From dca7c03bd77818e8bca38b93bb28ced93d6351fc Mon Sep 17 00:00:00 2001
From: Stewart Allen <sa@grid.space>
Date: Sun, 14 Dec 2025 00:18:34 -0500
Subject: [PATCH] fix arc output, add rounded corners expert option

---
 src/kiri/core/conf.js          | 1 +
 src/kiri/mode/cam/init-menu.js | 1 +
 src/kiri/mode/cam/op-area.js   | 4 +++-
 src/kiri/mode/cam/prepare.js   | 4 +++-
 web/kiri/lang/en.js            | 2 ++
 5 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/kiri/core/conf.js b/src/kiri/core/conf.js
index 39ccea78..bdb2e8a9 100644
--- a/src/kiri/core/conf.js
+++ b/src/kiri/core/conf.js
@@ -578,6 +578,7 @@ export const conf = {
                 camRoughStockZ: 0,
                 camRoughTool: 1000,
                 camRoughTop: true,
+                camRoundCorners: true,
                 camStockClipTo: false,
                 camStockIndexed: false,
                 camStockIndexGrid: true,
diff --git a/src/kiri/mode/cam/init-menu.js b/src/kiri/mode/cam/init-menu.js
index 595bfc95..114506b8 100644
--- a/src/kiri/mode/cam/init-menu.js
+++ b/src/kiri/mode/cam/init-menu.js
@@ -153,6 +153,7 @@ export function menu() {
     camArcTolerance:     newInput(LANG.cx_arct_s, {title:LANG.cx_arct_l, convert:toFloat, bound:bound(0,100), units, trigger, show:() => ui.camArcEnabled.checked}),
     camArcResolution:    newInput(LANG.cx_arcr_s, {title:LANG.cx_arcr_l, convert:toFloat, bound:bound(0,180), trigger, show:() => ui.camArcEnabled.checked}),
     camExpertFast:       newBoolean(LANG.cx_fast_s, onBooleanClick, { title:LANG.cx_fast_l }),
+    camRoundCorners:     newBoolean(LANG.cx_smof_s, onBooleanClick, { title:LANG.cx_smof_l }),
 
     };
 };
diff --git a/src/kiri/mode/cam/op-area.js b/src/kiri/mode/cam/op-area.js
index aace2cb6..309de7e9 100644
--- a/src/kiri/mode/cam/op-area.js
+++ b/src/kiri/mode/cam/op-area.js
@@ -39,6 +39,7 @@ class OpArea extends CamOp {
         let zBottom = Math.max(workarea.bottom_z, workarea.bottom_part);
         let shadowBase = state.shadow.base;
         let thruHoles = state.shadow.holes;
+        let roundSharps = settings.process.camRoundCorners;
 
         // also updates tab offsets
         setToolDiam(toolDiam);
@@ -116,7 +117,8 @@ class OpArea extends CamOp {
             let bounds = area.getBounds3D();
             let ts_off = toolDiam / 2 - ts_eps;
             let offopt = {
-                join: ClipperLib.JoinType.jtRound,
+                arc: 250,
+                join: roundSharps ? ClipperLib.JoinType.jtRound : undefined,
                 clean: true,
                 simple: false,
                 cleanDist: 10,
diff --git a/src/kiri/mode/cam/prepare.js b/src/kiri/mode/cam/prepare.js
index da3d05b7..e7acbe44 100644
--- a/src/kiri/mode/cam/prepare.js
+++ b/src/kiri/mode/cam/prepare.js
@@ -371,6 +371,7 @@ export async function prepare_one(widget, settings, print, firstPoint, update) {
         point = toWorkCoords(point);
 
         let {
+            center,
             factor = 1,
             feed = feedRate,
             shortCut = toolDiamMove,
@@ -545,7 +546,8 @@ export async function prepare_one(widget, settings, print, firstPoint, update) {
             point,
             emit,
             rate,
-            tool
+            tool,
+            { center }
         );
 
         return point;
diff --git a/web/kiri/lang/en.js b/web/kiri/lang/en.js
index cfe113ee..0bde72f2 100644
--- a/web/kiri/lang/en.js
+++ b/web/kiri/lang/en.js
@@ -917,6 +917,8 @@ self.lang['en-us'] = {
     cx_fast_l:      ["disable overhang detection","can be faster and use less","memory with complex models","but fails with overhangs","try enabling if slicing","hangs during shadowing"],
     cx_true_s:      "true shadow",
     cx_true_l:      ["computationally correct shadow","will be slower but produce","better cuts for complex parts"],
+    cx_smof_s:      "rounded corners",
+    cx_smof_l:      ["sharp outside angles","are converted to arcs"],
     cx_arce_s:      "arc output",
     cx_arce_l:      ["EXPERIMENTAL: enable path to arc conversion"],
     cx_arct_s:      "arc tolerance",