POV-Ray : Newsgroups : povray.binaries.images : Henyey-Greenstein Scattering Eccentricity Server Time
17 Nov 2024 00:17:55 EST (-0500)
  Henyey-Greenstein Scattering Eccentricity (Message 1 to 4 of 4)  
From: Mike Raiford
Subject: Henyey-Greenstein Scattering Eccentricity
Date: 4 Feb 2005 14:22:31
Message: <4203cb77@news.povray.org>
Just a chart like the previous, showing the effect of eccentricity.

-- 
~Mike

Things! Billions of them!


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From: Maurice
Subject: Re: Henyey-Greenstein Scattering Eccentricity
Date: 4 Feb 2005 15:01:55
Message: <4203d4b3@news.povray.org>
Mike Raiford wrote:
> Just a chart like the previous, showing the effect of eccentricity.

Keep it up. Please put it on the Wiki

-- 
Maurice


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From: Gert  Van den Eynde
Subject: Re: Henyey-Greenstein Scattering Eccentricity
Date: 8 Feb 2005 09:54:52
Message: <4208d2bb@news.povray.org>
Mike Raiford wrote:

> Just a chart like the previous, showing the effect of eccentricity.
> 
great!. I justed asked an example like this the week before (Warp also gave
me a nice example pic). Would you mind posting the scene file?

thanks,
gert


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From: Mike Raiford
Subject: Re: Henyey-Greenstein Scattering Eccentricity
Date: 8 Feb 2005 12:45:59
Message: <4208fad7$1@news.povray.org>
Gert Van den Eynde wrote:
> Mike Raiford wrote:
> 
> 
>>Just a chart like the previous, showing the effect of eccentricity.
>>
> 
> great!. I justed asked an example like this the week before (Warp also gave
> me a nice example pic). Would you mind posting the scene file?
> 
> thanks,
> gert

Sure,

It's a rather simple scene:

---8<---

global_settings
{

     assumed_gamma 1.0

     max_trace_level 12
     adc_bailout 1/128
}

//background { color rgb <0.1, 0.6, 0.8> }

default { finish { ambient 0 diffuse 0.9 }}

//plane { y,-1.1  pigment { checker  color rgb <0.7,0.9,1.0>*0.75 color 
rgb <0.7,0.9,1.0>*0.5 } }

camera {

     location <0, 0, -3>
     look_at <0, 0, 0>
     angle 60


     //blur_samples 10
     confidence 0.99
     variance 1/256
     aperture 0.001
}


light_source { <-10, 20, 0> color rgb 1.0
   media_interaction off
}


light_source { <-.5,0,-10> color rgb <1.0,0.25,0.25>
     spotlight
     point_at <-.5, 0, 0>
     radius 0.5
     falloff 0.6

}

light_source { <.5,0,10> color rgb <0.25,0.25,1.0>
     spotlight
     point_at <.5, 0, 0>
     radius 0.5
     falloff 0.6

}

#declare i = 64;
#declare n = i;
#while(i)
light_source { <0,.75,0> color rgb 1.0
     cylinder
     point_at <0,.75,-10>
     radius 0.05
     falloff 0.06
     rotate y*i*(360/n)
}
#declare i = i - 1;
#end



#declare clouds = union {
     sphere {<-1,0,0>, .5}
     sphere {< 0,0,0>, .5}
     sphere {< 1,0,0>, .5}
}


#declare f_pat = function { pattern { object { clouds } } }

box { -1, 1

     pigment { color rgbt 1
         //object {clouds rgb 1,  rgb 0}
         }
     hollow

     #debug "Method="
     #debug str(clock,0,2)
     #debug "\n"
     interior
     {
         media {
             scattering { 1 , rgb 1 }//extinction 0 eccentricity clock }

             //intervals 1
             aa_level 4
             aa_threshold 1/10
             samples 20


         }

     }
     }
--- 8< ---

-- 
~Mike

Things! Billions of them!


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