stop slicing on errors. alert when no cam processes selected

js/kiri-driver-cam.js

@@ -714,6 +714,10 @@ var gs_kiri_cam = exports;
             return ondone("invalid slice depth");
         }
 
+        if (!(procRough || procFinish || procFacing || procDrill)) {
+            return ondone("no processes selected");
+        }
+
         // cut outside traces at the right points
         const addCutoutTabs = function(slice, toolDiam) {
             // too high

js/kiri-widget.js

@@ -547,13 +547,14 @@ var gs_kiri_widget = exports;
                 if (reply.send_end) widget.stats.load_time = widget.xfer.start - reply.send_end;
                 if (reply.slices) { widget.clearSlices(); widget.slices = [] };
                 if (reply.slice) widget.slices.push(KIRI.codec.decode(reply.slice, {mesh:widget.mesh}));
-                if (reply.done) {
+                if (reply.error) {
+                    widget.cancel = true;
+                    ondone(false, reply.error);
+                }
+                if (reply.done && !widget.cancel) {
                     ondone(true);
                     widget.modified = false;
                 }
-                if (reply.error) {
-                    alert(reply.error);
-                }
             });
 
         } else {

js/kiri.js

@@ -1193,7 +1193,7 @@ self.kiri.license = exports.LICENSE;
 
             widget.stats.progress = 0;
             widget.setColor(widget_slicing_color);
-            widget.slice(settings, function(sliced) {
+            widget.slice(settings, function(sliced, error) {
                 var mark = UTIL.time();
                 // on done
                 widget.render(renderMode, MODE === MODES.CAM);
@@ -1214,7 +1214,7 @@ self.kiri.license = exports.LICENSE;
                     firstMesh = false;
                 }
                 // on the last exit, update ui and call the callback
-                if (--countdown === 0) {
+                if (--countdown === 0 || error) {
                     setProgress(0);
                     showSlices(preserveLayer);
                     if (callback && typeof callback === 'function') callback();
@@ -1222,6 +1222,13 @@ self.kiri.license = exports.LICENSE;
                 }
                 // update slider window
                 onControlResize();
+                // handle slicing errors
+                if (error) {
+                    setViewMode(VIEWS.ARRANGE);
+                    setOpacity(model_opacity);
+                    widgetDeselect();
+                    alert(error);
+                }
             }, function(update, msg) {
                 if (msg !== lastMsg) {
                     var mark = UTIL.time();

js/license.js

@@ -1,7 +1,7 @@
 var exports = {
     COPYRIGHT:"Copyright (C) 2014-2017 Stewart Allen <stewart@neuron.com> - All Rights Reserved",
     LICENSE:"Unauthorized copying, modification and re-distribution are strictly prohibited without prior written consent.",
-    VERSION:"1.0.75"
+    VERSION:"1.0.76"
 };
 if (!module) var module = {};
 module.exports = exports;