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BoxEmitter Class Reference

Describes a voluminous box region in which particles are generated. More...

#include <boxEmitter.h>

Inheritance diagram for BoxEmitter:

List of all members.

Public Types
enum	emissionType { ET_EXPLICIT, ET_RADIATE, ET_CUSTOM }
Public Member Functions
	BoxEmitter (void)
	constructor
	BoxEmitter (const BoxEmitter &copy)
	copy constructor
virtual	~BoxEmitter (void)
	destructor
virtual BaseParticleEmitter *	make_copy (void)
	copier
void	set_min_bound (const LPoint3f &vmin)
	boundary assignment
void	set_max_bound (const LPoint3f &vmax)
	boundary assignment
LPoint3f	get_min_bound (void) const
	boundary accessor
LPoint3f	get_max_bound (void) const
	boundary accessor
void	generate (LPoint3f &pos, LVector3f &vel)
	parent generation function
void	set_emission_type (emissionType et)
	emission type assignment
void	set_amplitude (float a)
	amplitude assignment
void	set_amplitude_spread (float as)
	amplitude spread assignment
void	set_offset_force (const LVector3f &of)
	user-defined force
void	set_explicit_launch_vector (const LVector3f &elv)
	assignment of explicit emission launch vector
void	set_radiate_origin (const LPoint3f &ro)
	assignment of radiate emission origin point
emissionType	get_emission_type (void) const
	emission type query
float	get_amplitude (void) const
	amplitude query
float	get_amplitude_spread (void) const
	amplitude spread query
LVector3f	get_offset_force (void) const
	user-defined force
LVector3f	get_explicit_launch_vector (void) const
	query for explicit emission launch vector
LPoint3f	get_radiate_origin (void) const
	query for explicit emission launch vector
int	get_ref_count () const
	Returns the current reference count.
int	ref () const
	Explicitly increments the reference count.
int	unref () const
	Explicitly decrements the reference count.
void	test_ref_count_integrity () const
	Does some easy checks to make sure that the reference count isn't completely bogus.
Static Public Member Functions
TypeHandle	get_class_type ()
void	init_type ()
Protected Attributes
emissionType	_emission_type
LVector3f	_explicit_launch_vector
LPoint3f	_radiate_origin
float	_amplitude
float	_amplitude_spread
Private Member Functions
virtual void	assign_initial_position (LPoint3f &pos)
	Generates a location for a new particle.
virtual void	assign_initial_velocity (LVector3f &vel)
	Generates a velocity for a new particle.
Private Attributes
LPoint3f	_vmin
LPoint3f	_vmax

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Detailed Description

Describes a voluminous box region in which particles are generated.

Definition at line 36 of file boxEmitter.h.

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Member Enumeration Documentation

enum BaseParticleEmitter::emissionType [inherited]

Enumeration values: ET_EXPLICIT  ET_RADIATE  ET_CUSTOM  Definition at line 44 of file baseParticleEmitter.h. Referenced by BaseParticleEmitter::set_emission_type().

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Constructor & Destructor Documentation

BoxEmitter::BoxEmitter (  void   )

constructor Definition at line 33 of file boxEmitter.cxx. References _vmax, and _vmin.

BoxEmitter::BoxEmitter (  const BoxEmitter &  copy  )

copy constructor Definition at line 48 of file boxEmitter.cxx.

BoxEmitter::~BoxEmitter (  void   )  [virtual]

destructor Definition at line 63 of file boxEmitter.cxx. References NORMALIZED_RAND.

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Member Function Documentation

void BoxEmitter::assign_initial_position (  LPoint3f &  pos  )  [private, virtual]

Generates a location for a new particle. Implements BaseParticleEmitter. Definition at line 88 of file boxEmitter.cxx.

void BoxEmitter::assign_initial_velocity (  LVector3f &  vel  )  [private, virtual]

Generates a velocity for a new particle. Implements BaseParticleEmitter. Definition at line 111 of file boxEmitter.cxx.

void BaseParticleEmitter::generate (  LPoint3f &  pos, LVector3f &  vel )  [inherited]

parent generation function Definition at line 83 of file baseParticleEmitter.cxx.

float BaseParticleEmitter::get_amplitude (  void   )  const [inline, inherited]

amplitude query Definition at line 122 of file baseParticleEmitter.I. References BaseParticleEmitter::_offset_force, and INLINE.

float BaseParticleEmitter::get_amplitude_spread (  void   )  const [inline, inherited]

amplitude spread query Definition at line 148 of file baseParticleEmitter.I.

TypeHandle ReferenceCount::get_class_type (  void   )  [inline, static, inherited]

Reimplemented in AnimBundle, AnimBundleNode, AnimChannel< SwitchType >, AnimChannelBase, AnimChannelFixed< SwitchType >, AnimChannelMatrixXfmTable, AnimChannelScalarTable, AnimControl, AnimGroup, MovingPart< SwitchType >, MovingPartBase, MovingPartMatrix, MovingPartScalar, PartBundle, PartBundleNode, PartGroup, Character, CharacterJoint, CharacterJointBundle, CharacterSlider, ComputedVertices, CollisionEntry, CollisionHandler, CollisionHandlerEvent, CollisionHandlerFloor, CollisionHandlerPhysical, CollisionHandlerPusher, CollisionHandlerQueue, CollisionNode, CollisionPlane, CollisionPolygon, CollisionRay, CollisionSegment, CollisionSolid, CollisionSphere, CRGraphicsStateGuardian, CRSavedFrameBuffer, AnalogNode, ButtonNode, ClientAnalogDevice, ClientBase, ClientButtonDevice, ClientDevice, ClientDialDevice, ClientTrackerDevice, DialNode, MouseAndKeyboard, TrackerNode, VirtualMouse, DataNode, GraphicsChannel, GraphicsLayer, GraphicsPipe, GraphicsStateGuardian, GraphicsWindow, HardwareChannel, SavedFrameBuffer, CylindricalLens, FisheyeLens, ProjectionScreen, PSphereLens, DXGraphicsStateGuardian7, DXSavedFrameBuffer7, wdxGraphicsPipe7, wdxGraphicsWindow7, DXGraphicsStateGuardian8, DXSavedFrameBuffer8, wdxGraphicsPipe8, wdxGraphicsWindow8, EggAnimData, EggBin, EggBinMaker, EggComment, EggCoordinateSystem, EggCurve, EggData, EggExternalReference, EggFilenameNode, EggGroup, EggGroupNode, EggGroupUniquifier, EggMaterial, EggNamedObject, EggNameUniquifier, EggNode, EggNurbsCurve, EggNurbsSurface, EggObject, EggPoint, EggPolygon, EggPoolUniquifier, EggPrimitive, EggSAnimData, EggSurface, EggSwitchCondition, EggSwitchConditionDistance, EggTable, EggTexture, EggVertex, EggVertexPool, EggXfmAnimData, EggXfmSAnim, Event, EventStoreValueBase, EventStoreValue< Type >, RefCountProxy< Base >, RefCountObj< Base >, ThatThingie, ThisThingie, WhatAThingie, Thread, TypedReferenceCount, VirtualFile, VirtualFileComposite, VirtualFileSimple, WindowFramework, GLGraphicsStateGuardian, GLSavedFrameBuffer, glxGraphicsPipe, glxGraphicsStateGuardian, glxGraphicsWindow, dDrawable, Geom, GeomLine, GeomLinestrip, GeomPoint, GeomPolygon, GeomQuad, GeomSphere, GeomSprite, GeomTri, GeomTrifan, GeomTristrip, ImageBuffer, Lens, Material, MatrixLens, OrthographicLens, PerspectiveLens, PixelBuffer, Texture, GraphicsStateGuardianBase, Lerp, AutonomousLerp, LerpBlendType, EaseInBlendType, EaseOutBlendType, EaseInOutBlendType, NoBlendType, LerpFunctor, SimpleLerpFunctor< value >, SimpleQueryLerpFunctor< value >, MultiLerpFunctor, BoundingHexahedron, BoundingLine, BoundingSphere, BoundingVolume, FiniteBoundingVolume, GeometricBoundingVolume, OmniBoundingVolume, ClassicNurbsCurve, CubicCurveseg, HermiteCurve, NurbsPPCurve, ParametricCurve, PiecewiseCurve, RopeNode, AlphaTestAttrib, AmbientLight, BillboardEffect, Camera, ClipPlaneAttrib, ColorAttrib, ColorBlendAttrib, ColorScaleAttrib, ColorWriteAttrib, CompassEffect, CullBin, CullBinAttrib, CullBinBackToFront, CullBinFixed, CullBinFrontToBack, CullBinUnsorted, CullFaceAttrib, DecalEffect, DepthOffsetAttrib, DepthTestAttrib, DepthWriteAttrib, DirectionalLight, Fog, FogAttrib, GeomNode, LensNode, Light, LightAttrib, LightLensNode, LightNode, LODNode, MaterialAttrib, ModelNode, ModelRoot, NodePathComponent, PosLerpFunctor, HprLerpFunctor, ScaleLerpFunctor, ColorLerpFunctor, PosHprLerpFunctor, HprScaleLerpFunctor, PosHprScaleLerpFunctor, ColorScaleLerpFunctor, PandaNode, PlaneNode, PointLight, RenderAttrib, RenderEffect, RenderEffects, RenderModeAttrib, RenderState, SelectiveChildNode, SequenceNode, ShowBoundsEffect, Spotlight, SwitchNode, TexMatrixAttrib, TextureApplyAttrib, TextureAttrib, TransformState, EventStoreTransform, TransparencyAttrib, PGButton, PGEntry, PGItem, PGMouseWatcherBackground, PGMouseWatcherGroup, PGMouseWatcherParameter, PGMouseWatcherRegion, PGTop, PGWaitBar, ActorNode, AngularForce, AngularVectorForce, BaseForce, ForceNode, LinearCylinderVortexForce, LinearDistanceForce, LinearForce, LinearFrictionForce, LinearJitterForce, LinearNoiseForce, LinearRandomForce, LinearSinkForce, LinearSourceForce, LinearUserDefinedForce, LinearVectorForce, Physical, PhysicalNode, PhysicsObject, BamReaderParam, ButtonEventList, FactoryParam, Person, Parent, Child, TypedWritableReferenceCount, WritableParam, RIBGraphicsWindow, RIBGraphicsStateGuardian, CasterShader, OutlineShader, PlanarReflector, ProjtexShader, ProjtexShadower, Shader, FrustumShader, SpheretexHighlighter, SpheretexReflector, SpheretexShader, SpotlightShader, TextFont, TextNode, ButtonThrower, DriveInterface, MouseWatcher, MouseWatcherGroup, MouseWatcherRegion, Trackball, Transform2SG, VrpnAnalogDevice, VrpnButtonDevice, VrpnClient, VrpnDialDevice, VrpnTrackerDevice, wcrGraphicsWindow, wglGraphicsPipe, wglGraphicsStateGuardian, wglGraphicsWindow, WinGraphicsPipe, WinGraphicsWindow, AnimChannel< ACScalarSwitchType >, AnimChannel< ACMatrixSwitchType >, MovingPart< ACScalarSwitchType >, MovingPart< ACMatrixSwitchType >, SimpleLerpFunctor< LPoint3f >, SimpleLerpFunctor< LVecBase3f >, and SimpleLerpFunctor< LVecBase4f >. Definition at line 66 of file referenceCount.h.

BaseParticleEmitter::emissionType BaseParticleEmitter::get_emission_type (  void   )  const [inline, inherited]

emission type query Definition at line 44 of file baseParticleEmitter.I. References BaseParticleEmitter::_explicit_launch_vector, and INLINE.

LVector3f BaseParticleEmitter::get_explicit_launch_vector (  void   )  const [inline, inherited]

query for explicit emission launch vector Definition at line 70 of file baseParticleEmitter.I. References BaseParticleEmitter::_radiate_origin, and INLINE.

LPoint3f BoxEmitter::get_max_bound (  void   )  const [inline]

boundary accessor Definition at line 70 of file boxEmitter.I.

LPoint3f BoxEmitter::get_min_bound (  void   )  const [inline]

boundary accessor Definition at line 57 of file boxEmitter.I.

LVector3f BaseParticleEmitter::get_offset_force (  void   )  const [inline, inherited]

user-defined force Definition at line 174 of file baseParticleEmitter.I.

LPoint3f BaseParticleEmitter::get_radiate_origin (  void   )  const [inline, inherited]

query for explicit emission launch vector Definition at line 96 of file baseParticleEmitter.I. References BaseParticleEmitter::_amplitude.

int ReferenceCount::get_ref_count (   )  const [inline, inherited]

Returns the current reference count. Definition at line 183 of file referenceCount.I. Referenced by RenderState::determine_bin_index(), RenderEffects::determine_show_bounds(), FontPool::ns_garbage_collect(), TexturePool::ns_garbage_collect(), MaterialPool::ns_get_material(), and TexturePool::ns_release_texture().

void ReferenceCount::init_type (  void   )  [inline, static, inherited]

Reimplemented in AnimBundle, AnimBundleNode, AnimChannel< SwitchType >, AnimChannelBase, AnimChannelFixed< SwitchType >, AnimChannelMatrixXfmTable, AnimChannelScalarTable, AnimControl, AnimGroup, MovingPart< SwitchType >, MovingPartBase, MovingPartMatrix, MovingPartScalar, PartBundle, PartBundleNode, PartGroup, Character, CharacterJoint, CharacterJointBundle, CharacterSlider, ComputedVertices, CollisionEntry, CollisionHandler, CollisionHandlerEvent, CollisionHandlerFloor, CollisionHandlerPhysical, CollisionHandlerPusher, CollisionHandlerQueue, CollisionNode, CollisionPlane, CollisionPolygon, CollisionRay, CollisionSegment, CollisionSolid, CollisionSphere, CRGraphicsStateGuardian, CRSavedFrameBuffer, AnalogNode, ButtonNode, ClientAnalogDevice, ClientBase, ClientButtonDevice, ClientDevice, ClientDialDevice, ClientTrackerDevice, DialNode, MouseAndKeyboard, TrackerNode, VirtualMouse, DataNode, GraphicsChannel, GraphicsLayer, GraphicsPipe, GraphicsStateGuardian, GraphicsWindow, HardwareChannel, SavedFrameBuffer, CylindricalLens, FisheyeLens, ProjectionScreen, PSphereLens, DXGraphicsStateGuardian7, DXSavedFrameBuffer7, wdxGraphicsPipe7, wdxGraphicsWindow7, DXGraphicsStateGuardian8, DXSavedFrameBuffer8, wdxGraphicsPipe8, wdxGraphicsWindow8, EggAnimData, EggBin, EggBinMaker, EggComment, EggCoordinateSystem, EggCurve, EggData, EggExternalReference, EggFilenameNode, EggGroup, EggGroupNode, EggGroupUniquifier, EggMaterial, EggNamedObject, EggNameUniquifier, EggNode, EggNurbsCurve, EggNurbsSurface, EggObject, EggPoint, EggPolygon, EggPoolUniquifier, EggPrimitive, EggSAnimData, EggSurface, EggSwitchCondition, EggSwitchConditionDistance, EggTable, EggTexture, EggVertex, EggVertexPool, EggXfmAnimData, EggXfmSAnim, Event, EventStoreValueBase, RefCountProxy< Base >, RefCountObj< Base >, ThatThingie, ThisThingie, WhatAThingie, Thread, TypedReferenceCount, VirtualFile, VirtualFileComposite, VirtualFileSimple, WindowFramework, GLGraphicsStateGuardian, GLSavedFrameBuffer, glxGraphicsPipe, glxGraphicsStateGuardian, glxGraphicsWindow, dDrawable, Geom, GeomLine, GeomLinestrip, GeomPoint, GeomPolygon, GeomQuad, GeomSphere, GeomSprite, GeomTri, GeomTrifan, GeomTristrip, ImageBuffer, Lens, Material, MatrixLens, OrthographicLens, PerspectiveLens, PixelBuffer, Texture, GraphicsStateGuardianBase, Lerp, AutonomousLerp, LerpBlendType, EaseInBlendType, EaseOutBlendType, EaseInOutBlendType, NoBlendType, LerpFunctor, SimpleLerpFunctor< value >, SimpleQueryLerpFunctor< value >, MultiLerpFunctor, BoundingHexahedron, BoundingLine, BoundingSphere, BoundingVolume, FiniteBoundingVolume, GeometricBoundingVolume, OmniBoundingVolume, ClassicNurbsCurve, CubicCurveseg, HermiteCurve, NurbsPPCurve, ParametricCurve, PiecewiseCurve, RopeNode, AlphaTestAttrib, AmbientLight, BillboardEffect, Camera, ClipPlaneAttrib, ColorAttrib, ColorBlendAttrib, ColorScaleAttrib, ColorWriteAttrib, CompassEffect, CullBin, CullBinAttrib, CullBinBackToFront, CullBinFixed, CullBinFrontToBack, CullBinUnsorted, CullFaceAttrib, DecalEffect, DepthOffsetAttrib, DepthTestAttrib, DepthWriteAttrib, DirectionalLight, Fog, FogAttrib, GeomNode, LensNode, Light, LightAttrib, LightLensNode, LightNode, LODNode, MaterialAttrib, ModelNode, ModelRoot, NodePathComponent, PosLerpFunctor, HprLerpFunctor, ScaleLerpFunctor, ColorLerpFunctor, PosHprLerpFunctor, HprScaleLerpFunctor, PosHprScaleLerpFunctor, ColorScaleLerpFunctor, PandaNode, PlaneNode, PointLight, RenderAttrib, RenderEffect, RenderEffects, RenderModeAttrib, RenderState, SelectiveChildNode, SequenceNode, ShowBoundsEffect, Spotlight, SwitchNode, TexMatrixAttrib, TextureApplyAttrib, TextureAttrib, TransformState, EventStoreTransform, TransparencyAttrib, PGButton, PGEntry, PGItem, PGMouseWatcherBackground, PGMouseWatcherGroup, PGMouseWatcherParameter, PGMouseWatcherRegion, PGTop, PGWaitBar, ActorNode, AngularForce, AngularVectorForce, BaseForce, ForceNode, LinearCylinderVortexForce, LinearDistanceForce, LinearForce, LinearFrictionForce, LinearJitterForce, LinearNoiseForce, LinearRandomForce, LinearSinkForce, LinearSourceForce, LinearUserDefinedForce, LinearVectorForce, Physical, PhysicalNode, PhysicsObject, BamReaderParam, ButtonEventList, FactoryParam, Person, Parent, Child, TypedWritableReferenceCount, WritableParam, RIBGraphicsWindow, RIBGraphicsStateGuardian, CasterShader, OutlineShader, PlanarReflector, ProjtexShader, ProjtexShadower, Shader, FrustumShader, SpheretexHighlighter, SpheretexReflector, SpheretexShader, SpotlightShader, TextFont, TextNode, ButtonThrower, DriveInterface, MouseWatcher, MouseWatcherGroup, MouseWatcherRegion, Trackball, Transform2SG, VrpnAnalogDevice, VrpnButtonDevice, VrpnClient, VrpnDialDevice, VrpnTrackerDevice, wcrGraphicsWindow, wglGraphicsPipe, wglGraphicsStateGuardian, wglGraphicsWindow, WinGraphicsPipe, WinGraphicsWindow, AnimChannel< ACScalarSwitchType >, AnimChannel< ACMatrixSwitchType >, MovingPart< ACScalarSwitchType >, MovingPart< ACMatrixSwitchType >, SimpleLerpFunctor< LPoint3f >, SimpleLerpFunctor< LVecBase3f >, and SimpleLerpFunctor< LVecBase4f >. Definition at line 69 of file referenceCount.h. References INLINE. Referenced by ConfigureFn(), and ThatThingie::get_class_type().

BaseParticleEmitter * BoxEmitter::make_copy (  void   )  [virtual]

copier Implements BaseParticleEmitter. Definition at line 75 of file boxEmitter.cxx. References _vmax, and _vmin.

int ReferenceCount::ref (   )  const [inline, inherited]

Explicitly increments the reference count. User code should avoid using ref() and unref() directly, which can result in missed reference counts. Instead, let a PointerTo object manage the reference counting automatically. This function is const, even though it changes the object, because generally fiddling with an object's reference count isn't considered part of fiddling with the object. An object might be const in other ways, but we still need to accurately count the number of references to it. The return value is the new reference count. Definition at line 225 of file referenceCount.I. Referenced by ClientDevice::ClientDevice(), EggGroupNode::find_textures(), EggGroupNode::r_apply_texmats(), EggGroupNode::r_flatten_transforms(), and EggGroupNode::reverse_vertex_ordering().

void BaseParticleEmitter::set_amplitude (  float  a  )  [inline, inherited]

amplitude assignment Definition at line 109 of file baseParticleEmitter.I. References BaseParticleEmitter::_amplitude_spread, and INLINE.

void BaseParticleEmitter::set_amplitude_spread (  float  as  )  [inline, inherited]

amplitude spread assignment Definition at line 135 of file baseParticleEmitter.I. References BaseParticleEmitter::_offset_force.

void BaseParticleEmitter::set_emission_type (  emissionType  et  )  [inline, inherited]

emission type assignment Definition at line 31 of file baseParticleEmitter.I. References BaseParticleEmitter::_emission_type, BaseParticleEmitter::emissionType, and INLINE.

void BaseParticleEmitter::set_explicit_launch_vector (  const LVector3f &  elv  )  [inline, inherited]

assignment of explicit emission launch vector Definition at line 57 of file baseParticleEmitter.I.

void BoxEmitter::set_max_bound (  const LPoint3f &  vmax  )  [inline]

boundary assignment Definition at line 44 of file boxEmitter.I. References _vmin, and INLINE.

void BoxEmitter::set_min_bound (  const LPoint3f &  vmin  )  [inline]

boundary assignment Definition at line 31 of file boxEmitter.I. References _vmax, and INLINE.

void BaseParticleEmitter::set_offset_force (  const LVector3f &  of  )  [inline, inherited]

user-defined force Definition at line 161 of file baseParticleEmitter.I.

void BaseParticleEmitter::set_radiate_origin (  const LPoint3f &  ro  )  [inline, inherited]

assignment of radiate emission origin point Definition at line 83 of file baseParticleEmitter.I. References BaseParticleEmitter::_amplitude, and INLINE.

void ReferenceCount::test_ref_count_integrity (   )  const [inline, inherited]

Does some easy checks to make sure that the reference count isn't completely bogus. Definition at line 328 of file referenceCount.I. References INLINE. Referenced by EggNode::determine_bin(), and ReferenceCount::~ReferenceCount().

int ReferenceCount::unref (   )  const [inline, inherited]

Explicitly decrements the reference count. Note that the object will not be implicitly deleted by unref() simply because the reference count drops to zero. (Having a member function delete itself is problematic; plus, we don't have a virtual destructor anyway.) However, see the helper function unref_delete(). User code should avoid using ref() and unref() directly, which can result in missed reference counts. Instead, let a PointerTo object manage the reference counting automatically. This function is const, even though it changes the object, because generally fiddling with an object's reference count isn't considered part of fiddling with the object. An object might be const in other ways, but we still need to accurately count the number of references to it. The return value is the new reference count. Definition at line 293 of file referenceCount.I. References INLINE. Referenced by RenderState::determine_bin_index(), and RenderEffects::determine_show_bounds().

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Member Data Documentation

float BaseParticleEmitter::_amplitude [protected, inherited]

Definition at line 77 of file baseParticleEmitter.h. Referenced by BaseParticleEmitter::get_radiate_origin(), and BaseParticleEmitter::set_radiate_origin().

float BaseParticleEmitter::_amplitude_spread [protected, inherited]

Definition at line 78 of file baseParticleEmitter.h. Referenced by BaseParticleEmitter::set_amplitude().

emissionType BaseParticleEmitter::_emission_type [protected, inherited]

Definition at line 73 of file baseParticleEmitter.h. Referenced by BaseParticleEmitter::set_emission_type().

LVector3f BaseParticleEmitter::_explicit_launch_vector [protected, inherited]

Definition at line 74 of file baseParticleEmitter.h. Referenced by BaseParticleEmitter::get_emission_type(), and BaseParticleEmitter::~BaseParticleEmitter().

LPoint3f BaseParticleEmitter::_radiate_origin [protected, inherited]

Definition at line 75 of file baseParticleEmitter.h. Referenced by BaseParticleEmitter::get_explicit_launch_vector(), and BaseParticleEmitter::~BaseParticleEmitter().

LPoint3f BoxEmitter::_vmax [private]

Definition at line 38 of file boxEmitter.h. Referenced by BoxEmitter(), make_copy(), and set_min_bound().

LPoint3f BoxEmitter::_vmin [private]

Definition at line 38 of file boxEmitter.h. Referenced by BoxEmitter(), make_copy(), and set_max_bound().

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The documentation for this class was generated from the following files:

• panda/src/particlesystem/boxEmitter.h
• panda/src/particlesystem/boxEmitter.cxx
• panda/src/particlesystem/boxEmitter.I

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