From 55615e1784ea934e5f17b94a9e1a0049d26acfc2 Mon Sep 17 00:00:00 2001
From: Stewart Allen <sa@grid.space>
Date: Thu, 25 Sep 2025 00:11:40 -0400
Subject: [PATCH] filter unmodified subsegments used for proximity testing

---
 src/kiri/mode/fdm/post.js | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/kiri/mode/fdm/post.js b/src/kiri/mode/fdm/post.js
index 68da6933..826c2566 100644
--- a/src/kiri/mode/fdm/post.js
+++ b/src/kiri/mode/fdm/post.js
@@ -167,7 +167,12 @@ function offset_default(params) {
 
     for (let rec of thin_test) {
         if (rec.moved) {
-            rec.poly.points = rec.points;
+            let last_seg;
+            rec.poly.points = rec.points.filter((p,i) => {
+                let keep = (last_seg !== p.segment || p.moved || p.skip);
+                last_seg = p.segment;
+                return keep;
+            });
         }
     }