Make direct fill update

Author: dy

package-lock.json

@@ -99,7 +99,7 @@
     "polybooljs": "^1.2.0",
     "regl": "^1.3.1",
     "regl-error2d": "^2.0.3",
-    "regl-line2d": "^2.1.4",
+    "regl-line2d": "^2.1.5",
     "regl-scatter2d": "^2.1.16",
     "right-now": "^1.0.0",
     "robust-orientation": "^1.1.3",

package.json

@@ -781,9 +781,9 @@ function plot(container, subplot, cdata) {
         }
         // fill requires linked traces, so we generate it's positions here
         if(scene.fill2d) {
-            var fillOptions = scene.fillOptions.map(function(fillOptions, i) {
+            scene.fillOptions = scene.fillOptions.map(function(fillOptions, i) {
                 var cdscatter = cdata[i];
-                if(!fillOptions || !cdscatter || !cdscatter[0] || !cdscatter[0].trace) return {positions: []};
+                if(!fillOptions || !cdscatter || !cdscatter[0] || !cdscatter[0].trace) return null;
                 var cd = cdscatter[0];
                 var trace = cd.trace;
                 var stash = cd.t;
@@ -867,7 +867,7 @@ function plot(container, subplot, cdata) {
                 return fillOptions;
             });
 
-            scene.fill2d.update(fillOptions);
+            scene.fill2d.update(scene.fillOptions);
         }
     }