improve mock for prime edge cases

Author: archmoj

test/image/baselines/gl3d_surface_contour_precision.png

@@ -2,17 +2,25 @@
     "data": [
         {
         "type": "surface",
-        "contours": {"x": {"show": true}, "y": {"show": true}, "z": {"show": true}},
-        "x": [0, 0.4321, 1],
-        "y": [0, 1],
-        "z": [[54321.9876, 54322.9876, 54321.9876], [54322.9876, 54321.9876, 54322.9876]]
+        "contours": {"x": {"show": false}, "y": {"show": false}, "z": {"show": true}},
+        "x": [0, 0.1485, 0.5, 0.9090, 1],
+        "y": [0, 0.5, 1],
+        "z": [
+                [54321.9876, 54322.9876, 54321.9876, 54322.9876, 54321.9876],
+                [54322.9876, 54321.9876, 54322.9876, 54321.9876, 54322.9876],
+                [54321.9876, 54322.9876, 54321.9876, 54322.9876, 54321.9876]
+            ]
         },
         {
         "type": "surface",
-        "contours": {"x": {"show": true}, "y": {"show": true}, "z": {"show": true}},
-        "x": [0, 0.4321, 1],
-        "y": [0, 1],
-        "z": [[54323.9876, 54322.9876, 54323.9876], [54322.9876, 54323.9876, 54322.9876]]
+        "contours": {"x": {"show": false}, "y": {"show": false}, "z": {"show": true}},
+        "x": [0, 0.1485, 0.5, 0.9090, 1],
+        "y": [0, 0.5, 1],
+        "z": [
+                [54323.9876, 54322.9876, 54323.9876, 54322.9876, 54323.9876],
+                [54322.9876, 54323.9876, 54322.9876, 54323.9876, 54322.9876],
+                [54323.9876, 54322.9876, 54323.9876, 54322.9876, 54323.9876]
+            ]
         }
     ],
     "layout": {
@@ -24,7 +32,7 @@
             "yaxis": {"nticks": 4},
             "zaxis": {"nticks": 48},
             "camera": {
-                "eye": {"x": 0, "y": 1.25, "z": 0},
+                "eye": {"x": 1, "y": 1, "z": 0},
                 "center": {"x": 0, "y": 0, "z": 0},
                 "up": {"x": 0, "y": 0, "z": 1}
             }