POV-Ray : Newsgroups : povray.binaries.images : Photons - speckles Server Time
15 Aug 2024 18:14:38 EDT (-0400)
  Photons - speckles (Message 1 to 4 of 4)  
From: Chris Purdy
Subject: Photons - speckles
Date: 1 May 2002 13:52:48
Message: <3cd02b70@news.povray.org>
Hi all... I am wondering why I'm getting all the speckles at the bottom of
the glass in this picture.  Using Photons... heres the settings:
#version 3.5;

#declare Photons=on;

global_settings {
  assumed_gamma 1.0
  max_trace_level 5
  #if (Photons)          // global photon block
    photons {
      spacing 0.01                 // specify the density of photons

    }

  #end
}


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cup2.JPG


 

From: ingo
Subject: Re: Photons - speckles
Date: 1 May 2002 14:19:35
Message: <Xns9201CF3BCB1Cseed7@povray.org>
in news:3cd02b70@news.povray.org Chris Purdy wrote:

> Hi all... I am wondering why I'm getting all the speckles at the
> bottom of the glass in this picture.

Looks like a coincident surface like problem, if the glass is a fraction 
above or exactly on the table, try to sink it in the table a fraction.

Ingo


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From: Marc Jacquier
Subject: Re: Photons - speckles
Date: 1 May 2002 17:39:40
Message: <3cd0609c$1@news.povray.org>
Hi
nonono, he just put sparking water in his glass ;-)
Marc

Xns### [at] povrayorg...
> in news:3cd02b70@news.povray.org Chris Purdy wrote:
>
> > Hi all... I am wondering why I'm getting all the speckles at the
> > bottom of the glass in this picture.
>
> Looks like a coincident surface like problem, if the glass is a fraction
> above or exactly on the table, try to sink it in the table a fraction.
>
> Ingo


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From: Anthony D  Baye
Subject: Re: Photons - speckles
Date: 2 May 2002 21:27:32
Message: <3CD1E81B.1C7B5916@Rapidnet.com>
Try making sure that the volume of water, or whatever liquid, is a fraction
smaller than the inside area.
for example:
object {
    union {
        difference {
            cylinder { <0.0, 0.000001, 0.0> <0.0, 5.0, 0.0> 1.5 }
            cylinder { <0.0, 0.25, 0.0> <0.0, 5.000001, 0.0> 1.375 }
                texture { NBglass }
            }
            cylinder { <0.0, 0.250001, 0.0> <0.0, 3.5, 0.0> 1.3749999 }
        }
            texture { WaterTex... }
    }

A.D.B

Chris Purdy wrote:

> Hi all... I am wondering why I'm getting all the speckles at the bottom of
> the glass in this picture.  Using Photons... heres the settings:
> #version 3.5;
>
> #declare Photons=on;
>
> global_settings {
>   assumed_gamma 1.0
>   max_trace_level 5
>   #if (Photons)          // global photon block
>     photons {
>       spacing 0.01                 // specify the density of photons
>
>     }
>
>   #end
> }
>
>  [Image]


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