ternary fill image test

Author: alexcjohnson

test/image/baselines/ternary_fill.png

@@ -0,0 +1,26 @@
+{
+    "data": [
+        {
+            "a": [0.4, 0.4, 0.2, 0.4],
+            "b":[0.2, 0.4, 0.4, 0.2],
+            "type": "scatterternary",
+            "fill": "tonext"
+        },
+        {
+            "a":[0.5, 0.5, 0, 0.5],
+            "b":[0, 0.5, 0.5, 0],
+            "type": "scatterternary",
+            "fill": "tonext"
+        },
+        {
+            "a": [0.8, 0.6, 0.6, 0.8, null, 0.1, 0.1, 0.3, 0.1, null, 0.1, 0.1, 0.3, 0.1],
+            "b": [0.1, 0.1, 0.3, 0.1, null, 0.8, 0.6, 0.6, 0.8, null, 0.3, 0.1, 0.1, 0.3],
+            "type": "scatterternary",
+            "fill": "toself"
+        }
+    ],
+    "layout": {
+        "height": 400,
+        "width": 500
+    }
+}