split cam ops

src2/kiri-mode/cam/op-index.js

@@ -0,0 +1,36 @@
+/** Copyright Stewart Allen <sa@grid.space> -- All Rights Reserved */
+
+import { CamOp } from './op.js';
+
+export class OpIndex extends CamOp {
+    constructor(state, op) {
+        super(state, op);
+    }
+
+    async slice() {
+        let { op, state } = this;
+        if (!state.isIndexed) {
+            throw 'index op requires indexed stock';
+        }
+        let { widget, updateSlicer, computeShadows, setAxisIndex } = state;
+        this.degrees = setAxisIndex(op.degrees, op.absolute);
+        // force recompute of topo
+        widget.topo = undefined;
+        updateSlicer();
+        await computeShadows();
+    }
+
+    prepare(ops, progress) {
+        const { lastPoint, zmax, zclear, camOut, stock } = ops;
+        let last = lastPoint();
+        if (last) {
+            // max point of stock corner radius when rotating (safe z when indexing)
+            const rzmax = (Math.max(stock.y, stock.z) * Math.sqrt(2)) / 2 + zclear;
+            const zmove = Math.max(rzmax, zmax);
+            // move above rotating stock
+            camOut(last = last.clone().setZ(zmove), 0);
+            // issue rotation command
+            camOut(last = last.clone().setY(0).setA(this.degrees), 0);
+        }
+    }
+}