clipthick = 2;
clipang = 135;
-$stemlen = 40;
+stemlen = 40;
topwidth = 20;
hookwidth = 4;
tuberad = tubewidth/2;
+bend = atan(tuberad/stemlen);
mainoutrad = tuberad + mainthick;
hookoutrad = hookinrad + hookwidth;
-$hookcy = -($stemlen - hookoutrad);
+hookcy = -(stemlen - hookoutrad);
-$eltop = [topwidth/2, -tuberad + tubeheight + mainthick + 0.1];
-$elmid = [topwidth/2, -tuberad];
-$ellow = tangent_intersect_b([0,$hookcy], hookinrad, $elmid);
-$ellowextra = 180 - tangent_intersect_beta([0,$hookcy], hookinrad, $elmid);
+eltop = [topwidth/2, -tuberad + tubeheight + mainthick + 0.1];
+elmid = [topwidth/2, -tuberad];
+ellow = tangent_intersect_b([0,hookcy], hookinrad, elmid);
+ellowextra = 180 - tangent_intersect_beta([0,hookcy], hookinrad, elmid);
-$bend = 0;
-
-module Howly(acrossly_x, frontbackly_x){
- if (acrossly_x >= 0) {
- translate([acrossly_x,0,0])
- assign($bend = atan(tuberad/$stemlen),
- $frontbackly = 0)
- child();
- }
- if (frontbackly_x >= 0) {
- translate([frontbackly_x,0,0])
- assign($bend = 0,
- $frontbackly = 1)
- child();
- }
-}
-
-module Plan(){
+module ClipPlan(qbend, qstemleny){
dy = tubeheight - tuberad*2;
FArcSegment(0, dy, tuberad, mainoutrad, -1, 181);
- FArcSegment(0, 0, tuberad, mainoutrad, -$bend, $bend+1);
+ FArcSegment(0, 0, tuberad, mainoutrad, -qbend, qbend+1);
translate([tuberad, 0]) square(center=false, size=[mainthick,dy]);
FArcSegment(0, 0, tuberad, tuberad + clipthick, 360-clipang, clipang+1);
- rotate(-$bend) translate([tuberad, 0]) mirror([0,1])
- square(center=false, size=[mainthick, $stemlen/cos($bend)]);
+ rotate(-qbend) translate([tuberad, 0]) mirror([0,1])
+ square(center=false, size=[mainthick, qstemleny/cos(qbend)]);
+}
+
+module Plan(){
+ ClipPlan(bend,stemlen);
}
module ElevationCore(){
- FArcSegment(0, $hookcy, hookinrad, hookoutrad,
- 180 - $ellowextra,
- 90 + hookcurl + $ellowextra);
+ FArcSegment(0, hookcy, hookinrad, hookoutrad,
+ 180 - ellowextra,
+ 90 + hookcurl + ellowextra);
translate([-hookoutrad*sqrt(0.5),
- $hookcy - hookoutrad*sqrt(0.5) + 0.1])
+ hookcy - hookoutrad*sqrt(0.5) + 0.1])
mirror([1,0])
- square(center=false, size=[topwidth, $stemlen + tubeheight + 20]);
- polygon([[-hookoutrad, $ellow[1]],
- reflect_in_y($eltop),
- $eltop,
- $elmid,
- $ellow]);
+ square(center=false, size=[topwidth, stemlen + tubeheight + 20]);
+ polygon([[-hookoutrad, ellow[1]],
+ reflect_in_y(eltop),
+ eltop,
+ elmid,
+ ellow]);
}
// after here is all 3D
translate([-100,-100,0]) cube(center=false,size=[200,200,200]);
}
-taperangle = -270 + tangent_intersect_beta([-$hookcy, 0],
+taperangle = -270 + tangent_intersect_beta([-hookcy, 0],
hookoutrad,
- [-$eltop[1], -$eltop[0]]);
+ [-eltop[1], -eltop[0]]);
module Hook(){ ////toplevel
difference(){
rotate([taperangle,0,0])
- translate([0,-$eltop[1],0])
+ translate([0,-eltop[1],0])
Primary();
translate([0,0,topwidth/2])
rotate([taperangle*2,0,0])
}
}
-module RightHook(){ ////toplevel
- mirror([1,0,0]) Hook();
-}
+// straight-on version, everything prefixed with s or S
+
+sstemleny = -hookcy;
+sbend_raw = tangents_intersect_beta([0,0],tuberad,
+ [0,-(stemlen-hookinrad)],hookinrad);
+sbend = angle_map_range(360-sbend_raw, -180);
-module Bothly() {
- Acrossly() child(0);
- translate([70,0,0]) Frontbackly() child(0);
+module SPlan(){
+ ClipPlan(sbend, sstemleny);
}
-Howly(0,70) {
- Plan();
- //ElevationCore();
- //RightHook();
+// toplevels etc.
+
+module RightHook(){ ////toplevel
+ mirror([1,0,0]) Hook();
}
+
+SPlan();
+translate([60,0,0]) Plan();
+//ElevationCore();
+//RightHook();