phone = [ 75.0, 145.0 ];
-prop_lid_posns = [ 70 ]; // measured from bottom of phone
+prop_buildout_less = 3;
-prop_lengths = [ 80, 50 ];
-
-prop_angle_specs = [
- // angle prop length index prop lid posn index
- [ 15, 1, 0 ],
- [ 30, 1, 0 ],
- [ 45, 0, 0 ],
- [ 60, 0, 0 ],
- ];
+prop_angles = [ 15, 30, 45, 60 ];
bumper = [ 0.250, -0.025 ];
// ^ One side. Overall size is increased by twice this.
catch_finger_height = 1.5;
catch_finger_depth = 2.5;
-prop_main_width = 3;
-prop_wing_len = 3;
-prop_nose_slope = 1.5; // bigger means pointier
-prop_side_gap = 0.75; // each side
-prop_fin_height = 1.5;
-prop_fin_width = 0.75;
-prop_max_angle = 45; // bigger means at worse angle
-prop_recess_under = 0.30;
-prop_backfwd_gap = 1.0; // total
-
-prop_recess_slop = 0.125; // each side
+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;
// ---------- calculated ----------
inside_br = [phone_width, -phone_height];
+prop_prong_h = prop_main_th;
+
//echo(camera_pos_tl + bumper,
// camera_pos_br + bumper);
phone_backside_slope_thick = phone_total_thick - phone_edge_thick;
-prop_nose_len = case_th_lid - prop_recess_under;
-prop_recess_slope = tan(prop_max_angle); // bigger means steeper
-prop_recess_depth = case_th_lid - prop_recess_under;
-prop_recess_width = prop_main_th / cos(prop_max_angle) + prop_backfwd_gap;
+//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;
+
//lid_lip_overlap_width xxx bad name = ;
//lid_lip_inner_slope = [ 5, 5 ]; // xxx
cppV[1] - (catch_finger_height - cp_rQ) ];
cppF = [ cppV[0] + catch_finger_depth, cppC[1] ];
-// prop recess
+// prop recess in case
+
+prop_x_pos = phone_width/2;
-prp1 = [0,0]; // by definition
-prp2 = prp1 + [ -prop_recess_slope, -1 ] * prop_recess_depth;
-prp4 = prp1 + [1,0] * prop_recess_width;
-prp3 = [ prp4[0], prp2[1] ];
-prp5 = prp4 + [1,0] * prop_recess_depth;
+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],
+ epp2i[1] - prc_r3 ];
// prop recess in lid
-prlp1 = [ lpp10[0] + prop_recess_slop + prop_end_dia/2,
- lpp10[1] + prop_recess_slop + prop_end_dia/2 ];
+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 ----------
children(0);
}
-module PropRecess(){
- // origin is nonstandard
- hwd345 = 0.5*prop_main_width + prop_side_gap;
- hwd35 = 0.5*prop_fin_width + prop_side_gap;
- rotate([90,0,90]){
- linextr(-hwd345, +hwd345)
- polygon([ prp1,
- prp2,
- prp3,
- prp4,
- prp4 + [0,10],
- prp1 + [0,10],
- ]);
- linextr(-hwd35, +hwd35)
- polygon([ prp1,
- prp3,
- prp5,
- prp5 + [0,10],
- prp1 + [0,10],
- ]);
- }
+module CaseBase(){
+ AroundEdges(epp3[1], case_th_bottom, 1)
+ EdgeProfile();
}
-module SomePropProfile(gamma){
-// prop-internal
- pip1 = [0,0];
- pip2 = [ 0.5 * (prop_main_th - prop_end_dia),
- prop_taper_len ];
-
- translate(prlp1) {
- circleat([0,0], prop_end_dia/2);
- cirecleat(pip2, prop_main_th);
-
- }
+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] - epp4[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] * $prp_r8;
+
+ children();
}
-module CasePropRecess(pas) {
- // destructure entry in prop_angle_specs
- beta = pas[0];
- b = prop_lengths [ pas[1] ];
- p = prop_lid_posns[ pas[2]] ;
+module PropProfile(gamma, cut=0, rot=0){ ////toplevel
+ PropProfileAssignments(gamma){
- k = hp_k;
- x = k / (2 * sin(beta/2)) - hppT[0];
- c = p + x;
+ //#circleat($prpp3,1);
+ //#circleat($prpp12,1);
- // https://en.wikipedia.org/wiki/Solution_of_triangles#Two_sides_and_non-included_angle_given_(SSA) [25.1.18]
- // we always want the positive solution because it has a closer to c
- a = c * cos(beta) + sqrt( b*b - pow(c * sin(beta),2) );
- q = a - x;
-
- echo(beta, a, b, c);
+ if (!cut) {
+ hull(){
+ translate($prpp8)
+ intersection(){
+ circle($prp_r8);
+ polygon([[-20,-0], [0,0], [20,20]]);
+ }
+ rectfromto($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, $prp_r10 + extra);
+ }
+ }
+ }
+}
- Flip_bot(1)
- translate([ phone_width/2, -q, case_bottom_z ])
- rotate([0,180,0])
- PropRecess();
+module PropAggregateProfile(){
+ for (angle = prop_angles)
+ PropProfile(angle, 0,0);
}
-module CaseBase(){
- AroundEdges(epp3[1], case_th_bottom, 1)
- EdgeProfile();
+module Prop(){ ////toplevel
+ hw = prop_main_width/2;
+ linextr(-hw, +hw)
+ PropAggregateProfile();
}
module Case(){ ////toplevel
// hinge
HingePortion(hex20, hex21) HingeBaseProfile();
+
+ // buildout for prop recess
+ if (prop_caserecess_buildout_r > 0) Flip_rhs(1)
+ linextr(case_bottom_z, epp2i[1])
+ hull() {
+ for (dxs = [-1,+1])
+ circleat([ prop_x_pos + dxs * prop_caserecess_buildout_r,
+ -epp2o[0] ],
+ r = epp2o[0] - prcp2[0]);
+ }
}
// slot for keeper
linear_extrude(height= 20)
ButtonPlan($button_l, 1,1);
}
+
}
// apertures along top edge
CatchPortion(catch_width + catch_side_gap*2)
CatchCutProfile();
- // prop recesses
- #for (pas = prop_angle_specs)
- CasePropRecess(pas);
+ // prop recess
+ Flip_rhs(1)
+ translate([prop_x_pos,0,0])
+ rotate([90,0,90])
+ linextr(-prop_recess_hw, +prop_recess_hw)
+ mirror([1,0])
+ hull(){
+ for (d=[ [0,0], [0,-1], [+1,-1/prop_caserecess_taper] ])
+ circleat(prcp1 + 20*d,
+ prc_r3);
+ }
}
}
// screw holes in the hinge arms
HingeScrews();
- // prop recesses
- Flip_bot(1)
- for (y = prop_lid_posns)
- translate([ phone_width/2, -y, lpp13[1] ])
- PropRecess();
+ // prop recess
+ translate([prop_x_pos, -prlp10[0], prlp10[1]])
+ rotate([90,0,90])
+ linextr(-prop_recess_hw, +prop_recess_hw)
+ mirror([1,0])
+ hull()
+ for (pa = prop_angles)
+ PropProfile(pa, 1,1);
}
}
Lid();
}
-module TestSelectPropRecesses(posns){
- linextr(-100,100){
- translate([phone_width/2, -phone_height]){
- square([ 3, 500 ], center=true);
- for (y=posns)
- hull()
- for (dy=[ -prp5[0], -prp2[0] ])
- translate([0,y+dy])
- square([prop_main_width+5, 5], center=true);
- }
- }
-}
-
module TestSelectFrame(){
include = [1,-1] * (epp2i[0] + 4);
module TestSelectLidFrame(){
TestSelectFrame();
- TestSelectPropRecesses(prop_lid_posns);
}
module TestFrameCase(){ ////toplevel
}
}
+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 DemoFrame(){ ////toplevel
color("red") TestFrameCase();
color("blue") intersection(){ Lid(); TestSelectLidFrame(); }
color("blue") CatchCatchProfile();
color("red") difference(){ EdgeProfile(); CatchCutProfile(); }
}
+
+ translate([40,-30]) {
+ difference(){
+ LidEdgeProfile();
+ translate(prlp10)
+ PropProfile(10, 1, 0);
+ }
+ translate(prlp10)
+ PropProfile(15, 0);
+ }
+ translate([60,-30]) {
+ PropAggregateProfile();
+ }
}
//EdgeProfile();