Sets overcast threshold values for snowfall phenomena.
Snowfall can start only if actual overcast value is in given range of <tMin, tMax>. If it's already snowing and actual overcast value gets out of given range then snowfall will stop in given tTime seconds.
Default values are: tMin = 0.6 tMax = 1 tTime = 30
tMin | Minimal overcast value (in range <0, 1>). |
tMax | Maximal overcast value (in range <0, 1>). |
tTime | Time in seconds when it stops snowing. |