"Thomas de Groot" <tDOTdegroot@interDOTnlANOTHERDOTnet> wrote:
> "alphaQuad" <alp### [at] earthlinknet> schreef in bericht
> news:web.495c4aa8877dfbf3722e572a0@news.povray.org...
> >
> > Yah must have got cut or hurt on the erector set a few times.
> > Lincoln Logs would be easy CSG for a log cabin.
> >
> > Airy new age can't compare to Nostalgia Factor. Everything was so right,
> > once
> > upon a time ...
> >
>
> ...and with each day passing the nostalgia grows    :-)
>
> Don't forget Meat Loaf's undying words: "Don't worry about the future, soon
> it will be the past" (or something like that)
>
> Thomas

Here's my important MOTD. Not only do you need a copy of mIRC to run my scripts,
but on undernet there is #mp3download. mIRC gives you DCC communication and file
resume. If you every get one tune in your life this would be it:


Coldplay-TheStringQuartetTributetoColdplay-07-Everything'sNotLost.mp3

Forget about joint stereo low bit rates under 192. This one seems to be an
exception on the bit rate for being real harmony:

Artist = Coldplay
Album = TheStringQuartetTributetoColdplay
Track = 07
Title = Everything'sNotLost
Length = 5m21s
Bitrate = 128
Mode = Stereo
Version = MPEG 1.0 Layer 3
Sample = 44100
FileSize = 5150720

Gonna have to buy the CD now.

aQ

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On 31-Dec-08 22:39, stbenge wrote:
> The loop is the engine, sin/cos are two parts of a gear, 
> and pi is the number of teeth. 

I wanna see that wheel with pi teeth. Can you render one?

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Larry Hudson nous illumina en ce 2008-12-31 21:44 -->
> Eero Ahonen wrote:
>> Larry Hudson wrote:
>>
>>> I was born in '37 so I'm also a grumbling old man (more of a curmudgeon
>>> actually).   ;-)   So my childhood was also pre-plastics.  My equivalent
>>> nostalgia is for (all metal) Erector Sets.
>>
>>
>> I have a strange feeling that that name would be considered somewhat
>> weird and/or unsuitable for children's set.
>>
> LOL
> 
> Nevertheless, "Erector Sets" as they were called, were very well known 
> and popular toy construction sets at that time (late 40's, early 50's or 
> so).  I had great fun with mine -- a mid-range set.  Always dreamed of 
> having their biggest set, but could never afford it -- or rather, my 
> parents couldn't.  ;-)  Of course, earlier than this were the all-wood 
> Tinker Toys, also very well-known and popular at the time.
> 
> Tinker Toys consisted of a bunch of wooden wheels and rods (dowels) of 
> various lengths.  I don't remember any other shapes, but there might 
> have been.  The wheels had a hole in their center and eight more around 
> the rim where the rods could be inserted to connect them.  The ends of 
> the rods had a slight taper and a narrow slit.  This slit gave tnem a 
> slight springiness, and could also take other things like strings as 
> additional ways of connecting them.
> 
> Going by my very imperfect memory, they looked somewhat like the 
> attached picture.
> 
> Tinkey Toys were more for toddlers and Erector Sets more for "budding 
> engineers"  ;-)  Of course, sadly, these days something like an original 
> Erector Set could never make it to market -- too dangerous.  Lots of 
> nuts and bolts and stuff that could be swallowed, and the pieces were 
> thin sheet metal which could cut or poke an eye.  I really pity the 
> current younger generation for being so coddled and overprotected.  "In 
> my day", sure we got hurt, but that was just a normal part of growing 
> up.  And we learned a lot on the way.
> 
>      -=- Larry -=-
> 
> ------------------------------------------------------------------------
> 
Let see those that I played with...

Lego (still have)
Meccano (still have)
Milibricks (somewhat rubbery red, and only red, bricks)
Northern Log (100% wood)
Thinker Toy (still have some pieces...)
One with some very large blocks made out of granular styro foam. Don't remember 
the name. Prety fragil.
A building set, with a pump, pipes and several transparent thanks. Not sure of 
the name. The pieces looked like red steel columns and beams, there where 
translucent, printed "plates" looking like industrial walls.

-- 
Alain
-------------------------------------------------
Fix reason firmly in her seat, and call to her tribunal every fact, every
opinion. Question with boldness even the existence of a God; because, if
there be one, he must more approve of the homage of reason, than that of
blindfolded fear.
Thomas Jefferson

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andrel <a_l### [at] hotmailcom> wrote:
> On 31-Dec-08 22:39, stbenge wrote:
> > The loop is the engine, sin/cos are two parts of a gear,
> > and pi is the number of teeth.
>
> I wanna see that wheel with pi teeth. Can you render one?

Should be a piece of pie... erm, I mean, piece of cake :)

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andrel wrote:
> On 31-Dec-08 22:39, stbenge wrote:
>> The loop is the engine, sin/cos are two parts of a gear, and pi is the 
>> number of teeth. 

Maybe my metaphor isn't entirely accurate...

> I wanna see that wheel with pi teeth. Can you render one?

Sure! I'm going to assume you aren't actually asking for a visual pun. 
Here is some code I put together:

#macro gear(gRad, gInset, nTeeth, pThick)
  //gRad		gear radius
  //gInset	teeth depth (from radius)
  //nTeeth	number of teeth
  //pThick	prism thickness
  #local nPoints = 4*nTeeth;
  #local tooth = pi*2/nPoints;
  prism{
   -pThick,pThick,nPoints
   #local V = 0;
   #while(V<nPoints)
    #local rV = (gRad-gInset/2)+cos(tooth*V*nTeeth+pi/4)*gInset/2;
    <sin(tooth*V)*rV, cos(tooth*V)*rV>
    #local V = V + 1;
   #end
   rotate y*180/nPoints
  }
#end

object{
  gear(1,.1, 30, .1)
  pigment{rgb 1}
}

It's just your basic gear, nothing fancy.

Sam

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Attachments:
Download 'gear.png' (3 KB)

Preview of image 'gear.png'

On 02-Jan-09 9:59, stbenge wrote:
> andrel wrote:
>> On 31-Dec-08 22:39, stbenge wrote:
>>> The loop is the engine, sin/cos are two parts of a gear, and pi is 
>>> the number of teeth. 
> 
> Maybe my metaphor isn't entirely accurate...
> 
>> I wanna see that wheel with pi teeth. Can you render one?
> 
> Sure! I'm going to assume you aren't actually asking for a visual pun. 

Why on earth would you do that?

> Here is some code I put together:

But thanks anyway.

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Larry Hudson <org### [at] yahoocom> wrote:
> Eero Ahonen wrote:
> > Though I wouldn't consider raytracing as geeky hobby. I think it's more
> > mathematical hobby.
>
> I would say that math as a hobby is pretty geeky.    ;-)
>
>       -=- Larry -=-

Yes.  I would consider math more as a habit for myself.  People at work must
think I'm odd scribbling away trig and geometry equations on paper all the time
when I'm trying to work out some CSG postioning and such.

-tgq

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Nice image alphaQuad!  I'll have to dig and see if I have that model still.  It
is always great to see more LEGO/POV-Ray renders.

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"Larry Hudson" <org### [at] yahoocom> wrote in message 
news:495c2f1d$1@news.povray.org...
> I would say that math as a hobby is pretty geeky.    ;-)

yes .... but it (math) explains so many things. the universal language 
right?

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Jim Holsenback wrote:
> yes .... but it (math) explains so many things. the universal language 
> right? 

Actually, math explains nothing, which is why it's the universal language. :-)

-- 
   Darren New, San Diego CA, USA (PST)
   The NFL should go international. I'd pay to
   see the Detroit Lions vs the Roman Catholics.

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