Hello,

The attached picture show heightfields created from an isosurface. The
bottom ones are "smooth" but don't exactly look like I would expect, or like
I remember triangles do when they are smoothed correctly.. I tried different
lights.. I tried TGA, PNG and GIF.. I tried POV 3.5, MegaPOV 0.7 and POV
3.1g and two computers.. It's all the same..What do you think?


#version 3.5;

camera { right -1.33*x up 1*y direction 1*z
 location <-3.5,3.2,6>*.6 look_at 0 angle 48 }

light_source { <-25,25,25> color rgb 1 }

height_field { png "heightfield.png"
 water_level .000001 translate -.5
 scale <3,.75,2.75> rotate 90*x
 pigment { rgb 1 }
 finish { ambient 0 diffuse .67 specular .1 }
 no_shadow }

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