/// <summary>
/// Calculates the maximum luminance for the supplied turbidity and sun theta
/// </summary>
public static float MaximumLuminance(float turbidity, float sunTheta, xyYColor zenith, xyYCoeffs coeffs)
{
float theta = sunTheta;
if (sunTheta >= HALF_PI) theta = HALF_PI - 0.01f;
return Distribution(coeffs.Y, theta, zenith.Y, 0f) * 1.5f;
}
/// <summary>
/// Calculates the RGB atmospheric color (fog + lightning use this in sunrise/sunset)
/// </summary>
public static float[] AtmosphereColor(float turbidity, float sunTheta, xyYColor zenith, xyYCoeffs coeffs)
{
float theta = Math.Min(sunTheta + 0.15f, HALF_PI - 0.01f);
xyYColor skyColor;
// Sky color distribution (using the Perez Function)
skyColor.x = Distribution(coeffs.x, theta, zenith.x, 0.2f);
skyColor.y = Distribution(coeffs.y, theta, zenith.y, 0.2f);
skyColor.Y = 0.5f;
float[] ret = xyYtoRGB(skyColor);
return ret;
}
