FConnectionDrawingPolicy

This class draws the connections for an [UEdGraph](API\Runtime\Engine\EdGraph\UEdGraph) composed of pins and nodes.

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Inheritance Hierarchy

FConnectionDrawingPolicy

	FAIGraphConnectionDrawingPolicy
	FConversationGraphConnectionDrawingPolicy
	FKismetConnectionDrawingPolicy
	FNiagaraConnectionDrawingPolicy
	FSoundSubmixGraphConnectionDrawingPolicy

References

Module	GraphEditor
Header	/Engine/Source/Editor/GraphEditor/Public/ConnectionDrawingPolicy.h
Include	#include "ConnectionDrawingPolicy.h"

Syntax

class FConnectionDrawingPolicy

Remarks

This class draws the connections for an UEdGraph composed of pins and nodes.

Variables

		Name	Description
	const FSlateBru...	ArrowImage
	int32	ArrowLayerID
	FVector2D	ArrowRadius
	const FSlateBru...	BubbleImage
	const FSlateRec...	ClippingRect
	FSlateWindowEle...	DrawElementsList
	float	HoverDeemphasisDarkFraction
	TSet< FEdGraphP...	HoveredPins
	double	LastHoverTimeEvent
	FVector2D	LocalMousePosition
	const FSlateBru...	MidpointImage
	FVector2D	MidpointRadius
	TMap< TSharedRe...	PinGeometries
	TMap< UEdGraphP...	PinToPinWidgetMap
	const UGraphEdi...	Settings
	FGraphSplineOve...	SplineOverlapResult
	int32	WireLayerID
	float	ZoomFactor

Constructors

	Name	Description
	FConnectionDrawingPolicy ( int32 InBackLayerID, int32 InFrontLayerID, float InZoomFactor, const FSlateRect& InClippingRect, FSlateWindowElementList& InDrawEle... )

Destructors

	Name	Description
	~FConnectionDrawingPolicy()

Functions

	Name	Description
void	ApplyHoverDeemphasis ( UEdGraphPin* OutputPin, UEdGraphPin* InputPin, float& Thickness, FLinearColor& WireColor )
void	BuildPinToPinWidgetMap ( TMap< TSharedRef< SWidget >, FArran... )	Helper function used by Draw(). Called before DrawPinGeometries to populate PinToPinWidgetMap.
FVector2D	ComputeSplineTangent ( const FVector2D& Start, const FVector2D& End )
void	DetermineLinkGeometry ( FArrangedChildren& ArrangedNodes, TSharedRef< SWidget >& OutputPinWi..., UEdGraphPin* OutputPin, UEdGraphPin* InputPin, FArrangedWidget& StartWidgetG..., FArrangedWidget& EndWidgetGeo... )
void	DetermineWiringStyle ( UEdGraphPin* OutputPin, UEdGraphPin* InputPin, FConnectionParams& Params )	Give specific editor modes a chance to highlight this connection or darken non-interesting connections.
void	Draw ( TMap< TSharedRef< SWidget >, FArran..., FArrangedChildren& ArrangedNodes )
void	DrawConnection ( int32 LayerId, const FVector2D& Start, const FVector2D& End, const FConnectionParams& Params )
void	DrawPinGeometries ( TMap< TSharedRef< SWidget >, FArran..., FArrangedChildren& ArrangedNodes )	Helper function used by Draw(). Iterates over the pin geometries, drawing connections between them.
void	DrawPreviewConnector ( const FGeometry& PinGeometry, const FVector2D& StartPoint, const FVector2D& EndPoint, UEdGraphPin* Pin )
void	DrawSplineWithArrow ( const FVector2D& StartPoint, const FVector2D& EndPoint, const FConnectionParams& Params )
void	DrawSplineWithArrow ( const FGeometry& StartGeom, const FGeometry& EndGeom, const FConnectionParams& Params )
bool	IsConnectionCulled ( const FArrangedWidget& StartLink, const FArrangedWidget& EndLink )
float	MakeSplineReparamTable ( const FVector2D& P0, const FVector2D& P0Tangent, const FVector2D& P1, const FVector2D& P1Tangent, FInterpCurve< float >& OutReparamT... )	Util to make a 'distance->alpha' table and also return spline length
void	ResetIncompatiblePinDrawState ( const TSet< TSharedRef< SWidget > >... )
void	SetHoveredPins ( const TSet< FEdGraphPinReference > ..., const TArray< TSharedPtr< SGraphPin..., double HoverTime )	Update the drawing policy with the set of hovered pins (which can be empty)
void	SetIncompatiblePinDrawState ( const TSharedPtr< SGraphPin >& Sta..., const TSet< TSharedRef< SWidget > >... )
void	SetMarkedPin ( TWeakPtr< SGraphPin > InMarkedPin )	Update the drawing policy with the marked pin (which may not be valid)
void	SetMousePosition ( const FVector2D& InMousePos )