 |
|
|
|
|
|
| |
| |
|
|
|
|
| |
| |
|
|
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] peake42 freeservecouk> 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
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
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
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
(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
Post a reply to this message
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
>
>
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
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
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
"Alf Peake" <alf### [at] peake42freeservecouk> wrote in message
news:39a44922@news.povray.org...
|
| 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
Just over an hour to render isn't bad.
About the 85 for max trace, were you going by what the statistics show? I would have
thought that
you could use a third that number easily. Black dropped out pixels aren't the same as
dark pixels
:-) I don't see anything wrong in this image anyhow. Well, except I was trying to
see the blue
caustics and finally realized it looks spread out and less intense as the others.
It's a great glass dragonfly but that rear pair of wings, at the connecting points as
someone
already said, could use a better joining.
Bob
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Bob Hughes <per### [at] aolcom?subject=PoV-News:> wrote in message
news:39ab03d6$1@news.povray.org...
> "Alf Peake" <alf### [at] peake42freeservecouk> wrote in message
news:39a44922@news.povray.org...
> |
> | 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
>
> Just over an hour to render isn't bad.
> About the 85 for max trace, were you going by what the statistics
show? I would have thought that
Yes, I get 85/85, and I realised it was probably overkill on my part
persuing it.
> you could use a third that number easily. Black dropped out pixels
aren't the same as dark pixels
> :-) I don't see anything wrong in this image anyhow. Well, except
I was trying to see the blue
> caustics and finally realized it looks spread out and less intense
as the others.
It is spread. I wasn't happy about poor blue caustics either but
assumed it was something to do with the way RGB values are weighted.
Its clearer with ior 1.2 but I wanted around 1.5
> It's a great glass dragonfly but that rear pair of wings, at the
connecting points as someone
> already said, could use a better joining.
The wings actually do penetrate the red blob, as can be seen in my 26k
jpeg reply to Tor (In this thread I'm only able to reply to my
original post, otherwise post goes to my ISP news server, not
news.pov). I don't know if its a photon thing or not. Will check when
I get the tine :)
Simplified source posted to p.t.s-f
>
> Bob
Alf
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Tor Olav Kristensen <tto### [at] onlineno> wrote in message
news:39AAE38B.A57CEA91@online.no...
>
> 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...
> > >
>
> > > 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 ?
Happens with me in dos versions of pov3.1g and megapov 0.4
Will post a piece in p.t.s-f (Dragnfly1.pov)
>
> What are 'lipsoids in POV-ray ?
Superellipsoids. Sorry, my bad habit of shortening words.
>
>
> > 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 (?)
Check this, amongst others, explains better than I can:
http://www.mcs.surrey.ac.uk/Personal/R.Knott/Fibonacci/fibnat.html
and look for my GoldnRatio in p.b.i later, with source in p.t.s-f
>
>
> Tor Olav
> --
> mailto:tor### [at] hotmailcom
> http://www.crosswinds.net/~tok/tokrays.html
>
Alf
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Alf Peake wrote:
> Tor Olav Kristensen <tto### [at] onlineno> wrote in message
> news:39AAE38B.A57CEA91@online.no...
> ...
> > 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 (?)
>
> Check this, amongst others, explains better than I can:
> http://www.mcs.surrey.ac.uk/Personal/R.Knott/Fibonacci/fibnat.html
> and look for my GoldnRatio in p.b.i later, with source in p.t.s-f
> ...
That's a great web page.
And thank you for posting your GoldenRatio code.
Now I'll go and see if I can blobbyfy it !
Tor Olav
--
mailto:tor### [at] hotmailcom
http://www.crosswinds.net/~tok/tokrays.html
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
|
|
