wardrobe-hook: wip T version

[reprap-play.git] / wardrobe-hook.scad

diff --git a/wardrobe-hook.scad b/wardrobe-hook.scad
index 1f13834396102d26c66e726c128b648abbcc9814..69f95b557fa29de32bcd5eb32985cb78ad7e88fc 100644 (file)
--- a/wardrobe-hook.scad
+++ b/wardrobe-hook.scad
@@ -15,8 +15,8 @@ module FArcSegment(xc,yc,inrad,outrad,alpha,delta) {
   translate([xc,yc]) {
     intersection() {
       difference() {
-       circle(r=outrad);
-       circle(r=inrad);
+       circle(r=outrad, $fn=70);
+       circle(r=inrad, $fn=70);
       }
       rotate(alpha) scale(outrad*2) {
        FArcSegment_mask(delta);
@@ -25,16 +25,17 @@ module FArcSegment(xc,yc,inrad,outrad,alpha,delta) {
   }
 }
 
-tubeheight = 30;
-tubewidth = 15;
+tubeslop = 0.5;
+tubeheight = 30 + tubeslop;
+tubewidth = 15 + tubeslop;
 mainthick = 4;
 
 clipthick = 2;
-clipang = 120;
+clipang = 135;
 
-stemlen = 50;
+stemlen = 40;
 
-topwidth = 30;
+topwidth = 20;
 
 hookinrad = 7.5;
 hookcurl = 60;
@@ -51,20 +52,24 @@ elmid = [topwidth/2, -tuberad];
 ellow = tangent_intersect_b([0,hookcy], hookinrad, elmid);
 ellowextra = 180 - tangent_intersect_beta([0,hookcy], hookinrad, elmid);
 
-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);
+             90 + hookcurl + ellowextra);
   translate([-hookoutrad*sqrt(0.5),
              hookcy - hookoutrad*sqrt(0.5) + 0.1])
     mirror([1,0])
@@ -96,7 +101,7 @@ module PlaneAbove(){
 taperangle = -270 + tangent_intersect_beta([-hookcy, 0],
                                          hookoutrad,
                                          [-eltop[1], -eltop[0]]);
-module Hook(){ ////toplevel
+module HookL(){ ////toplevel
   difference(){
     rotate([taperangle,0,0])
       translate([0,-eltop[1],0])
@@ -109,5 +114,69 @@ module Hook(){ ////toplevel
   }
 }
 
-//ElevationCore();
-Hook();
+// 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 SHookL(){ ///toplevel
+  intersection(){
+    linear_extrude(height=topwidth) SPlan();
+    rotate([0,-90,0]) translate([0,0,-100]) linear_extrude(height=200)
+      SElevation();
+  }
+}
+
+// straight-on version, reversed, everything prefixed with t or T
+
+thookcy = shookcy;
+tstem0leny = tuberad;
+tbend_raw = tangents_intersect_beta([0,shookcy], hookinrad,
+                                   [0,-tstem0leny], -tuberad);
+echo(tbend_raw);
+tbend = angle_map_range(90-tbend_raw, -180);
+
+module TPlan(){
+  ClipPlan(0, tstem0leny);
+  FArcSegment(0,-tstem0leny, tuberad,mainoutrad,
+             tbend, 10);
+  FArcSegment(0,shookcy, hookinrad,hookoutrad,
+             tbend_raw, 270-tbend_raw + hookcurl);
+}
+
+// other toplevels etc.
+
+module HookR(){ ////toplevel
+  mirror([1,0,0]) HookL();
+}
+
+module SHookR(){ ////toplevel
+  mirror([1,0,0]) SHookL();
+}
+
+module Demo(){ ////toplevel
+  translate([-30,tubeheight,0]) HookL();
+  translate([  0,tubeheight,0]) HookR();
+  translate([ 30,         0,0]) SHookL();
+  translate([ 60,         0,0]) SHookR();
+}