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  3. TSparseGrid3

TSparseGrid3

Dynamic sparse 3D grid.

API > API/Runtime > API/Runtime/GeometryCore > API/Runtime/GeometryCore/Spatial

References

   
Module GeometryCore
Header /Engine/Source/Runtime/GeometryCore/Public/Spatial/SparseGrid3.h
Include #include "Spatial/SparseGrid3.h"

Syntax

template<typename ElemType>  
class TSparseGrid3

Remarks

Dynamic sparse 3D grid. Useful in cases where we have grid of some type of non-trivial object and we don't want to pre-allocate full grid of them. So we allocate on-demand. This can be used to implement multi-grid schemes, eg for example the ElemType could be sub-grid of fixed dimension.

Variables

  Type Name Description
Protected variable FAxisAlignedBox3i Bounds Accumulated bounds of all indices inserted into Elements. Not currently used internally.
Protected variable TMap< FVector3i, ElemType * > Elements Sparse grid of allocated elements

Constructors

  Type Name Description
Public function   Create empty grid
Public function  

TSparseGrid3 ( const TSparseGrid3& Other
)

  
Public function    

Destructors

  Type Name Description
Public function   Deletes all grid elements

Functions

  Type Name Description
Protected function ElemType *

Allocate ( const FVector3i& index
)

  
Public function Const void

AllocatedIteration ( Func ElementFunc
)

 Iterate over existing elements and apply ElementFunc(ElementType) to each of them
Public function bool

Free ( const FVector3i& Index
)

 Delete an element in the grid
Public function void

FreeAll ()

 Delete all elements in the grid
Public function ElemType *

Get ( const FVector3i& Index,
bool bAllocateIfMissing
)

 Get the grid element at this index, and optionally allocate it if it doesn't exist
Public function Const const ElemType *

Get ( const FVector3i& Index
)

 Get the grid element at this index
Public function Const FAxisAlignedBox3i  
Public function Const int  
Public function Const float  
Public function Const FVector3i  
Public function Const bool

Has ( const FVector3i& Index
)

  
Public function Const void

RangeIteration ( FVector3i MinIndex,
FVector3i MaxIndex,
Func ElementFunc
)

 Iterate over existing allocated elements within the integer bounds defined by Min and Max (inclusive), and apply ElementFunc(ElementType) to each of them

Operators

  Type Name Description
Public function TSparseGrid3 &

operator= ( const TSparseGrid3& Other
)

  
Public function TSparseGrid3 &

operator= ( TSparseGrid3&& Other
)

  

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