Main improvements are:
- fog density now decays with altitude
- skybox and clouds are colored by fog
Computation
Most important values in computation:
- fogBase - base altitude for fog (in meters)
- beta0 - macroscopic cross-section of atmospheric scatterers at base altitude - determines density of fog based on distance from viewer at base altitude
- fogDecay - how much the fog density decays with altitude. 0 = constant density, 0.0049333 = density halves every 500m
Config
In world config following values can be configured:
startFogBase = 0.0; // base altitude for fog computations (in meters)
forecastFogBase = 0.0;
startFogDecay = 0.005; // decay coefficient - decay of fog with altitude
forecastFogDecay = 0.005;
fogBeta0Min = 0.0001; // beta0 (macroscopic cross-section of atmospheric scatterers at base level) for fog value 0
fogBeta0Max = 0.02; // beta0 (macroscopic cross-section of atmospheric scatterers at base level) for fog value 1
Script commands
Command setFog was extended - now can be used with some optional params.