float StandardTurbulence(float x, float y)
{
var scale = m_scale;
var amplitude = 1.0f;
var sum = 0.0f;
for (var i = 0; i < m_octaves; i++)
{
var period = (float)scale * (float)m_outputElevationWidth;
sum += amplitude * m_noise.GenerateSeamlessX(x * scale + m_xOffset, y * scale + m_yOffset, period);
scale *= m_lacunarity;
amplitude *= m_persistence;
}
return(sum * 0.5f + 0.5f);
}