UTextureProcessComponentBase Class Reference

Inheritance diagram for UTextureProcessComponentBase:

Collaboration diagram for UTextureProcessComponentBase:

Public Attributes
int	destinationWidth
int	destinationHeight

Protected Member Functions
virtual void	BeginPlay () override
void	calcAspectRatio (UTexture *inputTexture, FVector2D &uvScalingFactor)
UTextureRenderTarget2D *	resize (UTexture *inputTexture, FVector2D &uvScalingFactor, const bool doFlipImage=false, const ETextureProcessImageRotation doRotateImage=ETextureProcessImageRotation::None)
UTextureRenderTarget2D *	renderAffineTransformedFrame (UTexture *inputTexture, const FAffineMat2D &inverseNormalizedAffineMat, const bool doFlipImage, const ETextureProcessImageRotation doRotateImage)

Protected Attributes
UMaterialInstanceDynamic *	materialAffineWarp_external
UMaterialInstanceDynamic *	materialAffineWarp_color
UTextureRenderTarget2D *	renderTargetAffineWarp
ETextureRenderTargetFormat	renderTargetFormat = ETextureRenderTargetFormat::RTF_RGBA8_SRGB

Detailed Description

Base class for the compnents to precess UTexture

Member Function Documentation

calcAspectRatio()

void UTextureProcessComponentBase::calcAspectRatio ( UTexture *  inputTexture, FVector2D &  uvScalingFactor  )

protected

Calculate the aspect ratio of the image.

Parameters

inputTexture	Input image
uvScalingFactor	The scaling factor of the UV of the image to keep the aspect ratio of the image. X = 1 and Y > 1 for a landscape image. X > 1 and Y = 1 for a portrait image.

renderAffineTransformedFrame()

UTextureRenderTarget2D * UTextureProcessComponentBase::renderAffineTransformedFrame ( UTexture *  inputTexture, const FAffineMat2D &  inverseNormalizedAffineMat, const bool  doFlipImage, const ETextureProcessImageRotation  doRotateImage  )

protected

Execute the affine transform, implemented by BP

Parameters

inputTexture	Original image
inverseNormalizedAffineMat	The matrix of inverse of the affine transform. The scales of original and destination images must be normalized to (1, 1).
doFlipImage	Whether to flip the image during resizing.
doRotateImage	Whether to rotate the image during resizing.

Returns

The image after affine transform

resize()

UTextureRenderTarget2D * UTextureProcessComponentBase::resize ( UTexture *  inputTexture, FVector2D &  uvScalingFactor, const bool  doFlipImage = false, const ETextureProcessImageRotation  doRotateImage = ETextureProcessImageRotation::None  )

protected

Resize the image to (destinationHeight x destinationWidth) while maintaining the aspect ratio.

Parameters

inputTexture	Original image
uvScalingFactor	The scaling factor of the UV of the image to keep the aspect ratio of the image. X = 1 and Y > 1 for a landscape image. X > 1 and Y = 1 for a portrait image.
doFlipImage	Whether to flip the image during resizing.
doRotateImage	Whether to rotate the image during resizing.

Member Data Documentation

destinationHeight

int UTextureProcessComponentBase::destinationHeight

The height of the image after processing

destinationWidth

int UTextureProcessComponentBase::destinationWidth

The width of the image after processing