Merge pull request #5 from saceria/master

Updates 2D Noise Function Scaling to [-1, 1]

Author: devdad

Source/SimplexNoise/Private/SimplexNoiseBPLibrary.cpp

@@ -222,7 +222,8 @@ float USimplexNoiseBPLibrary::SimplexNoise2D(float x, float y)
 
 	// Add contributions from each corner to get the final noise value.
 	// The result is scaled to return values in the interval [-1,1].
-	return 40.0f * (n0 + n1 + n2); // TODO: The scale factor is preliminary!
+	//return 40.0f * (n0 + n1 + n2); // TODO: The scale factor is preliminary!	//These values currently scale from ~ [-0.884343445, 0.884343445]
+	return 40.0f / 0.884343445f * (n0 + n1 + n2);	//accurate to e-9 so that values scale to [-1, 1], same acc as F2 G2.
 }