//
// povray v38b2_repeat_at_origin_bug.pov +w800 +h800 +p +mv3.8
//
// NOTE! For me the signature of the artefacts changed render to render
// and were sometimes quite slight, but always there. If you don't see
// a bad results try a few more times. Heavy AA 'seemed' to make a
// bad result more likely...
//

global_settings { assumed_gamma 1.0 }
background { rgb <0.8,0,0.45> }
#declare VarOrthoMult =
    3.0/max(image_width/image_height,image_height/image_width);
#declare Camera01z = camera {
    orthographic
    location <0,0,-2>
    direction z
    right VarOrthoMult*x*max(1,image_width/image_height)
    up VarOrthoMult*y*max(1,image_height/image_width)
}
#if (0)
disc {
    <0.0, 0.0, 0.0>
    <0.0, 0.0,-1.0>
    3.0
    1.0
    pigment { crackle scale 1/pow(2,16) }
    finish { emission 1 }
}
#end
disc {
    <0.0, 0.0, 0.0>
    <0.0, 0.0,-1.0>
    0.97
    0.0
    pigment { crackle repeat <3,3,3> scale 1/5 }
    finish { emission 1 }
}

camera { Camera01z }