Hi,

Here's my fiirst bamboo-texture test. Any comments/suggestions?

Rob.

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Rings?

Rob Verweij wrote:


> Rob.

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On Sun, 10 Dec 2000 12:12:37 +0100, Rob Verweij wrote:

>Here's my fiirst bamboo-texture test. Any comments/suggestions?

That looks great, now all you need is a bamboo shape to go 
with it.  You might find some good bamboo objects in one of 
the scene files groups, thir textures are never any good but 
the sapes are.  

It'd be good if you could put your texture in a macro that 
recognises the length of an object so that it scales correctly
for bamboo poles of different lengths. 

The only reservation I'd have about using such a texture is 
that at a distance you probably won't see any of that intricate
detail, but you'd suffer the render time that'd go with it. 

Keep us posted. 

-- 
Cheers
Steve              email mailto:ste### [at] zeroppsuklinuxnet

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On Sun, 10 Dec 2000 08:37:54 -0500, Greg M. Johnson wrote:
>Rings?

Content-Type: text/plain; charset=x-user-defined 

Why?

-- 
Cheers
Steve              email mailto:ste### [at] zeroppsuklinuxnet

%HAV-A-NICEDAY Error not enough coffee  0 pps. 

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Well this particular Bamboo will be in a close-up shot so i need the
detail.

Rob.

Steve schreef:

> On Sun, 10 Dec 2000 12:12:37 +0100, Rob Verweij wrote:
>
> >Here's my fiirst bamboo-texture test. Any comments/suggestions?
>
> ...The only reservation I'd have about using such a texture is
> that at a distance you probably won't see any of that intricate
> detail, but you'd suffer the render time that'd go with it.
>
> Keep us posted.
>
> --
> Cheers
> Steve

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What do you mean? I don't have a "live specimen" of bamboo lying arround
so I did this from memory and as far as I now bamboo has no rings.

Rob.

"Greg M. Johnson" schreef:

> Rings?
>
> Rob Verweij wrote:
>
> > Hi,  Here's my fiirst bamboo-texture test. Any comments/suggestions?
> > Rob.

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In article <3A33CF91.5BD0CCE0@worldonline.nl>, Rob Verweij 
<rg.### [at] worldonlinenl> wrote:

> What do you mean? I don't have a "live specimen" of bamboo lying arround
> so I did this from memory and as far as I now bamboo has no rings.

I think he means the segments...
In case you don't know what *I* am talking about, bamboo is composed of 
many segments joined end to end. Your image appears to be a single 
segment of bamboo. The joints between segments make visible rings, which 
are nothing like the rings in wood.

-- 
Christopher James Huff
Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tagpovrayorg, http://tag.povray.org/

<><

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Yes, I figured he meant that but I couldn't find the right word for it:
segments (duh!) thanks for helping me out.
I have some difficulties on deciding what the best way of "modeling" is for
the segments. Texturing them is easy but "modeling" them isn't (well at least
for me it isn't). I thought I could do it by using a gradient bump map but
that doesn't look realistic. Well back to the drawingboard to figure out a way
to do the segments.

Thanx,

Rob.

Chris Huff schreef:

> In article <3A33CF91.5BD0CCE0@worldonline.nl>, Rob Verweij
> <rg.### [at] worldonlinenl> wrote:
>
> > What do you mean? I don't have a "live specimen" of bamboo lying arround
> > so I did this from memory and as far as I now bamboo has no rings.
>
> I think he means the segments...
> In case you don't know what *I* am talking about, bamboo is composed of
> many segments joined end to end. Your image appears to be a single
> segment of bamboo. The joints between segments make visible rings, which
> are nothing like the rings in wood.
>
> --
> Christopher James Huff
> Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
> TAG: chr### [at] tagpovrayorg, http://tag.povray.org/
>
> <><

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One way would be to make them using lathe objects. Or if you are
mathematically inclined you could use isosurfaces.

"Rob Verweij" <rg.### [at] worldonlinenl> wrote in message
news:3A3474B9.1A25890E@worldonline.nl...
> Yes, I figured he meant that but I couldn't find the right word for it:
> segments (duh!) thanks for helping me out.
> I have some difficulties on deciding what the best way of "modeling" is
for
> the segments. Texturing them is easy but "modeling" them isn't (well at
least
> for me it isn't). I thought I could do it by using a gradient bump map but
> that doesn't look realistic. Well back to the drawingboard to figure out a
way
> to do the segments.
>
> Thanx,
>
> Rob.
>
> Chris Huff schreef:
>
> > In article <3A33CF91.5BD0CCE0@worldonline.nl>, Rob Verweij
> > <rg.### [at] worldonlinenl> wrote:
> >
> > > What do you mean? I don't have a "live specimen" of bamboo lying
arround
> > > so I did this from memory and as far as I now bamboo has no rings.
> >
> > I think he means the segments...
> > In case you don't know what *I* am talking about, bamboo is composed of
> > many segments joined end to end. Your image appears to be a single
> > segment of bamboo. The joints between segments make visible rings, which
> > are nothing like the rings in wood.
> >
> > --
> > Christopher James Huff
> > Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
> > TAG: chr### [at] tagpovrayorg, http://tag.povray.org/
> >
> > <><
>

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"Rob Verweij" <rg.### [at] worldonlinenl> wrote in message
news:3A3474B9.1A25890E@worldonline.nl...
> I have some difficulties on deciding what the best way of "modeling" is for
> the segments. Texturing them is easy but "modeling" them isn't (well at least
> for me it isn't). I thought I could do it by using a gradient bump map but
> that doesn't look realistic. Well back to the drawingboard to figure out a
way
> to do the segments.

After seeing this thread on bamboo I thought I'd try it using some made-up
function in a isosurface.
I got as far as an undulating shape but nothing like actual bamboo so I moved
on to a simple CSG of cylinders and tori and that was better.  Then came the
while loop scaling and translating, no good yet.  And even if I ever get it
about right it would never have the imperfections of real bamboo as I was
hoping for by doing a isosurface of it.
I went so far as to try searching out a equation of such a shape... without any
luck of course.

Bob H.

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