Fix textures in jar.

Normand Briere

2019-08-15 24a2a946b35279605e645349bd6b82e9e60aac88

 Grid.java
..
..
@@ -62,6 +62,16 @@
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 	*/
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     }
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+    double uStretch()
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+    {
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+        return 1;
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+    }
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+    
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+    double vFlip(double v)
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+    {
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+        return 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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         Vertex temp = new Vertex((2*v-1)*radius*4, 0 /*-radius,*/, (2*u-1)*radius*4);