From ab422d20c0998ff481c9a6fe778e9d6f19e740b9 Mon Sep 17 00:00:00 2001
From: Stewart Allen <stewart.allen@gmail.com>
Date: Sat, 15 Oct 2022 21:27:53 -0400
Subject: [PATCH] fix for omissions of small lines

---
 src/kiri/layers.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/kiri/layers.js b/src/kiri/layers.js
index b16d9060..91541b9c 100644
--- a/src/kiri/layers.js
+++ b/src/kiri/layers.js
@@ -217,6 +217,10 @@ class Layers {
             const { faces, normals } = poly.toPath3D(offset, height, 0);
             const cur = this.current;
             const one = cur.paths;
+            // happens with very short lines being omitted
+            if (!(faces && normals)) {
+                continue;
+            }
             if (one) {
                 // merge all contour geometry for massive speed gain
                 // todo: recode to concat all geometries at once, and not incrementally