OptionaldirectionOptionallightThe light the flare belongs to. A directional light gives the direction of the source, an omni or spot light its position, and a spot light also limits the flare to its cone. The colour of the light tints the flare, and its intensity scales it, see LensFlare#useLightColor and LensFlare#useLightIntensity.
OptionalnodeThe node whose position is the source, when the flare has no light.
OptionalpositionThe world position of the source, when the flare has neither a light nor a node.
The world direction towards the source, for a source infinitely far away, when the flare has no light.