Hi,

Can I modulate this isosurface using a linear_spline?

======================================
#declare S = function {
   spline {
     linear_spline
    -1.0, < 0.5, 0, 0>,
    -0.5, < 0,   0, 0>,
     0.01,< 0.2, 0, 0>,
     0.5, <-0.2, 0, 0>,
     1, <-0.2, 0, 0>
   }
 }


isosurface {
function { abs(S(x, y, z)) - Thickness  }
max_gradient 2
contained_by{box{ <-36, -20, 147> <280, 20, 150> }}
pigment { color Green}
finish { ambient 0.2 diffuse 0.8 phong 1 }
translate <10, -40, -116>}
======================================

Thanks in advance.

Regards,
Oleguer Vilella

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