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  3. FAllocator2D

FAllocator2D

API > API/Runtime > API/Runtime/MeshUtilitiesCommon

References

   
Module MeshUtilitiesCommon
Header /Engine/Source/Runtime/MeshUtilitiesCommon/Public/Allocator2D.h
Include #include "Allocator2D.h"

Syntax

class FAllocator2D

Variables

  Type Name Description
Protected variable TArray< uint64 > Bits  
Protected variable TArray< FRun > Columns  
Protected variable const uint32 Height  
Protected variable const ELightmapUVVersion LayoutVersion  
Protected variable const EMode Mode Enforce that those cannot be changed in flight.
Protected variable const uint32 Pitch  
Protected variable uint32 RasterHeight  
Protected variable uint32 RasterWidth  
Protected variable TArray< FRun > Rows  
Protected variable TArray< uint16 > SortedColumnsIndex Index inside columns that will be sorted by columns with longest used segment first.
Protected variable TArray< uint16 > SortedRowsIndex Index inside rows that will be sorted by rows with longest used segment first.
Protected variable const uint32 Width  

Constructors

  Type Name Description
Public function  

FAllocator2D ( const FAllocator2D& Other
)

 Take control of the copy assignment to reduce the amount of data movement to the strict minimum.
Public function  

FAllocator2D ( EMode Mode,
uint32 Width,
uint32 Height,
ELightmapUVVersion LayoutVersion
)

  

Functions

  Type Name Description
Protected function void

AddUsedSegment ( FRun& Run,
uint32 StartPos,
uint32 Length
)

  
Public function void

Alloc ( FRect Rect,
const FAllocator2D& Other
)

  
Public function void

Alloc ( FRect Rect
)

  
Public function void

Clear ()

 Must clear before using.
Public function void

ClearBit ( uint32 x,
uint32 y
)

  
Public function void

CopyRuns ( TArray< FRun >& Runs,
const TArray< FRun >& OtherRuns,
int32 MaxSize
)

  
Public function void  
Public function bool

Find ( FRect& Rect
)

  
Public function bool

FindBitByBit ( FRect& Rect,
const FAllocator2D& Other
)

  
Public function Const bool

FindWithSegments ( FRect& Rect,
const FAllocator2D& Other,
TFunctionRef< bool(const FAllocator2D::FRect&)> IsBestRect
)

  
Public function void

FlipX ( const FRect& Rect
)

  
Public function void

FlipY ( const FRect& Rect
)

  
Public function Const uint64

GetBit ( uint32 x,
uint32 y
)

 Returns non-zero if set.
Public function Const uint32  
Public function Const FMD5Hash Get the MD5 hash of the rasterized content.
Public function Const uint32  
Public function Const uint32  
Protected function void

InitRuns ( TArray< FRun >& Runs,
uint32 PrimaryResolution,
uint32 PerpendicularRasterSize
)

  
Protected function void  
Public function void

MergeRun ( FRun& Run,
const FRun& OtherRun,
uint32 RectOffset,
uint32 RectLength,
uint32 PrimaryResolution,
uint32 PerpendicularResolution
)

  
Public function void

MergeSegments ( const FRect& Rect,
const FAllocator2D& Other
)

  
Public function void
PublishStats

( int32 ChartIndex,
int32 Orientation,
bool bFound,
const FRect& Rect,
const FRect& BestRect,
const FMD5Hash& ChartMD5,
TFunctionRef< bool(const FAllocator2D::FRect&)> IsBestRect
)

  
Public function void  
Public function void

SetBit ( uint32 x,
uint32 y
)

  
Public function bool

Test ( FRect Rect
)

  
Public function bool

Test ( FRect Rect,
const FAllocator2D& Other
)

  
Protected function Const bool

TestAllColumns ( const FRect& Rect,
const FAllocator2D& Other,
uint32& FailedLength
)

  
Protected function Const bool

TestAllRows ( const FRect& Rect,
const FAllocator2D& Other,
uint32& FailedLength
)

  
Protected function Const bool

TestOneRun ( const FRun& Run,
const FRun& OtherRun,
uint32 RectOffset,
uint32 RectLength,
uint32 PrimaryResolution,
uint32& OutFailedLength
)

  
Public function Const FString Allow to visualize the content in ascii for debugging purpose. (i.e Watch or Immediate window).

Operators

  Type Name Description
Public function FAllocator2D &

operator= ( const FAllocator2D& Other
)

  

Classes

  Type Name Description
Public struct FRect    
Public struct FRun    
Public struct FSegment    

Enums

  Type Name Description
Public enum EMode    

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