add vertical wall clearing option for op-area like outline

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,

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 }),

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) {

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",