renderling::light::shader

Function radius_of_illumination

Source 
pub fn radius_of_illumination(
    intensity_candelas: f32,
    minimum_illuminance_lux: f32,
) -> f32
Expand description

Returns the radius of illumination in meters.

  • Moonlight: < 1 lux.
    • Full moon on a clear night: 0.25 lux.
    • Quarter moon: 0.01 lux
    • Starlight overcast moonless night sky: 0.0001 lux.
  • General indoor lighting: Around 100 to 300 lux.
  • Office lighting: Typically around 300 to 500 lux.
  • Reading or task lighting: Around 500 to 750 lux.
  • Detailed work (e.g., drafting, surgery): 1000 lux or more.