// -*- C -*-

patbox_side = 87 + 0.5;
patbox_centres = 60.3;

lid_box_overlap = 5;

lid_thinbox_h = 9;
lid_fatbox_h = 24;
lid_fatbox_switches_h = 6+2;

lid_max_switches_w = 70;
lid_switches_y_slop = 3;

total_len = 260;
thinbox_len = 87;

lid_top_wall = 1.5;
lid_front_wall = 1.5;
lid_side_wall = 1.5;

// computed

lid_inner_max_h = lid_box_overlap + lid_fatbox_h + lid_fatbox_switches_h;
lid_inner_min_h = lid_box_overlap + lid_fatbox_switches_h;

lid_inner_kink = [thinbox_len, thinbox_len*2];

lid_rail_w = (patbox_side - lid_max_switches_w)/2 - lid_switches_y_slop;

lid_rail_h = lid_fatbox_switches_h;

echo(lid_rail_w);

module LidSideProfile(){
  polygon([[-lid_top_wall,     lid_inner_max_h],
	   [lid_inner_kink[0], lid_inner_max_h],
	   [lid_inner_kink[1], lid_inner_min_h],
	   [total_len,         lid_inner_min_h],
	   [total_len,         -lid_front_wall],
	   [-lid_top_wall,     -lid_front_wall]]);
}

module LidSide(){
  overlap = [0.1, 0.1, 0.1];

  rotate([90,0,0])
    linear_extrude(height= lid_side_wall)
    LidSideProfile();

  translate(-overlap)
    cube(overlap + [total_len, lid_rail_w, lid_rail_h]);

  translate([-0.1, -0.1, -lid_front_wall])
    cube([total_len+0.1, patbox_side/2 + 0.2, lid_front_wall]);
}

LidSide();