add export debug event path

src/mode/fdm/client.js

@@ -481,8 +481,33 @@
                 return func.hoverup();
             }
         });
+        api.event.on("export.debug", msg => {
+            if (msg.arcQ && msg.arcQ.length > 5) {
+                if (xpdebug) {
+                    xpdebug.destroy();
+                    xpdebug = undefined;
+                }
+                let poly = BASE.newPolygon().setOpen();
+                for (let rec of msg.arcQ) {
+                    poly.addObj(rec);
+                }
+
+                let layers = new KIRI.Layers();
+                let layer = layers.setLayer("arcq", { line: 0xff00ff, face: 0xff00ff, opacity: 1 });
+                layer.addPoly(poly, {z:10, thin:true});
+
+                xpdebug = new KIRI.Stack(SPACE.platform.world, false);
+                xpdebug.addLayers(layers);
+                xpdebug.setVisible(0,Infinity);
+                xpdebug.show();
+
+                console.log(msg, poly);
+            }
+        });
     }
 
+    let xpdebug;
+
     function activeSupports() {
         const active = [];
         API.widgets.all().forEach(widget => {

src/mode/fdm/export.js

@@ -13,7 +13,7 @@
     /**
      * @returns {Array} gcode lines
      */
-    FDM.export = function(print, online) {
+    FDM.export = function(print, online, ondone, ondebug) {
         let layers = print.output,
             settings = FDM.fixExtruders(print.settings),
             getRangeParameters = FDM.getRangeParameters,
@@ -517,6 +517,7 @@
                     if (arcDist) {
                         let rec = {e:out.emit, x, y, z, dist, emitPerMM, speedMMM};
                         arcQ.push(rec);
+                        // ondebug({arcQ});
                         let deem = false; // do arcQ[0] and rec have differing emit values?
                         let depm = false; // do arcQ[0] and rec have differing emit speeds?
                         let desp = false; // do arcQ[0] and rec have differing move speeds?