the cone radius in radians. distance away from forward in which the light is visible.
for a torch a value around 0.15 is appropriate.
OptionalinnerAngle
innerAngle?:number
optional angle at which the light is brightest. should be <= outer angle.
if specified, the light will fall off smoothly between inner_angle and angle.
the cone radius in radians. distance away from forward in which the light is visible. for a torch a value around 0.15 is appropriate.