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'

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] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other 
things on: http://www.schunter.etc.tu-bs.de/~chris/

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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] inapginrafr>
// 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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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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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] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other 
things on: http://www.schunter.etc.tu-bs.de/~chris/

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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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