The function image type is mirrored vertically.
It does take values in the 0 to 1 range both horizontally and vertically as
it should, but the y values go from 1 to 0 instead of from 0 to 1.

The code below shows the bug. Can anybody confirm?

camera {location -3*z}
#default {finish {ambient 1}}
#declare F = function {pattern {spherical}}
plane {
   -z, 0
   pigment {function {F(x,y,z)}}
}
box {
   <0,0,-0.001>,<1,1,1>
   pigment {
      image_map {function 100, 100 {F(x,y,z)}}
   }
}

Rune
--
3D images and anims, include files, tutorials and more:
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POV-Ray Users: http://rsj.mobilixnet.dk/povrayusers/
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