com.threerings.opengl.effect
Class BaseParticleSystem.Layer

java.lang.Object
  com.threerings.expr.SimpleScope
      com.threerings.opengl.effect.BaseParticleSystem.Layer

All Implemented Interfaces:

Scope, ScopeUpdateListener

Direct Known Subclasses:

MetaParticleSystem.Layer, ParticleSystem.Layer

Enclosing class:

BaseParticleSystem

public abstract static class BaseParticleSystem.Layer
extends SimpleScope

A single layer of the system.

Field Summary

protected Box	_bounds The bounds of the layer.
protected ColorState	_colorState The inherited color state.
protected boolean	_completed Whether or not the layer has completed.
protected BaseParticleSystemConfig.Layer	_config The layer configuration.
protected Counter	_counter The particle counter.
protected GlContext	_ctx The application context.
protected float	_geometryRadius The radius of the geometry (used to expand the bounds).
protected Influence[]	_influences The particle influences.
protected MutableInteger	_living The number of particles currently alive.
protected Box	_parentBounds The parent bounds.
protected Transform3D	_parentViewTransform The parent view transform.
protected Transform3D	_parentWorldTransform The parent world transform.
protected Particle[]	_particles The particles in the layer (first the living particles, then the pre-living particles, then the dead particles).
protected Placer	_placer The particle placer.
protected int	_preliving The number of particles currently "pre-alive."
protected Shooter	_shooter The particle shooter.
protected float	_total The total time elapsed since reset.
protected Transform3D	_worldTransform The layer's transform in world space.
protected Transform3D	_worldTransformInv The inverse of the world space transform.
protected Quaternion	_wrot Holds the world/world inverse rotation.

Fields inherited from class com.threerings.expr.SimpleScope

_parentScope

Fields inherited from interface com.threerings.expr.Scope

EPOCH, NOW

Constructor Summary

BaseParticleSystem.Layer(GlContext ctx, Scope parentScope)
Creates a new layer.

Method Summary

protected void	addBounds() Adds this layer's bounds to those of its parent.
abstract void	composite() Composites the layer for rendering.
void	drawBounds() Draws the bounds of the layer.
Camera	getCamera() Returns a reference to the camera.
BaseParticleSystemConfig.Layer	getConfig() Returns a reference to the layer's config.
String	getScopeName() Returns the name of this scope for purposes of qualification.
protected void	initParticle(int idx) Initializes the particle at the specified index.
Vector3f	pointToLayer(Vector3f point, boolean emitter) Transforms a point in-place from world space or emitter space into the space of the layer (either world space or emitter space, depending on the value of BaseParticleSystemConfig.Layer.moveParticlesWithEmitter).
void	reset() Resets the state of the layer.
Quaternion	rotationToLayer(Quaternion rot, boolean emitter) Transforms a rotation in-place from world space or emitter space into the space of the layer (either world space or emitter space, depending on the value of BaseParticleSystemConfig.Layer.moveParticlesWithEmitter).
void	setConfig(BaseParticleSystemConfig.Layer config) Sets the layer's config.
protected void	swapParticles(int idx0, int idx1) Swaps the two particles at the specified indices.
boolean	tick(float elapsed) Updates the current particle state based on the elapsed time in seconds.
Vector3f	vectorToLayer(Vector3f vector, boolean emitter) Transforms a vector in-place from world space or emitter space into the space of the layer (either world space or emitter space, depending on the value of BaseParticleSystemConfig.Layer.moveParticlesWithEmitter).

Methods inherited from class com.threerings.expr.SimpleScope

addListener, dispose, get, getParentScope, removeListener, scopeUpdated

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

_ctx

protected GlContext _ctx

The application context.

_config

@Scoped
protected BaseParticleSystemConfig.Layer _config

The layer configuration.

_parentViewTransform

@Bound(value="viewTransform")
protected Transform3D _parentViewTransform

The parent view transform.

_parentWorldTransform

@Bound(value="worldTransform")
protected Transform3D _parentWorldTransform

The parent world transform.

_parentBounds

@Bound(value="nbounds")
protected Box _parentBounds

The parent bounds.

_colorState

@Bound
protected ColorState _colorState

The inherited color state.

_worldTransform

@Scoped
protected Transform3D _worldTransform

The layer's transform in world space.

_worldTransformInv

protected Transform3D _worldTransformInv

The inverse of the world space transform.

_bounds

@Scoped
protected Box _bounds

The bounds of the layer.

_geometryRadius

protected float _geometryRadius

The radius of the geometry (used to expand the bounds).

_particles

@Scoped
protected Particle[] _particles

The particles in the layer (first the living particles, then the pre-living particles, then the dead particles).

_counter

protected Counter _counter

The particle counter.

_placer

protected Placer _placer

The particle placer.

_shooter

protected Shooter _shooter

The particle shooter.

_influences

protected Influence[] _influences

The particle influences.

_living

@Scoped
protected MutableInteger _living

The number of particles currently alive.

_preliving

protected int _preliving

The number of particles currently "pre-alive."

_total

protected float _total

The total time elapsed since reset.

_completed

protected boolean _completed

Whether or not the layer has completed.

_wrot

protected Quaternion _wrot

Holds the world/world inverse rotation.

Constructor Detail

BaseParticleSystem.Layer

public BaseParticleSystem.Layer(GlContext ctx,
                                Scope parentScope)

Creates a new layer.

Method Detail

setConfig

public void setConfig(BaseParticleSystemConfig.Layer config)

Sets the layer's config.

getConfig

public BaseParticleSystemConfig.Layer getConfig()

Returns a reference to the layer's config.

getCamera

public Camera getCamera()

Returns a reference to the camera.

reset

public void reset()

Resets the state of the layer.

tick

public boolean tick(float elapsed)

Updates the current particle state based on the elapsed time in seconds.

Returns:

true if this layer has completed, false if it is still active.

pointToLayer

public Vector3f pointToLayer(Vector3f point,
                             boolean emitter)

Transforms a point in-place from world space or emitter space into the space of the layer (either world space or emitter space, depending on the value of BaseParticleSystemConfig.Layer.moveParticlesWithEmitter).

Parameters:

emitter - if true, transform from emitter space (else from world space).

Returns:

a reference to the transformed point, for chaining.

vectorToLayer

public Vector3f vectorToLayer(Vector3f vector,
                              boolean emitter)

Transforms a vector in-place from world space or emitter space into the space of the layer (either world space or emitter space, depending on the value of BaseParticleSystemConfig.Layer.moveParticlesWithEmitter).

Parameters:

emitter - if true, transform from emitter space (else from world space).

Returns:

a reference to the transformed vector, for chaining.

rotationToLayer

public Quaternion rotationToLayer(Quaternion rot,
                                  boolean emitter)

Transforms a rotation in-place from world space or emitter space into the space of the layer (either world space or emitter space, depending on the value of BaseParticleSystemConfig.Layer.moveParticlesWithEmitter).

Parameters:

emitter - if true, transform from emitter space (else from world space).

Returns:

a reference to the transformed rotation, for chaining.

drawBounds

public void drawBounds()

Draws the bounds of the layer.

composite

public abstract void composite()

Composites the layer for rendering.

getScopeName

public String getScopeName()

Description copied from interface: Scope

Returns the name of this scope for purposes of qualification. Can return null if qualified symbols cannot specifically address this scope.

Specified by:

getScopeName in interface Scope

Overrides:

getScopeName in class SimpleScope

swapParticles

protected void swapParticles(int idx0,
                             int idx1)

Swaps the two particles at the specified indices.

initParticle

protected void initParticle(int idx)

Initializes the particle at the specified index.

addBounds

protected void addBounds()

Adds this layer's bounds to those of its parent.