Engine.ParticleSystem

Extends

Object

Modifiers

native ( Particle ) hidecategories ( Object )

Copyright 1998-2011 Epic Games, Inc. All Rights Reserved.

Core.Object
|   
+-- Engine.ParticleSystem

Functions Summary
	ParticleSystemLODMethod	GetCurrentLODMethod ()
	float	GetLODDistance (int LODLevelIndex)
	int	GetLODLevelCount ()
		SetCurrentLODMethod (ParticleSystemLODMethod InMethod)
	bool	SetLODDistance (int LODLevelIndex, float InDistance)

BackgroundColor Source code

The background color to display in Cascade

bHasPhysics Source code

Set during load time to indicate that physics is used...

bLit Source code

Deprecated, ParticleSystemLOD::bLit is used instead.

bRegenerateLODDuplicate Source code

Internal value that tracks the regenerate LOD levels preference. If TRUE, when autoregenerating LOD levels in code, the low level will be a duplicate of the high.

bShouldResetPeakCounts Source code

EDITOR ONLY: Indicates that Cascade would like to have the PeakActiveParticles count reset

CurveEdSetup Source code

Used for curve editor to remember curve-editing setup.

EditorLODSetting Source code

LOD setting for intepolation (set by Cascade) Range [0..100]

Emitters Source code

Emitters - internal - the array of emitters in the system

FloorMesh Source code

FloorPosition Source code

FloorRotation Source code

FloorScale Source code

FloorScale3D Source code

PreviewComponent Source code

The component used to preview the particle system in Cascade

SoloTracking Source code

ThumbnailAngle Source code

The angle to use when rendering the thumbnail image

ThumbnailDistance Source code

The distance to place the system when rendering the thumbnail image

ThumbnailImage Source code

Internal: The PSys thumbnail image

ThumbnailImageOutOfDate Source code

Internal: Indicates the PSys thumbnail image is out of date

UpdateTime_Delta Source code

UpdateTime_Delta - internal

Bounds

bUseFixedRelativeBoundingBox Source code

Whether to use the fixed relative bounding box or calculate it every frame.

FixedRelativeBoundingBox Source code

Fixed relative bounding box for particle system.

Delay

bUseDelayRange Source code

If TRUE, select the emitter delay from the range [DelayLow..Delay]

Delay Source code

How long this Particle system should delay when ActivateSystem is called on it.

DelayLow Source code

The low end of the emitter delay if using a range.

LOD

LODDistanceCheckTime Source code

How often (in seconds) the system should perform the LOD distance check.

LODDistances Source code

The array of distances for each LOD level in the system. Used when LODMethod is set to PARTICLESYSTEMLODMETHOD_Automatic. Example: System with 3 LOD levels LODDistances(0) = 0.0 LODDistances(1) = 2500.0 LODDistances(2) = 5000.0 In this case, when the system is [ 0.0 .. 2499.9] from the camera, LOD level 0 will be used. [2500.0 .. 4999.9] from the camera, LOD level 1 will be used. [5000.0 .. INFINITY] from the camera, LOD level 2 will be used.

LODMethod Source code

The method of LOD level determination to utilize for this particle system PARTICLESYSTEMLODMETHOD_Automatic - Automatically set the LOD level, checking every LODDistanceCheckTime seconds. PARTICLESYSTEMLODMETHOD_DirectSet - LOD level is directly set by the game code. PARTICLESYSTEMLODMETHOD_ActivateAutomatic - LOD level is determined at Activation time, then left alone unless directly set by game code.

LODSettings Source code

MacroUV

MacroUVPosition Source code

Local space position that UVs generated with the ParticleMacroUV material node will be centered on.

MacroUVRadius Source code

World space radius that UVs generated with the ParticleMacroUV material node will tile based on.

Mobile

bUseMobilePointSprites Source code

For mobile only, whether to use point sprite rendering to speed up particle rendering

Occlusion

CustomOcclusionBounds Source code

The occlusion bounds to use if OcclusionBoundsMethod is set to EPSOBM_CustomBounds

OcclusionBoundsMethod Source code

Which occlusion bounds method to use for this particle system. EPSOBM_None - Don't determine occlusion for this system. EPSOBM_ParticleBounds - Use the bounds of the component when determining occlusion.

ParticleSystem

bOrientZAxisTowardCamera Source code

If true, the system's Z axis will be oriented toward the camera

bSkipSpawnCountCheck Source code

When TRUE, do NOT perform the spawning limiter check. Intended for effects used in pre-rendered cinematics.

SecondsBeforeInactive Source code

Number of seconds of emitter not being rendered that need to pass before it no longer gets ticked/ becomes inactive.

SystemUpdateMode Source code

FixedTime - update via a fixed time step

UpdateTime_FPS Source code

UpdateTime_FPS - the frame per second to update at in FixedTime mode

WarmupTime Source code

WarmupTime - the time to warm-up the particle system when first rendered

Thumbnail

bUseRealtimeThumbnail Source code

Inidicates the old 'real-time' thumbnail rendering should be used

ThumbnailWarmup Source code

The time to warm-up the system for the thumbnail image

EParticleSystemOcclusionBoundsMethod Source code

Occlusion method enumeration

EParticleSystemUpdateMode Source code

ParticleSystemUpdateMode Enumeration indicating the method by which the system should be updated

ParticleSystemLODMethod Source code

ParticleSystemLODMethod

LODSoloTrack Source code

Temporary array for tracking 'solo' emitter mode. Entry will be true if emitter was enabled

ParticleSystemLOD Source code

Structure containing per-LOD settings that pertain to the entire UParticleSystem.
bLit:

Boolean to indicate whether the particle system accepts lights or not. This must not be changed in-game, it can only be changed safely in the editor through Cascade.

GetCurrentLODMethod Source code

Return the currently set LOD method

GetLODDistance Source code

Return the distance for the given LOD level

GetLODLevelCount Source code

Return the number of LOD levels for this particle system

SetCurrentLODMethod Source code

Set the LOD method

SetLODDistance Source code

Set the distance for the given LOD index

defaultproperties
{
	

	ThumbnailDistance=200.0
	ThumbnailWarmup=1.0

	UpdateTime_FPS=60.0
	UpdateTime_Delta=1.0/60.0
	WarmupTime=0.0

	bLit=true

	EditorLODSetting=0
	FixedRelativeBoundingBox=(Min=(X=-1,Y=-1,Z=-1),Max=(X=1,Y=1,Z=1))

	LODMethod=PARTICLESYSTEMLODMETHOD_Automatic
	LODDistanceCheckTime=0.25

	bRegenerateLODDuplicate=false
	ThumbnailImageOutOfDate=true

	FloorMesh="EditorMeshes.AnimTreeEd_PreviewFloor"
	FloorPosition=(X=0.000000,Y=0.000000,Z=0.000000)
	FloorRotation=(Pitch=0,Yaw=0,Roll=0)
	FloorScale=1.000000
	FloorScale3D=(X=1.000000,Y=1.000000,Z=1.000000)

	MacroUVPosition=(X=0.000000,Y=0.000000,Z=0.000000)
	MacroUVRadius=200 
}