I like glass objects but I don't usualy have the patience to finish
them. This Dragonfly started over 2 years ago and was resurrected when
I tried megapov and photons.

<moan>
Wanted a yellow tail but caustics were too weak. Did not want a white
plane but anything else hides the caustics again :(
Still too many black pixels, even with max_trace_level 85, but AA 0.01
gets rid of most of them at this resolution. ADC_bailout does'nt help
much even at 0.05
</moan>
DOS MegaPov 0.4, Celery 500, 128M ram and took 72 minuits.

Alf

http://www.peake42.freeserve.co.uk/
http://ourworld.compuserve.com/homepages/Alf_Peake/
"...but I've never seen an elephant fly" tra-la-la (From Dumbo?)

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Attachments:
Download 'Dragonfly.jpg' (39 KB)

Preview of image 'Dragonfly.jpg'

Alf Peake wrote:

> I like glass objects but I don't usualy have the patience to finish
> them. This Dragonfly started over 2 years ago and was resurrected when
> I tried megapov and photons.
>
> <moan>
> Wanted a yellow tail but caustics were too weak. Did not want a white
> plane but anything else hides the caustics again :(
> Still too many black pixels, even with max_trace_level 85, but AA 0.01
> gets rid of most of them at this resolution. ADC_bailout does'nt help
> much even at 0.05
> </moan>
> DOS MegaPov 0.4, Celery 500, 128M ram and took 72 minuits.

Nice !

I like the red glass a lot. What's the code for it ?

And how are the wings done ?

There seems to be some problems with the attachment of the
rear wings to the body.


Tor Olav
--
mailto:tor### [at] hotmailcom
http://www.crosswinds.net/~tok/tokrays.html

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Phantastic! :-)

--
David Fontaine   <dav### [at] faricynet>   ICQ 55354965
Please visit my website:  http://davidf.faricy.net/

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Looks like that gummy jelly stuff, yummy


--
Rick
Kitty5 WebDesign - http://www.kitty5.com
TEL - +44 (01625) 266358 : FAX +44 (01625) 611913

PGP Public Key
http://pgpkeys.mit.edu:11371/pks/lookup?op=get&search=0x55116DCC

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I posted 3 replies to this thread on 25/8 but can not see them here.
Can anyone else see them please?

Alf


Alf Peake <alf### [at] peake42freeservecouk> wrote in message
news:39a44922@news.povray.org...
> I like glass objects but I don't usualy have the patience to finish
> them. This Dragonfly started over 2 years ago and was resurrected
when
> I tried megapov and photons.
>
> <moan>
> Wanted a yellow tail but caustics were too weak. Did not want a
white
> plane but anything else hides the caustics again :(
> Still too many black pixels, even with max_trace_level 85, but AA
0.01
> gets rid of most of them at this resolution. ADC_bailout does'nt
help
> much even at 0.05
> </moan>
> DOS MegaPov 0.4, Celery 500, 128M ram and took 72 minuits.
>
> Alf
>
> http://www.peake42.freeserve.co.uk/
> http://ourworld.compuserve.com/homepages/Alf_Peake/
> "...but I've never seen an elephant fly" tra-la-la (From Dumbo?)
>
>
>
>

Post a reply to this message

Alf Peake wrote:

> I posted 3 replies to this thread on 25/8 but can not see them here.
> Can anyone else see them please?
>
> Alf

I can't see them either, Alf.

Kevin Jackson-Mead
http://www.mindspring.com/~jacksonmead

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On Sat, 26 Aug 2000 11:26:09 +0100, Alf Peake wrote:
>I posted 3 replies to this thread on 25/8 but can not see them here.
>Can anyone else see them please?
>

Can't see any of your replies.  Maybe the browser crashed before you
posted or something. 

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

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

web http://www.zeropps.uklinux.net/

or  http://start.at/zero-pps

  2:36pm  up 4 days, 18:54,  2 users,  load average: 1.07, 1.51, 1.55

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(3rd repost, seems I can only reply to my original post)

Subject: ReDragonfly revisited 39k
Date: 25 August 2000 20:54

Tor Olav Kristensen <tto### [at] onlineno> wrote in message
news:39A45056.32E778EF@online.no...
>
> Nice !
Thank you.

>
> I like the red glass a lot. What's the code for it ?
#declare Filtr=0.95; // Used ior 1.45 in final merged objects.
#declare GlassF = finish{ phong 0.4 phong_size 400 diffuse 0.1
reflection 0.05 ambient 0.5 }
Object{ Thorax pigment{ rgbf <1,0.2,0.2,Filtr> } finish{ GlassF } }

>
> And how are the wings done ?
// The PNG is wing-shaped crackle, blurred to round-off the outer
edges.
#declare Wing=
difference{ box{ <0,-1,0>, 0.996 }
            height_field{ png "dragonhf.png" smooth translate -y*0.25
inverse }
            height_field{ png "dragonhf.png" smooth scale <1,-1, 1>
translate y*0.25 inverse }
     translate <-0.02,0,-0.95>
     scale <5.5,0.05,1.5> // Front pair. Rear pair will scale this
one.
     rotate <-16,-104,0>
     pigment{ rgbf <0.8,0.9,1,Filtr> } finish{ GlassF }
}

>
> There seems to be some problems with the attachment of the
> rear wings to the body.
Yes, its that blob / camera angle thingy again. Same sort of thing
happens with 'lipsoids. I also lose the shadow with some angles.
The jpeg shows a close up, camera over left wings, (leading edge to
the left) all other objects removed, tail would be to the right. The
left 2 sections are opaque, no photons, with camera <0,4,-4> and the
right one is clear with photons and camera <0,5,-3>. Note the right
pair of wings do not connect in this one :(

See also a larger version, 88k,  of the pic I uploaded here in March:

http://www.peake42.freeserve.co.uk/pix1/dragnfly.jpg

Alf

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Attachments:
Download 'Detail.jpg' (19 KB)

Preview of image 'Detail.jpg'

(Been having trouble replying - seems response headers are screwed)

Subject: Re: Dragonfly revisited 39k
Date: 25 August 2000 16:20

Should be a macro around to cover this with sugar I guess. What
flavour the blue? :)

Thanks also David F for response.

Alf


Rick [Kitty5] <ric### [at] kitty5com> wrote in message
news:39a508db$1@news.povray.org...
> Looks like that gummy jelly stuff, yummy
>
>
> --
> Rick
> Kitty5 WebDesign - http://www.kitty5.com
> TEL - +44 (01625) 266358 : FAX +44 (01625) 611913
>
> PGP Public Key
> http://pgpkeys.mit.edu:11371/pks/lookup?op=get&search=0x55116DCC
>
>

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Alf Peake wrote:

> (3rd repost, seems I can only reply to my original post)
>
> Subject: ReDragonfly revisited 39k
> Date: 25 August 2000 20:54
>
> Tor Olav Kristensen <tto### [at] onlineno> wrote in message
> news:39A45056.32E778EF@online.no...
> >
> > Nice !
> Thank you.
>
> >
> > I like the red glass a lot. What's the code for it ?
> #declare Filtr=0.95; // Used ior 1.45 in final merged objects.
> #declare GlassF = finish{ phong 0.4 phong_size 400 diffuse 0.1
> reflection 0.05 ambient 0.5 }
> Object{ Thorax pigment{ rgbf <1,0.2,0.2,Filtr> } finish{ GlassF } }

Thank you!  I'll try that.


> > And how are the wings done ?
> // The PNG is wing-shaped crackle, blurred to round-off the outer
> edges.
> #declare Wing=
> difference{ box{ <0,-1,0>, 0.996 }
>             height_field{ png "dragonhf.png" smooth translate -y*0.25
> inverse }
>             height_field{ png "dragonhf.png" smooth scale <1,-1, 1>
> translate y*0.25 inverse }
>      translate <-0.02,0,-0.95>
>      scale <5.5,0.05,1.5> // Front pair. Rear pair will scale this
> one.
>      rotate <-16,-104,0>
>      pigment{ rgbf <0.8,0.9,1,Filtr> } finish{ GlassF }
> }

Ahh... Height fields !

Thanks again.


> > There seems to be some problems with the attachment of the
> > rear wings to the body.
> Yes, its that blob / camera angle thingy again. Same sort of thing
> happens with 'lipsoids. I also lose the shadow with some angles.
> The jpeg shows a close up, camera over left wings, (leading edge to
> the left) all other objects removed, tail would be to the right. The
> left 2 sections are opaque, no photons, with camera <0,4,-4> and the
> right one is clear with photons and camera <0,5,-3>. Note the right
> pair of wings do not connect in this one :(

I wasn't aware that there were such problems with blobs.
Is it a photons-only error, or can it happen to me in standard POV
as well ?

What are 'lipsoids in POV-ray ?


> See also a larger version, 88k,  of the pic I uploaded here in March:
>
> http://www.peake42.freeserve.co.uk/pix1/dragnfly.jpg

May I ask how you generate that Fibonacci stuff ?

I have a vague memory of a Golden Ratio between the
number of right turns and the number of left turns (?)


Tor Olav
--
mailto:tor### [at] hotmailcom
http://www.crosswinds.net/~tok/tokrays.html

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