Rhino Directional light Falloff

Rendering
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1

Hello!

I have a question regarding the Rhino Directional Light Falloff. Since the location of the light does not matter, what is the purpose of the Linear and Inverse Squared Falloff options?
I see that there are differences between Constant and Linear/Inverse Squared Falloff in Rendered and Raytraced view:

Raytraced_Directional_Light_Constant
Raytraced_Directional_Light_Constant1175×481 54.6 KB

Raytraced_Directional_Light_Linear
Raytraced_Directional_Light_Linear1137×503 60.9 KB

Rendered_Directional_Light_Constant
Rendered_Directional_Light_Constant1222×510 56.5 KB

Rendered_Directional_Light_Linear
Rendered_Directional_Light_Linear1210×509 57.3 KB

Thank you in advance!

Kind regards,
Iva

2

As I understand it, the Sun and other “directional” lights ignore the fall off option.