DatasmithSceneXmlReader.h

// Copyright 1998-2019 Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "DatasmithMaterialElements.h"
#include "IDatasmithSceneElements.h"
 
class FXmlFile;
class FXmlNode;
class UTexture;
 
class DATASMITHCORE_API FDatasmithSceneXmlReader
{
public:
    // Force non-inline constructor and destructor to prevent instantiating TUniquePtr< FXmlFile > with an incomplete FXmlFile type (forward declared)
    FDatasmithSceneXmlReader();
    ~FDatasmithSceneXmlReader();
 
    bool ParseFile(const FString& InFilename, TSharedRef< IDatasmithScene >& OutScene, bool bInAppend = false);
    bool ParseBuffer(const FString& XmlBuffer, TSharedRef< IDatasmithScene >& OutScene, bool bInAppend = false);
 
private:
    bool ParseXmlFile(TSharedRef< IDatasmithScene >& OutScene, bool bInAppend = false);
 
    void PatchUpVersion(TSharedRef< IDatasmithScene >& OutScene);
 
    void ParseElement(FXmlNode* InNode, TSharedRef<IDatasmithElement> OutElement) const;
    void ParseLevelSequence(FXmlNode* InNode, const TSharedRef<IDatasmithLevelSequenceElement>& OutElement) const;
    void ParseMesh(FXmlNode* InNode, TSharedPtr<IDatasmithMeshElement>& OutElement) const;
    void ParseTextureElement(FXmlNode* InNode, TSharedPtr<IDatasmithTextureElement>& OutElement) const;
    void ParseTexture(FXmlNode* InNode, FString& OutTextureFilename, FDatasmithTextureSampler& OutTextureUV) const;
    void ParseTransform(FXmlNode* InNode, TSharedPtr< IDatasmithActorElement >& OutElement) const;
    FTransform ParseTransform(FXmlNode* InNode) const;
    void ParseActor(FXmlNode* InNode, TSharedPtr<IDatasmithActorElement>& InOutElement, TSharedRef< IDatasmithScene > Scene, TMap< FString, TSharedPtr<IDatasmithActorElement> >& Actors) const;
    void ParseMeshActor(FXmlNode* InNode, TSharedPtr<IDatasmithMeshActorElement>& OutElement, TSharedRef< IDatasmithScene > Scene) const;
    void ParseHierarchicalInstancedStaticMeshActor(FXmlNode* InNode, TSharedPtr<IDatasmithHierarchicalInstancedStaticMeshActorElement>& OutElement, TSharedRef< IDatasmithScene > Scene) const;
    void ParseLight(FXmlNode* InNode, TSharedPtr<IDatasmithLightActorElement>& OutElement) const;
    void ParseCamera(FXmlNode* InNode, TSharedPtr<IDatasmithCameraActorElement>& OutElement) const;
    void ParsePostProcess(FXmlNode* InNode, const TSharedPtr< IDatasmithPostProcessElement >& Element) const;
    void ParsePostProcessVolume(FXmlNode* InNode, const TSharedRef< IDatasmithPostProcessVolumeElement >& Element) const;
    void ParseColor(FXmlNode* InNode, FLinearColor& OutColor) const;
    void ParseComp(FXmlNode* InNode, TSharedPtr< IDatasmithCompositeTexture >& OutCompTexture, bool bInIsNormal = false) const;
    void ParseMaterial(FXmlNode* InNode, TSharedPtr< IDatasmithMaterialElement >& OutElement) const;
    void ParseMasterMaterial(FXmlNode* InNode, TSharedPtr< IDatasmithMasterMaterialElement >& OutElement) const;
    void ParseUEPbrMaterial(FXmlNode* InNode, TSharedPtr< IDatasmithUEPbrMaterialElement >& OutElement) const;
    void ParseCustomActor(FXmlNode* InNode, TSharedPtr< IDatasmithCustomActorElement >& OutElement) const;
    void ParseMetaData(FXmlNode* InNode, TSharedPtr< IDatasmithMetaDataElement >& OutElement, const TSharedRef< IDatasmithScene >& InScene, TMap< FString, TSharedPtr<IDatasmithActorElement> >& Actors) const;
    void ParseLandscape(FXmlNode* InNode, TSharedRef< IDatasmithLandscapeElement >& OutElement) const;
 
    template< typename ElementType >
    void ParseKeyValueProperties(const FXmlNode* InNode, ElementType& OutElement) const;
 
    bool LoadFromFile(const FString& InFilename);
    bool LoadFromBuffer(const FString& XmlBuffer);
 
    FString ResolveFilePath(const FString& InAssetFile) const;
 
    FQuat QuatFromHexString(const FString& HexString) const;
 
    TUniquePtr< FXmlFile > XmlFile;
    FString ProjectPath;
};