From e1753602f99f416eb58dc7e33ef41e27443edc0f Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Fri, 5 Feb 2016 18:09:52 +0000
Subject: [PATCH] commitid.scad.pl: 2d demo has bounding rectangles

---
 commitid.scad.pl | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/commitid.scad.pl b/commitid.scad.pl
index 489d5c2..f4a0d19 100755
--- a/commitid.scad.pl
+++ b/commitid.scad.pl
@@ -165,9 +165,15 @@ sub gentextmodule ($@) {
     p sprintf "function %s_sz() = Commitid__scale() * 0.1 * [ %d, %d ];\n",
 	$modb, 2 * ($cols * 4 - 1), 2 * (@lines * 6 - 1);
 
-    push @gtm_demo_o,
-	" translate([$gtm_demo_i * st[0], $gtm_demo_j * st[1]])".
-	" ${modb}_2D();\n";
+    push @gtm_demo_o, <<END;
+ translate([$gtm_demo_i * st[0], $gtm_demo_j * st[1]]) {
+  difference(){
+   color("blue") translate([-e,-e]) square(${modb}_sz() + 2*[e,e]);
+   square(${modb}_sz());
+  }
+  ${modb}_2D();
+}
+END
     $gtm_demo_j++;
 }
 
@@ -376,6 +382,7 @@ do_git();
 
 p "module Commitid_2DDemo(){\n";
 p " st = Commitid__scale() * [ 10, 5 ];\n";
+p " e  = Commitid_pixelsz();\n";
 p $_ foreach @gtm_demo_o;
 p "}\n";
 
-- 
2.30.2