390/
Last updated 28 Feb. 2003 _____./\/^>_*_<^\/\.______
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From: Le Forgeron
Subject: Re: Exporting POV objects to other 3D packages
Date: 30 Apr 2003 08:37:25
Message: <3EAFC452.80604@free.fr>
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Christoph Hormann wrote:
>
> Le Forgeron wrote:
>
>>[...]
>>
>>Using a patched povray, you could tesselate and save your objet in gts
>>format.
>>See http://jgrimbert.free.fr/pov/patch/tessel/index.html
>>in particular gts_save
>>
>
> BTW, have you done (or planning to do) adapting that patch to POV-Ray 3.5
> ?
No planning for 3.5 so far for me, but you're free to move it to 3.5 and
even to enhance it (using the functions of 3.5 is propably the most
interesting enhancement). Just beware of the marching-cube patent, if it
apply to you...
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From: Christoph Hormann
Subject: Re: Exporting POV objects to other 3D packages
Date: 30 Apr 2003 08:45:05
Message: <3EAFC550.9F239993@gmx.de>
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Le Forgeron wrote:
>
> [...]
>
> No planning for 3.5 so far for me, but you're free to move it to 3.5 and
> even to enhance it (using the functions of 3.5 is propably the most
> interesting enhancement).
It's quite high on my priority list but since it is quite a large patch it
will probably take some time...
> Just beware of the marching-cube patent, if it
> apply to you...
I know. The main problem seems that no one knows how broad these patents
are. It it's just about disabling one or two of the tesselation methods
that should not be a problem. If on the other hand the patent owners
could claim all grid based tesselation methods are covered this would
apply to all tesselation methods of that patch.
Christoph
--
POV-Ray tutorials, include files, Sim-POV,
HCR-Edit and more: http://www.tu-bs.de/~y0013390/
Last updated 28 Feb. 2003 _____./\/^>_*_<^\/\.______
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