Simple Scene - 5 colored reflective balls, light source, black sky,
reflective plane, But there is an un-wanted arc in the lower left corner.
I have tried moving the light source far away (900x900x900)
===============================================================
// Persistence of Vision Ray Tracer Scene Description File
// File: r-pentomino.pov
// Vers: 3.6
// Desc: Checkered Floor Example
// Date: 02/25/2007
// Auth: Ron Hudson
//

#version 3.6;

#include "colors.inc"

global_settings {
  assumed_gamma 1.0
  max_trace_level 5
}

// ----------------------------------------

camera {
  location  <0.0, 8.0, -15.0>
  direction 1.5*z
  right     x*image_width/image_height
  look_at   <0.0, 0.0,  0.0>
}



// Create an infinite sphere around scene and allow any pigment on it
sky_sphere
{
        pigment
        {
                color Black
        }
}



light_source {
  <0, 0, 0>            // light's position (translated below)
  color rgb <1, 1, 1>  // light's color
  translate <-900, 900, -900>
}


// ----------------------------------------


plane {               // Reflective Black floor
  y, 0
  texture
  {
    pigment {
      color Black
    }
    finish{
      diffuse 0.3
      ambient 0.0
      specular 0.6
      reflection {
        0.8
        metallic
      }
      conserve_energy
    }
  }
}


sphere {              // reflective sphere
  <0,1,0>, 1
  texture {
    pigment {
      color Light_Purple
    }
    finish{
      diffuse 0.3
      ambient 0.0
      specular 0.6
      reflection {
        0.8
        metallic
      }
      conserve_energy
    }
  }
}





sphere {              // reflective sphere
  <0,1,3>, 1
  texture {
    pigment {
      color Red
    }
    finish{
      diffuse 0.3
      ambient 0.0
      specular 0.6
      reflection {
        0.8
        metallic
      }
      conserve_energy
    }
  }
}


sphere {              // reflective sphere
  <3,1,3>, 1
  texture {
    pigment {
      color Green
    }
    finish{
      diffuse 0.3
      ambient 0.0
      specular 0.6
      reflection {
        0.8
        metallic
      }
      conserve_energy
    }
  }
}

sphere {              // reflective sphere
  <-3,1,0>, 1
  texture {
    pigment {
      color Blue
    }
    finish{
      diffuse 0.3
      ambient 0.0
      specular 0.6
      reflection {
        0.8
        metallic
      }
      conserve_energy
    }
  }
}


sphere {              // reflective sphere
  <0,1,-3>, 1
  texture {
    pigment {
      color Yellow
    }
    finish{
      diffuse 0.3
      ambient 0.0
      specular 0.6
      reflection {
        0.8
        metallic
      }
      conserve_energy
    }
  }
}

Post a reply to this message

"Ron" <hud### [at] gmailcom> wrote in message 
news:web.47c336ea66dc229859313d960@news.povray.org...
> Simple Scene - 5 colored reflective balls, light source, black sky,
> reflective plane, But there is an un-wanted arc in the lower left corner.
> I have tried moving the light source far away (900x900x900)
>

Hi Ron,

You can reduce the 'specular' of the plane to about 0.4 and the light 
variation becomes less apparent in the bottom left.

You also have banding on the reflections of the spheres in the plane that 
you can reduce by specifying  'metallic 0.7' rather than just 'metallic' 
within the 'reflection' clause on the plane.

Regards,
Chris B.

Post a reply to this message