/// <summary>
/// Provides extension methods various types within Heirloom.
/// </summary>
public static float Sample(this INoise1D noise, float x, int octaves, float persistence = 0.5F)
{
var total = 0F;
var frequency = 1F;
var amplitude = 1F;
var maxValue = 0F;
for (var i = 0; i < octaves; i++)
{
total += noise.Sample(x * frequency) * amplitude;
maxValue += amplitude;
amplitude *= persistence;
frequency *= 2;
}
return(total / maxValue);
}