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I'm hoping someone will give me a nudge in a useful direction to help me
build an object. I'm visualizing a plane which I want to deform with some
smooth wavy curves. I can probably generate some mathmatical relationships
between the curves, but it's kinda a free-form design at the moment. I'm
just not sure where to start.
The intended result is to be the front of a cabinet with five drawers in it
(XY plane) where each drawer is a different wavy curve in the X direction
and the drawers blend in together in the Y direction. Nominally, the rest of
the cabinet would be square/rectangular, but if this is too easy, perhaps
the sides would be curved as well. Nominal dimensions would be a couple of
feet in all directions for the cabinet and the drawer fronts would be cut
from solid wood of a couple inches thick, so the curves are quite gentle.
Most of my work with objects has been CSG, so I'm looking to move forward.
As yet I haven't learned blobs or height fields, nor do I use any modeler
tool other than POVRay, so I'm looking for the place to spend some learning
time. If some other tool is the right choice to predefine the plane for
input to POVRay, then that's fine too.
I'm a happy POV'er and also a hobby woodworker, therefore I love the
woodgrain textures in POVRay. I find that modeling an object first reduces
the amount of do-overs in the shop considerably.
Thanks in advance
Stephen
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"Stephen" <pen### [at] shaw ca> wrote in message
news:406cd630$1@news.povray.org...
Sounds like you need an iso-surface - can you post an image of some sort of what
you're after (to binaries.images), or provide a link?
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Tom Melly nous apporta ses lumieres ainsi en ce 2004/04/02 03:16... :
>"Stephen" <pen### [at] shawca> wrote in message
>news:406cd630$1@news.povray.org...
>
>
>Sounds like you need an iso-surface - can you post an image of some sort of what
>you're after (to binaries.images), or provide a link?
>
>
>
>
Or a height field along the Z axis. Scaled the right size and with
smooth on.
Alain
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"Alain" <aze### [at] qwertygov> wrote in message
news:406d4839$1@news.povray.org...
> Tom Melly nous apporta ses lumieres ainsi en ce 2004/04/02 03:16... :
>
> >"Stephen" <pen### [at] shawca> wrote in message
> >news:406cd630$1@news.povray.org...
> >
> >
> >Sounds like you need an iso-surface - can you post an image of some sort
of what
> >you're after (to binaries.images), or provide a link?
> >
> >
> >
> >
> Or a height field along the Z axis. Scaled the right size and with
> smooth on.
>
> Alain
A height field would probably be a better choice for someone first
experimenting with either. Though it has an extra step of rendering a height
field and then using the resulting image in your final render, it is still
generally faster. Also, if you want to move to an isosurface for quality
reasons later on, can't you just use the pigments used to generate the
height field as a function for your isosurface when the time comes?
-ross
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In article <406d8f00$1@news.povray.org>,
"Ross Litscher" <rli### [at] everestkcnet> wrote:
> A height field would probably be a better choice for someone first
> experimenting with either. Though it has an extra step of rendering a height
> field and then using the resulting image in your final render, it is still
> generally faster. Also, if you want to move to an isosurface for quality
> reasons later on, can't you just use the pigments used to generate the
> height field as a function for your isosurface when the time comes?
You do not need to generate a separate image first, you can have POV-Ray
generate a function image at parse time. However, you will then have to
deal with the height field artifacts. Neither one is really any simpler.
Either generate a separate image or specify a height function and use a
height field, or specify a height function or some more complex function
and use an isosurface. The height field will be a bit faster, the
isosurface will use much less memory and look better, besides being more
versatile in the shapes it can produce.
--
Christopher James Huff <cja### [at] earthlinknet>
http://home.earthlink.net/~cjameshuff/
POV-Ray TAG: <chr### [at] tagpovrayorg>
http://tag.povray.org/
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