> Awesome... shows me how long a way I still have to go! But how long did
> it take to render?
>

Rendered in 2min 14s at 512x384 on a 1.8GHz P4 (no antialiasing).
Antialiasing slows it down quite alot, depending on settings.
I think the version I posted took about 8min with +am1 +a0.3

Here is the code:

// Asteroid
#version 3.6;
// ==============================================================
#default{finish{ambient 0}}
#global_settings{assumed_gamma 1.0 max_trace_level 5}

#declare f_bozo1 = // similar to noise3d
function{
  pigment{
    bozo
    noise_generator 3
    scale 0.35
    turbulence 0.30
    color_map{
      [0 color rgb 0]
      [1 color rgb 1]
    }
  }
}

#declare f_craters =
function{
  pigment{
    crackle form <1.2, 0, 0> // never really played with this one, thaks
Yadgar!
    turbulence 0.1 omega 0.6
    scale 0.15
    color_map{
      [0.00 color rgb 1.00] // centre of crater, lowest part
      [0.25 color rgb 0.75]
      [0.33 color rgb 0.25]
      [0.40 color rgb 0] // crater rim
      [1.00 color rgb 0] // level of area outside the crater
    }
  }
}

#declare f_granite =
function{
  pigment{
    granite
    scale 0.08
    color_map{
      [0 color rgb 0]
      [0.5 color rgb 0]
      [1 color rgb 1]
    }
  }
}

// --------------------------------------------------------------
isosurface{
  function{
    (x*x)+(y*y*2.2)+(z*z*1.5)-1
    +f_bozo1(x,y,z).red*0.300
    +f_craters(x,y,z).red*0.030
    +f_craters(x*2,y*2,z*2).red*0.020
    +f_granite(x,y,z).red*0.01
  }
  contained_by{box{<-1, -1, -1>, <1, 1, 1>}}
  threshold 0
  accuracy 0.005
  max_gradient 7.5
  texture{
    pigment{color rgb 1}
    finish{diffuse 1 brilliance 2}
  }
}

light_source{<-10, 10, 5> color rgb 1.5}
light_source{< 10, -10, -5> color rgb<0.2, 0.5, 1.0>*0.15}

camera{
  location <0, 1, -4>
  up y*(image_height/image_width)
  right x
  sky y
  look_at <0, 0, 0>
  angle 36
}
// -------------------------------------------------- end of file

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> Ah, theatre organs... have you heard this: 
> http://www.hauptwerk.co.uk/AudioDemos/Hauptwerk2-MDAWurliTzer1.mp3 ?

Love it!  :-)

> Its from the famous Hauptwerk virtual organ project site... really 
> groovy sound, I just imagine Richard Rodgers' famous "Slaughter on Tenth 
> Avenue" being played on such an organ...

I do have an old, monophonic recording of George Wright playing 
Slaughter, but at the moment I don't recall what specific organ it was on.

I'm attaching a photo of myself at my (electronic) organ.  I have fun 
with this picture, it's surprising how many people don't "get it". 
(Hint, it's a paste-up -- two shots cut and pasted then recopied.  I did 
this long before I had a computer, let alone, any graphics editor.)

      -=- Larry -=-

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Attachments:
Download 'organ.jpg' (148 KB)

Preview of image 'organ.jpg'

Larry Hudson wrote:
> 
> I'm attaching a photo of myself at my (electronic) organ.  I have fun
> with this picture, it's surprising how many people don't "get it".
> (Hint, it's a paste-up -- two shots cut and pasted then recopied.  I did
> this long before I had a computer, let alone, any graphics editor.)


could also be 1.

-- 
Eero "Aero" Ahonen
   http://www.zbxt.net
      aer### [at] removethiszbxtnetinvalid

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just followed this thread for a while, and as I'd a little time
yesterday evening, I played around with different layers and came up
with this one.

Still some texture issues. Maybe I'll try to add some normals as well.

...dave



> High!
> 
> Several days have passed, and I tried to improve the appearance of my
> asteroidal moon, mostly be applying additional 3D noise to the surface
> (in the case of the image attached here, by replacing the original
> noise_3d(x, y, z) by noise_3d(pow(x, 3), pow(y, 3), pow(z, 3)), which in
> fact added subtle waves to the terrain relief).
> 
> But still the problem is, that with the crackle pattern (with form set
> to <n, 0, 0>), the craters are in fact "bubbles" of empty space
> distributed randomly inside the raw isosurface moon body and not
> necessarily cut in half by its surface, so that many craters still are
> gaping holes rather than shallow depressions.
> 
> How can I get rid of this? Is there something like UV mapping for
> isosurfaces which guarantees that only craters cut in half by the
> surface are generated?
> 
> Is it possible to write a "core function" which, on the x-y plane,
> generates a roughly symmetric (perhaps slightly turbulated)
> cross-section of a crater, with terraced walls, a rim higher than the
> surrounding terrain and even a central peak, which then is transferred
> to a circular structure by applying trigonometric functions (?), which
> in turn are distributed randomly (also with random variations in depth,
> diameter, terracing and height of central peak) across the existing
> asteroid surface?
> 
> Where can I find the mathematical resources to design such a function?
> 
> See you in Khyberspace!
> 
> Yadgar
> 
> Now playing: Pirates of Love (Zara)
> 
> 
> ------------------------------------------------------------------------
>

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Attachments:
Download 'asteroid_01_800x600.jpg' (42 KB)

Preview of image 'asteroid_01_800x600.jpg'

Larry Hudson <org### [at] yahoocom> wrote:
> I'm attaching a photo of myself at my (electronic) organ.  I have fun
> with this picture, it's surprising how many people don't "get it".
> (Hint, it's a paste-up -- two shots cut and pasted then recopied.  I did
> this long before I had a computer, let alone, any graphics editor.)
>
>       -=- Larry -=-

WOW!  I bet you're a great drummer too!  I can hear some pretty complex
syncopation with three hands!

RG

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High!

Larry Hudson wrote:

> I'm attaching a photo of myself at my (electronic) organ.  I have fun 
> with this picture, it's surprising how many people don't "get it". 
> (Hint, it's a paste-up -- two shots cut and pasted then recopied.  I did 
> this long before I had a computer, let alone, any graphics editor.)

...but the third manual is real, isn't it? What brand is it - a Baldwin 
or a Wurlitzer?

See you in Khyberspace!

Yadgar

Now playing: Underpass (John Foxx)

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> High!
> 
> Larry Hudson wrote:
> 
>> I'm attaching a photo of myself at my (electronic) organ.  I have fun 
>> with this picture, it's surprising how many people don't "get it". 
>> (Hint, it's a paste-up -- two shots cut and pasted then recopied.  I 
>> did this long before I had a computer, let alone, any graphics editor.)
> 
> 
> ...but the third manual is real, isn't it? What brand is it - a Baldwin 
> or a Wurlitzer?
> 
> See you in Khyberspace!
> 
> Yadgar
> 
> Now playing: Underpass (John Foxx)

Yes it is a real three-manual organ.  An uncommon make -- Artisan. 
Believe it or not, it was a kit, and I built myself.  It was a two to 
three year project, because you could buy it a piece at a time.  The 
console was complete, but I did all the electronics and wiring in it. 
Unfortunately, this brand is no longer available.  But it _was_ a fun 
project.

      -=- Larry -=-

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High!

Larry Hudson wrote:

> Yes it is a real three-manual organ.  An uncommon make -- Artisan. 
> Believe it or not, it was a kit, and I built myself.  It was a two to 
> three year project, because you could buy it a piece at a time.

Artisan - never heard of it! But organ kits are familiar to me, as here 
in Germany, from the 60s to the early 80s they were also pretty common - 
perhaps you have heard of the German organ kit companies Wersi and Dr. 

teens - but instead decided to buy me a Commodore 64 rather than a Wersi 
Orion kit!

Wersi still exists, but now they sell only ready-made (and very 
expensive) organs, as nowadays except for some analogue organ fanatics 
nobodys want to take on year-long construction work in the hobby 
basement room!

   The
> console was complete, but I did all the electronics and wiring in it. 
> Unfortunately, this brand is no longer available.  But it _was_ a fun 
> project.

With Hammond-like drawbars or more theatre-style?

As I just mentioned analogue organ fanatics - there exists a forum 
dedicated to analogue electr(on)ic organs from Hammond's A series to 
mid-80s semi-digital Technicses and Yamahas: http://www.analogorgel.de - 
it's mostly German-spoken, but speakers of English are equally welcome, 
we also have an English sub-forum!

Perhaps we can meet there and talk organs...

See you in Khyberspace!

Yadgar

Now playing: One Vision (Queen)

Post a reply to this message

> High!
> 
> Larry Hudson wrote:
> 
>> Yes it is a real three-manual organ.  An uncommon make -- Artisan. 
>> Believe it or not, it was a kit, and I built myself.  It was a two to 
>> three year project, because you could buy it a piece at a time.
> 
> Artisan - never heard of it! But organ kits are familiar to me, as here 
> in Germany, from the 60s to the early 80s they were also pretty common -

It was a pretty small company, located in Pasadena, California -- about 
70 miles from where I live, Ventura.  (Actually, it was Altadena, which 
is "next door" to Pasadena.)

> perhaps you have heard of the German organ kit companies Wersi and Dr. 

> teens - but instead decided to buy me a Commodore 64 rather than a Wersi 
> Orion kit!

I seem to recall hearing the Wersi name, but I'm not familiar with them. 
  As to organs vs computers, after I got the computer bug I've kinda let 
the organ go.  I rarely touch it anymore, and I never was able to play 
very well anyway.  (What's more, right now it's BADLY out of tune.) 
:-(   Still love to listen to them, of course.

My first computer was an Altair (remember them?).  That's the one that 
first really started the PC "revolution".  Of course, they weren't 
called PCs back then.  The Altair was first described in the January 
1975 issue of Popular Electronics magazine.  I got mine around September 
or October that year.  (It had all of 1K of memory!)

>> console was complete, but I did all the electronics and wiring in it. 
>> Unfortunately, this brand is no longer available.  But it _was_ a fun 
>> project.
> 
> 
> With Hammond-like drawbars or more theatre-style?

Definitely theater-style, but with classic-style voicing instead.
Personally, I've always disliked the Hammond drawbar sound.  As I 
mentioned earlier, my main interest is pipe organs, so I only like 
electronic organs that try to simulate pipes.  Hammonds have their own 
unique sound which doesn't appeal to me.  I do like synthesizers though, 
but they're an entirely different class of instrument.  One unsual 
recording I have is the COMPLETE Ravel Bolero on synthesizer. 
Fascinating.  (And somewhat amusing because it ends with synthesized 
audience applause, complete with whistling and such.)   :-)

> As I just mentioned analogue organ fanatics - there exists a forum 
> dedicated to analogue electr(on)ic organs from Hammond's A series to 
> mid-80s semi-digital Technicses and Yamahas: http://www.analogorgel.de - 
> it's mostly German-spoken, but speakers of English are equally welcome, 
> we also have an English sub-forum!
> 
> Perhaps we can meet there and talk organs...

Hmmm...  I might check it out.  Also, I think this thread should be 
moved to the povray off-topic as well.  But so far, I've never bothered 
with reading that group.  Let me know if you want to continue there, and 
I will start looking into the OT group.

> See you in Khyberspace!
> 
> Yadgar
> 
> Now playing: One Vision (Queen)

      -=- Larry -=-

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I have a Technics SXU-90 I have to say goodbye to.  Do you want it?
email me : Pau### [at] brisbaneqldgovau

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