#include "functions.inc"

#declare C_LOC = <-2, 2, 0.0>;

// perspective (default) camera
camera {
  location  C_LOC
  look_at   <0.0, 1,  0.0>
}

light_source {
    C_LOC, 1
}

#declare T_White = texture {
    pigment { color rgb 1.0 }
    finish {
        diffuse 1.0
        ambient 0.0
    }
}

#declare O_Stem = difference {
    box { 0.4, -0.5 }
    torus {
        0.8,
        0.7
    }
    translate <0, 0.5, 0>
}

object {
    isosurface {
      function { -f_torus(x*((1+(y+0.5))) + 0.3*sin((y+0.5)*2.5*pi)-0.3*(y+0.5), y*y, z*((1+y+0.5)), 0.8, 0.7) }
      contained_by { box {<-0.5,-0.5,-0.5>, <0.5,0.0,0.5> } } 
      accuracy 0.001
      max_gradient 3
      translate <0, 0.5, 0>
      scale <2, 3, 2>
    }
    texture { T_White }
    rotate y*90
}