UNiagaraDataInterfaceSpline

Data Interface allowing sampling of in-world spline components.

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Inheritance Hierarchy

UObjectBase

UObjectBaseUtility

UObject

UNiagaraMergeable

UNiagaraDataInterfaceBase

UNiagaraDataInterface

UNiagaraDataInterfaceSpline

References

Module	Niagara
Header	/Engine/Plugins/FX/Niagara/Source/Niagara/Classes/NiagaraDataInterfaceSpline.h
Include	#include "NiagaraDataInterfaceSpline.h"

Syntax

UCLASS(EditInlineNew, Category="Splines", Meta=(DisplayName="Spline"))
class UNiagaraDataInterfaceSpline : public UNiagaraDataInterface

Remarks

Data Interface allowing sampling of in-world spline components.

that this data interface is very experimental.

Variables

	Name	Description
bool	bUseLUT
int32	NumLUTSteps
TObjectPtr< AAc...	Source	The source actor from which to sample.
FNiagaraUserPar...	SplineUserParameter	Reference to a user parameter if we're reading one.

Constructors

	Name	Description
	UNiagaraDataInterfaceSpline ( const FObjectInitializer& ObjectIn... )

Functions

		Name	Description
	void	FindClosestUnitDistanceFromPositionWS ( FVectorVMExternalFunctionContext& ... )
	void	GetLocalToWorld ( FVectorVMExternalFunctionContext& ... )
	void	GetLocalToWorldInverseTransposed ( FVectorVMExternalFunctionContext& ... )
	void	SampleSplineDirectionByUnitDistance ( FVectorVMExternalFunctionContext& ... )
	void	SampleSplinePositionByUnitDistance ( FVectorVMExternalFunctionContext& ... )
	void	SampleSplineRightVectorByUnitDistance ( FVectorVMExternalFunctionContext& ... )
	void	SampleSplineRotationByUnitDistance ( FVectorVMExternalFunctionContext& ... )
	void	SampleSplineTangentByUnitDistance ( FVectorVMExternalFunctionContext& ... )
	void	SampleSplineUpVectorByUnitDistance ( FVectorVMExternalFunctionContext& ... )

Overridden from UNiagaraDataInterface

	Name	Description
bool	AppendCompileHash ( FNiagaraCompileHashVisitor* In... )	Allows the generic class defaults version of this class to specify any dependencies/version/etc that might invalidate the compile.
bool	CanExecuteOnTarget ( ENiagaraSimTarget Target )
bool	CopyToInternal ( UNiagaraDataInterface* Destina... )
void	DestroyPerInstanceData ( void* PerInstanceData, FNiagaraSystemInstance* System... )	Destroys the per instance data for this interface.
bool	Equals ( const UNiagaraDataInterface* O... )	Determines if this DataInterface is the same as another.
void	GetCommonHLSL ( FString& OutHLSL )	Allows data interfaces to provide common functionality that will be shared across interfaces on that type.
bool	GetFunctionHLSL ( const FNiagaraDataInterfaceGPUParam..., const FNiagaraDataInterfaceGenerate..., int FunctionInstanceIndex, FString& OutHLSL )
void	GetFunctions ( TArray< FNiagaraFunctionSignature >... )	Gets all the available functions for this data interface.
void	GetParameterDefinitionHLSL ( const FNiagaraDataInterfaceGPUParam..., FString& OutHLSL )
void	GetVMExternalFunction ( const FVMExternalFunctionBindingInf..., void* InstanceData, FVMExternalFunction& OutFunc )	Returns the delegate for the passed function signature.
bool	HasPreSimulateTick()
bool	InitPerInstanceData ( void* PerInstanceData, FNiagaraSystemInstance* System... )	Initializes the per instance data for this interface.
int32	PerInstanceDataPassedToRenderThreadSize()	The size of the data this class will provide to ProvidePerInstanceDataForRenderThread.
int32	PerInstanceDataSize()	Returns the size of the per instance data for this interface.
bool	PerInstanceTick ( void* PerInstanceData, FNiagaraSystemInstance* System..., float DeltaSeconds )	Ticks the per instance data for this interface, if it has any.
bool	UpgradeFunctionCall ( FNiagaraFunctionSignature& Functio... )	Allows data interfaces the opportunity to rename / change the function signature and perform an upgrade.

Overridden from UNiagaraDataInterfaceBase

	Name	Description
void	BindParameters ( FNiagaraDataInterfaceParametersCS&..., const FNiagaraDataInterfaceGPUParam..., const FShaderParameterMap& Paramet... )	Methods that operate on an instance of type FNiagaraDataInterfaceParametersCS*, created by the above CreateComputeParameters() method
FNiagaraData...	CreateComputeParameters()	Constructs the correct CS parameter type for this DI (if any).
const FTypeL...	GetComputeParametersTypeDesc()
void	SetParameters ( const FNiagaraDataInterfaceParamete..., FRHICommandList& RHICmdList, const FNiagaraDataInterfaceSetArgs ... )
void	UnsetParameters ( const FNiagaraDataInterfaceParamete..., FRHICommandList& RHICmdList, const FNiagaraDataInterfaceSetArgs ... )

Overridden from UObject

		Name	Description
	void	PostInitProperties()	Called after the C++ constructor and after the properties have been initialized, including those loaded from config.