With the following shape, I want to flatten the point on the left side and
sharpen the point on the right side - any suggestions how to do this?

#version unofficial MegaPov 0.7;
#include "colors.inc"
light_source{<0,0,0> color rgb<1,1,1> translate <-300, 0, -300>}
camera{location  <0.0, 0, -15> look_at   <0.0, 0.0,  0.0>}
sky_sphere{pigment{Blue}}

// ----------------------------------------

isosurface{
  function{sqr(x/5+abs(x/20))+sqr(y-abs(y/4))+sqr(z/2)-1}
  method 2
  eval
  max_gradient 20
  contained_by{sphere{0,10}}
  pigment{Green}
  rotate x*-90
}


--
#macro G(D,E,F)#local I=array[3]{D,E,F}#local B=0;triangle{#while(
B<3)#while(I[B])A[mod(I[B],10)]+#local I[B]=div(I[B],10);#end<-5,-
2,9>#local B=B+1;#end}#end #local A=array[7]{x,x*2,x*4,y,y*2,y*4,z
}light_source{-x*6-z*9,1}mesh{G(105,10,146)G(105,246,10)G(105,56,
146)G(105,1256,246)G(1256,126,220)G(22156,2216,201)pigment{rgb 1}}//TM

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