//=====POV CODE ===========
#version unofficial MegaPOV 0.6; // 0.7
camera{  location  <1, 4, -20.0> direction 2*z   right  x*1.33
look_at   <0.0, 1.5,  0.0>}
background{color rgb <.3,.5,.3>}
light_source{<100,100,-100> color rgb <.9,.9,1>*2}
//--------------------------------------------------

#declare  F = function {x^2 + y + z^2 - 1}
                                                                   
      isosurface {
             function { F(x,y,z) }
             accuracy 0.001
             max_gradient 10
            contained_by {box {<-1,0,-1><1,1,1>}}
            texture{pigment{rgb <1,.2,.1>}}
            scale 3
}                    

//===ENd CODE========
-- 
Martial
 mailto:Mar### [at] chellofr 
 http://martial.rameaux.free.fr

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