// CyberDeck case — RUGGED MODULAR
// Ammo-can-inspired sealed box with a gasket lip and four separate
// snap-in module bays (compute, radio, display, keyboard) so any one
// component can be swapped without opening the whole enclosure — the
// odd one out of the four: not a laptop/slab/typewriter shape at all,
// built for field use (dust, drops) over desk aesthetics.
// Fits: Raspberry Pi 4/5, Meshtastic-class LoRa board, 5-7" DSI/HDMI display,
// BB Q10/Q20-class keyboard. See ../bom.json for source hardware.
//
// Print settings: 0.28mm layer height, 40% infill (structural — this case
// is meant to survive drops), supports OFF (designed support-free), ASA or
// PETG for outdoor UV/heat tolerance, print the lid gasket lip flat-down
// for max layer strength across the seal line.
//
// Compile: openscad -o rugged-modular.stl rugged-modular.scad

pi_w = 85;  pi_d = 56;  pi_h = 17;
lora_w = 51; lora_d = 26; lora_h = 14;
disp_w = 194; disp_d = 110; disp_h = 20;
kb_w = 116; kb_d = 43; kb_h = 10;

wall = 4;          // thick, rugged
gasket = 2;
lid_h = 14;

box_w = disp_w + 2*(wall+6);
box_d = disp_d + kb_d + 3*(wall+6);
box_h = pi_h + lora_h + wall*3 + 10;

module rounded_box3(w,d,h,r) {
  hull(){
    for (x=[r,w-r]) for (y=[r,d-r])
      translate([x,y,0]) cylinder(r=r,h=h,$fn=32);
  }
}

module base_box() {
  difference(){
    rounded_box3(box_w, box_d, box_h, 6);
    translate([wall,wall,wall])
      rounded_box3(box_w-2*wall, box_d-2*wall, box_h, 5);
    // gasket channel around the top rim
    translate([0,0,box_h-gasket-1])
      difference(){
        rounded_box3(box_w, box_d, gasket+2, 6);
        translate([wall-gasket, wall-gasket, -1])
          rounded_box3(box_w-2*(wall-gasket), box_d-2*(wall-gasket), gasket+4, 4);
      }
  }
  // four internal module bay dividers
  divider_y = wall + disp_d + 6;
  translate([wall, divider_y, wall]) cube([box_w-2*wall, wall, box_h-wall*2]);
  translate([box_w/2, wall, wall]) cube([wall, disp_d, box_h-wall*2]);
  // corner reinforcement gussets (rugged detail)
  for (c=[[wall,wall],[box_w-wall*3,wall],[wall,box_d-wall*3],[box_w-wall*3,box_d-wall*3]])
    translate([c[0],c[1],wall])
      cube([wall*2, wall*2, 12]);
  // engraved wordmark on the front exterior face, recessed panel
  translate([box_w/2, -0.1, box_h*0.6])
    rotate([90,0,0])
      linear_extrude(height=0.6)
        text("PERFECT WORLD PROJECT", size=5.5, halign="center", valign="center",
             font="Liberation Mono:style=Bold");
  translate([box_w/2, -0.1, box_h*0.6-9])
    rotate([90,0,0])
      linear_extrude(height=0.6)
        text("CYBERDECK — RUGGED MODULAR", size=3.2, halign="center", valign="center",
             font="Liberation Mono");
}

module lid() {
  difference(){
    rounded_box3(box_w, box_d, lid_h, 6);
    translate([wall, wall, gasket])
      rounded_box3(box_w-2*wall, box_d-2*wall, lid_h, 4);
    // display window
    translate([wall+6, wall+6, -1])
      cube([disp_w, disp_d, lid_h+2]);
    // keyboard window
    translate([(box_w-kb_w)/2, box_d-wall-6-kb_d, -1])
      cube([kb_w, kb_d, lid_h+2]);
  }
  // gasket tongue matching base channel
  translate([wall-gasket, wall-gasket, -gasket])
    difference(){
      rounded_box3(box_w-2*(wall-gasket), box_d-2*(wall-gasket), gasket, 4);
      translate([gasket,gasket,-1]) rounded_box3(box_w-2*wall, box_d-2*wall, gasket+2, 3);
    }
  // four corner latch tabs (printed cantilever snaps, field-serviceable
  // without tools — the point of the "modular" name)
  for (c=[[10,0],[box_w-10-8,0],[10,box_d-4],[box_w-10-8,box_d-4]])
    translate([c[0],c[1],-6])
      cube([8,4,6]);
}

translate([0,0,0]) base_box();
translate([box_w+20,0,0]) lid();