use use maze_rows = 10; cell_width = 40; wall_thickness = 20; fn = 36; shadow = "YES"; // [YES, NO] wall_height = 2; module stereographic_projection_maze2(maze_rows, cell_width, wall_thickness, fn, wall_height, shadow) { length = cell_width * maze_rows + wall_thickness; module maze() { translate([-cell_width * maze_rows / 2, -cell_width * maze_rows / 2, 0]) square_maze(maze_rows, cell_width, wall_thickness); } stereographic_extrude(shadow_side_leng = length, $fn = fn, convexity = 10) maze(); if(shadow == "YES") { color("black") linear_extrude(wall_height) maze(); } } stereographic_projection_maze2(maze_rows, cell_width, wall_thickness, fn, wall_height, shadow);