From 16187156ae630cf20952fc84f67f01f9a3f6ca8d Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sun, 21 May 2017 22:20:51 +0100
Subject: [PATCH] sewing-table: some comments (nfc)

---
 sewing-table.scad.m4 | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/sewing-table.scad.m4 b/sewing-table.scad.m4
index 2995d9f..3b628e4 100644
--- a/sewing-table.scad.m4
+++ b/sewing-table.scad.m4
@@ -143,6 +143,8 @@ module RoundEdge(left_cnr, right_cnr) {
 }
 
 module RoundCornerCut(ci) {
+  // ci should be [this_cnr, right_cnr]
+  // where right_cnr is to the right (ie, anticlockwise)
   this_cnr = ci[0];
   right_cnr = ci[1];
   offr= round_cnr_rad - round_edge_rad;
@@ -292,6 +294,8 @@ module TestDemo(){ ////toplevel
 }
   
 function Rectangle_corners(c0, sz) =
+  // returns the corners of a rectangle from c0 to c0+sz
+  // if sz is positive, the corners are anticlockwise starting with c0
   [ c0 + [ 0,     0     ],
     c0 + [ sz[0], 0     ],
     c0 + [ sz[0], sz[1] ],
-- 
2.30.2