X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=cliphook.scad;h=d2681bb89692f6f5fb859b4079228978297d5dd3;hp=63f5d9be5e572390e2adddc5704e179af6e9f225;hb=90e91479f2f71f1f4b9882fbdf6e0d3f7c0a673c;hpb=11028849c9b5863820e9bf702b51f5f805acaf7b

diff --git a/cliphook.scad b/cliphook.scad
index 63f5d9b..d2681bb 100644
--- a/cliphook.scad
+++ b/cliphook.scad
@@ -7,7 +7,7 @@ function ClipHook_xe(w,g,l,ye,k) =
 	sqrt(pow( ClipHook_r3(w,g,l,ye,k),      2) -
 	     pow( ClipHook_yd(w,g,l,ye,k) - ye, 2));
 
-module FlatArc(cx,cy,r1,r2,a1,a2=360) {
+module FlatArc(cx,cy,r1,r2,a1,a2=361,$fn=$fn) {
   astep = (a2-a1)/6;
   size = 5*(r2/2);
   translate([cx,cy,0]) {
@@ -38,7 +38,7 @@ module ClipHook_2D(w,g,l,ye,k,h) {
 
   xd = l*1.5 + w;
   xc = -l/2;
-  yc = g/w + w/2;
+  yc = g/2 + w/2;
 
   alpha = atan2((xe-xd)/r3, (ye-yd)/r3);
 
@@ -59,12 +59,26 @@ module ClipHook_2D(w,g,l,ye,k,h) {
   jcirc(xe,ye);
 }
 
-module ClipHook(w=1.2, g=0.2, l=0.0, ye=0, k=2.0, h=3.5, demo=false) {
-  linear_extrude(height=h)
-    ClipHook_2D(w,g,l,ye,k);
-  if (demo)
-    %linear_extrude(height=h)
-      translate([l+w,0,0]) rotate(180) ClipHook_2D(w,g,l,ye,k);
+module ClipHook(w=1.2, g=0.2, l=0.0, ye=0, k=2.0, h=3.5, demo=false,
+		cupcaph=0, cupgapg=0) {
+  difference() {
+    linear_extrude(height=h)
+      ClipHook_2D(w,g,l,ye,k);
+    if (cupcapg != 0) {
+      translate([-g+0.01,-(w+g),h-cupcapg])
+      cube([w,(w+g),cupcaph+1]);
+    }
+  }
+  if (cupcaph != 0) {
+    translate([-l/2, g/2+w/2, h-0.01])
+      intersection() {
+        cylinder(r=ClipHook_r2(w,g,l,ye,k)+w/2, h=cupcaph, $fn=16);
+	translate([-50-g,-50,-1]) cube([50,100,h+2]);
+      }
+  }
 }
 
-//ClipHook(l=3, ye=1.5, k=1, demo=true);
+if (ClipHook_demo) {
+  ClipHook(l=0, k=1, cupcaph=1, cupcapg=0.4);
+  %translate([l+w,0,0]) rotate(180) ClipHook(l=0, k=1, cupcaph=1, cupcapg=0.4);
+}