1  use <unittest.scad>
 2  include <stereographic_extrude.scad>
 3  
 4  module test_stereographic_extrude_rs(outer_sphere_r, inner_sphere_r) {
 5      assertEqualPoint([16.6667, 15.0756], [outer_sphere_r, inner_sphere_r]);
 6  }
 7  
 8  module test_stereographic_extrude() {
 9      echo("==== test_stereographic_extrude ====");
10  
11      dimension = 100;
12  
13      stereographic_extrude(shadow_side_leng = dimension)
14         text(
15              "M", size = dimension, 
16              valign = "center", halign = "center"
17         );
18  
19  }
20  
21  test_stereographic_extrude();