+// straight-on version, everything prefixed with s or S
+
+shookcy = -(stemlen-hookoutrad);
+sstemleny = -shookcy;
+sbend_raw = tangents_intersect_beta([0,0],tuberad,
+ [0,shookcy],hookinrad);
+sbend = angle_map_range(360-sbend_raw, -180);
+
+module SPlan(){
+ ClipPlan(sbend, sstemleny);
+ FArcSegment(0,shookcy, hookinrad,hookoutrad,
+ 270 - hookcurl,
+ hookcurl + 90 - sbend);
+}
+
+module SElevation(){
+ boty = shookcy - hookoutrad - 1;
+ polygon([[-1, tubeheight],
+ [topwidth, tubeheight],
+ [topwidth, elmid[1]],
+ [hookwidth, shookcy],
+ [hookwidth, boty],
+ [-1, boty]]);
+}
+
+module SElevationPlaced(){
+ rotate([0,-90,0]) translate([0,0,-100]) linear_extrude(height=200)
+ SElevation();
+}
+
+module SHookL(){ ///toplevel
+ intersection(){
+ linear_extrude(height=topwidth) SPlan();
+ SElevationPlaced();
+ }
+}
+
+// straight-on version, reversed, everything prefixed with t or T
+
+tjoinrad = mainoutrad * 0.7;
+tstem0leny = tuberad - tjoinrad*0.5;
+tjoinoutrad = tjoinrad + mainthick;
+
+thookcy = shookcy;
+
+tjoin0c = [tuberad - tjoinrad, -tstem0leny];
+tjoin1c = [0, thookcy];