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API > API/Runtime > API/Runtime/Engine > API/Runtime/Engine/FParticleRibbonEmitterInstance
Description
Update the start particles of the trail, if needed
Resolve the source point for the given trail index.
| Name | ResolveSourcePoint |
| Type | function |
| Header File | /Engine/Source/Runtime/Engine/Public/ParticleEmitterInstances.h |
| Include Path | #include "ParticleEmitterInstances.h" |
| Source | /Engine/Source/Runtime/Engine/Private/Particles/ParticleTrail2EmitterInstance.cpp |
bool ResolveSourcePoint
(
int32 InTrailIdx,
FVector & OutPosition,
FQuat & OutRotation,
FVector & OutUp,
FVector & OutTangent,
float & OutTangentStrength
)
bool true if successful, false if not
Parameters
| Name | Remarks |
|---|---|
| InTrailIdx | The index of the trail to resolve |
| OutPosition | The position of the source |
| OutRotation | The rotation of the source |
| OutUp | The 'up' of the source (if required) |
| OutTangent | The tangent of the source |
| OutTangentStrength | The strength of the tangent of the source |