star.scad

module star_2d(num_points = 5, outer_radius = 10, inner_radius = 4) {
    angle = 360 / num_points;
    points = [ for (i = [0 : num_points - 1]) [
        outer_radius * cos(i * angle),
        outer_radius * sin(i * angle)
    ] ];
    inner_points = [ for (i = [0 : num_points - 1]) [
        inner_radius * cos(i * angle + angle), 
        inner_radius * sin(i * angle + angle)  
    ] ];
    polygon(concat(points, inner_points));
}

module star_3d(num_points = 5, outer_radius = 10, inner_radius = 4, height = 5) {
    linear_extrude(height = height) star_2d(num_points, outer_radius, inner_radius);
}

star_3d(); // Create a default 5-pointed star with height 5