// Copyright Epic Games, Inc. All Rights Reserved.

/*=============================================================================
        ActorFactoryRectLight.cpp: Factory for RectLight
=============================================================================*/

#include "ActorFactories/ActorFactoryRectLight.h"
#include "GameFramework/Actor.h"
#include "Components/RectLightComponent.h"

void UActorFactoryRectLight::PostSpawnActor(UObject* Asset, AActor* NewActor)
{
    // Make all spawned actors use the candela units.
    TArray<URectLightComponent*> RectLightComponents;
    NewActor->GetComponents<URectLightComponent>(RectLightComponents);
    for (URectLightComponent* Component: RectLightComponents)
    {
        if (Component && Component->CreationMethod == EComponentCreationMethod::Native)
        {
            static const auto CVarDefaultLightUnits = IConsoleManager::Get().FindTConsoleVariableDataInt(TEXT("r.DefaultFeature.LightUnits"));
            ELightUnits DefaultUnits                = (ELightUnits)CVarDefaultLightUnits->GetValueOnAnyThread();

            // Passing .5 as CosHalfConeAngle  since URectLightComponent::SetLightBrightness() lumens conversion use only PI
            Component->Intensity *= URectLightComponent::GetUnitsConversionFactor(Component->IntensityUnits, DefaultUnits, .5f);
            Component->IntensityUnits = DefaultUnits;
        }
    }
}