FSceneViewProjectionData Struct Reference

#include <SceneView.h>

Inheritance diagram for FSceneViewProjectionData:

Public Member Functions
void	SetViewRectangle (const FIntRect &InViewRect)
void	SetConstrainedViewRectangle (const FIntRect &InViewRect)
bool	IsValidViewRectangle () const
bool	IsPerspectiveProjection () const
const FIntRect &	GetViewRect () const
const FIntRect &	GetConstrainedViewRect () const
FMatrix	ComputeViewProjectionMatrix () const
float	GetNearPlaneFromProjectionMatrix () const
bool	UpdateOrthoPlanes (float &NearPlane, float &FarPlane, float HalfOrthoWidth, bool bUseCameraHeightAsViewTarget)
ENGINE_API bool	UpdateOrthoPlanes (FMinimalViewInfo &MinimalViewInfo)
ENGINE_API bool	UpdateOrthoPlanes (bool bUseCameraHeightAsViewTarget)

Static Public Member Functions
static float	GetNearPlaneFromProjectionMatrix (const FMatrix &ProjectionMatrix)
static ENGINE_API bool	UpdateOrthoPlanes (FSceneViewProjectionData *InOutProjectionData, float &NearPlane, float &FarPlane, float HalfOrthoWidth, bool bUseCameraHeightAsViewTarget)

Public Attributes
FVector	ViewOrigin = FVector::ZeroVector
FMatrix	ViewRotationMatrix = FMatrix::Identity
FMatrix	ProjectionMatrix = FMatrix::Identity
FIntRect	ViewRect = FIntRect(0,0,0,0)
FVector	CameraToViewTarget = FVector::ZeroVector

Protected Attributes
FIntRect	ConstrainedViewRect = FIntRect(0,0,0,0)

Member Function Documentation

ComputeViewProjectionMatrix()

FMatrix FSceneViewProjectionData::ComputeViewProjectionMatrix ( ) const

inline

GetConstrainedViewRect()

const FIntRect & FSceneViewProjectionData::GetConstrainedViewRect ( ) const

inline

GetNearPlaneFromProjectionMatrix() [1/2]

float FSceneViewProjectionData::GetNearPlaneFromProjectionMatrix ( ) const

inline

GetNearPlaneFromProjectionMatrix() [2/2]

static float FSceneViewProjectionData::GetNearPlaneFromProjectionMatrix ( const FMatrix &  ProjectionMatrix )

inlinestatic

GetViewRect()

const FIntRect & FSceneViewProjectionData::GetViewRect ( ) const

inline

IsPerspectiveProjection()

bool FSceneViewProjectionData::IsPerspectiveProjection ( ) const

inline

IsValidViewRectangle()

bool FSceneViewProjectionData::IsValidViewRectangle ( ) const

inline

SetConstrainedViewRectangle()

void FSceneViewProjectionData::SetConstrainedViewRectangle ( const FIntRect &  InViewRect )

inline

SetViewRectangle()

void FSceneViewProjectionData::SetViewRectangle ( const FIntRect &  InViewRect )

inline

UpdateOrthoPlanes() [1/4]

bool FSceneViewProjectionData::UpdateOrthoPlanes

(

bool

bUseCameraHeightAsViewTarget

)

This function takes the existing projection matrix and moves the nearplane + view origin. Separating this step from the near plane calculation logic itself helps avoid applying the NearPlane correctiontwice /makes it easier to read.

UpdateOrthoPlanes() [2/4]

bool FSceneViewProjectionData::UpdateOrthoPlanes ( float &  NearPlane, float &  FarPlane, float  HalfOrthoWidth, bool  bUseCameraHeightAsViewTarget  )

inline

UpdateOrthoPlanes() [3/4]

bool FSceneViewProjectionData::UpdateOrthoPlanes

(

FMinimalViewInfo &

MinimalViewInfo

)

UpdateOrthoPlanes() [4/4]

bool FSceneViewProjectionData::UpdateOrthoPlanes ( FSceneViewProjectionData *  InOutProjectionData, float &  NearPlane, float &  FarPlane, float  HalfOrthoWidth, bool  bUseCameraHeightAsViewTarget  )

static

Use the height of the camera as a sort of pseudo CameraToViewTarget to remove camera position as much as possible so we minimise the near clip plane distance. Depends on view direction being top down as when we get to a side view, the scale grows much larger and it becomes redundant.

Member Data Documentation

CameraToViewTarget

FVector FSceneViewProjectionData::CameraToViewTarget = FVector::ZeroVector

ConstrainedViewRect

FIntRect FSceneViewProjectionData::ConstrainedViewRect = FIntRect(0,0,0,0)

protected

ProjectionMatrix

FMatrix FSceneViewProjectionData::ProjectionMatrix = FMatrix::Identity

UE projection matrix projects such that clip space Z=1 is the near plane, and Z=0 is the infinite far plane.

ViewOrigin

FVector FSceneViewProjectionData::ViewOrigin = FVector::ZeroVector

The view origin.

ViewRect

FIntRect FSceneViewProjectionData::ViewRect = FIntRect(0,0,0,0)

ViewRotationMatrix

FMatrix FSceneViewProjectionData::ViewRotationMatrix = FMatrix::Identity

Rotation matrix transforming from world space to view space.

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The documentation for this struct was generated from the following files:

• Engine/Source/Runtime/Engine/Public/SceneView.h
• Engine/Source/Runtime/Engine/Private/SceneView.cpp