X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=wardrobe-hook.scad;h=959e967a78bd316ebb3345f182b8f7bcd00811d3;hp=532ec44322a17ae456f1c3b7af3d44636c6ec2c1;hb=f962452af777085bb7d7b1aab8adb60f75eb8066;hpb=345cb2f967a0422c9e91a7ce68edeb7c299fcd39

diff --git a/wardrobe-hook.scad b/wardrobe-hook.scad
index 532ec44..959e967 100644
--- a/wardrobe-hook.scad
+++ b/wardrobe-hook.scad
@@ -1,29 +1,7 @@
 // -*- C -*-
 
 include <funcs.scad>
-
-module FArcSegment_mask(beta) {
-  for (i=[0 : 0.75 : 3]) {
-    rotate(i*beta/4)
-      polygon([[0, 0],
-	       [1, 0],
-	       [cos(beta/4), sin(beta/4)]]);
-  }
-}
-
-module FArcSegment(xc,yc,inrad,outrad,alpha,delta) {
-  translate([xc,yc]) {
-    intersection() {
-      difference() {
-	circle(r=outrad, $fn=70);
-	circle(r=inrad, $fn=70);
-      }
-      rotate(alpha) scale(outrad*2) {
-	FArcSegment_mask(delta);
-      }
-    }
-  }
-}
+include <utils.scad>
 
 tubeslop = 0.5;
 tubeheight = 30 + tubeslop;
@@ -101,7 +79,7 @@ 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])
@@ -139,23 +117,76 @@ module SElevation(){
 	   [-1,         boty]]);
 }
 
-module SHook(){
+module SElevationPlaced(){
+  rotate([0,-90,0]) translate([0,0,-100]) linear_extrude(height=200)
+    SElevation();
+}
+
+module SHookL(){ ///toplevel
   intersection(){
     linear_extrude(height=topwidth) SPlan();
-    rotate([0,-90,0]) translate([0,0,-100]) linear_extrude(height=200)
-      SElevation();
+    SElevationPlaced();
   }
 }
 
-// toplevels etc.
+// 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];
 
-module RightHook(){ ////toplevel
-  mirror([1,0,0]) Hook();
+tbend_raw = tangents_intersect_beta(tjoin0c, tjoinrad,
+				    tjoin1c, -hookoutrad);
+tbend0 = angle_map_range(tbend_raw,       0);
+tbend1 = angle_map_range(tbend_raw + 180, -180);
+
+tbend0p = circle_point(tjoin0c, tjoinrad, tbend_raw);
+tbend1p = circle_point(tjoin1c, -hookoutrad, tbend_raw);
+
+module TPlan(){
+  ClipPlan(0, tstem0leny);
+  FArcSegment(tjoin0c[0],tjoin0c[1], tjoinrad,tjoinoutrad,
+	      tbend0, 360-tbend0);
+  FArcSegment(0,shookcy, hookinrad,hookoutrad,
+	      tbend1, 270+hookcurl - tbend1);
+  translate(tbend0p) {
+    rotate(tbend_raw+180) mirror([1,0]) {
+      translate([0,-0.1]) square(size=[mainthick, dist2d(tbend0p,tbend1p)+0.2]);
+    }
+  }
+}
+
+module THookR(){ ///toplevel
+  intersection(){
+    linear_extrude(height=topwidth) TPlan();
+    SElevationPlaced();
+  }
+}
+
+// other toplevels etc.
+
+module HookR(){ ////toplevel
+  mirror([1,0,0]) HookL();
+}
+
+module SHookR(){ ////toplevel
+  mirror([1,0,0]) SHookL();
 }
 
-translate([-30,0,0]) SHook();
-//SPlan();
-//translate([30,0,0]) SElevation();
-//translate([120,0,0]) ElevationCore();
-//ElevationCore();
-//RightHook();
+module THookL(){ ////toplevel
+  mirror([1,0,0]) THookR();
+}
+
+module Demo(){ ////toplevel
+  translate([-30,tubeheight,0]) HookL();
+  translate([  0,tubeheight,0]) HookR();
+  translate([ 30,         0,0]) SHookL();
+  translate([ 60,         0,0]) SHookR();
+  translate([ 90,         0,0]) THookL();
+  translate([120,         0,0]) THookR();
+}