POV-Ray : Newsgroups : povray.advanced-users : Strange media artefact : Strange media artefact Server Time
19 Jun 2021 18:46:48 EDT (-0400)
  Strange media artefact  
From: Bald Eagle
Date: 8 Feb 2021 14:40:08
Message: <web.6021933a6b2775471f9dae300@news.povray.org>
While working out some media stuff for Mike, I ran a a quick media test to just
make sure I had the standard part working, and I got some odd results.

Perhaps someone could render this and tell me why the center gives me a nice x
gradient, but off to the sides I get those weird fans / lines.

(Alain, fyi:  the syntax is simply "method 3", not "sampling_method 3")


#version 3.8;
global_settings {assumed_gamma 1.0 }

camera {
 location <0, 8, -10>
 //location <0, 10, 3>
 right x*image_width/image_height
 up y
 look_at <0, 0, 0>
}

light_source {<0, 50, -1> rgb 1}

sky_sphere {pigment {rgb <1, 1, 1>}}


box {<-10, -1, -5>, <10, 1, 5>
 pigment {rgbt 1}
 hollow
 interior {
  media {
   absorption <1, 1, 1>
   //emission <1, 0.2, -0.6>*0.9
   //scattering{ 1, <1,1,1>
   //extinction  2.0
   method 3
   intervals 1 //DO NOT increase !
   samples 10, 50
   density {
    gradient x
    color_map {
     [0.0 rgb 0.0]//border
     //[0.5 rgb 0.1]
     [1.0 rgb 1.0]//center
    } // end color_map
   } // end density
  } // end media
 } // end interior

} // end box


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