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  3. FParticleRibbonEmitterInstance

FParticleRibbonEmitterInstance

Unreal Engine C++ API Reference > Runtime > Engine

Inheritance Hierarchy

References

   
Module Engine
Header /Engine/Source/Runtime/Engine/Public/ParticleEmitterInstances.h
Include #include "ParticleEmitterInstances.h"

Syntax

struct FParticleRibbonEmitterInstance : public FParticleTrailsEmitterInstance_Base

Variables

  Type Name Description
Public variable TArray< float > CurrentLifetimes The lifetime to use for each ribbon
Public variable TArray< float > CurrentSizes The size to use for each ribbon
Public variable TArray< FVector > CurrentSourcePosition The current source position for each trail in this emitter
Public variable TArray< FQuat > CurrentSourceRotation The current source rotation for each trail in this emitter
Public variable TArray< FVector > CurrentSourceTangent The current source tangent for each trail in this emitter
Public variable TArray< float > CurrentSourceTangentStrength The current source tangent strength for each trail in this emitter
Public variable TArray< FVector > CurrentSourceUp The current source up for each trail in this emitter
Public variable int32 HeadOnlyParticles TArray CurrentStartIndices;.
Public variable int32 LastSelectedParticleIndex The last selected source index (for sequential selection)
Public variable TArray< FVector > LastSourcePosition The previous source position for each trail in this emitter
Public variable TArray< FQuat > LastSourceRotation The last source rotation for each trail in this emitter
Public variable TArray< FVector > LastSourceTangent The previous source tangent for each trail in this emitter
Public variable TArray< float > LastSourceTangentStrength The previous source tangent strength for each trail in this emitter
Public variable TArray< float > LastSourceTimes The time of the last partice source update
Public variable TArray< FVector > LastSourceUp The previous source up for each trail in this emitter
Public variable AActor * SourceActor If the source is an actor, this is it
Public variable FParticleEmitterInstance * SourceEmitter If the source is an emitter, this is it
Public variable TArray< int32 > SourceIndices The indices for the source of each trail (if required)
Public variable UParticleModuleTrailSource * SourceModule Source module
Public variable TArray< FVector > SourceOffsets The offset from the source for each trail in this emitter
Public variable TArray< float > SourceTimes The time of the last partice source update
Public variable UParticleModuleSpawnPerUnit * SpawnPerUnitModule SpawnPerUnit module (hijacking it for trails here)
Public variable int32 TrailModule_Source_Offset Payload offset for source module
Public variable UParticleModuleTypeDataRibbon * TrailTypeData The TypeData module for this trail emitter

Constructors

  Type Name Description
Public function   Constructor

Destructors

  Type Name Description
Public function Virtual   Destructor

Functions

  Type Name Description
Public function void Determine the number of vertices and triangles in each trail
Public function void

GetParticleLifetimeAndSize ( int32 InTrailIdx,
const FBaseParticle* InParticle,
bool bInNoLivingParticles,
float& OutOneOverMaxLifetime,
float& OutSize
)

 Get the lifetime and size for a particle being added to the given trail
Public function Virtual bool

GetSpawnPerUnitAmount ( float DeltaTime,
int32 InTrailIdx,
int32& OutCount,
float& OutRate
)

  
Public function void  
Public function bool

ResolveSourcePoint ( int32 InTrailIdx,
FVector& OutPosition,
FQuat& OutRotation,
FVector& OutUp,
FVector& OutTangent,
float& OutTangentStrength
)

 Virtual void UpdateStartParticles(float DeltaTime, bool bFirstTime);
Public function float

Spawn_RateAndBurst ( float DeltaTime
)

 Spawn ribbon particles from SpawnRate and Burst settings.
Public function bool

Spawn_Source ( float DeltaTime
)

 Spawn source-based ribbon particles.

Overridden from FParticleTrailsEmitterInstance_Base

  Type Name Description
Public function Virtual void  
Public function Virtual void

Tick_RecalculateTangents ( float DeltaTime,
UParticleLODLevel* CurrentLODLevel
)

 Tick sub-function that handles recalculation of tangents
Public function Virtual void

UpdateSourceData ( float DeltaTime,
bool bFirstTime
)

  

Overridden from FParticleEmitterInstance

  Type Name Description
Public function Virtual void

ApplyWorldOffset ( FVector InOffset,
bool bWorldShift
)

 Called on world origin changes
Protected function Virtual bool Captures dynamic replay data for this particle system.
Public function Virtual void

GetAllocatedSize ( int32& OutNum,
int32& OutMax
)

 Retrieve the allocated size of this instance.
Public function Virtual FDynamicEmitterDataBase *

GetDynamicData ( bool bSelected,
ERHIFeatureLevel::Type InFeatureLevel
)

 Retrieves the dynamic data for the emitter
Public function Virtual FDynamicEmitterReplayDataBase * Retrieves replay data for the emitter
Public function Virtual void

GetResourceSizeEx ( FResourceSizeEx& CumulativeResourceSize
)

 Returns the size of the object/ resource for display to artists/ LDs in the Editor.
Public function Virtual void  
Public function Virtual bool Checks some common values for GetDynamicData validity
Public function Virtual void When an emitter is killed, this will check other emitters and clean up anything pointing to this one
Public function Virtual float

Spawn ( float DeltaTime
)

 Spawn particles for this emitter instance

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