From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Wed, 7 Sep 2016 17:04:08 +0000 (+0100)
Subject: lock-inframe-bracket: Add ref to Wolfram
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=commitdiff_plain;h=5eca8642d5af4d2d3be41785416697786209031b;p=reprap-play.git

lock-inframe-bracket: Add ref to Wolfram
---

diff --git a/lock-inframe-bracket.scad b/lock-inframe-bracket.scad
index b4b7f65..4001eaa 100644
--- a/lock-inframe-bracket.scad
+++ b/lock-inframe-bracket.scad
@@ -59,6 +59,7 @@ module oval(sz){ // sz[0] > sz[1]
 }
 
 module JoinCircs(jr){
+  # http://mathworld.wolfram.com/Circle-CircleIntersection.html
   R = tube_or + join_cr;
   r = lock_or[1] + join_cr;
   d = dist2d( [0,0], lock_0 );