POV-Ray : Newsgroups : povray.windows : error in rendering Server Time: 20 Jun 2019 20:01:55 GMT
  error in rendering (Message 1 to 2 of 2)  
From: gus
Subject: error in rendering
Date: 22 Dec 2010 08:50:01
Message: <web.4d11b9442b51110f965ece3a0@news.povray.org>
Hellow! My name is Alexander.
I find rendering error in next example.
If planar face commented as 'plane' will be deleted, then rendering is OK
Is is unavoidable?
Thanks


global_settings { ambient_light <0.99608, 0.99608, 0.99608>}
background { <0.83922, 0.99608, 0.98824>}
camera {
  location <0, 3.5, -1.2>
  sky      <-0, 1, 0>
  look_at  <0, 0, 0>
  right    <1, 0, 0>
  angle    24.39718
}

light_source {    <1, 1, 0>
  rgb <1.5, 1.5, 1.5>
  parallel point_at <0, 0, 0>
}

mesh2 {
  vertex_vectors { 4
    <0.27041, 1,     -0.48296>
    <0.141,   1,     -0.5>
    <0.01159, 2.167, -0.48296>
    <0.141,   2.167, -0.5>
}
 normal_vectors { 4
    <-0.25188, 0.22995, -0.94004>
    <0, 0.22995, -0.9732>          // 1
    <0.25882, 0, -0.96593>         // 2
    <0, 0, -1>                     // 3
  }
   face_indices { 2
   <2,3,1>             // warp
   <1,3,0>             // plane         <===== delete it for OK rendering
  }
  normal_indices { 1
    <2,3,1>
  }
   inside_vector <0,0,1>
  pigment { rgb <0, 1, 0>}
  finish  {
    ambient 0.5
    diffuse 0.6
  }
}


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From: gus
Subject: Re: error in rendering
Date: 22 Dec 2010 09:25:00
Message: <web.4d11c2e4cc2b0dac965ece3a0@news.povray.org>
Sorry!  It was a shadow from planar face!!!


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