Merge pull request #4725 from plotly/fix-wave-fn-extreme-opacityscale

Fix "extremes" opacityscale function

Author: archmoj

src/traces/surface/defaults.js

@@ -24,7 +24,7 @@ function createWave(n, minOpacity) {
         var v = minOpacity + (1 - minOpacity) * (1 - Math.pow(Math.sin(n * u * Math.PI), 2));
         arr.push([
             u,
-            Math.max(1, Math.min(0, v))
+            Math.max(0, Math.min(1, v))
         ]);
     }
     return arr;