I have just started using POV-ray but I seem to have struck a problem in my
first proper model. In the file below there is an oval mirror at 45 deg which
ought to be reflecting a circular patch of light onto the plane in which there
should a shadow of the sphere.

This is not present although you can see reflected light source re-reflected in
the mirrored sphere.

      #include "colors.inc"
  #include "textures.inc"
  camera {
    location  <-4, 3, -9>
    look_at   <0, 2, 0>
    angle 48
  }
  plane {
    y, -1
    texture {
      pigment {
        checker
        color rgb<0.5, 0, 0>
        color rgb<0, 0.5, 0.5>
      }
      finish {
        diffuse 0.4
        ambient 0.2
        phong 1
        phong_size 100
        reflection 0.25
      }
    }
  }
cylinder { <0,0,0> ,<0,-.1,0>, 2
finish {reflection {1.0} ambient 0 diffuse 0  }
scale <1.42,1,1>
rotate <0,0,-45>
translate<0,3,0>}

  sphere {
    <0,0,0>,1
   finish {reflection {1.0} ambient 0 diffuse 0 }
    translate <0, 0, 0>
  }
   light_source {
    <-10, 1, 0>
    color White
  }

Otherwise I anticipte doing some fantastic things with POV-Ray.

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