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Here is just one example of a parametric{function{}} object which causes
my MSDOS compilation of SuperPatch to crash:
/* -------------------------------------------------*/
#include "colors.inc"
// the surface
#declare Helicoid=parametric{
function
v*cos(4*u),
u,
v*sin(4*u)
<-pi/2,-1>, <pi/2, 1>
accuracy 0.001
//precompute 15, [x,z]
}
object{
object{
Helicoid
texture {pigment{Yellow} }
/*
clipped_by{sphere{<0,0,0>,1}}
*/
}
rotate <0,70,0>
scale 6
}
camera
{
location < 16, 11,-16>
look_at < 0, 0, 0>
}
light_source { <20, 10, -20> color rgb 1 }
background{White}
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