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API > API/Runtime > API/Runtime/Chaos > API/Runtime/Chaos/FPBDEvolution
Description
Add collision particles and initialize group ids. Return the index of the first added particle. Use INDEX_NONE as GroupId for collision particles that affect all particle groups.
| Name | AddCollisionParticleRange |
| Type | function |
| Header File | /Engine/Source/Runtime/Experimental/Chaos/Public/Chaos/PBDEvolution.h |
| Include Path | #include "Chaos/PBDEvolution.h" |
| Source | /Engine/Source/Runtime/Experimental/Chaos/Private/Chaos/PBDEvolution.cpp |
int32 AddCollisionParticleRange
(
int32 NumParticles,
uint32 GroupId,
bool bActivate
)