Function opticalDepth

opticalDepth(
    a: AtmosphereOptions,
    planetRadius: number,
    p: Vec3,
    d: Vec3,
    steps?: number,
): Vec3 | null
Optical depths (Rayleigh, Mie, ozone; density × metres) from p along d to the top of the atmosphere. Returns null if the ray hits the planet.
Parameters
- a: AtmosphereOptions
- planetRadius: number
- p: Vec3
- d: Vec3
- steps: number = a.lightSteps
Returns Vec3 | null
- Defined in sky/src/scattering.ts:119