PointLightSceneProxy.h

Go to the documentation of this file.

// Copyright Epic Games, Inc. All Rights Reserved.
 
/*=============================================================================
    PointLightSceneProxy.h: Point light scene info definition.
=============================================================================*/
 
#pragma once
 
#include "CoreMinimal.h"
#include "Components/PointLightComponent.h"
#include "LocalLightSceneProxy.h"
#include "SceneManagement.h"
 
class FPointLightSceneProxy : public FLocalLightSceneProxy
{
public:
    float FalloffExponent;
 
    float SourceRadius;
 
    float SoftSourceRadius;
 
    float SourceLength;
 
    const uint32 bInverseSquared : 1;
 
    FPointLightSceneProxy(const UPointLightComponent* Component)
    :   FLocalLightSceneProxy(Component)
    ,   FalloffExponent(Component->LightFalloffExponent)
    ,   SourceRadius(Component->SourceRadius)
    ,   SoftSourceRadius(Component->SoftSourceRadius)
    ,   SourceLength(Component->SourceLength)
    ,   bInverseSquared(Component->bUseInverseSquaredFalloff)
    {
    }
 
    virtual float GetSourceRadius() const override
    { 
        return SourceRadius; 
    }
 
    virtual bool IsInverseSquared() const override
    {
        return bInverseSquared;
    }
 
    virtual void GetLightShaderParameters(FLightRenderParameters& LightParameters, uint32 Flags=0) const override;
 
    virtual FVector GetPerObjectProjectedShadowProjectionPoint(const FBoxSphereBounds& SubjectBounds) const override
    {
        return FMath::ClosestPointOnSegment(SubjectBounds.Origin, GetOrigin() - GetDirection() * SourceLength * 0.5f, GetOrigin() + GetDirection() * SourceLength * 0.5f);
    }
 
    virtual bool GetWholeSceneProjectedShadowInitializer(const FSceneViewFamily& ViewFamily, TArray<FWholeSceneProjectedShadowInitializer, TInlineAllocator<6> >& OutInitializers) const;
};