5 module FArcSegment_mask(beta) {
6 for (i=[0 : 0.75 : 3]) {
10 [cos(beta/4), sin(beta/4)]]);
14 module FArcSegment(xc,yc,inrad,outrad,alpha,delta) {
18 circle(r=outrad, $fn=70);
19 circle(r=inrad, $fn=70);
21 rotate(alpha) scale(outrad*2) {
22 FArcSegment_mask(delta);
29 tubeheight = 30 + tubeslop;
30 tubewidth = 15 + tubeslop;
44 tuberad = tubewidth/2;
45 mainoutrad = tuberad + mainthick;
46 hookoutrad = hookinrad + hookwidth;
47 $hookcy = -($stemlen - hookoutrad);
49 $eltop = [topwidth/2, -tuberad + tubeheight + mainthick + 0.1];
50 $elmid = [topwidth/2, -tuberad];
51 $ellow = tangent_intersect_b([0,$hookcy], hookinrad, $elmid);
52 $ellowextra = 180 - tangent_intersect_beta([0,$hookcy], hookinrad, $elmid);
56 module Howly(acrossly_x, frontbackly_x){
57 if (acrossly_x >= 0) {
58 translate([acrossly_x,0,0])
59 assign($bend = atan(tuberad/$stemlen),
63 if (frontbackly_x >= 0) {
64 translate([frontbackly_x,0,0])
72 dy = tubeheight - tuberad*2;
73 FArcSegment(0, dy, tuberad, mainoutrad, -1, 181);
74 FArcSegment(0, 0, tuberad, mainoutrad, -$bend, $bend+1);
75 translate([tuberad, 0]) square(center=false, size=[mainthick,dy]);
76 FArcSegment(0, 0, tuberad, tuberad + clipthick, 360-clipang, clipang+1);
77 rotate(-$bend) translate([tuberad, 0]) mirror([0,1])
78 square(center=false, size=[mainthick, $stemlen/cos($bend)]);
81 module ElevationCore(){
82 FArcSegment(0, $hookcy, hookinrad, hookoutrad,
84 90 + hookcurl + $ellowextra);
85 translate([-hookoutrad*sqrt(0.5),
86 $hookcy - hookoutrad*sqrt(0.5) + 0.1])
88 square(center=false, size=[topwidth, $stemlen + tubeheight + 20]);
89 polygon([[-hookoutrad, $ellow[1]],
96 // after here is all 3D
100 translate([0,0, -(topwidth+10)/2])
101 linear_extrude(height=topwidth+10) Plan();
104 linear_extrude(height=100)
110 translate([-100,-100,0]) cube(center=false,size=[200,200,200]);
113 taperangle = -270 + tangent_intersect_beta([-$hookcy, 0],
115 [-$eltop[1], -$eltop[0]]);
116 module Hook(){ ////toplevel
118 rotate([taperangle,0,0])
119 translate([0,-$eltop[1],0])
121 translate([0,0,topwidth/2])
122 rotate([taperangle*2,0,0])
124 translate([0,0,-topwidth/2])
125 mirror([0,0,1]) PlaneAbove(0);
129 module RightHook(){ ////toplevel
130 mirror([1,0,0]) Hook();
135 translate([70,0,0]) Frontbackly() child(0);