use include module test_stereographic_extrude_rs(outer_sphere_r, inner_sphere_r) { assertEqualPoint([16.6667, 15.0756], [outer_sphere_r, inner_sphere_r]); } module test_stereographic_extrude() { echo("==== test_stereographic_extrude ===="); dimension = 100; stereographic_extrude(shadow_side_leng = dimension) text( "M", size = dimension, valign = "center", halign = "center" ); } test_stereographic_extrude();