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API > API/Runtime > API/Runtime/Chaos > API/Runtime/Chaos/FPBDCollisionConstraint
Description
Find the material for this contact and collect the friction, restitution, etc. This data is cached in the contact, so ClearMaterialProperties must be called if the material changes to force a re-gather of the data.
| Name | UpdateMaterialProperties |
| Type | function |
| Header File | /Engine/Source/Runtime/Experimental/Chaos/Public/Chaos/Collision/PBDCollisionConstraint.h |
| Include Path | #include "Chaos/Collision/PBDCollisionConstraint.h" |
void UpdateMaterialProperties()