4 include <commitid.scad>
10 ply_hole_dia_real = 12;
26 interlock_fine = 0.66;
28 interlock_fine_slope = 1.0;
29 interlock_fine_lenslop = 1.0;
35 leg_hole_dia = 5 + 0.75;
47 leg_fin_bot_flat_z = 5;
55 machine_rear_to_front = 84 + 0.25 - 1.4;
57 cutout_l_end_y_front_slop = 0.5;
58 cutout_l_end_y_rear_slop = 0.5;
61 cutout_l_end_y = machine_rear_to_front;
62 cutout_l_end_new_x_slop = 1.4 - 1.95;
63 cutout_l_end_y_total = cutout_l_end_y
64 + cutout_l_end_y_front_slop + cutout_l_end_y_rear_slop;
66 tile02_tr = [-250, 0];
69 cutout_tile01_y = 170 - 147 + cutout_l_end_y_front_slop;
70 cutout_tile11_y = cutout_l_end_y_total - cutout_tile01_y;
72 // front and rear curves
74 rearedge_len = 170 + 0.70;
77 rearcurve_strt_len = 52;
79 rearcurve_z_slop = -0.50;
81 rearcurve_avoid_y = 35;
83 rearcurve_double_inrad = 26.10 + 8.04;
89 frontcurve_side_skew = 3.5 / 72;
90 frontcurve_avoid_y = 70;
91 frontcurve_z_slop = 0.75;
93 frontcurve_strt_len = 50;
94 frontcurve_dualcurve_angle = 30;
96 teststrapslots_at = [ [ 110, 70 ], [ 110, -35 ],
98 [ 190, -80 ], // do not change index of this one
99 [ 0, 70 ], [ 0, -35 ],
102 teststrap = [ 3, 5 ];
103 teststrap_peg = [7.5, 3.5];
105 ply_edge_hole_dist_real = 14;
112 ply_edge_hole_dist = ply_edge_min + ply_hole_dia/2;
114 echo(str("HOLES IN PLY ctr dist from PLY edge = ", ply_edge_hole_dist));
116 hole_slop = (ply_hole_dia - post_dia)/2;
117 tile_hard_edge_hole_dist = ply_edge_hole_dist + hole_slop;
119 echo(str("HOLES IN PLY ctr dist from TILE HARD edge = ",
120 tile_hard_edge_hole_dist));
122 echo(str("HOLES IN PLY ctr dist from TILE ROUND edge = ",
123 tile_hard_edge_hole_dist + round_edge_rad));
125 thehd = [ tile_hard_edge_hole_dist, tile_hard_edge_hole_dist ];
127 thehd_tl = [ -thehd_tr[0], thehd_tr[1] ];
128 thehd_bl = -thehd_tr;
129 thehd_br = -thehd_tl;
131 tablet_z_slop = 1.00;
133 interlock_rad = interlock_dia/2;
134 interlock_negative_rad = interlock_rad + 0.125;
136 interlock_sq_adj = 0.2; // arbitrary
138 leg_fin_top_rad = sqrt( pow(leg_big_dia/2,2) -
139 pow(leg_fin_top_w/2,2) );
141 leg_tubule_pos_rad = leg_big_dia/2 * 0.6;
143 m4_define(`POST_TCROSSSZ',
144 `2*( tile_hard_edge_hole_dist - test_edge + 1 )')
150 cylinder(r= post_dia/2, h= tile_th + ply_th - post_shorter);
151 translate([0,0, tile_th]) {
152 cylinder(r= screw_big_dia/2, h= screw_big_len);
153 cylinder(r= screw_dia/2, h= ply_th, $fn=20);
158 translate([0,0, tile_th/2]) {
159 cube([post_dia, POST_TCROSSSZ, tile_th], center=true);
160 cube([POST_TCROSSSZ, post_dia, tile_th], center=true);
164 translate([0,0, tile_th/2]) {
165 cube([POST_TCROSSSZ, POST_TCROSSSZ, tile_th], center=true);
174 cylinder(r= post_dia/2 + jig_post_hole_slop, h=10);
175 translate([0,0, -jig_min_th])
176 cylinder(r= ply_hole_dia_real/2, h = 5);
177 for (rot=[0:90:270]) rotate(rot) {
178 translate([ ply_edge_hole_dist_real, 0, 0 ])
179 cube([ jig_pencil_rad*2, jig_pencil_slotlen, 20 ], center=true);
184 module Posts(posts) {
186 translate(concat(p, [0]))
190 module PostHoles(posts) {
192 translate(concat(p, [0]))
197 module TileBase(botleft, topright){
198 size = topright - botleft;
199 botleft_post = botleft + thehd_tr;
200 topright_post = topright + thehd_bl;
203 translate(concat(botleft, [0]))
204 cube(concat(size, [tile_th]));
205 if (!(TEST || JIG)) {
206 cidsz = topright_post-botleft_post
207 + [-post_dia,-post_dia]
209 cidszr = [ min(cidsz[0],50), min(cidsz[1],50) ];
210 echo("CID",cidsz,cidszr);
211 translate( concat(botleft_post, [ -tile_th ])
212 + 0.5 * [ post_dia, post_dia, 0 ]
213 + 0.5 * concat( cidsz - cidszr, [ 0 ]) )
214 Commitid_BestCount_M(cidszr);
217 crossoff = tile_hard_edge_hole_dist + POST_TCROSSSZ/2;
218 cidsz = [ thehd[0], size[1] - 2*crossoff ];
219 cidszr = [ cidsz[0], min(cidsz[1], 50) ];
221 translate( concat(botleft + [0, crossoff] + (cidsz-cidszr)/2, [0]) )
222 Commitid_BestCount(cidszr);
225 translate(concat(botleft + [test_edge,test_edge], [test_tile_th]))
226 cube(concat(size - [test_edge,test_edge]*2, [tile_th*2]));
227 translate(concat(botleft_post, [-1]))
228 cube(concat(topright_post-botleft_post, [tile_th+2]));
230 shufflesz = max(test_edge, tile_hard_edge_hole_dist)*2;
233 cube(shufflesz, center=true);
236 translate([0,0,-20]) linear_extrude(height=20) {
237 for (diag=[[ +1, botleft ],
238 [ -1, [topright[0], botleft[1]] ]]) {
240 rotate(atan2(size[1], diag[0] * size[0]))
241 translate([0, -test_edge/2])
242 square([vectorlen2d(size), test_edge]);
252 m4_dnl c is from Rectangle_corners and
253 m4_dnl ix is a corner number
254 m4_dnl expands to two comma-separated corners:
255 m4_dnl that denoted by ix, and the next one anticlockwise
256 m4_define(`R_EDGE',`$1[$2], $1[(($2)+1)%4]')
259 m4_dnl c is from Rectangle_corners and
260 m4_dnl ix is a corner number
261 m4_dnl expands to an array of corners as for RoundCorner
262 m4_define(`R_CNR',`[ $1[$2], $1[(($2)+1)%4], $1[(($2)+3)%4] ]')
264 m4_dnl INREFFRAME(left_cnr, right_cnr, morevars) { body; }
265 m4_define(`INREFFRAME',`
266 length_vec = ($2) - ($1);
267 length = dist2d([0,0], length_vec);
268 length_uvec = length_vec / length;
269 ortho_uvec = [ -length_uvec[1], length_uvec[0] ];
270 m = [ [ length_uvec[0], ortho_uvec[0], 0, ($1)[0], ],
271 [ length_uvec[1], ortho_uvec[1], 0, ($1)[1], ],
278 m4_dnl INREFFRAME(left_cnr, right_cnr, morevars)
279 m4_dnl INREFFRAME_EDGE { body; }
280 m4_define(`INREFFRAME_EDGE',`
281 translate([0,0, -round_edge_rad])
284 module RoundEdge(left_cnr, right_cnr) {
285 INREFFRAME(left_cnr, right_cnr)
289 cylinder(r= round_edge_rad, h= length, $fn=50);
290 translate([-1, 0, -20])
291 cube([length+2, 20, 20]);
296 m4_define(`ROUNDCORNER_VARS',`
300 bigr= round_cnr_rad - round_edge_rad;
301 l_uvec = unitvector2d(left_cnr - this_cnr);
302 r_uvec = unitvector2d(right_cnr - this_cnr);
303 lp1 = left_cnr + clockwise2d(l_uvec) * bigr;
304 lp2 = this_cnr + clockwise2d(l_uvec) * bigr;
305 lp3 = this_cnr - clockwise2d(r_uvec) * bigr;
306 lp4 = right_cnr - clockwise2d(r_uvec) * bigr;
307 ctr = line_intersection_2d(lp1,lp2,lp3,lp4);
308 ctr3 = concat(ctr,[0])
311 module RoundCorner_selector(ci, adj) {
315 INREFFRAME(ctr3,concat(lp1,[4])){
316 translate([0,0,-bigr]) linear_extrude(height=bigr*2) {
317 translate([-bigr*2 + adj, -bigr])
318 square([bigr*2, bigr*3]);
323 INREFFRAME(ctr3,concat(lp4,[0])){
324 translate([0,0,-bigr]) linear_extrude(height=bigr*2) {
325 translate([-bigr*2, -bigr*2])
326 square([bigr*2 + adj, bigr*3]);
333 module RoundCornerCut(ci) {
334 // ci should be [this_cnr, right_cnr, left_cnr]
335 // where right_cnr is to the right (ie, anticlockwise)
338 RoundCorner_selector(ci, -0.1);
340 cylinder(center=true, h=20, r= bigr);
344 module RoundCornerAdd(ci) {
347 RoundCorner_selector(ci, +0.1);
350 rotate_extrude(convexity=10, $fn=50)
353 circle(r= round_edge_rad, $fn=50);
362 module InterlockLobePlan(negative) {
363 r = negative ? interlock_negative_rad : interlock_rad;
364 ymir = negative ? 0 : 1;
368 translate([thehd[0], 0]){
372 translate([-dx, -0.1])
373 square([ dx*2, r/2 + 0.1 ]);
375 translate([ xi*dx, r ])
383 module InterlockEdgePlan(negative, nlobes, length, dosquare=true) {
384 for (lobei = [ 0 : nlobes-1 ]) {
385 lobex = (length - thehd[0]*2) * (lobei ? lobei / (nlobes-1) : 0);
386 translate([lobex, 0, 0]) {
387 InterlockLobePlan(negative);
393 slotshorter = negative ? -0.1 : interlock_fine_lenslop;
394 mirror([0, negative])
395 translate([slotshorter, iadj])
396 square([length - slotshorter*2, interlock_fine + iadj*2]);
400 module InterlockEdge(left_cnr, right_cnr, negative=0, nlobes=2) {
401 plusth = negative * 1.0;
402 protr = interlock_fine + interlock_sq_adj;
405 z1 = -tile_th/2 - protr / interlock_fine_slope;
406 z3 = -tile_th/2 + protr / interlock_fine_slope;
408 negsign = negative ? -1 : +1;
409 yprotr = negsign * protr;
411 INREFFRAME(left_cnr, right_cnr) {
412 for (vsect = [ // zs0 zs1 ys0, ys1
413 [ -tile_th-plusth, plusth, 0, 0],
414 [ z1, z2, 0, yprotr],
415 [ z2, z3, yprotr, 0],
425 [ 0,1, -sl, -ys0 + negsign*interlock_sq_adj ],
429 linear_extrude(height=zsd, convexity=10)
430 InterlockEdgePlan(negative, nlobes, length, !!ysd);
435 function TestPiece_holes2corners(holes) =
436 [ holes[0] + thehd_bl,
439 holes[0] + thehd_tl ];
441 module TestPiece1(){ ////toplevel
445 corners = TestPiece_holes2corners(holes);
446 rcs = R_CNR(corners,0);
449 TileBase(corners[0], corners[2]);
451 RoundEdge(corners[0], corners[1]);
452 RoundEdge(corners[3], corners[0]);
454 InterlockEdge(corners[1], corners[2], 1, nlobes=1);
461 module TestPiece2(){ ////toplevel
465 corners = TestPiece_holes2corners(holes);
468 TileBase(corners[0], corners[2]);
470 RoundEdge(corners[0], corners[1]);
471 InterlockEdge(corners[3], corners[0], 0, nlobes=1);
477 module TestDemo(){ ////toplevel
478 translate([ -thehd[0], 0 ])
481 translate([ +thehd[0] + demo_slop, 0 ])
485 module Machine_NewRearProfile(){
486 // figures copied out of xfig edit boxes
487 // best not to edit the posbox size if poss - just move it
488 posbox = 10 * ([7.2333,-14.1267] - [-16.2289,40.0289]); // box, Green
489 sideline = -10 * ([-6.2400,13.5600] - [-2.4467,28.2556]); // line, Blue
490 scaleline = 10 * dist2d([-1.1911,-20.4800], [-11.2600,4.0578]); // Green2
491 scaleline_mm = 12+5+10+5+3;
492 sh = -[abs(posbox[0]), abs(posbox[1])];
493 rot = atan2(-sideline[0], sideline[1]);
494 sc = scaleline_mm / scaleline;
495 //echo("SH",sh,rot,sc);
496 scale(sc) rotate(rot) translate(sh){
497 import("sewing-table-rear-profile.dxf", convexity=10); // spline, Pink3
501 module Machine_NewFrontProfile(){
502 // figures copied out of xfig edit boxes
503 // best not to edit the posbox size if poss - just move it
504 posbox = 10 * ([11.8022,8.0600] - [4.2044,19.1867]); // box, Green
505 refline = 10 * ([7.6778,16.7222] - [27.8689,17.6578]); // line, Blue
506 refline_mm = (11-1)*10;
507 sh = -[abs(posbox[0]), abs(posbox[1])];
508 rot = atan2(-refline[0], refline[1]);
509 sc = refline_mm / vectorlen2d(refline);
510 //echo("SH",sh,rot,sc);
511 mirror([1,0]) scale(sc) rotate(rot+90) translate(sh){
512 import("sewing-table-front-profile.dxf", convexity=10); // spline, Pink3
516 module Machine_NewEndProfile(){
517 // figures copied out of xfig edit boxes
518 // NB that y coords are reversed - xfig origin is at bottom left
519 posboxs = 10 * [[4.0400,17.7956], [11.6622,32.5511]]; // box, Pink3
520 refline = 10 * ([8.4000,22.6000] - [50.3000,22.2000]); // line, Blue
521 refline_mm = 10 * (11 - 2.5);
522 sidelines = 10 * [[[9.0889,20.6178], [8.9644,14.6889]],
523 [[50.3800,21.9578], [50.1933,14.4933]]]; // lines, Blue3
524 baseline = 10 * [[8.4000,18.0822], [50.3000,17.6822]]; // line, Green2
528 posbox = [min(posboxs[0][0],posboxs[1][0]),
529 max(posboxs[0][1],posboxs[1][1])];
531 m4_define(`MNEP_ELP',
532 `line_intersection_2d(baseline[0],baseline[1],
533 sidelines[$1][0],sidelines[$1][1])')
534 endline = [MNEP_ELP(0),MNEP_ELP(1)];
536 rot = atan2(-refline[1], -refline[0]);
537 sc = refline_mm / vectorlen2d(refline);
538 sh = (0.5 * (endline[0] + endline[1])) - posbox;
540 ellen = sc * dist2d(endline[0],endline[1]);
541 scy = cutout_l_end_y_total / ellen;
543 scale([scy,1]) scale(sc) rotate(rot + rot_adj) translate(-[sh[0],-sh[1]]){
546 //%translate(1 * (posboxs[0] - posbox)) square(50);
547 //%translate(1 * (posboxs[1] - posbox)) square(50);
548 // %translate(1 * (baseline[0] - posbox)) square([50,10]);
550 // %translate(1 * (endline[0] - posbox)) square([50,10]);
551 // %translate(1 * (endline[1] - posbox)) square([50,10]);
553 // %translate(1 * (sidelines[0][0] - posbox)) square([10,50]);
554 // %translate(1 * (sidelines[0][1] - posbox)) square([10,50]);
555 // %translate(1 * (sidelines[1][0] - posbox)) square([10,50]);
556 // %translate(1 * (sidelines[1][1] - posbox)) square([10,50]);
559 import("sewing-table-end-profile.dxf", convexity=10); // spline, Pink3
563 module Machine_NewEndProfileDemo(){ ////toplevel
564 translate([0,5,0]) Machine_NewEndProfile();
565 translate([0,5,1]) color("blue") mirror([1,0]) Machine_NewEndProfile();
567 translate([0,5, 0]) Machine_NewEndProfile();
568 translate([0,5,-1]) color("blue") mirror([1,0]) Machine_NewEndProfile();
572 module Machine_NewArm(){
573 translate([0,0,-30]) linear_extrude(height=60) {
574 translate(tile01_tr + [ -cutout_l_end_x - cutout_l_end_new_x_slop,
575 (-cutout_tile01_y + cutout_tile11_y)/2 ]){
579 translate([0,d]) Machine_NewEndProfile();
586 module Machine_NewRearCurve(){
587 slant = atan2(4,210-10);
589 translate([0,0, rearcurve_double_inrad]) rotate([slant,0,0]){
590 translate([ rearcurve_double_inrad,
592 -rearcurve_double_inrad + 10 ]){
593 rotate([180,0,0]) rotate([0,0,90]) linear_extrude(height=30){
595 Machine_NewRearProfile();
596 translate([0,-100]) Machine_NewRearProfile();
600 rotate([0,90,0]) rotate([90,0,0]) {
602 rotate_extrude(convexity=10, $fn=64)
604 translate([ 0, -rearcurve_double_inrad ])
605 Machine_NewRearProfile();
606 translate([0,0,-500])
607 cube([500,500,1000]);
610 translate([1,0,-rearcurve_double_inrad])
611 rotate([0,-90,0]) rotate([0,0,-90])
612 linear_extrude(height= rearcurve_strt_len + 1)
613 Machine_NewRearProfile();
617 module Machine_Curves(){ ////toplevel
618 translate([ tile01_tr[0] - cutout_l_end_x + rearedge_len,
622 translate([ -reartablet_x,
624 -reartablet_z + tablet_z_slop])
626 cube([ reartablet_x+1,
630 translate([ tile01_tr[0] - cutout_l_end_x + frontedge_len,
632 frontcurve_z_slop ]){
633 translate([0, -machine_rear_to_front, 0])
634 multmatrix([[1, -frontcurve_side_skew, 0, 0],
638 mirror([1,0,0]) rotate([0,-90,0])rotate([0,0,-90])
639 linear_extrude(height= 200)
640 Machine_NewFrontProfile();
642 translate([ tile01_tr[0] - cutout_l_end_x + rearedge_len,
644 frontcurve_z_slop ]){
645 translate([ rearcurve_strt_len,
648 Machine_NewRearCurve();
653 module TestStrapSlots(){
654 pegwidth = teststrap_peg[0];
655 for (pos = teststrapslots_at) {
657 translate(concat(pos,[0]))
658 for (mx = [0,1]) mirror([mx,0,0]) {
659 translate([ pegwidth/2, -teststrap[1]/2, -20 ])
660 cube(concat(teststrap,[40]));
665 module TestStrapPeg_any(l){ cube(concat([l],teststrap_peg)); }
667 module TestStrapPeg_Short(){ ////toplevel
668 TestStrapPeg_any(35);
671 module TestStrapPeg_Long(){ ////toplevel
672 TestStrapPeg_any(60);
675 module Machine(){ ////toplevel
682 module MachineEnvelope(){
684 p_arm_bl = [-cutout_l_end_x, -cutout_tile01_y];
685 y_arm_t = cutout_tile11_y;
686 p_crv_fl = p_arm_bl + [frontedge_len, -frontcurve_avoid_y];
687 y_crv_b = y_arm_t + rearcurve_avoid_y;
689 translate([0,0,-50]) linear_extrude(height= 100){
690 translate(p_arm_bl) square([400, y_arm_t] - p_arm_bl);
691 translate(p_crv_fl) square([400, y_crv_b] - p_crv_fl);
695 module Leg(){ ////toplevel
700 cylinder(r= leg_big_dia/2, height=leg_top_flat_z, $fn=100);
701 translate([0,0, -leg_top_thick])
702 cylinder(r= leg_bot_dia/2, height=1, $fn=100);
704 for (rot=[0: 360/leg_n_fins : 359]) rotate(rot) {
706 mirror([0,0,1]) translate([0, -leg_fin_top_w/2, 0])
707 cube([ leg_fin_top_rad - 0.1,
711 translate([0, -leg_fin_bot_w/2, -leg_height])
712 cube([ leg_fin_bot_rad,
714 leg_fin_bot_flat_z ]);
718 mirror([0,0,1]) translate([0,0,-1])
719 cylinder(r= leg_hole_dia/2, h=leg_height+2, $fn=30);
720 mirror([0,0,1]) translate([0,0,leg_top_thick - 0.1])
721 cylinder(r= leg_midspc_dia/2,
722 h=leg_height - leg_top_thick - leg_bot_thick,
724 for (rot=[45: 360/leg_n_tubules : 359]) rotate(rot) {
725 mirror([0,0,1]) translate([ leg_tubule_pos_rad, 0, -1])
726 cylinder(r= leg_tubule_dia/2, h=leg_height+2, $fn=20);
731 function Rectangle_corners(c0, sz) =
732 // returns the corners of a rectangle from c0 to c0+sz
733 // if sz is positive, the corners are anticlockwise starting with c0
736 c0 + [ sz[0], sz[1] ],
739 function Rectangle_corners2posts(c) =
745 module Rectangle_TileBase(c) { TileBase(c[0], c[2]); }
747 function Posts_interpolate_one(c0,c1) = [c0, (c0+c1)/2, c1];
749 module Tile02(){ ////toplevel
751 c0 = tile02_tr + -sz;
752 c = Rectangle_corners(c0, sz);
753 posts = Rectangle_corners2posts(c);
757 Rectangle_TileBase(c);
759 RoundEdge(R_EDGE(c,0));
760 RoundEdge(R_EDGE(c,3));
761 InterlockEdge(R_EDGE(c,2), 0);
763 InterlockEdge(R_EDGE(c,1), 1);
770 module Tile12(){ ////toplevel
772 c0 = tile02_tr + [-sz[0], 0];
773 c = Rectangle_corners(c0, sz);
774 posts = Rectangle_corners2posts(c);
778 Rectangle_TileBase(c);
780 RoundEdge(R_EDGE(c,2));
781 RoundEdge(R_EDGE(c,3));
783 InterlockEdge(R_EDGE(c,0), 1);
784 InterlockEdge(R_EDGE(c,1), 1);
791 tile_01_11_cnr = tile01_tr + [-cutout_l_end_x, 0];
792 tile_11_10_cnr = tile01_tr + [0, cutout_tile11_y];
793 tile_01_00_cnr = tile01_tr - [0, cutout_tile01_y];
795 module Tile11(){ ////toplevel
797 c0 = tile01_tr + [-sz[0],0];
798 c = Rectangle_corners(c0, sz);
799 cnr_posts = Rectangle_corners2posts(c);
801 Posts_interpolate_one(cnr_posts[0],
802 cnr_posts[1] - [cutout_l_end_x, 0]),
803 [ cnr_posts[1] + [0, cutout_tile11_y],
809 Rectangle_TileBase(c);
811 RoundEdge(R_EDGE(c,2));
812 InterlockEdge(R_EDGE(c,3));
814 InterlockEdge(c[0], tile_01_11_cnr, 1);
815 InterlockEdge(tile_11_10_cnr, c[2], 1);
821 module Tile01(){ ////toplevel
823 c0 = tile01_tr + -sz;
824 c = Rectangle_corners(c0, sz);
825 cnr_posts = Rectangle_corners2posts(c);
827 Posts_interpolate_one(R_EDGE(cnr_posts,0)),
828 [ cnr_posts[2] + [0, -cutout_tile01_y] ],
829 Posts_interpolate_one(cnr_posts[2] - [cutout_l_end_x, 0],
834 Rectangle_TileBase(c);
836 RoundEdge(R_EDGE(c,0));
837 InterlockEdge(tile_01_11_cnr, c[3]);
838 InterlockEdge(R_EDGE(c,3));
841 InterlockEdge(c[1], tile_01_00_cnr, 1);
846 module Tile10(){ ////toplevel
848 c0 = tile01_tr + [0,0];
849 c = Rectangle_corners(c0, sz);
850 cnr_posts = Rectangle_corners2posts(c);
851 cty = cutout_tile11_y;
852 rcy = cty + rearcurve_avoid_y;
853 posts = [ cnr_posts[0] + [ 0, cty ],
854 cnr_posts[1] + [ -sz[0] + rearedge_len - cutout_l_end_x, cty ],
855 cnr_posts[1] + [ 0, rcy ],
861 Rectangle_TileBase(c);
863 RoundEdge(R_EDGE(c,1));
864 RoundEdge(R_EDGE(c,2));
865 InterlockEdge(c[3], tile_11_10_cnr);
874 module Tile00(){ ////toplevel
876 c0 = tile01_tr + [0,-sz[1]];
877 c = Rectangle_corners(c0, sz);
879 // the edge c[1]..c[2] needs a diagonal chunk, from c1bis to c2bis
880 c2bis = [ -cutout_l_end_x + frontedge_len + frontcurve_strt_len, c[2][1] ];
883 (c[2][0] - c2bis[0]) * tan(90 - frontcurve_dualcurve_angle) ];
885 cnr_posts = Rectangle_corners2posts(c);
886 cty = cutout_tile01_y;
887 rcy = cty + frontcurve_avoid_y;
888 posts = [ cnr_posts[0],
890 0.5 * (cnr_posts[0] + cnr_posts[1]),
891 cnr_posts[2] + [ 0, -rcy ],
892 cnr_posts[2] + [ -sz[0] + frontedge_len - cutout_l_end_x, -cty ],
893 cnr_posts[3] + [ 0, -cty ]
896 rc2 = [c1bis,c2bis,c[1]];
901 Rectangle_TileBase(c);
903 RoundEdge(R_EDGE(c,0));
904 RoundEdge(c[1], c1bis);
905 InterlockEdge(tile_01_00_cnr, c[0]);
908 translate([0,0,-20]) linear_extrude(height=40) {
909 polygon([ c1bis, c1bis + [50,0], c2bis + [50,0], c2bis ]);
912 RoundEdge(c1bis, c2bis);
922 module FitTest_general(c0,sz, dobrace=false, bracexx=0){
923 c = Rectangle_corners(c0, sz);
925 bsz = sz + [bracexx,0,0];
928 Rectangle_TileBase(c);
930 translate(concat(c0, [-brace[2] + 0.1])){
932 cube(concat(bsz, [brace[2]]) - [5,0,0]);
933 translate(brace + [0,0, -25])
934 cube(concat(bsz, [50]) - brace*2 + [10,0,0]);
938 RoundEdge(R_EDGE(c,1));
944 module FitTest_PairLink(cut=false){ ////toplevel
945 cy0=-55; cy1=85; cx=132;
948 footrad_min = 1; footrad_max = 4; footrad_depth = 5;
954 straphole_x_max = legrad/sqrt(2) + footrad_max;
955 dz = cut ? adj_neg_slop : 0;
957 translate([cx - bar[0]/2, cy0, dz + bar_z_slop])
958 cube([bar[0], cy1-cy0, bar[1] - bar_z_slop]);
960 for (endy=[cy0,cy1]) {
962 translate([cx,endy,dz]){
964 for (rot=[45:90:315]) rotate(rot) {
965 translate([legrad,0,0]){
967 cylinder(r= footrad_max, h=1);
968 translate([0,0,-footrad_depth])
969 cylinder(r= footrad_min, h=1);
973 cylinder(r= footrad_min +
974 adj_neg_slop * (footrad_max-footrad_min)/footrad_depth,
979 for (rot=[45,135]) rotate(rot) {
982 translate([s*legrad,0,0])
983 cylinder(r= footrad_max, h=bar[1]);
989 for (rot=[0,180]) rotate(rot) {
990 translate([ straphole_x_max - strap[0]/2, 0,0 ])
991 cube(concat(strap,[20]), center=true);
998 module FitTest_RearCurve(){ ////toplevel
1000 FitTest_general([100,0], [180,100]);
1001 FitTest_PairLink(true);
1006 module FitTest_FrontCurve(){ ////toplevel
1012 translate([0,0,-8]) linear_extrude(height=18) {
1013 translate(p0) square(sz);
1014 translate(teststrapslots_at[3])
1015 scale(2* [ teststrap_peg[0], teststrap[1] ])
1016 circle(r=1, $fn=20);
1019 FitTest_PairLink(true);
1024 module FitTest_Entire(){ ////toplevel
1027 szfront = [243,szrear[1]];
1029 FitTest_general(p0, szrear, dobrace=true, bracexx=0);
1030 FitTest_PairLink(true);
1031 translate(concat(p0,[0]) + [szfront[0],-10,-40])
1032 cube([100, -p0[1], 80]);
1036 FitTest_RearCurve();
1037 translate(concat(p0,[-20])) cube(concat(szrear,[40]));
1039 FitTest_FrontCurve();
1042 module FitTest_EntireDemo(){ ////toplevel
1047 module FitTest_EndEnd(){ ////toplevel
1050 sz2 = [136,68] - p0;
1052 FitTest_general(p0, sz);
1053 translate([ p0[0] -1, p0[1]+sz2[1], -10])
1054 cube([ sz2[0] +1, 50, 20 ]);
1058 module FitTest_PairDemo(){ ////toplevel
1062 %FitTest_FrontCurve();
1063 %FitTest_RearCurve();
1069 FitTest_FrontCurve();
1070 FitTest_RearCurve();
1072 #FitTest_PairLink(true);
1078 module RoundCornerDemo_plat(cnr){
1079 mirror([0,0,1]) linear_extrude(height=1) polygon(cnr);
1082 module RoundCornerDemo(){ ////toplevel
1083 cnr = [ [-2,-3], [13,-3], [-12,9] ];
1084 translate([0,25,0]) RoundCornerDemo_plat(cnr);
1085 translate([25,0,0]) RoundCornerAdd(cnr);
1086 translate([-25,0,0]) RoundCornerCut(cnr);
1087 translate([0,-25,0]) RoundCorner_selector(cnr, 0);
1089 RoundCornerDemo_plat(cnr);
1090 RoundCornerCut(cnr);
1092 RoundCornerAdd(cnr);
1095 module Demo(){ ////toplevel
1096 translate(demo_slop*[-2,1]) color("blue") Tile12();
1097 translate(demo_slop*[-2,0]) color("red") Tile02();
1098 translate(demo_slop*[-2,1]) color("orange") Tile11();
1099 translate(demo_slop*[-2,0]) color("purple") Tile01();
1100 translate(demo_slop*[-3,1]) color("blue") Tile10();
1101 translate(demo_slop*[-3,0]) color("red") Tile00();
1103 // Can also do this, to print reference sheet:
1104 // load this into openscad
1105 // select Ctrl-4 view, view all, scale appropriately
1106 // import sewing-table,Demo-flat.png
1107 // pngtopnm <sewing-table,Demo-flat.png | ppmbrighten -s -50 -v +100 >t.pnm
1115 //Machine_NewRearProfile();
1116 //Machine_NewRearCurve();
1117 //Machine_NewFrontProfile();
1118 //Machine_NewEndProfile();
1119 //Machine_NewEndProfileDemo();
1123 //MachineEnvelope();