dotCSAD icosaeder, prepared for OpenSCAD "animate"

ico.2.scad

// require  https://github.com/JustinSDK/dotSCAD
use <triangle/tri_subdivide.scad> 
use <polyhedra/geom_icosahedron.scad>
use <surface/sf_solidifyT.scad> 

icosahedron_detail = 0;
subdivided_n = 0;
radius = 10;
thickness = 1;

geom = geom_icosahedron(radius, icosahedron_detail);
points = geom[0];
faces = geom[1];

$vpr=[$t*360,0,0];
$vpt=[0,3,0];
echo(rands(0,1,3,1234));

for(f = faces) {

    triangle = [for(i = f) points[i]];

    // subdivide the triangle
    triangles = tri_subdivide(triangle, subdivided_n);

    points_inner = [
        for(t = triangles, p = t) 
        let(unit_vector = p / norm(p))
        unit_vector * radius
    ];
    points_outer = [
        for(t = triangles, p = t) 
        let(unit_vector = p / norm(p))
        unit_vector * (radius - thickness)
    ];
    ff = [for(i = [0:3:len(points_inner) - 3]) [i, i + 1, i + 2]];

    color(rands(0, 1, 3))
    sf_solidifyT(points_outer, points_inner, ff);
}

https://www.reddit.com/r/openscad/comments/wa5y86/tria_p1_p2_p3_module_implements_spherical/iiliw9t/