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> Unreal Engine API Reference > Runtime > Chaos > GeometryCollection > FRecordedFrame > PreviousTransformIndices

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PreviousTransformIndices

Maps to the position in the Transforms array of the _previous_ frame that this entry existed.

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Syntax

TArray< int32 > PreviousTransformIndices

Remarks

Maps to the position in the Transforms array of the previous frame that this entry existed. They can move around as particles either become disabled/enabled or if a particle didn't move since the last frame. This allows us to pick up previous positions for velocities etc.

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