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using 64 bicubic_patches...
Parse Time: 1 second
Trace Time: 47 minutes, 48 seconds
Peak Memory used: 1251415 bytes (1.19 MB)
Pentium 3 450Mhz, 192MB RAM, under Windows XP, GUI priority: highest, Render priority:
lowest.
Not perfect at all, but I think this might be a useful technique for some
situations...
If I replace the bicubic_patches with cloth simulations textured in the same way,
maybe it
will look realistic enough to be used :)
cu!
--
camera{location-z*3}#macro G(b,e)b+(e-b)*(C/50)#end#macro L(b,e,k,l)#local C=0
;#while(C<50)sphere{G(b,e),.1pigment{rgb G(k,l)}finish{ambient 1}}#local C=C+1
;#end#end L(y-x,y,x,x+y)L(y,-x-y,x+y,y)L(-x-y,-y,y,y+z)L(-y,y,y+z,x+y)L(0,x+y,
<.5,1,.5>,x)L(0,x-y,<.5,1,.5>,x) // ZK http://www.povplace.be.tf
Post a reply to this message
Attachments:
Download 'haar1.jpg' (13 KB)
Preview of image 'haar1.jpg'
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"Zeger Knaepen" <zeg### [at] student kuleuvenacbe> wrote in message
news:3c33b800@news.povray.org...
> using 64 bicubic_patches...
> Parse Time: 1 second
> Trace Time: 47 minutes, 48 seconds
> Peak Memory used: 1251415 bytes (1.19 MB)
>
> Pentium 3 450Mhz, 192MB RAM, under Windows XP, GUI priority: highest, Render
priority:
> lowest.
>
> Not perfect at all, but I think this might be a useful technique for some
situations...
> If I replace the bicubic_patches with cloth simulations textured in the same
way, maybe it
> will look realistic enough to be used :)
Excellent!
--
light_source{0,1}#macro c(J,a)sphere{0,1pigment{rgb z}scale a translate J+O}
#end#macro B(R,V,O)c(0,4)intersection{c(V,R)difference{c(-z*4x+10)c(-z*4.1x+
10)c(0<7.5,45,5>)}}#end B(12,0z*25)B(8y*4<0,12,50>) // Batronyx ^"^
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How very non-POV. :)It looks quite interesting. Care to explain more about
how you did it?
Post a reply to this message
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> Excellent!
tnx!
cu!
--
ZK AKA SaD
http://www.povplace.be.tf
"I put the grrrr in swinger, baby!!"
Post a reply to this message
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> How very non-POV. :)It looks quite interesting.
tnx
> Care to explain more about
> how you did it?
hmmm, I'll try :) It's actually very simple. The problem with hair simulations is
that
it's very slow because there should be many object (one object per hair). However,
from a
distance we don't see the individual hairs, so it isn't really necessary to render
them as
individual objects. So I made a bicubic_patch, gave it a hairy texture (long scaled
wrinkles) that fades to transparant at the edges (using uv_mapping to 'find' the
edges),
and placed some of those around a sphere. I really think if I replace the bicubic
patches
with a cloth simulation, the results can be very interesting and maybe very useful :)
It still isn't very quick, but the placement of the patches isn't really optimized in
this
image. I believe that if I placed the patches by hand, only where they are needed,
and
used a simple non-transparent texture where you can't see the edges of the hair, it
would
take about 20 minutes or less to render acceptable hair...
cu!
--
ZK AKA SaD
http://www.povplace.be.tf
"I put the grrrr in swinger, baby!!"
Post a reply to this message
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> --
> ZK AKA SaD
> http://www.povplace.be.tf
> "I put the grrrr in swinger, baby!!"
hmmm, wrong sig :)
cu!
--
camera{location-z*3}#macro G(b,e)b+(e-b)*(C/50)#end#macro L(b,e,k,l)#local C=0
;#while(C<50)sphere{G(b,e),.1pigment{rgb G(k,l)}finish{ambient 1}}#local C=C+1
;#end#end L(y-x,y,x,x+y)L(y,-x-y,x+y,y)L(-x-y,-y,y,y+z)L(-y,y,y+z,x+y)L(0,x+y,
<.5,1,.5>,x)L(0,x-y,<.5,1,.5>,x) // ZK http://www.povplace.be.tf
Post a reply to this message
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I actually saw someone with hair like that (well it was black) at
the New Year's party I was at...
-peter
--
Current obsession: "Ballet pour ma fille."
http://www.applesnake.net
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Zeger Knaepen wrote:
> However, from a distance we don't see the individual hairs, so it isn't
> really necessary to render them as
> individual objects. So I made a bicubic_patch, gave it a hairy texture
> (long scaled wrinkles) that fades to transparant at the edges (using
> uv_mapping to 'find' the edges),
> and placed some of those around a sphere. I really think if I replace the
> bicubic patches with a cloth simulation, the results can be very
> interesting and maybe very useful :)
Very fine and techie trick! I figure this hair would be very handy for
Blobman models with alopecia problems.
--
Jaime Vives Piqueres
La Persistencia de la Ignorancia
http://www.ignorancia.org
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> I actually saw someone with hair like that (well it was black) at
> the New Year's party I was at...
lol :)
cu!
--
camera{location-z*3}#macro G(b,e)b+(e-b)*(C/50)#end#macro L(b,e,k,l)#local C=0
;#while(C<50)sphere{G(b,e),.1pigment{rgb G(k,l)}finish{ambient 1}}#local C=C+1
;#end#end L(y-x,y,x,x+y)L(y,-x-y,x+y,y)L(-x-y,-y,y,y+z)L(-y,y,y+z,x+y)L(0,x+y,
<.5,1,.5>,x)L(0,x-y,<.5,1,.5>,x) // ZK http://www.povplace.be.tf
Post a reply to this message
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> Very fine and techie trick! I figure this hair would be very handy for
> Blobman models with alopecia problems.
I certainly hope so :)
cu!
--
camera{location-z*3}#macro G(b,e)b+(e-b)*(C/50)#end#macro L(b,e,k,l)#local C=0
;#while(C<50)sphere{G(b,e),.1pigment{rgb G(k,l)}finish{ambient 1}}#local C=C+1
;#end#end L(y-x,y,x,x+y)L(y,-x-y,x+y,y)L(-x-y,-y,y,y+z)L(-y,y,y+z,x+y)L(0,x+y,
<.5,1,.5>,x)L(0,x-y,<.5,1,.5>,x) // ZK http://www.povplace.be.tf
Post a reply to this message
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That really does look good. Keep us posted.
--
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
10:15am up 87 days, 2:03, 2 users, load average: 1.00, 1.02, 1.00
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absolutely great!!!
Zeger Knaepen wrote:
> using 64 bicubic_patches...
> Parse Time: 1 second
> Trace Time: 47 minutes, 48 seconds
> Peak Memory used: 1251415 bytes (1.19 MB)
>
> Pentium 3 450Mhz, 192MB RAM, under Windows XP, GUI priority: highest, Render
priority:
> lowest.
>
> Not perfect at all, but I think this might be a useful technique for some
situations...
> If I replace the bicubic_patches with cloth simulations textured in the same way,
maybe it
> will look realistic enough to be used :)
>
> cu!
> --
> camera{location-z*3}#macro G(b,e)b+(e-b)*(C/50)#end#macro L(b,e,k,l)#local C=0
> ;#while(C<50)sphere{G(b,e),.1pigment{rgb G(k,l)}finish{ambient 1}}#local C=C+1
> ;#end#end L(y-x,y,x,x+y)L(y,-x-y,x+y,y)L(-x-y,-y,y,y+z)L(-y,y,y+z,x+y)L(0,x+y,
> <.5,1,.5>,x)L(0,x-y,<.5,1,.5>,x) // ZK http://www.povplace.be.tf
>
>
>
> haar1.jpg
>
> Content-Type:
>
> image/jpeg
> Content-Encoding:
>
> x-uuencode
>
>
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Zeger Knaepen wrote:
>
> Not perfect at all, but I think this might be a useful technique for some
situations...
> If I replace the bicubic_patches with cloth simulations textured in the same way,
maybe it
> will look realistic enough to be used :)
It looks great. It really took 64 patches? I will have to try this
technique out for myself and wish that I had thought of it.
Josh English
eng### [at] spiritonecom
http://www.spiritone.com/~english
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> It looks great.
tnx :)
> It really took 64 patches?
yes, but with some tweaking, I think I could do it with less patches... (or
less cloth-simulations, if I use them... or just meshes, or whatever)
Right now I'm rendering a simple model of an old man with white hair, but
it's taking way to long to be useful... 14h 11m 23s and only 23% of the
image is done :(
> I will have to try this
> technique out for myself and wish that I had thought of it.
Actually I'm surprised that this technique is new to you all... I thought
many images done with professional rendertools used a similar technique.
cu!
--
ZK AKA SaD
http://www.povplace.be.tf
"Luckyly they included a button, right here, that'll blow the entire thing
up!"
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Zeger Knaepen <zeg### [at] studentkuleuvenacbe> wrote in message
news:3c33b800@news.povray.org...
> Not perfect at all, but I think this might be a useful technique for some
situations...
Not perfect? How's about my bald head? <g>
Post a reply to this message
Attachments:
Download 'hair.jpg' (29 KB)
Preview of image 'hair.jpg'
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Whoa! That's like a terribly bad hair restoration!
Just thought of where I've seen that hair before. Was at a zoo and it was
on the orangutan. Your photo doesn't resemble the ape at all.... except...
the orangutan had a high hairline too.
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