void UpdateStars()
{
float skyMul = (float)(Math.Cos(CelestialAngle * (2 * Math.PI)) * 4 + 0.5);
Utils.Clamp(ref skyMul, 0, 1);
FastColour newStarColour = FastColour.Lerp2(starColour, starColourHidden, skyMul);
if (newStarColour != curStarColour)
{
int newStarColourPacked = newStarColour.Pack();
for (int i = 0; i < starCount; i++)
{
vertices4[i].Colour = newStarColourPacked;
}
curStarColour = newStarColour;
}
}