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This represents UE4/Main @ 14525125 + cherrypicked fixes #skipundocheck [CL 14551026 by Marc Audy in ue5-main branch]
58 lines
1.2 KiB
C++
58 lines
1.2 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "CoreMinimal.h"
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/**
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* To load the IES file image format. IES files exist for many real world lights. The file stores how much light is emitted in a specific direction.
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* The data is usually measured but tools to paint IES files exist.
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*/
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class IESFILE_API FIESConverter
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{
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public:
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/** is loading the file, can take some time, success can be checked with IsValid() */
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FIESConverter(const uint8* Buffer, uint32 BufferLength);
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/**
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* @return true if the photometric data are valid
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* @note Call GetError to get a description of the error
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*/
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bool IsValid() const;
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/**
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* @return a brief description of the reason why the IES data is invalid
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*/
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const TCHAR* GetError() const;
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/**
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* @return Multiplier as the texture is normalized
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*/
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float GetMultiplier() const
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{
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return Multiplier;
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}
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/**
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* @return data to create UTextureProfile
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*/
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const TArray<uint8>& GetRawData() const
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{
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return RawData;
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}
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uint32 GetWidth() const;
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uint32 GetHeight() const;
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/**
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* @return brightness in Lumens
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*/
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float GetBrightness() const;
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private:
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TArray<uint8> RawData;
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float Multiplier;
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TSharedPtr<class FIESLoader> Impl;
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};
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