From 84bf821c6dd20b9855cc1f783895b9b2bd77ef9d Mon Sep 17 00:00:00 2001
From: Stewart Allen <sa@grid.space>
Date: Sat, 3 Jan 2026 00:44:50 -0500
Subject: [PATCH] add vertical wall clearing option for op-area like outline

---
 src/kiri/app/conf/defaults.js | 1 +
 src/kiri/mode/cam/cl-ops.js   | 2 ++
 src/kiri/mode/cam/op-area.js  | 2 +-
 web/kiri/lang/en.js           | 2 ++
 4 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/kiri/app/conf/defaults.js b/src/kiri/app/conf/defaults.js
index dcc37957..0038ba8d 100644
--- a/src/kiri/app/conf/defaults.js
+++ b/src/kiri/app/conf/defaults.js
@@ -449,6 +449,7 @@ export const conf = {
                 camAreaDogbones: false,
                 camAreaRevbones: false,
                 camAreaOutline: false,
+                camAreaWalls: false,
                 camAreaZigZag: true,
                 camContourAngle: 85,
                 camContourBottom: false,
diff --git a/src/kiri/mode/cam/cl-ops.js b/src/kiri/mode/cam/cl-ops.js
index 199533b8..d3a35c67 100644
--- a/src/kiri/mode/cam/cl-ops.js
+++ b/src/kiri/mode/cam/cl-ops.js
@@ -705,6 +705,7 @@ export function createPopOps() {
         rate: 'camAreaSpeed',
         plunge: 'camAreaPlunge',
         expand: 'camAreaExpand',
+        walls: 'camAreaWalls',
         smooth: 'camAreaSmooth',
         follow: 'camAreaFollow',
         refine: 'camAreaRefine',
@@ -730,6 +731,7 @@ export function createPopOps() {
         exp_end: UC.endExpand(),
         sep: UC.newBlank({ class: "pop-sep" }),
         exp: UC.newExpand("area modifiers", { }),
+        walls: UC.newBoolean(LANG.ca_wall_s, undefined, { title: LANG.ca_wall_l }),
         expand: UC.newInput(LANG.cp_xpnd_s, { title: LANG.cp_xpnd_l, convert: toFloat, units }),
         smooth: UC.newInput(LANG.cp_smoo_s, { title: LANG.cp_smoo_l, convert: toInt, xshow: isSurface }),
         follow: UC.newInput(LANG.cp_foll_s, { title: LANG.cp_foll_l, convert: toFloat }),
diff --git a/src/kiri/mode/cam/op-area.js b/src/kiri/mode/cam/op-area.js
index 35a6de58..f03c1bfd 100644
--- a/src/kiri/mode/cam/op-area.js
+++ b/src/kiri/mode/cam/op-area.js
@@ -186,7 +186,7 @@ class OpArea extends CamOp {
                     let firstOff = -(toolDiam / 2 + (op.leave_xy ?? 0));
                     POLY.subtract([ area ], shadow, clip, undefined, undefined, 0);
                     POLY.offset(clip, [ firstOff, -toolOver ], {
-                        count: op.steps ?? 999, outs, flat: true, z: z - zMov, ...offopt
+                        count: op.walls ? 1 : (op.steps ?? 999), outs, flat: true, z: z - zMov, ...offopt
                     });
                     // if we see no offsets, re-check the mesh bottom Z then exit
                     if (outs.length === 0) {
diff --git a/web/kiri/lang/en.js b/web/kiri/lang/en.js
index f5f12250..150fe28b 100644
--- a/web/kiri/lang/en.js
+++ b/web/kiri/lang/en.js
@@ -725,6 +725,8 @@ self.lang['en-us'] = {
     ca_altr_l:      "alternate direction of travel lines (zigzag)",
     ca_sang_s:      "step angle",
     ca_sang_l:      "crossing angle on the XY plane for contour lines",
+    ca_wall_s:      "walls",
+    ca_wall_l:      ["perform a single pass along vertical faces. leave interior spaces. similar to outline operation"],
 
     // OUTPUT
     ou_menu:        "output",