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In article <cmbb0tk5fvv2rqgr9lkto2jgjs6on5r3t7@4ax.com>, Defective
<def### [at] home com> wrote:
> Anybody ever render a scene with expanded steel in it?
>
> I've been combining 2 of my favorite pasttimes. I'm trying to render
> images of the parts I'm building for my truck and I've got all the
> parts worked out except the expanded steel in my head rack...
>
> It's gotta be doable, I'm just lost...
First, this is the wrong newsgroup. This group is for messages about
programming, specifically the POV-Ray source code. Try povray.newusers,
povray.advanced-users. Also, read the messages in
povray.announce.frequently-asked-questions, especially "Welcome To the
POV-Ray News Groups" by Ken Tyler. I am following up to
povray.advanced-users.
About your question: are you talking about the sheet metal material that
is cut and then stretched open? I think your best bet would be either a
blob object or an isosurface. You might be able to get a reasonable
approximation of this shape by using cylinderical blob components. As
for the isosurface, it shouldn't be too difficult to make a function
that looks something like this shape, but it will require MegaPOV, an
unofficial "patched" version with many new features.
You also might be able to get something with an automatically generated
mesh, though I wouldn't want to try coding that...
If detail isn't very important, you could probably do it with a
partially transparent texture...
--
Christopher James Huff
Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tagpovrayorg, http://tag.povray.org/
<><
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> > Anybody ever render a scene with expanded steel in it?
Rhino 3D seems to nice job with car parts. Download their evaluation
version www.rhino3d.com and then find an utility that improves the
functionality of the product using astalavista.box.sk. Export to
pov and render.
______________________________________________________________________
Kari Kivisalo http://www.kivisalo.net
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On Mon, 06 Nov 2000 02:00:42 +0200, Kari Kivisalo <kar### [at] kivisalonet>
wrote:
>
>> > Anybody ever render a scene with expanded steel in it?
>
>Rhino 3D seems to nice job with car parts. Download their evaluation
>version www.rhino3d.com and then find an utility that improves the
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>functionality of the product using astalavista.box.sk. Export to
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
LOL, I like this definition. Bad Kari, bad! :))
>pov and render.
Peter Popov ICQ : 15002700
Personal e-mail : pet### [at] usanet
TAG e-mail : pet### [at] tagpovrayorg
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Chris Huff wrote:
>
> In article <cmbb0tk5fvv2rqgr9lkto2jgjs6on5r3t7@4ax.com>, Defective
> <def### [at] homecom> wrote:
>
> > Anybody ever render a scene with expanded steel in it?
> >
> > I've been combining 2 of my favorite pasttimes. I'm trying to
> > render images of the parts I'm building for my truck and I've got
> > all the parts worked out except the expanded steel in my head
> > rack...
> >
> > It's gotta be doable, I'm just lost...
>
> About your question: are you talking about the sheet metal material
> that is cut and then stretched open? I think your best bet would be
> either a blob object or an isosurface. You might be able to get a
> reasonable approximation of this shape by using cylinderical blob
> components. As for the isosurface, it shouldn't be too difficult to
> make a function that looks something like this shape, but it will
> require MegaPOV, an unofficial "patched" version with many new
> features.
>
> You also might be able to get something with an automatically
> generated mesh, though I wouldn't want to try coding that...
Actually, one mesh, copied a few times, would be far less memory-
intensive.
> If detail isn't very important, you could probably do it with a
> partially transparent texture...
A height field suggests itself as well.
Regards,
John
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On Sun, 05 Nov 2000 16:50:50 -0500, Chris Huff <chr### [at] maccom> wrote:
>In article <cmbb0tk5fvv2rqgr9lkto2jgjs6on5r3t7@4ax.com>, Defective
><def### [at] homecom> wrote:
>
>> Anybody ever render a scene with expanded steel in it?
>>
>> I've been combining 2 of my favorite pasttimes. I'm trying to render
>> images of the parts I'm building for my truck and I've got all the
>> parts worked out except the expanded steel in my head rack...
>>
>> It's gotta be doable, I'm just lost...
>
I have developed an isosurface that can be used to model a mesh and have posted
a test image in p.b.i. The source is in p.b.scene-files.
In this image I have used basically the same function for the brick surfaces,
the tiled floor and the mesh.
Recently I posted an image of a brick wall using a <sin> function to get the
periodicity, when Jerome Berger pointed out to me that the isosurface mod
function is <%>. Since then I have used the mod function to develop a more
versatile and simpler isosurface for embossed rectangular pattern surfaces
(i.e. brick walls :-). The diamond mesh just uses this embossing to go right
through a thin planar isosurface to produce a square mesh, that I then rotated
and squashed on one axis to give a reasonable approximation to expanded steel.
David
----------------------
dav### [at] hamiltonitecom
http://hamiltonite.com/
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