From b04d1628ce81bb99bd50f1680203902eac01e032 Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sat, 15 Feb 2014 12:15:23 +0000
Subject: [PATCH] wardrobe-hook: wip

---
 wardrobe-hook.scad | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 wardrobe-hook.scad

diff --git a/wardrobe-hook.scad b/wardrobe-hook.scad
new file mode 100644
index 0000000..b247bd0
--- /dev/null
+++ b/wardrobe-hook.scad
@@ -0,0 +1,26 @@
+// -*- C -*-
+
+module FArcSegment_mask(beta) {
+  for (i=[0 : 0.75 : 3]) {
+    rotate(i*beta/4)
+      polygon([[0, 0],
+	       [1, 0],
+	       [cos(beta), sin(beta)]]);
+  }
+}
+
+module FArcSegment(xc,yc,inrad,outrad,alpha,delta) {
+  translate(xc,yc) {
+    intersection() {
+      difference() {
+	circle(r=outrad);
+	circle(r=inrad);
+      }
+      rotate(alpha) scale(outrad*2) {
+	FArcSegment_mask(delta);
+      }
+    }
+  }
+}
+
+FArcSegment(10,10, 20,30, 20,10);
-- 
2.30.2