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API > API/Runtime > API/Runtime/Chaos > API/Runtime/Chaos/GeometryCollection > API/Runtime/Chaos/GeometryCollection/FRecordedFrame
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.