epaper_door_case/lid.scad

// Sliding lid for EE04 case — integrates epd_case as ceiling
// z=0 = bottom of flanges; z=FLANGE_H = ceiling underside / epd_case backplate bottom
include <params.scad>
use <epd_case.scad>
use <GDEY0583T81.scad>

/* [Preview] */
SHOW_DISP = true;

// ============================================================
//  LID  (slide-on; enters from Y- face, closes toward Y+)
//  Flanges sit inside cavity and ride on base retention flange hypotenuses.
// ============================================================
module lid() {
  // Flanges: right triangles in XZ; hypotenuse at reciprocal angle to base retention flanges.
  // Wide vertical face at x=WALL+FLANGE_W (inner), tip at bottom-wall-face — same
  // (-FLANGE_W, -FLANGE_H) hypotenuse slope as base flanges so they mate when lid slides in.
  color("#2C3863") {
    // Left (X-) flange
    hull() {
      translate([WALL + FLANGE_W - SLIDE_CLEAR - 0.01, 0, 0])
        cube([0.01, LID_Y_LEN - FLANGE_W + SLIDE_CLEAR, FLANGE_H - SLIDE_CLEAR]);
      translate([WALL + SLIDE_CLEAR, 0, -0.005])
        cube([0.01, LID_Y_LEN - FLANGE_W + SLIDE_CLEAR, 0.01]);
    }
    // Right (X+) flange
    hull() {
      translate([OUT_L - WALL - FLANGE_W + SLIDE_CLEAR, 0, 0])
        cube([0.01, LID_Y_LEN - FLANGE_W + SLIDE_CLEAR, FLANGE_H - SLIDE_CLEAR]);
      translate([OUT_L - WALL - SLIDE_CLEAR - 0.01, 0, -0.005])
        cube([0.01, LID_Y_LEN - FLANGE_W + SLIDE_CLEAR, 0.01]);
    }

    // Interior ribs — 2 mm wide
    translate([WALL + FLANGE_W - SLIDE_CLEAR, 0, 0])
      cube([2.0, LID_Y_LEN - FLANGE_W + SLIDE_CLEAR, FLANGE_H]);
    translate([OUT_L - WALL - FLANGE_W + SLIDE_CLEAR - 2.0, 0, 0])
      cube([2.0, LID_Y_LEN - FLANGE_W + SLIDE_CLEAR, FLANGE_H]);

    // Y+ locking flanges — angled wedge matching side-flange profile; split around FPC notch
    for (seg = [
      [FLANGE_W - SLIDE_CLEAR + 2.0,
       2+PCB_OX + FPC_CX - FPC_NOTCH_W/2 - (WALL + FLANGE_W - SLIDE_CLEAR + 2.0)],
      [PCB_OX + FPC_CX + FPC_NOTCH_W/2,
       OUT_L - FLANGE_W + SLIDE_CLEAR - 2.0 - (PCB_OX + FPC_CX + FPC_NOTCH_W/2)]
    ]) {
      hull() {
        translate([seg[0], LID_Y_LEN - FLANGE_W + SLIDE_CLEAR - 0.01, 0])
          cube([seg[1], 0.01, FLANGE_H - SLIDE_CLEAR]);
        translate([seg[0], LID_Y_LEN - SLIDE_CLEAR - 0.01, -0.005])
          cube([seg[1], 0.01, 0.01]);
      }
      // Backing rib — 2 mm deep on cavity face of flange, matches side-rib style
      translate([seg[0], LID_Y_LEN - FLANGE_W + SLIDE_CLEAR - 2.0, 0])
        cube([seg[1], 2.0, FLANGE_H]);
    }

    // Y+ corners — intersection of the X-prism and Y-prism in the corner region.
    // Equivalent to: cube with the X-flange relief cut AND the Y-flange relief cut applied.
    // Result tapers to zero height along both wall faces, producing a single shared edge.
    // Left corner (X-)
    intersection() {
      hull() {
        translate([WALL + FLANGE_W - SLIDE_CLEAR - 0.01, LID_Y_LEN - FLANGE_W + SLIDE_CLEAR, 0])
          cube([0.01, FLANGE_W - 2*SLIDE_CLEAR, FLANGE_H - SLIDE_CLEAR]);
        translate([WALL + SLIDE_CLEAR, LID_Y_LEN - FLANGE_W + SLIDE_CLEAR, -0.005])
          cube([0.01, FLANGE_W - 2*SLIDE_CLEAR, 0.01]);
      }
      hull() {
        translate([WALL + SLIDE_CLEAR, LID_Y_LEN - FLANGE_W + SLIDE_CLEAR, 0])
          cube([FLANGE_W - 2*SLIDE_CLEAR, 0.01, FLANGE_H - SLIDE_CLEAR]);
        translate([WALL + SLIDE_CLEAR, LID_Y_LEN - SLIDE_CLEAR - 0.01, -0.005])
          cube([FLANGE_W - 2*SLIDE_CLEAR, 0.01, 0.01]);
      }
    }
    // Right corner (X+)
    intersection() {
      hull() {
        translate([OUT_L - WALL - FLANGE_W + SLIDE_CLEAR, LID_Y_LEN - FLANGE_W + SLIDE_CLEAR, 0])
          cube([0.01, FLANGE_W - 2*SLIDE_CLEAR, FLANGE_H - SLIDE_CLEAR]);
        translate([OUT_L - WALL - SLIDE_CLEAR - 0.01, LID_Y_LEN - FLANGE_W + SLIDE_CLEAR, -0.005])
          cube([0.01, FLANGE_W - 2*SLIDE_CLEAR, 0.01]);
      }
      hull() {
        translate([OUT_L - WALL - FLANGE_W + SLIDE_CLEAR, LID_Y_LEN - FLANGE_W + SLIDE_CLEAR, 0])
          cube([FLANGE_W - 2*SLIDE_CLEAR, 0.01, FLANGE_H - SLIDE_CLEAR]);
        translate([OUT_L - WALL - FLANGE_W + SLIDE_CLEAR, LID_Y_LEN - SLIDE_CLEAR - 0.01, -0.005])
          cube([FLANGE_W - 2*SLIDE_CLEAR, 0.01, 0.01]);
      }
    }
  }

  color("#004B49")
  difference() {
    union() {
      if (!EPD_IS_LID)
        // Flat ceiling plate — test fit without epd_case geometry
        translate([0, -WALL, FLANGE_H])
          rounded_box(OUT_L, OUT_W, LID_T, CORNER_R);
      else
        translate([
          OUT_L/2 - epd_case_w/2,
          OUT_W - epd_case_d - WALL,
          LID_T
        ])
          epd_case();

      // Y- lip — same rounded_box profile clipped to the Y- wall zone so the
      // lip corners match the base exterior corners
      intersection() {
        translate([0, -WALL, -SLIDE_CLEAR])
          rounded_box(OUT_L, OUT_W, FLANGE_H + SLIDE_CLEAR, CORNER_R);
        translate([-0.1, -WALL - 0.1, -SLIDE_CLEAR - 0.1])
          cube([OUT_L + 0.2, WALL + 0.2, FLANGE_H + SLIDE_CLEAR + 0.2]);
      }
    }

    // FPC cable slot — from Y+ face of U-rib bottom bar, FPC_SLOT_W toward Y+
    translate([PCB_OX + FPC_CX - FPC_NOTCH_W/2,
               LID_Y_LEN - 3 - FPC_U_DEPTH + FPC_U_T,
               FLANGE_H - 0.1])
      cube([FPC_NOTCH_W, FPC_SLOT_W, LID_T + 0.2]);
  }

  // Display mockup — seated inside epd_case, preview only
  if ($preview && EPD_IS_LID && SHOW_DISP)
    translate([
      OUT_L/2 - epd_case_w/2 + WALL + TOL,
      OUT_W - epd_case_d - WALL + BEZEL_Y,
      LID_T + WALL
    ])
      GDEY0583T81(fpc_bend_start=0, fpc_bend_r=FPC_BEND_R, fpc_post_clip=2);
}

// ============================================================
//  RENDER
// ============================================================
lid();