[reprap-play.git] / fairphone4-case.scad

// -*- C -*-

// Hard case for Fairphone 2
//
//  Copyright 2018 Ian Jackson.  There is NO WARRANTY.
//  See below for full licensing and disclaimer.
//
// Instructions
//
//  1. You will want to git clone this repository.
//
//  2. Decide about the notification LED aperture. See the variable
//     led_window_style, below.  The default here is "ad-hoc
//     multi-colour", which can produces a translucent (clear-ish)
//     window set into the lid, even on a single-nozzle printer.
//     See "Ad-hoc multi-colour", below.
//
//  3. use "make" to generate the necessary files:
//
//     make -j8 fairphone-case.auto.scads `for f in   \
//        HingePrint        \
//        LidWindowPrint    \
//        LidPrint          \
//        OneKeeperPrint    \
//        Case              \
//     ; do echo fairphone-case,$f.auto.stl; done`
//
//  4. Print them.  Case and OneKeeperPrint should probably be
//     the same colour.
//
//     For Lid and LidWindowPrint, if you are doing ad-hoc
//     multi-colour:
//        i.   Set up for clear filament
//        ii.  Print LidWindowPrint.  Wait for it to finish.
//             It won't take long.  As soon as it finishes, tell
//             your printer to warm up (so that in fact it does
//             not cool down).
//        iii. Leaving the output so far on the printbed, reload
//             your printer with the main lid colour.
//        iv.  Print LidPrint.  You can let this go unattended.
//
//  5. Assemble the hinge.  You will need 4x M2 12mm machine screws
//     and 8x M2 full nuts.
//
//     Make sure you get the hinge the right way round.  If you're not
//     sure, run
//         openscad fairphone-case,DemoHinge.auto.scad
//     to see an assembly diagram.
//
//     The nuts recess into the hinge.  You will want very fine
//     pliers.  As you screw each screw in, add the second nut when
//     the screw thread emerges from the first - this will be a
//     locknut.  Screw each screw to an appropriate tightness for the
//     hinge stiffness.  You want the lid-side hinge to be stiffer as
//     that makes closing the case work better.
//
//     When you have the stiffness right, tighten the locknuts onto
//     each first nut.
//
//  6. In use:
// 
//      - To put the phone in, drop its RH side into the RH side of
//        the case.  Then feed the keeper through the small hole.
//        Feed it right through.
//
//      - The optional prop can be used to prop the phone up (in
//        portrait orientation only right now).  See
//            openscad fairphone-case,DemoPropAngles.auto.scad
//
// Ad-hoc multi-colour
//     
//  This file is set up to let you make a translucent window using a
//  single-extruder printer, using a "two print run" technique.  This
//  works well with our Lulzbot TAZ 5 and Aleph Objects' version of
//  Cura.  If you are using a different printer, you may need to
//  adjust the parameters or try a different technique.  In particular,
//      initial_layer_thick
//         set so that the window is one layer thick
//      initial_layer_width
//         set so that the slicer draws a rectangle around the whole
//         object, rather than putting a "skirt" or anything inside
//
//  If you have a dual-extruder printer, you can set led_window_style
//  to 2 and do a single print of LidPrint and LidWindowPrint.
//
//  Alternatively you can set it to 1 (just a hole) or 0 (no hole).
//
//  Thanks to Clare Boothby for the ad-hoc multi-colour technique (and
//  the parameters for our Lulzbot TAZ 5 and Aleph Objects's Cura).
//
// Other phones
//
//  It might well be possible to adapt this file for other phones.
//  If you do, let me know how you get on.
//
//
// AUTHORSHIP, COPYRIGHT, LICENCE, AND LACK OF WARRANTY
//
//   Copyright (C)2018 Ian Jackson.
//
//    This program for generating a 3D model is free software: you can
//    redistribute it and/or modify it under the terms of the GNU
//    General Public License as published by the Free Software
//    Foundation, either version 3 of the License, or (at your option)
//    any later version.
//
//    This program is distributed in the hope that it will be useful,
//    but WITHOUT ANY WARRANTY; without even the implied warranty of
//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//    GNU General Public License for more details.
//
//    You should have received a copy of the GNU General Public
//    License along with this program.  If not, see
//    <http://www.gnu.org/licenses/>.
//
//  In particular DO NOT BLAME ME IF THIS CASE DOES NOT ADEQUATELY
//  PROTECT YOUR PHONE !  It is your responsibility to decide whether
//  this case will meet your needs.

include <utils.scad>
include <funcs.scad>

phone = [ 75.86, 162.0 ];

prop_buildout_less = 3;

prop_angles = [ 15, 30, 45, 60 ];

bumper = [ 0.250, -0.025 ];
// ^ One side.  Overall size is increased by twice this.
// If no bumpers, is the gap around the phone.

enable_support = 1;

led_window_style = 0;
// 0: no window
// 1: simply an opening
// 2: opening with separate cover model, for printing in clear (two colour)
// 3: like 2 but one-layer window for ad-hoc multi-colour

initial_layer_thick = 0.400; // ^ needed for mode 3 only
initial_layer_width = 0.750; // ^ needed for mode 3 only
multicolour_gap = 0.15; // each side

phone_cnr_rad = 7.0; // actuall 8.mumble, but smaller is fine
phone_rim_depth = 0.01; // includes allowance for a screen protector

button_cutout_depth = 9;

phone_edge_thick = 11.25;

camera_pos_tl = [  6.600,  6.750 ]; // from tl corner (as seen from back)
camera_edge_rad = 9.750;
camera_sz = 32.920 + .750;

// this is disabled, FP4 doesn't have one
jack_pos = [ 13.83, 8.485 ];
jack_dia = 10.64 + .5; // some jack I had lying around

// this led stuff, is irrelevant, we have disabled it as it doesn't have one
led_pos = []; // [ 13.98, 10.00 ];
led_aperture = 9;
led_window_ledge = 0.75; // each side

noisecancelmic_pos = [ 15.08 + .720, 4.35 ];   // from rhs, from top edge
noisecancelmic_dia = 4.00;

mainmic_pos = [ 21.5, 3.45 ];   // from lhs, from top edge
mainmic_dia = 4.00;

lhshole_pos = [ phone[1]/2 - 0.80, 4.35 ];

// fingerpushhole_dias = [];
fingerpushhole_dias = [ 15, 18 ]; // this is for testing

lanyard_half_dia = 1.15;
lanyard_entry_rel_breadth = 2;
lanyard_channel_len = 8;
//rearspeaker_pos_bl = [ 12.64, 18.72 ];
//rearspeaker_size   = [  3.76,  7.36 ];

bottomspeaker_size = [ 12.35, 1.40 ] + [1,1] * 0.5;
bottomspeaker_pos = [ 18.05, 5.52 ]; // from rhs, from top

microusb_above = 1.64 - 0.25;
microusb_below = 2.42;
microusb_width = 12.16 + 2.0 + 1.25;

case_th_bottom = 2.5;
case_th_lid = 3.0;
case_th_side = 2.3;
case_th_lip = 1.2;

lid_screen_gap_extra = .66;

case_struts_count = 6;
case_struts_solid_below = 1.00;
case_struts_solid_above = 0.75;
case_struts_width = 0.10;

keeper_th_z = 0.75;
keeper_th_x = 0.75;
keeper_inner_width = 2.75;
keeper_inner_height = 2.75;
keeper_slant_slope = 2; // larger means steeper

keeper_gap_z_top = 0.25;
keeper_gap_z_bot = 0.75;
keeper_gap_x     = 0.25;
keeper_gap_x_holes = 0.75;

keeper_side = 0; // 0 = lhs; 1 = rhs

case_lip = 1.25;

lid_gap_x = 0.25;
lid_gap_z = 0.25;
lid_lip = 1.75;
lid_edgepart_width = 5.0;
lid_buttoncover_thick = 1.3;
lid_buttoncover_reinf = 0.65;

foldover_gap = 0.50;
foldover_lever_gap = 0.50;

// properties of the hinge fasteners
hingescrew_shaft_dia = 2.0 + 0.25; // M2 x 12mm machine screw
hingescrew_shaft_len = 12;
hingescrew_fasteners_extra_thick = 0.40;
// ^ amount of thread protruding if everything was completely nominal
//   and we are using two nuts
hingescrew_nut_access_dia = 4.72 + 0.50;
// ^ washer is 4.72 dia
//   also, want to get pliers or tiny spanner in to do up locknut
hingescrew_nut_across = 3.92 + 0.25; // incl. slop around recess slop
hingescrew_nut_thick = 1.93;
hingescrew_head_th = 1.38 + 0.75;
hingescrew_head_dia = 3.92;

hingescrew_nut_recess_portion = 2/3; // portion of nut in recess

lever_cover_th = 0.75;
hingemount_th = 2.5;
hingemount_wd = 4.8725;

$fa = 5;
$fs = 0.1;

button_l_fudge = 4.4;
buttonishleg_default_l_is_fudge = 10;

hinge_base_slope = 1.5; // bigger is steeper

strut_min_at_end = 1.5;

hinge_x_gap = 0.125;
hinge_x_postscrew_gap = 0.75;
hinge_x_arms_gap = 0.35;
hinge_r_arms_gap = 0.55;
hinge_over_nut_plate = 1.0;

// there isn't one of these, speaker is by hinge
// rearspeaker_gap    = [ 2.0, 2.0 ]; // each side

thumbrecess_depth = 1.3;
thumbrecess_width = 16.5;
thumbrecess_topcurve_r = 5.0;

prop_recess_under = 0.50;
prop_recess_slop = 0.200; // each side
prop_end_dia = 0.5;
prop_main_th = 3;
prop_taper_len = 6;
prop_main_width = 4;
prop_side_gap = 0.75; // each side
prop_lidrecess_behind = 0.75;
prop_caserecess_behind = 0.75;
prop_caserecess_taper = 0.45; // one side only
prop_prop_gap = 0.5;
prop_prong_heel_slope = 0.5;

lid_fold_clearance_antislop = 0.5;

$button_leg_only = false;
$suppress_forward_holes = false;

// ---------- calculated ----------

phone_total_thick = phone_edge_thick;

phone_width =  (phone + bumper*2)[0];
phone_height = (phone + bumper*2)[1];

inside_br = [phone_width, -phone_height];

prop_prong_h = prop_main_th;

//echo(camera_pos_tl + bumper,
//     camera_pos_br + bumper);

// ----- could be changed -----
lid_buttoncover_gap = lid_gap_x;
lid_buttoncover_overlap = case_th_lip + keeper_gap_z_top;

//prop_lidrecess_depth = case_th_lid - prop_recess_under;

//prop_nose_len = case_th_lid - prop_recess_under;
//prop_recess_slope = tan(prop_max_angle); // bigger means steeper
//prop_recess_width = prop_main_th / cos(prop_max_angle) + prop_backfwd_gap;


epp0 = [0,0];
epp1 = [0, -phone_edge_thick];
epp2i = epp1; // conflated for FP4
epp2o = epp2i;
epp3 = epp2i + [10, 0];
epp5 = epp0 + [0,1] * (keeper_th_z + keeper_gap_z_top + case_lip);
epp4 = epp5 + [-1,0] * case_th_side;

kppe = [0,0];
kppd = kppe + [1,0] * keeper_inner_width;
kppc = kppd + [0,1] * keeper_th_z;
kppb = [ kppe[0] - keeper_th_x, kppc[1] ];
kppf = kppe - [0,1] * keeper_inner_height;
kppa = [ kppb[0], kppf[1] ];

lpp10 = [ epp5[0] + lid_gap_x, kppc[1] + lid_gap_z ];
lpp11 = [ lpp10[0],            epp5[1] + lid_gap_z ];

lpp14 = lpp10 + [1,0] * max(keeper_inner_width, lid_edgepart_width);
// exact x posn not very important; must extend past end of keeper

lpp15 = [ lpp14[0],
          epp0[1] - phone_rim_depth + 1/2.5 * case_th_lid
          + lid_screen_gap_extra ];
// ^ beam theory says to maximise force before contact,
//   the gap below the `beam' (the lid) must be 1/3
//   the thickness (ie the lid thickness) if the beam
//   is solid, or 1/2 if it has a top and bottom only.
//   ours is mostly solid.

lp_r12 = max(case_th_lid - (lpp11[1] - lpp15[1]),
             case_th_lip);

lpp12 = [ epp4[0] + lp_r12,    lpp11[1] ];
lpp13 = [ lpp12[0],            lpp12[1] + lp_r12 ];

case_bottom_z = epp2o[1] - case_th_bottom;

// button profile
bppM = epp4 + [0,5];
bppN = [ bppM[0] + lid_buttoncover_thick, bppM[1] ];
bppR = [ bppN[0] + lid_buttoncover_gap, -button_cutout_depth ];
bppS = [ epp1[0], bppR[1] ];
bppQ = [ bppM[0], bppR[1] - lid_buttoncover_overlap ];
bppP = bppQ + [0,1] * lid_buttoncover_gap;
bppO = [ bppN[0], bppP[1] ];
bppL = lpp10 + [5,0];
bppK = [ bppL[0], bppN[1] ];
bppJ = [ bppN[0], bppL[1] ];
bppU = [ bppJ[0], lpp12[1] ];
bppV = lpp11;
bppW = lpp10;

echo("BUTTON COVER TH", bppO[0] - bppP[0]);

// notification led aperture

nla_r0 = led_aperture/2;
nla_r1 = nla_r0 + led_window_ledge;
nla_r2 = nla_r1 + multicolour_gap;
nla_t =
  led_window_style >= 3 ? initial_layer_thick :
  led_window_style >= 2 ? led_window_ledge : 0;


// hinge plan
hp_rn = hingescrew_nut_access_dia/2;
hp_r2_min = hp_rn + lever_cover_th;
hp_rs = hingescrew_shaft_dia/2;
hp_r1_min = hp_rs + hingemount_th;

hp_r1 = max(hp_r1_min, hp_r2_min);
hp_r2 = hp_r1;

hppU = lpp13;
hppS = epp2o + [0,-1] * case_th_bottom;
hp_k = 0.5 * (hppU[1] - hppS[1] + foldover_gap);

hppM = [ epp4[0] - foldover_lever_gap - hp_r2,
         0.5 * (hppU + hppS)[1] ];
hppT = [ hppM[0], hppU[1] - hp_r1 ];
hppB = hppT + [0,-1] * hp_k;

hppE_y = epp2o[1] - case_th_bottom + hp_r1;
hppE_x = hppB[0] + (hppB[1] - hppE_y) * hinge_base_slope;
hppE = [ hppE_x, hppE_y ];

// hinge elevation x coords

hex20 = max(epp2o[0],
            phone_cnr_rad,
            kppd[0] + hingescrew_head_th + keeper_gap_x_holes);
hex21 = hex20 + hingemount_wd;
hex22 = hex21 + hinge_x_gap;
hex27 = hex20 + hingescrew_shaft_len;
hex24 = hex27 + hinge_x_postscrew_gap;
hex23 = hex27 - (hingescrew_nut_thick*2
                 + hingescrew_fasteners_extra_thick);
hex26 = hex23 + hingescrew_nut_thick * 2/3;

//echo(hex20, hex21, hex22, hex23, hex24);
////  6, 10.8725, 10.9975, 13.74, 18.75
//module chk(act,exp) {
//  if (abs(act-exp) > 1e-9) echo("WRONG", act, exp);
//  else echo("ok", act);
//}
//chk(hex20, 6);
//chk(hex21, 10.8725);
//chk(hex22, 10.9975);
//chk(hex23, 13.74);
//chk(hex24, 18.75);

lid_fold_clearance_skew =
  (lpp10[1] - hppB[1]) /
  (lpp10[0] - hppB[0]);

echo("SK",lid_fold_clearance_skew);

// thumb recess (used to be "catch" hence cpp*

cppA = epp4 + [thumbrecess_depth, 0];
cppB = [ cppA[0], epp1[1] ];

// lanyard

ly_r = lanyard_half_dia / 2;
ly_rc = ly_r * 2;

ly_theta = 90;
ly_o = epp2i + 3 * ly_r * [0,1];

max_case_bottom_edge_thickness =
  case_th_bottom;

ly_q_z = -(ly_rc + ly_r);
ly_re = max_case_bottom_edge_thickness - (-ly_q_z);

ly_oec_y = lanyard_entry_rel_breadth * ly_r;

// prop recess in case

prop_x_pos = phone_width/2;

prop_recess_hw = 0.5 * prop_main_width + prop_side_gap;

prc_r1 = prop_end_dia/2;
prc_r3 = prc_r1 + prop_recess_slop;

prcp2 = [ epp4[0] + prop_buildout_less,
          case_bottom_z ];

prop_caserecess_buildout_r = -1; // prcp2[0] - epp2o[0];

prcp1 = [ epp2o[0] + prc_r3 + prop_caserecess_behind,
          epp2i[1] - prc_r3 - prop_recess_under];

// prop recess in lid

prl_r10 = prop_end_dia/2;
prl_r10o = prl_r10 + prop_recess_slop;

prlp10 = lpp10 + [1,1] * prl_r10o
  + [1,0] * prop_lidrecess_behind
  + [0,1] * prop_recess_under;

// prop

$prpp10 = [0,0];
$prpp11 = [0, prop_taper_len];

$prp_r10 = prl_r10;

// ---------- modules ----------

module AdhocMultiprintFrame(phase, z0, zs) {
  // from z0 to z0 + zs*layer
  extra = phase * (initial_layer_width + multicolour_gap) + 5;
  xextra = extra + -epp4[0];
  xrange = [ 0, phone_width ] + [-1,+1] * xextra;
  yextra = extra + -epp4[0];
  yrange = [ -phone_height + +hppB[0] - hp_r2, 0 ] + [-1,+1] * yextra;
  p0 = [ xrange[0], yrange[0] ];
  p1 = [ xrange[1], yrange[1] ];
  echo(p0, p1);
  translate([0,0, z0])
    mirror([0,0, zs<0 ? 1 : 0])
    linear_extrude(height= initial_layer_thick)
    difference(){
      rectfromto(p0 - [1,1] * initial_layer_width,
                 p1 + [1,1] * initial_layer_width);
      rectfromto(p0, p1);
    }
}

module KeeperProfile(slant=0){
  use_e = kppe + [0,-1] * slant * keeper_inner_width / keeper_slant_slope;
  polygon([use_e, kppd, kppc, kppb, kppa, kppf]);
}

module EdgeProfile(){
  difference(){
    hull(){
      translate(epp3) square(case_th_bottom*2, center=true);
      circleat(epp2o, r=case_th_bottom);
      circleat(epp1, r=case_th_side);
      rectfromto(epp0, epp4);
    }
    polygon([ epp5 + [0,10],
              epp1,
              epp3 + [10,0] ]);
  }
}

module LanyardLanyardProfile(entry=false){
  hull(){
    for (xs=[-1,+1] * (entry ? lanyard_entry_rel_breadth : 1))
      translate(xs * 0.5 * lanyard_half_dia * [1,0])
        circle(r= lanyard_half_dia/2);
  }
}

module LanyardCurveChannelProfile(){
  translate([0, -ly_r])
    LanyardLanyardProfile();
}  

module LanyardEntryChannelProfile(){
  LanyardLanyardProfile(true);
}  

module LanyardMainChannelProfile(){
  LanyardCurveChannelProfile();
  difference(){
    square(center=true, ly_r * [6, 2]);
    for (xs=[-1,+1])
      translate(ly_r * [3 * xs, -1])
        circle(r = ly_r);
  }
}

module LanyardEntryOuterProfile(){
  circleat([ly_re + ly_r, 0], ly_re);
}

module LanyardEntry(){
  q_z = ly_q_z;
  oec_y = ly_oec_y;

  d_x = -ly_rc;

  translate([d_x, 0, q_z]) {
    intersection(){
      rotate([90,0,0])
        rotate_extrude(convexity=10)
        rotate(90)
        translate([0, -q_z])
        LanyardCurveChannelProfile();
      translate([0,-10,0])
        cube([20,20,20]);
    }
  }

  mirror([0,0,1])
    translate([0,0,-1])
    linear_extrude(height=20)
    rotate(-90)
    LanyardEntryChannelProfile();

  translate([0, ly_r*2, 0])
    rotate([90,0,0])
    linear_extrude(height = ly_r*4){
    difference(){
      rectfromto([d_x, q_z], [ly_r, 0]);
      circleat([d_x, q_z], ly_rc);
    }
  }

  translate([0,0,q_z]){
    for (my=[0,1])
      mirror([0,my,0]){
        translate([0, oec_y, 0]){
          difference(){
            translate(ly_re * [-1,0,-2])
              cube(ly_re * [2,1,2]);
            rotate_extrude(convexity=10)
              LanyardEntryOuterProfile();
          }
        }
      }
    difference(){
      translate([-ly_re, -(oec_y + 0.01), -2*ly_re])
        cube([ly_re*2, 2*(oec_y + 0.01), 2*ly_re]);
      for (mx=[0,1])
        mirror([mx,0,0])
          rotate([90,0,0])
          translate([0,0,-10])
          linear_extrude(height=20)
          LanyardEntryOuterProfile();
    }
  }
}

module LanyardCutout(l){
  rotate([0,-90,0])
    linear_extrude(height=l)
    rotate(-90)
    LanyardMainChannelProfile();

  for (ee=[0,1]){
    translate(ee * l * [-1,0])
      mirror([ee,0,0])
      LanyardEntry();
  }
}

module LidEdgeProfile(){
  polygon([ lpp10,
            lpp11,
            lpp12,
            lpp13,
            lpp13 + [10, 0],
            lpp15 + [10, 0],
            lpp15,
            lpp14,
            ]);
  intersection(){
    circleat(lpp12, r=lp_r12);
    rectfromto( lpp12 + [-10,   0],
                lpp12 + [+10, +10] );
  }
}

module LidEdgeFoldClearanceProfile(){
  translate([-lid_fold_clearance_antislop, 0])
    polygon([ lpp10,
              lpp11,
              lpp11 + [-20,  0],
              lpp11 + [-20, 20],
              lpp11 + [+20, 20],
              lpp10 + [+20,  0] ]);
}

module ButtonCoverProfile(){
  intersection(){
    polygon(concat([ bppM, bppP, bppO, bppJ ],
                   (enable_support && !$button_suppress_over_keeper
                    ? [ bppU, bppV, bppW ] : []),
                   [ bppL, bppK ]));
    hull(){
      EdgeProfile();
      LidEdgeProfile();
    }
  }
}

module ButtonPlan(l, deep, cut){
  epsilon =
    (cut  ? 0 : lid_buttoncover_gap);

  delta =
    (deep ? lid_buttoncover_overlap : 0);

  C = [0,0]; // by definition
  T = [ 0, epp4[1] ];
  G = T + [0,10];

  B0 = C + [0,-1] * button_cutout_depth;
  B1 = B0 + [0,1] * epsilon;

  r0 = 0.5 * (T[1] - B0[1]);
  A = [  -(l + button_l_fudge)/2 + r0, 0.5 * (T[1] + B0[1]) ];
  H = A + [0,-1] * delta;

  D = A + [-2,0] * r0;
  F = D + [0,10];

  E0 = 0.5 * (D + A);
  E1 = E0 + [1,0] * epsilon;

  I0 = [ E0[0], H[1] ];
  I1 = [ E1[0], H[1] ];

  hull(){
    for (m=[0,1]) mirror([m,0])
      circleat(H, r0 - epsilon);
  }
  for (m=[0,1]) mirror([m,0]) {
    difference(){
      polygon([ E1,
                I1,
                H,
                B1,
                G,
                F,
                D
                ]);
      circleat(D, r0 + epsilon);
    }
  }
}

module ButtonCoverReinf(){ ////toplevel
  minkowski(){
    rotate([90,0,0])
      linear_extrude(height=0.01)
      intersection(){
        ButtonCoverProfile();
        translate([bppJ[0] + 0.1, -50]) mirror([1,0])
          square([100,100]);
    }
    mirror([0,0,1]) linear_extrude(height=0.01) intersection(){
      circle(r= lid_buttoncover_reinf);
      translate([-20,0]) square(40, center=true);
    }
  }
}

module ThumbRecessCutProfile(){
  difference(){
    polygon([ cppA + [-10,0],
              cppB + [-10,0],
              cppB,
              cppA ]);
    circleat(epp1, r=case_th_side);
  }
}

module Flip_rhs(yn=[0,1]) {
  for ($rhsflip=yn) {
    translate([phone_width/2, 0, 0])
      mirror([$rhsflip,0,0])
      translate([-phone_width/2, 0, 0])
      children();
  }
}

module Flip_bot(yn=[0,1]) {
  for ($botflip=yn) {
    translate([0, -phone_height/2, 0])
      mirror([0, $botflip, 0])
      translate([0, phone_height/2, 0])
      children();
  }
}  

module AroundEdges(fill_zstart, fill_th, fill_downwards=0){
  // sides
  Flip_rhs(){
    translate([0, -phone_cnr_rad, 0])
      rotate([90,0,0])
      linear_extrude(height = phone_height - phone_cnr_rad*2)
      children(0);
  }
  // corners
  Flip_rhs() Flip_bot() {
    translate([+1,-1] * phone_cnr_rad)
      intersection(){
        rotate_extrude()
          intersection(){
            mirror([1,0,0])
              translate([-1,0] * phone_cnr_rad)
              children(0);
            rectfromto([0,-20],[10,20]);
          }
        translate([-10, 0, -20] + 0.01 * [+1,-1, 0] )
          cube([10,10,40]);
      }
  }
  // top and bottom
  Flip_bot(){
    translate([ phone_width - phone_cnr_rad, 0,0 ])
      rotate([90,0,-90])
      linear_extrude(height = phone_width - phone_cnr_rad*2)
      children(0);
  }
  // fill
  translate([0,0, fill_zstart])
    mirror([0,0, fill_downwards])
    linear_extrude(height = fill_th)
    rectfromto([+1,-1] * phone_cnr_rad,
               [phone_width, -phone_height] + [-1,+1] * phone_cnr_rad);
}

module CaseAperture(pos, dia, $fn, topbottom=0) {
  theta = 180/$fn;
  translate([ bumper[0],
              -epp2i[0],
               0 ])
    rotate([0,0, 90*topbottom])
    translate([ pos[0] * (topbottom>0 ? -1 : +1), 0, -pos[1] ])
    rotate([-90, theta, 0])
    cylinder(r = dia/2 / cos(theta),
             h = 60);
}

module SideButton(y, y_ref_sign, l, suppress_over_keeper=0){
  // y_ref_sign:
  //   +1  measured from top    of actual phone to top    of button
  //   -1  measured from bottom of actual phone to bottom of button
  //    0  y is centre of button in coordinate system
  $button_l= l;
  $button_suppress_over_keeper= suppress_over_keeper;
  eff_y = y_ref_sign > 0 ?         -bumper [1] -y -l/2 :
          y_ref_sign < 0 ? (-phone -bumper)[1] +y +l/2 :
          y;
  //echo(eff_y);
  translate([0, eff_y, 0])
    children();
}

module LidButtonishLeg(y, y_ref_sign, l=buttonishleg_default_l_is_fudge) {
  $button_leg_only = true;
  SideButton(y, y_ref_sign, l) children();
}

module Buttons(){
  Flip_rhs(1) SideButton(30.320, +1, 22.960  ) children(); // volume
  Flip_rhs(1) SideButton(64.220, +1, 14.500  ) children(); // power
  Flip_rhs(1) LidButtonishLeg(14, -1) children();
  Flip_rhs(0) LidButtonishLeg(21, -1) children();
  Flip_rhs(0) LidButtonishLeg(21, +1) children();
}

module Struts(x_start, z_min, th){
  // if th is negative, starts at z_min and works towards -ve z
  // and object should then be printed other way up
  for (i= [1 : 1 : case_struts_count]) {
    translate([0,
               0,
               z_min])
      mirror([0,0, th<0 ? 1 : 0])
      translate([0,
                 -phone_height * i / (case_struts_count+1),
                 case_struts_solid_below])
      linear_extrude(height= abs(th)
                     -(case_struts_solid_below+case_struts_solid_above))
      rectfromto([               x_start, -0.5 * case_struts_width ],
                 [ phone_width - x_start, +0.5 * case_struts_width ]);
  }
}

module OrdinaryRearAperture(rhs,bot, pos){
  Flip_rhs(rhs) Flip_bot(bot)
    linextr(-20, 20)
    mirror([0,1])
    translate(pos + bumper)
    children();
}

module MicroUSBEtc(){
  Flip_bot(1){
    rotate([90,0,0])
      mirror([0,0,1])
      linextr(-epp2i[0], 60)
      translate([0.5 * phone_width, 0, 0])
      rectfromto([-microusb_width/2, epp2i[1] + microusb_below],
                 [+microusb_width/2, epp0[1] + -microusb_above]);
  }
}

module OrdinaryBottomEdgeApertures(){
  Flip_bot(1)
    CaseAperture(mainmic_pos, mainmic_dia, 8);

  Flip_bot(1) Flip_rhs(1) {
    linextr_y_xz(-epp2i[0], 60)
      hull()
      for (x= [-1,+1]) {
        translate([ -bottomspeaker_pos[0], -bottomspeaker_pos[1] ] +
                  [ 0.5 * x * bottomspeaker_size[0] - bottomspeaker_size[1],
                    0 ])
          rotate(360/16)
          circle(r = bottomspeaker_size[1], $fn = 8);
      }
  }
}

module OrdinaryRearApertures(){
  // rear speaker
  //  OrdinaryRearAperture(1,1, rearspeaker_pos_bl)
  //    rectfromto(-rearspeaker_gap,
  //           rearspeaker_size + rearspeaker_gap);
}

module NotInTestFrameRearApertures(){
  // finger hole to remove phone
  if (len(fingerpushhole_dias))
    OrdinaryRearAperture(0,0, [ fingerpushhole_dias[0] + epp2i[0],
                                phone[1]/2 ])
    scale(fingerpushhole_dias)
    circle(r= 0.5 );
}

module RearCameraAperture(){
  Flip_rhs(1)
    mirror([0, 0, 1])
    translate([0,0,0])
    hull() // there is some kind of bug if hull() is done in 2D here!
    linear_extrude(height = 20)
    mirror([0, 1, 0])
    translate(bumper)
    translate(camera_pos_tl)
    for (xy = [ [0,0], [0,1], [1,0] ]) {
      translate(
          camera_edge_rad * [1,1] +
          xy * (camera_sz - camera_edge_rad * 2)
                )
        circle(r = camera_edge_rad);
    }
}

module HingeLidProfile(){
  hull(){
    circleat(hppT, hp_r1);
    circleat(lpp12, lp_r12);
    polygon([lpp10,
             lpp13 + [2,0],
             lpp12,
             hppT]);
  }
}

module HingeBaseProfile(){
  difference(){
    hull(){
      circleat(hppB, hp_r1);
      circleat(hppE, hp_r1);
      circleat(epp2o, case_th_bottom);
      circleat(hppB + [10,0], hp_r1);
    }
    polygon([epp5, epp1, epp3, bppL]);
  }
}

module HingeLeverOuterProfile(){
  hull(){
    circleat(hppT, hp_r2);
    circleat(hppB, hp_r2);
  }
}

module HingeLeverInnerProfile(){
  for (s = [-1,+1]) {
    c = s > 0 ? hppT : hppB;
    translate(c)
      mirror([0,0, s>0 ? 1 : 0])
      rotate(s<0 ? -40 : 0)
      hull()
      for (x=[-20,20])
        for (y=[0, s * 10])
          translate([x,y])
            circle(hp_rn);
  }
}

module HingeLeverNutProfile(){
  for (c= [hppB, hppT]) {
    translate(c)
      circle($fn=6, r= 0.5 * hingescrew_nut_across / cos(30));
  }
}

module Flip_hinge(doflip=1){
  hinge_origin = [0, -(phone_height - hppB[0]), hppB[1]];
  translate(hinge_origin)
    rotate([doflip*180,0,0])
    translate(-hinge_origin)
    children();
}

module HingePortion(x0,x1){
  Flip_rhs() Flip_bot(1)
    translate([x0,0,0])
    mirror([1,0,0])
    rotate([90,0,-90])
    linear_extrude(height=x1-x0)
    children();
}

module ThumbRecessApply(ztop){
  width = thumbrecess_width;
  w = width + thumbrecess_topcurve_r*2 + 1;
  translate([phone_width/2, 0,0]){
    difference(){
      rotate([90,0,-90])
        linextr(-w/2, w/2)
        children(0);
      translate([0, 50, 0])
        rotate([90,0,0])
        linear_extrude(height=100){
        for (m=[0,1]) mirror([m,0,0]) {
          hull(){
            translate([w/2, ztop - thumbrecess_topcurve_r])
              circle(thumbrecess_topcurve_r);
            translate([w/2, -50])
              square(thumbrecess_topcurve_r*2, center=true);
          }
        }
      }
    }
  }
}

module CaseBase(){
  AroundEdges(epp3[1], case_th_bottom, 1)
    EdgeProfile();
}

function prop_x(gamma) = hp_k / (2 * sin(gamma/2)) - hppT[0];

module PropProfileAssignments(gamma){
  // https://en.wikipedia.org/wiki/Solution_of_triangles#Two_sides_and_the_included_angle_given_(SAS)
  x = prop_x(gamma);
  p = phone_height + prlp10[0] - hppB[0];
  b = p + x;

  q = phone_height - hppT[0] - prcp1[0]; // $prpp7[0] is 0 by definition
  a = q + x;
  c = sqrt(a*a + b*b - 2*a*b*cos(gamma));
  $prp_alpha = acos( (b*b + c*c - a*a) / (2*b*c) );

  $prp_theta = 90 - $prp_alpha;
  beta = 180 - $prp_alpha - gamma;
  psi = 90 - beta;

  //echo("abc", a,b,c);

  v1 = [ [ cos(psi), -sin(psi) ],    // x
         [ sin(psi),  cos(psi) ] ];  // y

  $prpp7 = [0, c + (lpp13[1] - $prpp10[1] - hp_k) ];

  $prp_r1 = prc_r1;
  $prp_r11 = prop_main_th/2;

  $prpp1 = $prpp7 + [1,0] *
    // this is approximate, but will do
    (prop_main_th/2 + prop_prop_gap + prcp1[0] - cppA[0]);
  $prpp3 = $prpp1 +
    v1[0] * -$prp_r1 +
    v1[1] * ((prcp2[1] - prcp1[1]) - prop_prop_gap);
  $prpp12 = $prpp3 + v1[0] *
    (prop_end_dia + prop_caserecess_taper * ($prpp1[1] - $prpp3[1]));
  $prp_r8 = prop_main_th;
  $prpp4 = [ prop_main_th/2, $prpp3[1] ];
  $prp_r5 = $prp_r8;
  $prpp5 = [ $prpp12[0] - $prp_r5,
            $prpp3[1] - prop_prong_h + $prp_r5 ];
  $prpp6 = $prpp4 + [0,-1] * (prop_prong_h +
         prop_prong_heel_slope * ($prpp5[0] - $prpp4[0]));
  $prpp8 = $prpp4 + [0,-1] * $prp_r8;
  $prpp9 = $prpp8 + [-1,0] * $prp_r8;

  children();
}

module PropProfile(gamma, cut=0, rot=0){
  PropProfileAssignments(gamma){

    //#circleat($prpp3,1);
    //#circleat($prpp12,1);

    if (!cut) {
      hull(){
        translate($prpp8)
          intersection(){
            circle($prp_r8);
            polygon([[-20,-0], [20,20], [0,0]]);
          }
        rectfromto($prpp6, $prpp9);
        translate($prpp5) intersection(){
          circle($prp_r5);
          polygon([[-10,-10], [0,0], [10,0]]);
        }
        rectfromto($prpp12 + [0,-0.1], $prpp3);
      }
      hull(){
        circleat($prpp1, $prp_r1);
        rectfromto($prpp12 + [0,-0.1], $prpp3);
      }
    }
    // main shaft
    rotate([0,0, rot*-$prp_theta]){
      hull(){
        extra = cut ? prop_recess_slop : 0;
        rectfromto($prpp6, $prpp9);
        circleat($prpp11, $prp_r11 + extra);
        circleat($prpp10, $prp_r10 + extra);
      }
    }
  }
}

module PropAggregateProfile(){
  for (angle = prop_angles)
    PropProfile(angle, 0,0);
}

module Prop(){ ////toplevel
  hw = prop_main_width/2;
  linextr(-hw, +hw)
    PropAggregateProfile();
}

module Case(){ ////toplevel
  difference(){
    union(){
      CaseBase();

      // ledge (fixed keeper)
      Flip_rhs(1-keeper_side) intersection(){
        rotate([90, 0, 0])
          linear_extrude(height = phone_height + phone_cnr_rad * 2)
          KeeperProfile(1);

        // outline of the whole case, to stop it protruding
        translate([0,0, -25])
          linear_extrude(height = 50)
          hull()
          Flip_bot()
          circleat([+1,-1] * phone_cnr_rad, phone_cnr_rad + case_th_side/2);
      }

      // hinge
      HingePortion(hex20, hex21) HingeBaseProfile();

      // buildout for prop recess
      if (prop_caserecess_buildout_r > 0) Flip_rhs(1)
        linextr(case_bottom_z, epp2i[1])
        hull() {
          for (dxs = [-1,+1])
            circleat([ prop_x_pos + dxs * prop_caserecess_buildout_r,
                       -epp2o[0] ],
                     r = epp2o[0] - prcp2[0]);
        }
    }

    // slot for keeper
    Flip_rhs(keeper_side)
      translate([0, -phone_cnr_rad, 0])
      rotate([90, 0, 0])
      linear_extrude(height = phone_height + phone_cnr_rad * 2)
      minkowski(){
        KeeperProfile();
        rectfromto([ -keeper_gap_x,    -keeper_gap_z_bot ],
                   [ keeper_gap_x_holes,    +keeper_gap_z_top ]);
      }

    // front camera
    RearCameraAperture();

    // struts (invisible, because they're buried in the case)
    Struts(epp2i[0], epp2i[1] - case_th_bottom, case_th_bottom);

    Buttons(){
      mirror([1,0,0])
        rotate([90,0,90]) {
          if (!($button_leg_only && enable_support))
          intersection(){
            translate([0,0,-10])
              linear_extrude(height= 20)
              ButtonPlan($button_l, 0,1);
            if ($button_leg_only)
              rotate([-90,90,0])
                translate([phone_width/2, -400, kppe[1]])
                mirror([1-abs($rhsflip - keeper_side),0,0])
                cube([400, 800, 50]);
            if (enable_support && !$button_suppress_over_keeper)
              rotate([-90,90,0])
              translate([-400, -400, kppd[1]])
                mirror([0,0,1])
                cube([800,800,100]);
          }
          translate([0,0, -bppR[0]])
            linear_extrude(height= 20)
            ButtonPlan($button_l, 1,1);
        }
      
    }

    // apertures along top edge
    if (!$suppress_forward_holes) {
      // CaseAperture(jack_pos, jack_dia, 8);
      Flip_rhs(1)
        CaseAperture(noisecancelmic_pos, noisecancelmic_dia, 8);
      CaseAperture(lhshole_pos, noisecancelmic_dia, 8, 1);
    }

    OrdinaryBottomEdgeApertures();

    OrdinaryRearApertures();
    NotInTestFrameRearApertures();

    MicroUSBEtc();

    // gaps for the lid's hinge arms
    HingePortion(hex20 - hinge_x_arms_gap,
                 hex21 + hinge_x_arms_gap)
      minkowski(){
        HingeLidProfile();
        circle(r= hinge_r_arms_gap, $fn= 8);
      }

    // screw holes in the hinge arms
    HingeScrews();

    // thumb recess
    ThumbRecessApply(epp4[1])
      ThumbRecessCutProfile();

    // lanyard
    Flip_bot(1)
      translate([ly_o[0], -(phone_cnr_rad + ly_re), ly_o[1]])
      rotate([0, ly_theta, 0])
      rotate([0,0,90])
      LanyardCutout(lanyard_channel_len);

    // prop recess
    Flip_rhs(1)
      translate([prop_x_pos,0,0])
      mirror([0,1,0])
      rotate([90,0,90])
      linextr(-prop_recess_hw, +prop_recess_hw)
      hull(){
        for (d=[ [0,0], [0,-1], [+1,-1/prop_caserecess_taper] ])
          circleat(prcp1 + 20*d,
                   prc_r3);
      }
  }
}

module LidAdhocMultiprintFrame(phase){
  if (led_window_style >= 3) {
    AdhocMultiprintFrame(phase, lpp13[1], -1);
  }
}

module LidAroundEdges(){
  AroundEdges(lpp15[1], lpp13[1] - lpp15[1], 0)
    children();
}

module Lid(){ ////toplevel
  skew_centre = [0, lpp11[0], lpp11[1]];
  difference(){
    union(){
      intersection(){
        LidAroundEdges()
          LidEdgeProfile();

        translate(skew_centre)
          multmatrix([[ 1, 0, 0, 0 ],
                      [ 0, 1, -lid_fold_clearance_skew, 0 ],
                      [ 0, 0, 1, 0 ],
                      [ 0, 0, 0, 1 ]])
          translate(-skew_centre)
          LidAroundEdges()
          LidEdgeFoldClearanceProfile();
      }

      // button covers
      Buttons(){
        intersection(){
          rotate([90,0,90])
            translate([0,0,-10])
            linear_extrude(height= 20)
            ButtonPlan($button_l, 1,0);
          union(){
            rotate([90,0,0])
              translate([0,0,-100])
              linear_extrude(height= 200)
              ButtonCoverProfile();
            hull()
              for (y= [-1,+1] * (($button_l + button_l_fudge)/2
                                 - lid_buttoncover_reinf))
                translate([0,y,0])
                  ButtonCoverReinf();
          }
        }
      }

      // hinge arms
      HingePortion(hex20, hex21) {
        LidEdgeProfile();
        HingeLidProfile();
      }
    }
    Struts(lpp10[0] + strut_min_at_end, lpp13[1], -case_th_lid);

    // screw holes in the hinge arms
    HingeScrews();

    // prop recess
    translate([prop_x_pos, -prlp10[0], prlp10[1]])
      mirror([0,1,0])
      rotate([90,0,90])
      linextr(-prop_recess_hw, +prop_recess_hw)
      hull()
      for (pa = prop_angles)
        PropProfile(pa, 1,1);

    // notification led aperture
    if (led_window_style)
      translate([led_pos[0], -led_pos[1], lpp13[1]]) {
        translate([0,0,-10])
          cylinder(r=nla_r0, h=20);
        if (led_window_style >= 2)
          translate([0,0, -nla_t])
            cylinder(r=nla_r2, height=20);
      }

    }

  LidAdhocMultiprintFrame(1);
}

module HingeLever(){ ////toplevel
  difference() {
    // outer body, positive
    HingePortion(hex22, hex22 + phone_width/2)
      HingeLeverOuterProfile();

    // space for the screws
    HingePortion(hex26, hex24)
      HingeLeverInnerProfile();

    // recesses for the nuts
    HingePortion(hex23, hex26+1)
      HingeLeverNutProfile();

    // bores for the screws
    HingeScrews();

    // space for the charging cable and speaker and micc apertures
    hull() {
      for (x = [-1,+1]) {
        multmatrix([[ 1,0,

                     x
                     * ( (hex24 + hinge_over_nut_plate) -
                         (phone_width/2 - microusb_width/2)
                        )
                     / ( (epp0[1] - microusb_above)
                         -
                         (hppB[1] - hp_r2) ),

                     x * (epp0[1] - microusb_above)

                      ],
                    [ 0,1,0, 0 ],
                    [ 0,0,1, 0 ]]) {
          union(){
            MicroUSBEtc();
            Flip_hinge() MicroUSBEtc();
          }
        }
      }
    }
  }
}

module LidWindow(){ ////toplevel
  translate([led_pos[0], -led_pos[1], lpp13[1]])
    mirror([0,0,1])
    cylinder(r= nla_r1, h=nla_t);
  LidAdhocMultiprintFrame(0);
}

module LidWindowPrint(){ ////toplevel
  rotate([0,180,0])
    LidWindow();
}

module DemoLidWindowSelect(){
  translate([led_pos[0], led_pos[1], -100]) {
    translate([0, -30, 0]) cube([400, 400, 200]);
  }
}

module DemoLidWindow(){ ////toplevel
  %Lid();
  LidWindow();
  translate([0,40,0]){
    color("blue") intersection(){ Lid(); DemoLidWindowSelect(); }
    color("red") intersection(){ LidWindow(); DemoLidWindowSelect(); }
  }
}

module HingeLeverPrint(){ ////toplevel
  rotate([-90,0,0])
    translate([-phone_width/2, phone_height, 0])
    HingeLever();
}

module TestSelectLength(){
  translate([-30, -200, -20])
    cube([30 + 15, 250, 40]);
}

module TestLength(){ ////toplevel
  intersection(){
    Case();
    TestSelectLength();
  }
}

module TestLengthRight(){ ////toplevel
  intersection(){
    Case();
    Flip_rhs(1)
      TestSelectLength();
  }
}

module TestSelectWidth(){
  translate([-30, -(phone_height - 25), -20])
    mirror([0, 1, 0])
    cube([200, 50, 40]);
}

module TestWidth(){ ////toplevel
  intersection(){
    Case();
    TestSelectWidth();
  }
}

module TestLidWidthPrint(){ ////toplevel
  rotate([0,180.0]) intersection(){
    Lid();
    TestSelectWidth();
  }
}

module TestSelectRearAperture(){
  minkowski(){
    union() children();
    translate([20, 0,0])
      cube([42, 2, 1], center=true);
  }
}

module TestSelectCamera(){
  minkowski(){
    TestSelectRearAperture()
      RearCameraAperture();
    cube([0.1, 50, 0.1]);
  }
}

module TestSelectOrdinaryRearApertures(){
  TestSelectRearAperture()
    OrdinaryRearApertures();
}

module TestCamera(){ ////toplevel
  intersection(){
    Case();
    TestSelectCamera();
  }
}

module TestLidByCamera(){ ////toplevel
  intersection(){
    Lid();
    TestSelectCamera();
  }
}

module TestLidByCameraPrint(){ ////toplevel
  rotate([180,0,0]) TestLidByCamera();
}

module DemoByCamera(){ ////toplevel
  color("blue") TestLidByCamera();
  color("red")  TestCamera();
}

module OneKeeper(){ ////toplevel
  translate([0, -phone_cnr_rad, 0])
    rotate([90, 0, 0])
    linear_extrude(height = phone_height - phone_cnr_rad * 2)
    KeeperProfile();
}

module OneKeeperPrint(){ ////toplevel
  rotate([0,180,0])
    OneKeeper();
}

module LidPrint(){ ////toplevel
  rotate([0,180,0])
    Lid();
}

module TestSelectFrame(){
  include = [1,-1] * (epp2i[0] + 4);

  difference(){
    cube(1000, center=true);
    translate([0,0, -100])
      linear_extrude(height=200)
      rectfromto(include,  inside_br - include);
  }

  for (i= [1,2]) {
    translate([ 0, -phone[1] * i/3, 0 ])
      cube(center=true, [1000, 4, 100]);
  }
}

module TestSelectLidFrame(){
  TestSelectFrame();
  if (len(led_pos))
    translate([led_pos[0], -led_pos[1], -50])
    cylinder(r= nla_r2+3, h=100);
}

module TestFrameCase(){ ////toplevel
  intersection(){
    Case();
    union(){
      TestSelectFrame();
      TestSelectCamera();
      TestSelectOrdinaryRearApertures();
    }
  }
}

module TestSelectTopApertures(){
  translate([-100, -35, -100])
    cube([400, 100, 200]);
  LidAdhocMultiprintFrame(0);
  LidAdhocMultiprintFrame(1);
}

module TestTopApertures(){ ////toplevel
  intersection(){
    Case();
    TestSelectFrame();
    TestSelectTopApertures();
  }
}

module TestLidTopAperturesPrint(){ ////toplevel
  rotate([0,180,0]) intersection(){
    Lid();
    TestSelectLidFrame();
    TestSelectTopApertures();
  }
}

module TestLidWindowTopAperturesPrint(){ ////toplevel
  rotate([0,180,0]) intersection(){
    LidWindow();
    TestSelectTopApertures();
  }
}

module TestFrameLidPrint(){ ////toplevel
  rotate([0,180,0]) intersection(){
    Lid();
    TestSelectLidFrame();
  }
}

module ButtonPlanForDemo(z, deep, cut){
  translate([0,0,z])
    ButtonPlan(8, deep, cut);
}

module HingeScrews(){
  Flip_rhs() Flip_bot(1){
    for (c= [ hppT, hppB ])
      translate([ hex20,
                  -c[0],
                  c[1] ]){
        rotate([0,90,0])
          translate([0,0,-.2])
          cylinder( r= hingescrew_shaft_dia/2,
                    h = hingescrew_shaft_len+0.2 );
        rotate([0,-90,0])
          translate([0,0,+.1])
          cylinder( r= hingescrew_head_dia/2, h = hingescrew_head_th );
      }
  }
}

module DemoPropAngleSelect(c){
  color(c) difference(){
    union(){ children(); }
    translate([ prop_x_pos, -400, -200 ])
      cube([ 400,800,400 ]);
  }
}

module DemoPropAngle(ang){
  hL = [0, -(phone_height - hppT[0]), hppT[1] - hp_k*2];
  hC = [0, -(phone_height - hppB[0]), hppB[1]];

  translate(hL)
    rotate([ang/2,0,0])
    translate(-hL)
    translate(hC)
    rotate([ang/2,0,0])
    translate(-hC) {
      DemoPropAngleSelect("red") Case();

      color("orange")
        translate([prop_x_pos, -prcp1[0], prcp1[1]])
        PropProfileAssignments(ang) {
          echo($prpp1);
          rotate([-$prp_theta, 0, 0])
          translate([0, $prpp1[0], -$prpp1[1]])
          rotate([90,0,-90])
          Prop();
        }
    }

  translate([0,0, -hp_k*2])
    DemoPropAngleSelect("blue")
    Lid();
}

module DemoPropAngles(){ ////toplevel
  for (i=[0 : len(prop_angles)-1])
    translate(i * [0, -100, 100])
    DemoPropAngle(prop_angles[i]);
}

module DemoHingeAngle(ang1,ang2){
  hL = [0, -(phone_height - hppT[0]), hppT[1]];
  hC = [0, -(phone_height - hppB[0]), hppB[1]];

  translate(hL)
    rotate([ang2,0,0])
    translate(-hL)
    translate(hC)
    rotate([ang1,0,0])
    translate(-hC) {
      color("red") Lid();
    }

  color("blue") intersection(){
    Case();
    union(){
      translate([bppJ[0], -400, -200])
        mirror([1,0,0])
        cube([400, 800, 400]);
      translate([10, -400, -200])
        cube([10, 800, 400]);
    }
  }
}

module DemoHingeAngles(){ ////toplevel
  angles = [ 0, 4, 8, 12 ];
  echo("angles",angles);
  for (i=[0 : len(angles)-1]) {
    translate(i * [0, 0, 30]) {
      DemoHingeAngle(0,angles[i]);
      translate([0, 200, 0])
        DemoHingeAngle(angles[i],0);
    }
  }
}

module DemoSelectAdhocLeftRight(right=0) {
  translate([phone_width/2, -400, -100]) // , -15, -100  to cross-section
    mirror([1-right, 0,0])
    cube([400, 800, 200]);
}

module DemoLeft(){ ////toplevel
  color("red")  intersection(){ Case(); DemoSelectAdhocLeftRight(); }
  color("blue") intersection(){ Lid();  DemoSelectAdhocLeftRight(); }
}

module DemoFrame(){ ////toplevel
  color("red") render() TestFrameCase();
  color("blue") render() intersection(){ Lid(); TestSelectLidFrame(); }
  color("black") render() HingeScrews();
  %render() HingeLever();
}

module DemoLanyardCutout(){ ////toplevel
  LanyardCutout(25);
}

module DemoHingedFrame(){ ///toplevel
  color("red") render() TestFrameCase();
  translate([0,0, -2*hp_k])
  color("blue") render() intersection(){ Lid(); TestSelectLidFrame(); }

  Flip_hinge(){
    color("orange") render() HingeLever();
    color("black") render() HingeScrews();
  }
}

module DemoHinge(){ ////toplevel
  translate([ -0.5*phone_width, phone_height, hp_k*3 ]) {
    DemoFrame();
    translate([0,0, -hp_k*3])
      DemoHingedFrame();
  }
}

module DemoProfiles(){ ////toplevel
  LidEdgeProfile();
  %EdgeProfile();
  KeeperProfile();
  translate([0,0,-1]) color("black") KeeperProfile(1);
  translate(ly_o){
    rotate(-ly_theta){
      translate([0,0,+1]) color("purple") LanyardMainChannelProfile();
      translate([0,0,+2]) color("red") LanyardCurveChannelProfile();
      translate([0, ly_q_z]){
        translate([0,0,-1]) color("blue") LanyardEntryChannelProfile();
        translate([ly_oec_y,0,-2]) color("black") LanyardEntryOuterProfile();
      }
    }
  }
  translate([0,0,-5]) color("white") translate(epp2i)
    rotate(-ly_theta)
    rectfromto([-15, 0],
               [+15, -max_case_bottom_edge_thickness]);

  translate([0,20]) {
    LanyardMainChannelProfile();
    translate([0,0,1]) color("purple") LanyardCurveChannelProfile();
    translate([0,0,-1]) color("red") LanyardEntryChannelProfile();
  }

  translate([20,0]) {
    LidEdgeProfile();
    %EdgeProfile();

    demopoint_QR = [ bppS[0], bppQ[1] - 0.1];
  
    color("blue") ButtonCoverProfile();
    color("red") {
      rectfromto(bppQ, demopoint_QR);
      rectfromto(bppR, demopoint_QR);
    }
  }

  translate([-20,0]) {
    color("black") ButtonPlanForDemo(-2, 0,1);
    color("red" )  ButtonPlanForDemo(-4, 1,1);
    color("blue")  ButtonPlanForDemo(-6, 1,0);
  }

  translate([0, -30]) {
    %LidEdgeProfile();
    %EdgeProfile();
    color("blue") HingeLidProfile();
    color("red")  HingeBaseProfile();
    color("black") translate([0,0,-2]) HingeLeverOuterProfile();
  }

  for (f=[0,1]) {
    translate([-30, -60 + 30*f]) {
      translate([0,0,-4]) EdgeProfile();
      %translate([0,0,-10]) HingeBaseProfile();
      translate([0,-2] * f * hp_k) {
        translate([0,0,-4]) LidEdgeProfile();
        %translate([0,0,-10]) %HingeLidProfile();
      }
      translate(+hppB) rotate([0,0,180*f]) translate(-hppB) {
        translate([0,0,-2]) color("black") HingeLeverOuterProfile(); 
        translate([0,0,0]) color("red") difference(){
          HingeLeverOuterProfile();
          HingeLeverInnerProfile();
        }
        translate([0,0,3]) color("yellow") HingeLeverNutProfile();
      }
    }
  }

  translate([20,-30]) {
    %EdgeProfile();
    %LidEdgeProfile();
    //translate([0,0,1]) ThumbRecessCutProfile();
    translate([0,0,+1]) color("red")
      difference(){ EdgeProfile(); ThumbRecessCutProfile(); }
  }

  translate([40,-30]) {
    difference(){
      LidEdgeProfile();
      translate(prlp10)
        PropProfile(10, 1, 0);
    }
    translate(prlp10)
      PropProfile(15, 0);
  }
  translate([60,-30]) {
    PropAggregateProfile();
  }
}

//EdgeProfile();
//KeeperProfile();
//CaseBase();
//%Case();
//Keeper();
//LidEdgeProfile();
//KeeperProfile();
//DemoProfiles();
//PropRecess();