From 52f6f40034a146202315424f829c6816efb7a393 Mon Sep 17 00:00:00 2001
From: Stewart Allen <stewart.allen@gmail.com>
Date: Thu, 12 Jan 2023 00:15:33 -0500
Subject: [PATCH 1/2] back out mem ref clear (causes support issues). bump rev
 3.8.D9

---
 package.json               | 2 +-
 src/geo/slicer.js          | 2 +-
 src/kiri-mode/fdm/slice.js | 1 +
 src/main/kiri.js           | 2 +-
 src/moto/license.js        | 2 +-
 5 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/package.json b/package.json
index 49d12420..cad51233 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "grid-apps",
-    "version": "3.8.8D",
+    "version": "3.8.9D",
     "description": "grid.space 3d slice & modeling tools",
     "author": "Stewart Allen <sa@grid.space>",
     "license": "MIT",
diff --git a/src/geo/slicer.js b/src/geo/slicer.js
index 16a38ec9..ac509546 100644
--- a/src/geo/slicer.js
+++ b/src/geo/slicer.js
@@ -405,7 +405,7 @@ async function sliceZ(z, points, options = {}) {
     }
 
     // free objects to be re-claimed and reduce memory pressure
-    if (true) {
+    if (false) {
         delete rval.groups
         delete rval.lines
         delete rval.clip.m_AllPolys
diff --git a/src/kiri-mode/fdm/slice.js b/src/kiri-mode/fdm/slice.js
index a50b2326..54f1c256 100644
--- a/src/kiri-mode/fdm/slice.js
+++ b/src/kiri-mode/fdm/slice.js
@@ -349,6 +349,7 @@ FDM.slice = function(settings, widget, onupdate, ondone) {
             widget.shadow = root.shadow;
             return;
         }
+        console.log({ doShadow: widget, slices });
         // create shadow for clipping supports
         let alltops = widget.group
             .filter(w => !w.track.synth) // no supports in shadow
diff --git a/src/main/kiri.js b/src/main/kiri.js
index 91765bc9..5cbce0b9 100644
--- a/src/main/kiri.js
+++ b/src/main/kiri.js
@@ -15,7 +15,7 @@ gapp.main("main.kiri", [], (root) => {
     const modfns = root.kirimod = ( root.kirimod || [] );
 
     const kiri = root.kiri = {
-        beta: 3808,
+        beta: 3809,
         driver: {}, // driver modules
         load(fn) {
             modfns.push(fn);
diff --git a/src/moto/license.js b/src/moto/license.js
index a24eb707..a4fc30a6 100644
--- a/src/moto/license.js
+++ b/src/moto/license.js
@@ -5,7 +5,7 @@
     let terms = {
         COPYRIGHT: "Copyright (C) Stewart Allen <sa@grid.space> - All Rights Reserved",
         LICENSE: "See the license.md file included with the source distribution",
-        VERSION: (is_self ? self : this).debug_version || "3.8.D8"
+        VERSION: (is_self ? self : this).debug_version || "3.8.D9"
     };
 
     if (typeof(module) === 'object') {

From 03bf0eae77a419170128fd9975b171757f345b07 Mon Sep 17 00:00:00 2001
From: Stewart Allen <stewart.allen@gmail.com>
Date: Thu, 12 Jan 2023 00:28:21 -0500
Subject: [PATCH 2/2] re-enable ref cleaning with changes

---
 src/geo/slicer.js | 23 +++++++++++++++--------
 1 file changed, 15 insertions(+), 8 deletions(-)

diff --git a/src/geo/slicer.js b/src/geo/slicer.js
index ac509546..fa099c2c 100644
--- a/src/geo/slicer.js
+++ b/src/geo/slicer.js
@@ -405,20 +405,27 @@ async function sliceZ(z, points, options = {}) {
     }
 
     // free objects to be re-claimed and reduce memory pressure
-    if (false) {
+    if (true) {
         delete rval.groups
         delete rval.lines
-        delete rval.clip.m_AllPolys
 
+        if (rval.tops)
         for (let top of rval.tops) {
-            top.poly.freeParentRefs();
-            top.simple.freeParentRefs();
-            for (let shell of top.shells) shell.freeParentRefs();
-            for (let fillo of top.fill_off) fillo.freeParentRefs();
-            for (let last of top.last) last.freeParentRefs();
+            if (top.poly) {
+                top.poly.freeParentRefs();
+                top.simple.freeParentRefs();
+                for (let shell of top.shells) shell.freeParentRefs();
+                for (let fillo of top.fill_off) fillo.freeParentRefs();
+                for (let last of top.last) last.freeParentRefs();
+            } else {
+                top.freeParentRefs();
+            }
         }
 
-        for (let clip of rval.clip) clip.freeParentRefs();
+        if (rval.clip) {
+            for (let clip of rval.clip) clip.freeParentRefs();
+            if (rval.clip.m_AllPolys) delete rval.clip.m_AllPolys
+        }
     }
 
     if (each) each(rval);