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From: Wlodzimierz ABX Skiba
Subject: looking for settings for transparent plastic with radiosity (WIP)
Date: 23 Apr 2001 12:16:43
Message: <3ae4556b@news.povray.org>
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here are settings (MegaPOV) for below image
has anybody idea how to improve speed and look of it ?
the object is box for plantation of sprout (I hope it is proper word)
it is made of transparent plastic - I think that it could get settings from
transparent LEGO bricks but I can't find any - I think current version is rather
ghost instead of plastic :-(
the setting are inspired by sample files and some posts
global_setting{
radiosity{recursion_limit 5 brightness 1.2 normal on}
max_intersections 255
max_trace_level 255
photons{count 20000 gather 20,100 autostop 0}
}
object{
Platform() // returns CSG
texture{
pigment{color rgb 1 transmit .95 }
finish{
ambient -0.3
diffuse 0.8
specular 0.1
roughness 0.1
metallic
brilliance 1
reflection_type 1
reflection_min 0.0
reflection_max 1.0
conserve_energy
}
}
photons {target 1.0 reflection on }
}
rendered on PIII 1 GHz
----------------------------------------------------------------------------
Pixels: 307850 Samples: 322574 Smpls/Pxl: 1.05
Rays: 4624440 Saved: 2230393 Max Level: 68/255
----------------------------------------------------------------------------
Ray->Shape Intersection Tests Succeeded Percentage
----------------------------------------------------------------------------
Cone/Cylinder 785799942 2279424 0.29
CSG Intersection 17207298 35157 0.20
CSG Merge 5735766 3374355 58.83
CSG Union 11471532 1864102 16.25
Lathe 5735766 3133726 54.63
Lathe Bound 5735766 3980932 69.41
Plane 5735766 1685140 29.38
Sphere 1032437880 41578154 4.03
Torus 17207298 63636 0.37
Torus Bound 17207298 65522 0.38
----------------------------------------------------------------------------
Roots tested: 26443985 eliminated: 26901
Calls to Noise: 0 Calls to DNoise: 5256862
----------------------------------------------------------------------------
Shadow Ray Tests: 6683438 Succeeded: 1702918
Reflected Rays: 1667290
Transmitted Rays: 1654309
Number of photons shot: 21382
----------------------------------------------------------------------------
Radiosity samples calculated: 141071 (7.91 percent)
Radiosity samples reused: 1643387
----------------------------------------------------------------------------
Smallest Alloc: 26 bytes Largest: 122928
Peak memory used: 23457867 bytes
----------------------------------------------------------------------------
Time For Photon: 0 hours 0 minutes 6.0 seconds (6 seconds)
Time For Trace: 6 hours 47 minutes 44.0 seconds (24464 seconds)
Total Time: 6 hours 47 minutes 50.0 seconds (24470 seconds)
Total cache size: 39180
ABX
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Attachments:
Download 'platform.jpg' (40 KB)
Preview of image 'platform.jpg'
![platform.jpg](/povray.binaries.images/attachment/%3C3ae4556b%40news.povray.org%3E/platform.jpg?ttop=443840&toff=10950&preview=1)
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From: Christoph Hormann
Subject: Re: looking for settings for transparent plastic with radiosity (WIP)
Date: 23 Apr 2001 12:49:06
Message: <3AE45D0A.76EA69BD@gmx.de>
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Wlodzimierz ABX Skiba wrote:
>
> global_setting{
> radiosity{recursion_limit 5 brightness 1.2 normal on}
recursion_limit 5 is probably quite unnecessarily high.
> max_intersections 255
> max_trace_level 255
> photons{count 20000 gather 20,100 autostop 0}
> }
I don't see the photons, and where is the light source?
>
> object{
> Platform() // returns CSG
> texture{
> pigment{color rgb 1 transmit .95 }
> finish{
> ambient -0.3
> diffuse 0.8
> specular 0.1
> roughness 0.1
> metallic
> brilliance 1
> reflection_type 1
> reflection_min 0.0
> reflection_max 1.0
> conserve_energy
> }
> }
> photons {target 1.0 reflection on }
> }
>
Negative ambient? never used something like that, maybe try less transmit,
some light fading, less diffuse, more specular.
It really looks quite promising, but i would probably rather start with a
standard glass finish and try to modify it step by step.
Christoph
--
Christoph Hormann <chr### [at] gmx de>
IsoWood include, radiosity tutorial, TransSkin and other
things on: http://www.schunter.etc.tu-bs.de/~chris/
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From: Wlodzimierz ABX Skiba
Subject: Re: looking for settings for transparent plastic with radiosity (WIP)
Date: 23 Apr 2001 13:19:20
Message: <3ae46418@news.povray.org>
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Christoph Hormann wrote in message <3AE45D0A.76EA69BD@gmx.de>...
> Wlodzimierz ABX Skiba wrote:
> > global_setting{
> > radiosity{recursion_limit 5 brightness 1.2 normal on}
>
> recursion_limit 5 is probably quite unnecessarily high
thanks
> > max_intersections 255
> > max_trace_level 255
> > photons{count 20000 gather 20,100 autostop 0}
> > }
>
> I don't see the photons
that's my problem
> and where is the light source?
sorry for cutting
sky_sphere{pigment{gradient y color_map{[0 color blue .6][1 color rgb 1]}}}
light_source{<-30,30,-30>color rgb 1}
> Negative ambient? never used something like that
radiosity setting are inspired by gilles
// Message-ID: <398EE231.F90E52DC@inapg.inra.fr>
// Date: Mon, 07 Aug 2000 18:22:09 +0200
// From: Gilles Tran <tra### [at] inapg inra fr>
// Newsgroups: povray.text.scene-files
// Subject: Radiosity test file #2
> maybe try less transmit,
> some light fading, less diffuse, more specular.
thanks
> It really looks quite promising, but i would probably rather start with a
> standard glass finish and try to modify it step by step.
thanks again, good idea
ABX
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From: KalleK
Subject: Re: looking for settings for transparent plastic with radiosity (WIP)
Date: 23 Apr 2001 13:21:25
Message: <3ae46495$1@news.povray.org>
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Hi Wlodzimierz!
> here are settings (MegaPOV) for below image
> has anybody idea how to improve speed and look of it ?
> the object is box for plantation of sprout (I hope it is proper
word)
> it is made of transparent plastic - I think that it could get
settings from
> transparent LEGO bricks but I can't find any - I think current
version is rather
> ghost instead of plastic :-(
You may use 'material {ior 1.5}' (or somewhat) to make it less
ghost-looking.
And I like that wood texture!
Sorry but I can't help you with radiosity - never used it.
cukk
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From: Christoph Hormann
Subject: Re: looking for settings for transparent plastic with radiosity (WIP)
Date: 23 Apr 2001 13:27:03
Message: <3AE465EF.16CABA17@gmx.de>
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Wlodzimierz ABX Skiba wrote:
>
> >
> > I don't see the photons
>
> that's my problem
>
> > and where is the light source?
>
> sorry for cutting
> sky_sphere{pigment{gradient y color_map{[0 color blue .6][1 color rgb 1]}}}
> light_source{<-30,30,-30>color rgb 1}
>
I think you need to have a photons{} block in the light source to activate
them, something like:
photons { reflection on refraction on }
Christoph
--
Christoph Hormann <chr### [at] gmx de>
IsoWood include, radiosity tutorial, TransSkin and other
things on: http://www.schunter.etc.tu-bs.de/~chris/
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From: KalleK
Subject: Re: looking for settings for transparent plastic with radiosity (WIP)
Date: 23 Apr 2001 13:45:32
Message: <3ae46a3c@news.povray.org>
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> You may use 'material {ior 1.5}' (or somewhat) to make it less
> ghost-looking.
Ahem - interior {ior 1.5} - sorry!
cukk
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