Thanks!  I agree about the gears - these were only meant as
placeholders, but when it came to making "real" ones, I found I had no
idea what actual cogs really look like in detail!  Maybe it's time to
take apart some clocks...


"Slime" <slm### [at] slimelandcom> wrote in message
news:3dadd8f4$1@news.povray.org...
> The colors are brilliant! I like. The gears seem a little strangely
shaped,
> though; it's obvious the ridges were made by cutting cylinders out of
them.
>
>  - Slime
> [ http://www.slimeland.com/ ]
>
>

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"Andrew" <ast### [at] hotmailcom> wrote in message
news:3dadd536@news.povray.org...
> I was reading about Moebius strips on Mathworld
> (http://mathworld.wolfram.com/), and I was rather taken with the
> animation on the page.  Here's my take on the construction.
>

Neato. Perhaps gear-mess.zip may help

http://www.wozzeck.net/images/gear-mess.html

There's also a gear macro around, for pov 3.0 but not a problem for
3.1+ I believe. I have it archived around somewhere if you want.

Small brass clock type gears usualy have a brushed satin finish on
them. Would make yours look even better :)

Alf

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> I was reading about Moebius strips on Mathworld
> (http://mathworld.wolfram.com/), and I was rather taken with the
> animation on the page.  Here's my take on the construction.
> 
> Render time was ~2 hours @ 1280x960 on a 2GHz Athlon.  Needless to say
> an animation may be a while coming...

However, you'd only need to do 1/20th of a rotation and loop it...

Jamie.

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Hope this help.. just a quick 'thing'.. :)

--
FD
Mode { NOSPAM } = On ;

// Begin copy
#declare Gear =
object {
  union {

    // Main
    difference {
      cylinder { <0,0,-0.2> <0,0,0.2> 0.5 }
      cylinder { <0,0,-1.0> <0,0,1.0> 0.15 }
      cylinder { <0,0,-1.0> <0,0,-0.1> 0.36 }
      cylinder { <0,0,0.1> <0,0,1> 0.36 }
      cylinder { <0,0,-1> <0,0,-0.14> 0.4 }
      cylinder { <0,0,0.14> <0,0,1> 0.4 }
      torus { 0.36,0.04 rotate <90,0,0> translate <0,0,-0.14> }
      torus { 0.36,0.04 rotate <90,0,0> translate <0,0,0.14> }
      }

    // Axle
    difference {
      cylinder { <0,0,-0.2> <0,0,0.2> 0.2 }
      cylinder { <0,0,-1.0> <0,0,1.0> 0.1 }
      box { <-0.04,0,-1> <0.04,0.11,1> }
      }
    difference {
      cylinder { <0,0,-0.14> <0,0,0.14> 0.24 }
      cylinder { <0,0,-1> <0,0,1> 0.15 }
      torus { 0.24,0.04 rotate <90,0,0> translate <0,0,-0.14> }
      torus { 0.24,0.04 rotate <90,0,0> translate <0,0,0.14> }
      }

    // Dents
    #declare Rotation = 360 ;
    #while ( Rotation > 0 )
      difference {
        intersection {
          cylinder { <0,0,-0.3> <0,0,0.3> 0.15 translate
<-0.11,0.46,0> }
          cylinder { <0,0,-0.3> <0,0,0.3> 0.15 translate <0.11,0.46,0> }
          cylinder { <0,0,-0.2> <0,0,0.2> 0.54 }
          }
        cylinder { <0,0,-1> <0,0,1> 0.48 }
        rotate <0,0,Rotation>
        }
      #declare Rotation = Rotation - 12 ;
    #end
    }
  texture { // your texture here.. mine's no good... :)
    pigment { color Gold }
    normal { bumps 0.2 scale 0.2 }
    finish { metallic reflection 0.05 }
    }
  }
// End copy

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Attachments:
Download 'gear.jpg' (26 KB)

Preview of image 'gear.jpg'

"Andrew" <ast### [at] hotmailcom> wrote in message
news:3daeb4f7@news.povray.org...
> Thanks!  I agree about the gears - these were only meant as
> placeholders, but when it came to making "real" ones, I found I had no
> idea what actual cogs really look like in detail!  Maybe it's time to
> take apart some clocks...
>

I've just seen a nice looking gear in the pov-ray objects collection in the
engineering category.

jim

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This image has a very nice feel to it. It's very artistic. :)

However, shouldn't the shape of the gears be constructed to match both
the bending and twisting? (See attached image to see what I mean.)

Rune
--
3D images and anims, include files, tutorials and more:
rune|vision:  http://runevision.com (updated Sep 8)
POV-Ray Ring: http://webring.povray.co.uk

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Attachments:
Download 'gears.jpg' (10 KB)

Preview of image 'gears.jpg'

"Rune" <run### [at] mobilixnetdk> wrote in message
news:3db003ab@news.povray.org...
> This image has a very nice feel to it. It's very artistic. :)
>
> However, shouldn't the shape of the gears be constructed to match both
> the bending and twisting? (See attached image to see what I mean.)

    Oh man... I see a run of gear images coming... I love it.

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Except that the textures won't match up :(


"Jamie Davison" <jam### [at] ntlworldcom> wrote in message
news:MPG.18191e93c52ba27e989bf3@news.povray.org...
> > I was reading about Moebius strips on Mathworld
> > (http://mathworld.wolfram.com/), and I was rather taken with the
> > animation on the page.  Here's my take on the construction.
> >
> > Render time was ~2 hours @ 1280x960 on a 2GHz Athlon.  Needless to
say
> > an animation may be a while coming...
>
> However, you'd only need to do 1/20th of a rotation and loop it...
>
> Jamie.

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Great stuff!  I'll see if I can alter my gears over the weekend.


"Rune" <run### [at] mobilixnetdk> wrote in message
news:3db003ab@news.povray.org...
> This image has a very nice feel to it. It's very artistic. :)
>
> However, shouldn't the shape of the gears be constructed to match both
> the bending and twisting? (See attached image to see what I mean.)
>
> Rune
> --
> 3D images and anims, include files, tutorials and more:
> rune|vision:  http://runevision.com (updated Sep 8)
> POV-Ray Ring: http://webring.povray.co.uk
>
>
>

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In article <3db04e7f$2@news.povray.org>, ast### [at] hotmailcom 
says...
> Except that the textures won't match up :(

Change the texture so that it will loop?  Removing the normal you have 
would seem to work, as I assume it's just a reflective pigment 
(metallic?)

That'd be my choice if i was going to do a small test animation before 
putting the original textures back in and doing a full 36) rotation 
anim...

Jamie.

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