SubUVAnimation.cpp File Reference

#include "Particles/SubUVAnimation.h"
#include "Containers/ClosableMpscQueue.h"
#include "Engine/Texture2D.h"
#include "Experimental/Containers/HazardPointer.h"
#include "Math/RandomStream.h"
#include "Math/ConvexHull2d.h"
#include "ParticleHelper.h"
#include "Particles/ParticleSystemComponent.h"
#include "DerivedDataCacheInterface.h"
#include "DerivedDataCacheKey.h"
#include "ComponentReregisterContext.h"
#include "RHI.h"
#include "RHIResourceUtils.h"

Classes
struct	FLine2D
struct	FSubUVFrameData

Macros
#define	LOCTEXT_NAMESPACE   "FSubUVDerivedData"

Functions
float	CrossProduct2D (FVector2D Direction0, FVector2D Direction1)
bool	ComputePointIntersectionBetweenLines2D (const FLine2D &Line0, const FLine2D &Line1, FVector2D &OutIntersectPoint)
bool	IsValidUV (FVector2D InUV)
int32	GetRandomLineIndex (int32 StartIndex, int32 NumLines, FRandomStream &RandomStream)
void	FindOptimalPolygon (int32 TargetVertexCount, const TArray< int32 > &ConvexHullIndices, const TArray< FVector2D > &PotentialHullVertices, TArray< FVector2D > &OutBoundingVertices)
bool	IsSupportedFormat (ETextureSourceFormat SrcFormat)
uint32	GetByteSizePerPixel (ETextureSourceFormat SrcFormat)
bool	ComputeOpacityValue (const uint8 *BGRA, int32 x, int32 y, int32 TextureSizeX, EOpacitySourceMode OpacitySourceMode, ETextureSourceFormat SrcFormat, float AlphaThresholdF, uint8 AlphaThreshold8, uint16 AlphaThreshold16)
int32	ComputeNeighborCount (int32 X, int32 Y, int32 GlobalX, int32 GlobalY, int32 SubImageSizeX, int32 SubImageSizeY, int32 TextureSizeX, const TArray64< uint8 > &MipData, EOpacitySourceMode OpacitySourceMode, ETextureSourceFormat SourceFormat, float AlphaThresholdF, uint8 AlphaThreshold8, uint16 AlphaThreshold16)

Variables
FIntPoint	GNeighbors []

Macro Definition Documentation

LOCTEXT_NAMESPACE

#define LOCTEXT_NAMESPACE   "FSubUVDerivedData"

Function Documentation

ComputeNeighborCount()

int32 ComputeNeighborCount	(	int32	X,
		int32	Y,
		int32	GlobalX,
		int32	GlobalY,
		int32	SubImageSizeX,
		int32	SubImageSizeY,
		int32	TextureSizeX,
		const TArray64< uint8 > &	MipData,
		EOpacitySourceMode	OpacitySourceMode,
		ETextureSourceFormat	SourceFormat,
		float	AlphaThresholdF,
		uint8	AlphaThreshold8,
		uint16	AlphaThreshold16
	)

Counts how many neighbors have non-zero alpha.

ComputeOpacityValue()

bool ComputeOpacityValue	(	const uint8 *	BGRA,
		int32	x,
		int32	y,
		int32	TextureSizeX,
		EOpacitySourceMode	OpacitySourceMode,
		ETextureSourceFormat	SrcFormat,
		float	AlphaThresholdF,
		uint8	AlphaThreshold8,
		uint16	AlphaThreshold16
	)

ComputePointIntersectionBetweenLines2D()

bool ComputePointIntersectionBetweenLines2D	(	const FLine2D &	Line0,
		const FLine2D &	Line1,
		FVector2D &	OutIntersectPoint
	)

CrossProduct2D()

KISMET_MATH_INLINE double UKismetMathLibrary::CrossProduct2D ( FVector2D  Direction0, FVector2D  Direction1  )

inline

FindOptimalPolygon()

void FindOptimalPolygon	(	int32	TargetVertexCount,
		const TArray< int32 > &	ConvexHullIndices,
		const TArray< FVector2D > &	PotentialHullVertices,
		TArray< FVector2D > &	OutBoundingVertices
	)

GetByteSizePerPixel()

uint32 GetByteSizePerPixel

(

ETextureSourceFormat

SrcFormat

)

GetRandomLineIndex()

int32 GetRandomLineIndex	(	int32	StartIndex,
		int32	NumLines,
		FRandomStream &	RandomStream
	)

IsSupportedFormat()

bool IsSupportedFormat

(

ETextureSourceFormat

SrcFormat

)

IsValidUV()

bool IsValidUV

(

FVector2D

InUV

)

Variable Documentation

GNeighbors

FIntPoint GNeighbors[]

Initial value:

= 
{
    FIntPoint(-1, -1),
    FIntPoint(0, -1),
    FIntPoint(1, -1),
    FIntPoint(1, 0),
    FIntPoint(1, 1),
    FIntPoint(0, 1),
    FIntPoint(-1, 1),
    FIntPoint(-1, 0)
}