1. Epic GamesDeveloper
  3. bUseInverseSquaredFalloff

bUseInverseSquaredFalloff

Whether to use physically based inverse squared distance falloff, where AttenuationRadius is only clamping the light's contribution.

API > API/Runtime > API/Runtime/Engine > API/Runtime/Engine/Components > API/Runtime/Engine/Components/UPointLightComponent

Syntax

UPROPERTY (EditAnywhere, BlueprintReadOnly, Category=Light, AdvancedDisplay)  
uint32 bUseInverseSquaredFalloff: 1

Remarks

Whether to use physically based inverse squared distance falloff, where AttenuationRadius is only clamping the light's contribution. Disabling inverse squared falloff can be useful when placing fill lights (don't want a super bright spot near the light). When enabled, the light's Intensity is in units of lumens, where 1700 lumens is a 100W lightbulb. When disabled, the light's Intensity is a brightness scale.

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