add snap to worker and worker image processing

js/kiri-driver-sla.js

@@ -51,6 +51,11 @@ let gs_kiri_sla = exports;
             });
         }
 
+        let b64 = atob(currentSnap);
+        let bin = Uint8Array.from(b64, c => c.charCodeAt(0));
+        let img = new png.PNG().parse(bin);
+        console.log({img})
+
         SLICER.sliceWidget(widget, {
             height: process.slaSlice || 0.05
         }, function(slices) {

js/kiri-work.js

@@ -81,14 +81,22 @@ KIRI.work = {
         });
     },
 
+    snap : function(data) {
+        send("snap", data, function(reply) {
+            // console.log({snap:reply})
+        });
+    },
+
     slice : function(settings, widget, callback) {
-        let vertices = widget.getGeoVertices().buffer.slice(0);
+        let vertices = widget.getGeoVertices().buffer.slice(0),
+            snapshot = KIRI.api.view.snapshot;
         slicing[widget.id] = callback;
         send("slice", {
             id: widget.id,
             settings: settings,
             vertices: vertices,
-            position: widget.mesh.position
+            position: widget.mesh.position,
+            snapshot: snapshot
         }, function(reply) {
             if (reply.done || reply.error) delete slicing[widget.id];
             callback(reply);
@@ -98,7 +106,7 @@ KIRI.work = {
     printSetup : function(settings, callback) {
         send("printSetup", {settings:settings}, function(reply) {
             callback(reply);
-        });
+        }, undefined);
     },
 
     printExport : function(settings, online, ondone) {

js/kiri-worker.js

@@ -11,6 +11,7 @@ let ver = exports.VERSION,
     kiri = self.kiri,
     Widget = kiri.Widget,
     currentPrint,
+    currentSnap,
     cache = {};
 
 console.log(`kiri | init work | ${ver}`);
@@ -28,6 +29,11 @@ let dispatch = {
         send.done(vertices);
     },
 
+    snap: function(data, send) {
+        currentSnap = data;
+        send.done();
+    },
+
     slice: function(data, send) {
         let settings = data.settings,
             vertices = new Float32Array(data.vertices),

js/kiri.js

@@ -715,6 +715,7 @@ self.kiri.copyright = exports.COPYRIGHT;
         if (viewMode == VIEWS.ARRANGE) {
             let snap = SPACE.screenshot();
             API.view.snapshot = snap.substring(snap.indexOf(",")+1);
+            KIRI.work.snap(API.view.snapshot);
         }
 
         clearPrint();

js/web-server.js

@@ -875,6 +875,7 @@ let ver = require('../js/license.js'),
         ],
         work : [
             "ext-three",
+            "ext-pngjs",
             "license",
             "ext-clip2",
             "add-array",