UStackerBase

Abstract base for stackers that hold a ring buffer of points and expose stacked point/space.

Subclasses (e.g. UDictStacker, UBoxStacker) implement GetStacked and GetStackedSpace for their concrete types.

class UStackerBase : public UObject

Methods

virtual void Push(const FInstancedStruct &InPoint,
                  FInstancedStruct &OutStackedPoint)

Pushes a point into the ring buffer (overwrites oldest when full).

void Reset()

Resets the ring buffer; next push will start at index 0 again.

inline int32 GetNumValid() const

inline virtual void GetStacked(FInstancedStruct &OutStackedPoint)

Fills the output with the current stacked point.

inline virtual void GetStackedSpace(FInstancedStruct &OutSpace) const

Fills the output with the stacked space.

void PopulateBufferWithDefaults()

Fills unused slots in Buffer with DefaultPoint after resize or reset.

virtual void ValidateDefaultPointAndSpace()

Ensures DefaultPoint and UnstackedSpace are compatible for this stacker; assert or log on failure.

TInstancedStruct<FSpace> UnstackedSpace

The unstacked space that will be stacked.

int32 StackSize = 4

Number of frames to keep in the ring buffer (stack size).

TInstancedStruct<FPoint> DefaultPoint

The default point to represent empty slots in the stacked observation.

TRingBuffer<TInstancedStruct<FPoint>> Buffer

Ring buffer of the last StackSize points (newest at logical push position).

int32 NumValid_ = 0

Number of real (pushed) entries in the buffer; remaining slots are DefaultPoint.

Source: Source/Schola/Public/Adapters/StackerBase.h