Fix box and VR keys.

Normand Briere

2019-08-16 64e20f390e4b8e58bd0006dde8fa10fba1dac1d5

 Superellipsoid.java
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@@ -153,6 +153,11 @@
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         return 2;
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     }
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+    double vFlip(double v)
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+    {
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+        return 1-v;
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+    }
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+    
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     Vertex biparamFunction(double u, double v)
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     {
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 		//System.out.println("U = " + u + "; V = " + v);