Hello everyone! Some of you 'old hats' out there might remember how on 
my old (and quite outdated) isosurface tutorial I mentioned a future 
topic I planned on discussing: smooth dividing. Unfortunately I never 
got around to making that section, and by the time POV-Ray 3.5 came out 
with its support for the isosurface object it was too late. The syntax 
for the isosurface had changed, and out the door flew the ^hat operator. 
I could never get pow to work correctly.

Well, today while playing with blobbing functions I taught myself once 
again the nifty trick for organic isosurface modeling. The whole idea 
behind this technique is to take an isosurface object and put creases 
into its surface, with total control over the threshold. This allows a 
person to make organic shapes more easily than with other methods.

Here's an example of what I'm talking about:

function{
  (sqrt(x*x+y*y+z*z)-1) // starting shape
  *abs(x)               // makes a x-oriented straight crease
  +.01                  // threshold value
}

Please forgive me if this has been done before. I've checked the POV-Ray 
docs and Mike Willams' tutorial and didn't see this technique in either. 
  Does anyone think this is useful? Should I make a tutorial or 
something? It renders quickly, and the image shown here uses default 
isosurface settings.

-- 
Samuel Benge

stb### [at] hotmailcom
See my website@: http://www.goldrush.com/~abenge/Top/index.html


-- 
Samuel Benge

stb### [at] hotmailcom
See my website@: http://www.goldrush.com/~abenge/Top/index.html

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Attachments:
Download 'smooth.jpg' (21 KB)

Preview of image 'smooth.jpg'

"Samuel Benge" <sbe### [at] hotmailcom> wrote in message
news:3FC### [at] hotmailcom...
...
>   Does anyone think this is useful? Should I make a tutorial or
> something? It renders quickly, and the image shown here uses default
> isosurface settings.
>


I can't speak for everyone else, but I think it would be useful.  It would
be useful to me.  I haven't seen anything like this done before, but I've
only been POVing for a year and a half now...

-- 
Jeremy

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Jeremy M. Praay wrote:
 >
 > I can't speak for everyone else, but I think it would be useful.
 > It would  be useful to me.

Okay. I'll write a little bit more about it to povray.text.scene-files. 
Look for it soon.

 >I haven't seen anything like this done before, but I've
 > only been POVing for a year and a half now...

My tutorial has been around longer than that.... I was surprised to find 
it recently doing a Google search. There's still someone out there in 
Linux land hosting most of it.



-- 
Samuel Benge

stb### [at] hotmailcom
See my website@: http://www.goldrush.com/~abenge/Top/index.html

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I think it might be useful for me!

...and maybe it will help soften up a splitting headache whenever I might
have one...

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I'd like to see that <grin>.

Apache wrote:

> I think it might be useful for me!
> 
> ...and maybe it will help soften up a splitting headache whenever I might
> have one...
> 
> 
> 


-- 
Samuel Benge

stb### [at] hotmailcom
See my website@: http://www.goldrush.com/~abenge/Top/index.html

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