From 4d592ea309607dc8bacc28686417341442120bd6 Mon Sep 17 00:00:00 2001
From: Stewart Allen <stewart.allen@gmail.com>
Date: Wed, 18 Nov 2020 10:06:25 -0500
Subject: [PATCH] fix countouring 'tails' and empty slices

---
 src/kiri/slicer2.js  | 5 ++++-
 src/mode/cam/topo.js | 2 +-
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/kiri/slicer2.js b/src/kiri/slicer2.js
index 3f01f0b6..0a6b986b 100644
--- a/src/kiri/slicer2.js
+++ b/src/kiri/slicer2.js
@@ -194,7 +194,10 @@
                 const mark = UTIL.time();
                 const rarr = [];
                 z.forEach((zv,zi) => {
-                    rarr.push(this.slice(zv, opt, zi, z.length, mark));
+                    const data = this.slice(zv, opt, zi, z.length, mark);
+                    if (data) {
+                        rarr.push(data);
+                    }
                 });
                 return rarr;
             }
diff --git a/src/mode/cam/topo.js b/src/mode/cam/topo.js
index 9b848568..b1506a44 100644
--- a/src/mode/cam/topo.js
+++ b/src/mode/cam/topo.js
@@ -59,7 +59,7 @@
                 tabsOn = proc.camTabsOn,
                 tabHeight = proc.camTabsHeight,
                 clipTab = tabsOn ? [] : null,
-                clipTo = inside ? shadow : POLY.expand(shadow, toolDiameter + resolution),
+                clipTo = inside ? shadow : POLY.expand(shadow, toolDiameter/2 + resolution * 3),
                 partOff = inside ? 0 : toolDiameter / 2 + resolution,
                 gridDelta = Math.floor(partOff / resolution),
                 debug = false,