I am making a macro that would draw Prisms with a variable number (N) of
points (set in macro properties).
Points are going to be generated by a certain formula.
How do i go about descrbibing such a prism?

// extrude a closed 2-D shape along an axis
prism {
  linear_sweep  // or conic_sweep for tapering to a point
  linear_spline // linear_spline | quadratic_spline | cubic_spline |
bezier_spline
  -0.5,         // height 1
   0.5,         // height 2
  N,           // number of points
  // (--- the <u,v> points ---)
<points1>, <point2>, <point3>,.....<pointN>
}

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