private Double Multi_Get(Double x, Double y)
{
var value = 1.00;
x *= Frequency;
y *= Frequency;
for (var i = 0; i < octaves; ++i)
{
value *= sources[i].Get(x, y) * expArray[i] + 1.0;
x *= Lacunarity;
y *= Lacunarity;
}
return value * correct[octaves - 1, 0] + correct[octaves - 1, 1];
}