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  3. UTG_Expression

UTG_Expression

API > API/Plugins > API/Plugins/TextureGraph > API/Plugins/TextureGraph/Expressions

Inheritance Hierarchy

References

   
Module TextureGraph
Header /Engine/Plugins/Experimental/TextureGraph/Source/TextureGraph/Public/Expressions/TG_Expression.h
Include #include "Expressions/TG_Expression.h"

Syntax

UCLASS (Abstract)  
class UTG_Expression : public UObject

Variables

  Type Name Description
Protected variable UProperty int32 InstanceExpressionClassVersion UTG_Expression classes have a per instance expression class version number recovered from serialization.

Functions

  Type Name Description
Protected function Virtual Const bool  
Protected function Virtual Const FTG_SignaturePtr Build Signature in derived classes dynamically.
Protected function Virtual Const FTG_SignaturePtr Build the signature of the expression by collecting the FTG_ExpressionXXX UProperties of the class.
Public function Virtual bool

CanHandleAsset ( UObject* Asset
)

  
Public function Virtual Const bool  
Protected function Virtual void  
Protected function Virtual void

CopyVarGeneric ( const FTG_Argument& Arg,
FTG_Var* InVar,
bool CopyVarToArg
)

  
Protected function Virtual void  
Protected function Const FTG_Variant::EType  
Public function Virtual void This is THE evaluation call to overwrite.
Public function Virtual Const FName  
Protected function Virtual Const FTG_Variant::EType  
Public function Virtual Const FTG_Name  
Protected function Virtual Const int32 Method returning this Expression class version that can be overwritten in a sub class requiring to support version change
Public function Virtual Const UTG_Node * Expression notifies its parent node on key events.
Public function Virtual Const FTG_SignaturePtr  
Protected function Virtual Const FTG_Signature::FInit  
Public function Virtual Const FName  
Public function Virtual Const FText  
Protected function Virtual void Initialize the expression in cascade from the node allowing it to re create transient data This is called in the PostLoad of the Graph
Protected function Virtual void Log the actual values for vars and the expression evaluation Called from SetupAndEvaluate call if Context ask for it
Protected function Virtual Const void  
Public function Virtual Const void

NotifyExpressionChanged ( const FPropertyChangedEvent& PropertyChangedEvent
)

 If some state has changed in the expression that affects its representation triggered when a property has changed and needs to be copied over to its corresponding Var NB: required to be public for calling from TG_Variant customization
Protected function Virtual Const void If the signature changes and the node need to regenerate its own signature.
Public function void  
Public function Virtual void

SetAsset ( UObject* Asset
)

  
Public function Virtual void

SetTitleName ( FName NewName
)

  
Protected function Virtual void Called first from the Graph::Evaluate/Traverse which then call the Evaluate function.
Public function Virtual bool

Validate ( MixUpdateCyclePtr Cycle
)

 Validate internal checks, warnings and errors.
Public function void Validate that the expression conforms to a conformant function (e.g. Clamp etc.)

Overridden from UObject

  Type Name Description
Public function Virtual Const bool

CanEditChange ( const FProperty* InProperty
)

 Called by the editor to query whether a property of this object is allowed to be modified.
Protected function Virtual void

PostEditChangeProperty ( FPropertyChangedEvent& PropertyChangedEvent
)

 Called when a property on this object has been modified externally
Protected function Virtual void Called after applying a transaction to the object.
Public function Virtual void Override serialization to save Class Serialization version.

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