From 372aabb35fe4dc0cfb9dc7b74e516762ced5aaad Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Mon, 2 Jan 2017 15:35:52 +0000
Subject: [PATCH] sewing-table: Interlock: tongue/groove wip (nfc apart from
 echo)

---
 sewing-table.scad.m4 | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/sewing-table.scad.m4 b/sewing-table.scad.m4
index b09d59a..34f1c7d 100644
--- a/sewing-table.scad.m4
+++ b/sewing-table.scad.m4
@@ -185,10 +185,12 @@ module InterlockEdge(left_cnr, right_cnr, negative=0, nlobes=2) {
       ys0 = vsect[2];
       ys1 = vsect[2];
       ysd = ys1-ys0;
-      multmatrix([ [ 1,0,0,0 ],
-		   [ 0,1,0,0 ],
-		   [ 0,0,1,zs0 ],
-		   [ 0,0,0,1 ] ])
+      m = [ [ 1,0,0,0 ],
+	    [ 0,1,0,0 ],
+	    [ 0,0,1,zs0 ],
+	    [ 0,0,0,1 ] ];
+      echo(m);
+      multmatrix(m)
 	linear_extrude(height=zsd, convexity=10)
 	InterlockEdgePlan(negative, nlobes, length);
     }
-- 
2.30.2