add cam expert menu and 'skip shadow' safety disable

src/mode/cam/slice.js

@@ -39,7 +39,8 @@
             minToolDiam = Infinity,
             maxToolDiam = -Infinity,
             thruHoles,
-            tabs = settings.widget[widget.id].tab;
+            tabs = settings.widget[widget.id].tab,
+            unsafe = proc.camExpertFast;
 
         if (tabs) {
             // make tab polygons
@@ -61,6 +62,10 @@
             });
         }
 
+        if (unsafe) {
+            console.log("disabling overhang safeties");
+        }
+
         if (!proc.ops || proc.ops.length === 0) {
             throw 'no processes specified';
         }
@@ -106,7 +111,8 @@
             zBottom,
             zThru,
             ztOff,
-            zMax
+            zMax,
+            unsafe
         };
 
         let opList = [