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From: Chris Colefax
Subject: Basket-weaving (fun with spline objects)
Date: 22 Oct 2000 23:39:26
Message: <39f3b2ee@news.povray.org>
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Created as a sample for my Spline Macro file
(http://www.geocities.com/ccolefax/spline), using the built-in spline
objects (no, they're not sphere sweeps...)
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The basket looks great, nice work!
...and
I hate to nit-pick, but I circled some spots that look like they
might be mistakes. The section in green looks like it might be a
joining area, possibly you intended this. The sections in red looks
to me like the horizontal part that's supposed to weave under the
verticle part is actually going through or on top.
(verticle part, horizontal part-- I guess I'm a little rusty on my
basket weaving tech lingo)
--
Phil
...coffee?...yes please! extra sugar,extra cream...Thank you.
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"Chris Colefax" <chr### [at] tag povrayorg> wrote in message
news:39f3b2ee@news.povray.org...
> Created as a sample for my Spline Macro file
You gotta be kidding me! This is too cool... all the available stuff for
pov-ray is getting way beyond me.
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From: Tony[B]
Subject: Re: Basket-weaving (fun with spline objects)
Date: 23 Oct 2000 02:05:47
Message: <39f3d53b@news.povray.org>
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Wow... :) No one can handle a spline like you, sir.
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Chris Colefax wrote:
>
> Created as a sample for my Spline Macro file
> (http://www.geocities.com/ccolefax/spline), using the built-in spline
> objects (no, they're not sphere sweeps...)
>
> [Image]
I like it, also the lighting is nice, although there seem to be some
inconsistences like those Phil mentioned and no overlapping in the center.
I wonder whether similar things would be possible as an isosurface, one could
take the "mesh1" function as a basis...
Christoph
--
Christoph Hormann <chr### [at] gmxde>
Homepage: http://www.schunter.etc.tu-bs.de/~chris/
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From: Bill DeWitt
Subject: Isosurface (was Re: Basket-weaving (fun with spline objects))
Date: 23 Oct 2000 13:58:53
Message: <39f47c5d@news.povray.org>
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"Christoph Hormann" <Chr### [at] schunteretctu-bsde> wrote :
>
> I wonder whether similar things would be possible as an isosurface, one
could
> take the "mesh1" function as a basis...
I like to think that -anything- can be done with isosurface if one can
figure out the formula. I cannot figure out anything but the basics, and
some random thrashing around with those. But I am still struggling with an
isosurface tree. So far I haven't even been able to reach my first goal, a
"Y"...
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Bill DeWitt wrote:
>
> I like to think that -anything- can be done with isosurface if one can
> figure out the formula. I cannot figure out anything but the basics, and
> some random thrashing around with those. But I am still struggling with an
> isosurface tree. So far I haven't even been able to reach my first goal, a
> "Y"...
:-)
I just wrote some thoughts i had, maybe i will try it out myself sometime, it
should really be more simple than a realistic tree ...
Christoph
--
Christoph Hormann <chr### [at] gmxde>
Homepage: http://www.schunter.etc.tu-bs.de/~chris/
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From: Greg M Johnson
Subject: Re: Isosurface (was Re: Basket-weaving (fun with spline objects))
Date: 24 Oct 2000 10:09:49
Message: <39f5982d@news.povray.org>
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Bill DeWitt wrote:
> But I am still struggling with an
> isosurface tree.
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From: Bill DeWitt
Subject: Re: Isosurface (was Re: Basket-weaving (fun with spline objects))
Date: 24 Oct 2000 12:31:03
Message: <39f5b947$1@news.povray.org>
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"Greg M. Johnson" <"gregj;-()"@aol.c;-()om> wrote in message
news:39f5982d@news.povray.org...
>
>
> Bill DeWitt wrote:
>
> > But I am still struggling with an
> > isosurface tree.
>
> Did you see my example at p.b.i.:
Yes I did, but I was thinking of working from the trunk out, yours seems
to model the outer leaves only.... or do I misunderstand it?
I want to make a branching shape that I can then put leaves on. I
suspect that it can be done, but I haven't been able to get anywhere with it
at all.
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In article <39f5b947$1@news.povray.org>, "Bill DeWitt"
<the### [at] earthlinknet> wrote:
> I want to make a branching shape that I can then put leaves on. I
> suspect that it can be done, but I haven't been able to get anywhere
> with it at all.
I whipped up this isosurface tree in about 20 minutes...but I cheated.
:-)
I made a fractal blob, then used the blob pattern in a pigment in a
pigment function, and called that function from the isosurface. Not too
slow...and it still has many of the benefits of isosurfaces.
I don't think you are going to get a realistic looking, complex plant
out of an ordinary function...it would certainly be possible, but the
function would probably be horribly complex, inflexible, and slow
rendering. Maybe if you designed some new pattern and used that in the
isosurface...
You can get some odd branch-like structures that look fairly natural
from a distance pretty easily, just by displacing a sphere with a
pigment. Not exactly a tree though...
--
Christopher James Huff
Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tagpovrayorg, http://tag.povray.org/
<><
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