From 5fb0335fa368e27b09ca60456414106db02fc7f8 Mon Sep 17 00:00:00 2001
From: Adrian Mariano <avm4@cornell.edu>
Date: Sat, 1 Jan 2022 13:50:16 -0500
Subject: [PATCH] fix path_chamfer_and_rounding to accept 1-regions and check
 that input is a path

---
 paths.scad | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/paths.scad b/paths.scad
index 70e6158..40becf1 100644
--- a/paths.scad
+++ b/paths.scad
@@ -727,7 +727,11 @@ function path_torsion(path, closed=false) =
 //   stroke(path2, closed=true);
 function path_chamfer_and_rounding(path, closed=true, chamfer, rounding) =
   let (
-    path = deduplicate(path,closed=true),
+    p = force_path(path)
+  )
+  assert(is_path(p),"Input 'path' is not a path")
+  let(
+    path = deduplicate(p,closed=true),
     lp = len(path),
     chamfer = is_undef(chamfer)? repeat(0,lp) :
       is_vector(chamfer)? list_pad(chamfer,lp,0) :