From 4404b6cee0717873de3e14e56a756ee7fc0201e3 Mon Sep 17 00:00:00 2001
From: Stewart Allen <stewart.allen@gmail.com>
Date: Thu, 1 Feb 2024 14:52:14 -0500
Subject: [PATCH] add zThru support for the roughing operation

---
 src/kiri-mode/cam/ops.js | 23 +++++++++++++++++++----
 1 file changed, 19 insertions(+), 4 deletions(-)

diff --git a/src/kiri-mode/cam/ops.js b/src/kiri-mode/cam/ops.js
index 09d8f7ad..f3dbb5d4 100644
--- a/src/kiri-mode/cam/ops.js
+++ b/src/kiri-mode/cam/ops.js
@@ -172,7 +172,7 @@ class OpRough extends CamOp {
         let { op, state } = this;
         let { settings, widget, slicer, addSlices, unsafe, color } = state;
         let { updateToolDiams, thruHoles, tabs, cutTabs, cutPolys } = state;
-        let { tshadow, shadowTop, ztOff, zBottom, zMax, shadowAt, isIndexed } = state;
+        let { tshadow, shadowTop, ztOff, zBottom, zThru, zMax, shadowAt, isIndexed } = state;
         let { process, stock } = settings;
 
         if (op.down <= 0) {
@@ -400,13 +400,28 @@ class OpRough extends CamOp {
                 // .addPolys(shadow)
                 .setLayer("rough shell", {line: 0xaa0000})
                 .addPolys(shell);
-            slice.output()
-                .setLayer("roughing", {face: color, line: color})
-                .addPolys(offset);
             progress(0.5 + 0.5 * (index / slices.length));
         });
 
+        let last = slices[slices.length-1];
+        for (let zneg of base.util.lerp(0, zThru, op.down)) {
+            if (!last) continue;
+            let add = last.clone(true);
+            add.z -= zneg;
+            add.camLines = last.camLines.clone(true);
+            add.camLines.forEach(p => p.setZ(add.z));
+            // add.tops.forEach(top => top.poly.setZ(add.z));
+            // add.shadow = last.shadow.clone(true);
+            slices.push(add);
+        }
+
+        slices.forEach(slice => {
+            slice.output()
+                .setLayer("roughing", {face: color, line: color})
+                .addPolys(slice.camLines);
+        });
         this.sliceOut = slices.filter(slice => slice.camLines);
+
         addSlices(this.sliceOut);
     }