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> Unreal Engine API Reference > Runtime > Chaos > Chaos > TPBDRigidClustering > TPBDRigidClustering::GetClusterGroupIndexArray

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TPBDRigidClustering::GetClusterGroupIndexArray

GetClusterGroupIndexArray The group index is used to automatically bind disjoint clusters.

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References

Module	Chaos
Header	/Engine/Source/Runtime/Experimental/Chaos/Public/Chaos/PBDRigidClustering.h
Include	#include "Chaos/PBDRigidClustering.h"

Syntax

TArrayCollectionArray< int32 > & GetClusterGroupIndexArray()

Remarks

GetClusterGroupIndexArray The group index is used to automatically bind disjoint clusters. This attribute it set during the creation of cluster to a positive integer value. During UnionClusterGroups (which is called during AdvanceClustering) the positive bodies are joined with a negative pre-existing body, then set negative. Zero entries are ignored within the union.

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