Ogre::ParticleEmitter Class Reference

Abstract class defining the interface to be implemented by particle emitters. More...

#include <OgreParticleEmitter.h>

Inheritance diagram for Ogre::ParticleEmitter:

List of all members.


Public Member Functions
	ParticleEmitter (ParticleSystem *psys)
virtual	~ParticleEmitter ()
	Virtual destructor essential.
virtual void	setPosition (const Vector3 &pos)
	Sets the position of this emitter relative to the particle system center.
virtual const Vector3 &	getPosition (void) const
	Returns the position of this emitter relative to thte center of the particle system.
virtual void	setDirection (const Vector3 &direction)
	Sets the direction of the emitter.
virtual const Vector3 &	getDirection (void) const
	Returns the base direction of the emitter.
virtual void	setAngle (const Radian &angle)
	Sets the maximum angle away from the emitter direction which particle will be emitted.
virtual const Radian &	getAngle (void) const
	Returns the maximum angle which the initial particle direction can deviate from the emitters base direction.
virtual void	setParticleVelocity (Real speed)
	Sets the initial velocity of particles emitted.
virtual void	setParticleVelocity (Real min, Real max)
	Sets the initial velocity range of particles emitted.
virtual void	setMinParticleVelocity (Real min)
	Returns the minimum particle velocity.
virtual void	setMaxParticleVelocity (Real max)
	Returns the maximum particle velocity.
virtual Real	getParticleVelocity (void) const
	Returns the initial velocity of particles emitted.
virtual Real	getMinParticleVelocity (void) const
	Returns the minimum particle velocity.
virtual Real	getMaxParticleVelocity (void) const
	Returns the maximum particle velocity.
virtual void	setEmissionRate (Real particlesPerSecond)
	Sets the emission rate for this emitter.
virtual Real	getEmissionRate (void) const
	Returns the emission rate set for this emitter.
virtual void	setTimeToLive (Real ttl)
	Sets the lifetime of all particles emitted.
virtual void	setTimeToLive (Real minTtl, Real maxTtl)
	Sets the range of lifetime for particles emitted.
virtual void	setMinTimeToLive (Real min)
	Sets the minimum time each particle will live for.
virtual void	setMaxTimeToLive (Real max)
	Sets the maximum time each particle will live for.
virtual Real	getTimeToLive (void) const
	Gets the time each particle will live for.
virtual Real	getMinTimeToLive (void) const
	Gets the minimum time each particle will live for.
virtual Real	getMaxTimeToLive (void) const
	Gets the maximum time each particle will live for.
virtual void	setColour (const ColourValue &colour)
	Sets the initial colour of particles emitted.
virtual void	setColour (const ColourValue &colourStart, const ColourValue &colourEnd)
	Sets the range of colours for emitted particles.
virtual void	setColourRangeStart (const ColourValue &colour)
	Sets the minimum colour of particles to be emitted.
virtual void	setColourRangeEnd (const ColourValue &colour)
	Sets the maximum colour of particles to be emitted.
virtual const ColourValue &	getColour (void) const
	Gets the colour of particles to be emitted.
virtual const ColourValue &	getColourRangeStart (void) const
	Gets the minimum colour of particles to be emitted.
virtual const ColourValue &	getColourRangeEnd (void) const
	Gets the maximum colour of particles to be emitted.
virtual unsigned short	_getEmissionCount (Real timeElapsed)=0
	Gets the number of particles which this emitter would like to emit based on the time elapsed.
virtual void	_initParticle (Particle *pParticle)
	Initialises a particle based on the emitter's approach and parameters.
const String &	getType (void) const
	Returns the name of the type of emitter.
virtual void	setEnabled (bool enabled)
	Sets whether or not the emitter is enabled.
virtual bool	getEnabled (void) const
	Gets the flag indicating if this emitter is enabled or not.
virtual void	setStartTime (Real startTime)
	Sets the 'start time' of this emitter.
virtual Real	getStartTime (void) const
	Gets the start time of the emitter.
virtual void	setDuration (Real duration)
	Sets the duration of the emitter.
virtual Real	getDuration (void) const
	Gets the duration of the emitter from when it is created or re-enabled.
virtual void	setDuration (Real min, Real max)
	Sets the range of random duration for this emitter.
virtual void	setMinDuration (Real min)
	Sets the minimum duration of this emitter in seconds (see setDuration for more details).
virtual void	setMaxDuration (Real max)
	Sets the maximum duration of this emitter in seconds (see setDuration for more details).
virtual Real	getMinDuration (void) const
	Gets the minimum duration of this emitter in seconds (see setDuration for more details).
virtual Real	getMaxDuration (void) const
	Gets the maximum duration of this emitter in seconds (see setDuration for more details).
virtual void	setRepeatDelay (Real duration)
	Sets the time between repeats of the emitter.
virtual Real	getRepeatDelay (void) const
	Gets the duration of the emitter from when it is created or re-enabled.
virtual void	setRepeatDelay (Real min, Real max)
	Sets the range of random duration for this emitter.
virtual void	setMinRepeatDelay (Real min)
	Sets the minimum duration of this emitter in seconds (see setRepeatDelay for more details).
virtual void	setMaxRepeatDelay (Real max)
	Sets the maximum duration of this emitter in seconds (see setRepeatDelay for more details).
virtual Real	getMinRepeatDelay (void) const
	Gets the minimum duration of this emitter in seconds (see setRepeatDelay for more details).
virtual Real	getMaxRepeatDelay (void) const
	Gets the maximum duration of this emitter in seconds (see setRepeatDelay for more details).
ParamDictionary *	getParamDictionary (void)
	Retrieves the parameter dictionary for this class.
const ParamDictionary *	getParamDictionary (void) const
const ParameterList &	getParameters (void) const
	Retrieves a list of parameters valid for this object.
virtual bool	setParameter (const String &name, const String &value)
	Generic parameter setting method.
virtual void	setParameterList (const NameValuePairList &paramList)
	Generic multiple parameter setting method.
virtual String	getParameter (const String &name) const
	Generic parameter retrieval method.
virtual void	copyParametersTo (StringInterface *dest) const
	Method for copying this object's parameters to another object.
Static Public Member Functions
void	cleanupDictionary ()
	Cleans up the static 'msDictionary' required to reset Ogre, otherwise the containers are left with invalid pointers, which will lead to a crash as soon as one of the ResourceManager implementers (e.g.
Protected Member Functions
virtual void	genEmissionDirection (Vector3 &destVector)
	Internal utility method for generating particle exit direction.
virtual void	genEmissionVelocity (Vector3 &destVector)
	Internal utility method to apply velocity to a particle direction.
virtual Real	genEmissionTTL (void)
	Internal utility method for generating a time-to-live for a particle.
virtual void	genEmissionColour (ColourValue &destColour)
	Internal utility method for generating a colour for a particle.
virtual unsigned short	genConstantEmissionCount (Real timeElapsed)
	Internal utility method for generating an emission count based on a constant emission rate.
void	addBaseParameters (void)
	Internal method for setting up the basic parameter definitions for a subclass.
void	initDurationRepeat (void)
	Internal method for initialising the duration & repeat of an emitter.
bool	createParamDictionary (const String &className)
	Internal method for creating a parameter dictionary for the class, if it does not already exist.
Protected Attributes
ParticleSystem *	mParent
	Parent particle system.
Vector3	mPosition
	Position relative to the center of the ParticleSystem.
Real	mEmissionRate
	Rate in particles per second at which this emitter wishes to emit particles.
String	mType
	Name of the type of emitter, MUST be initialised by subclasses.
Vector3	mDirection
	Base direction of the emitter, may not be used by some emitters.
Vector3	mUp
Radian	mAngle
	Angle around direction which particles may be emitted, internally radians but angleunits for interface.
Real	mMinSpeed
	Min speed of particles.
Real	mMaxSpeed
	Max speed of particles.
Real	mMinTTL
	Initial time-to-live of particles (min).
Real	mMaxTTL
	Initial time-to-live of particles (max).
ColourValue	mColourRangeStart
	Initial colour of particles (range start).
ColourValue	mColourRangeEnd
	Initial colour of particles (range end).
bool	mEnabled
	Whether this emitter is currently enabled (defaults to true).
Real	mStartTime
	Start time (in seconds from start of first call to ParticleSystem to update).
Real	mDurationMin
	Minimum length of time emitter will run for (0 = forever).
Real	mDurationMax
	Maximum length of time the emitter will run for (0 = forever).
Real	mDurationRemain
	Current duration remainder.
Real	mRepeatDelayMin
	Time between each repeat.
Real	mRepeatDelayMax
Real	mRepeatDelayRemain
	Repeat delay left.
Real	mRemainder
String	mParamDictName
	Class name for this instance to be used as a lookup (must be initialised by subclasses).
Static Protected Attributes
EmitterCommands::CmdAngle	msAngleCmd
EmitterCommands::CmdColour	msColourCmd
EmitterCommands::CmdColourRangeStart	msColourRangeStartCmd
EmitterCommands::CmdColourRangeEnd	msColourRangeEndCmd
EmitterCommands::CmdDirection	msDirectionCmd
EmitterCommands::CmdEmissionRate	msEmissionRateCmd
EmitterCommands::CmdMaxTTL	msMaxTTLCmd
EmitterCommands::CmdMaxVelocity	msMaxVelocityCmd
EmitterCommands::CmdMinTTL	msMinTTLCmd
EmitterCommands::CmdMinVelocity	msMinVelocityCmd
EmitterCommands::CmdPosition	msPositionCmd
EmitterCommands::CmdTTL	msTTLCmd
EmitterCommands::CmdVelocity	msVelocityCmd
EmitterCommands::CmdDuration	msDurationCmd
EmitterCommands::CmdMinDuration	msMinDurationCmd
EmitterCommands::CmdMaxDuration	msMaxDurationCmd
EmitterCommands::CmdRepeatDelay	msRepeatDelayCmd
EmitterCommands::CmdMinRepeatDelay	msMinRepeatDelayCmd
EmitterCommands::CmdMaxRepeatDelay	msMaxRepeatDelayCmd
ParamDictionaryMap	msDictionary
	Dictionary of parameters.

Detailed Description

Abstract class defining the interface to be implemented by particle emitters.

Remarks:: Particle emitters are the sources of particles in a particle system. This class defines the ParticleEmitter interface, and provides a basic implementation for tasks which most emitters will do (these are of course overridable). Particle emitters can be grouped into types, e.g. 'point' emitters, 'box' emitters etc; each type will create particles with a different starting point, direction and velocity (although within the types you can configure the ranges of these parameters).

: Because there are so many types of emitters you could use, OGRE chooses not to dictate the available types. It comes with some in-built, but allows plugins or applications to extend the emitter types available. This is done by subclassing ParticleEmitter to have the appropriate emission behaviour you want, and also creating a subclass of ParticleEmitterFactory which is responsible for creating instances of your new emitter type. You register this factory with the ParticleSystemManager using addEmitterFactory, and from then on emitters of this type can be created either from code or through text particle scripts by naming the type.

: This same approach is used for ParticleAffectors (which modify existing particles per frame). This means that OGRE is particularly flexible when it comes to creating particle system effects, with literally infinite combinations of emitter and affector types, and paramters within those types.

Definition at line 62 of file OgreParticleEmitter.h.

Constructor & Destructor Documentation

Ogre::ParticleEmitter::ParticleEmitter ( ParticleSystem * psys )

virtual Ogre::ParticleEmitter::~ParticleEmitter ( ) [virtual]

Virtual destructor essential.

Member Function Documentation

virtual unsigned short Ogre::ParticleEmitter::_getEmissionCount ( Real timeElapsed ) [pure virtual]

Gets the number of particles which this emitter would like to emit based on the time elapsed.

Remarks:
For efficiency the emitter does not actually create new Particle instances (these are reused by the ParticleSystem as existing particles 'die'). The implementation for this method must return the number of particles the emitter would like to emit given the number of seconds which have elapsed (passed in as a parameter).

Based on the return value from this method, the ParticleSystem class will call _initParticle once for each particle it chooses to allow to be emitted by this emitter. The emitter should not track these _initParticle calls, it should assume all emissions requested were made (even if they could not be because of particle quotas).

Implemented in Ogre::AreaEmitter, and Ogre::PointEmitter.

virtual void Ogre::ParticleEmitter::_initParticle ( Particle * pParticle ) [virtual]

Initialises a particle based on the emitter's approach and parameters.

Remarks:
See the _getEmissionCount method for details of why there is a separation between 'requested' emissions and actual initialised particles.

Parameters:

pParticle Pointer to a particle which must be initialised based on how this emitter starts particles. This is passed as a pointer rather than being created by the emitter so the ParticleSystem can reuse Particle instances, and can also set defaults itself.

Reimplemented in Ogre::BoxEmitter, Ogre::CylinderEmitter, Ogre::EllipsoidEmitter, Ogre::HollowEllipsoidEmitter, Ogre::PointEmitter, and Ogre::RingEmitter.
Definition at line 360 of file OgreParticleEmitter.h.
References Ogre::Particle::resetDimensions().

void Ogre::ParticleEmitter::addBaseParameters ( void ) [protected]

Internal method for setting up the basic parameter definitions for a subclass.

Remarks:
Because StringInterface holds a dictionary of parameters per class, subclasses need to call this to ask the base class to add it's parameters to their dictionary as well. Can't do this in the constructor because that runs in a non-virtual context.

The subclass must have called it's own createParamDictionary before calling this method.

void Ogre::StringInterface::cleanupDictionary ( ) [static, inherited]

Cleans up the static 'msDictionary' required to reset Ogre, otherwise the containers are left with invalid pointers, which will lead to a crash as soon as one of the ResourceManager implementers (e.g.
MaterialManager) initializes.

virtual void Ogre::StringInterface::copyParametersTo ( StringInterface * dest ) const [virtual, inherited]

Method for copying this object's parameters to another object.

Remarks:
This method takes the values of all the object's parameters and tries to set the same values on the destination object. This provides a completely type independent way to copy parameters to other objects. Note that because of the String manipulation involved, this should not be regarded as an efficient process and should be saved for times outside of the rendering loop.

Any unrecognised parameters will be ignored as with setParameter method.

Parameters:

dest Pointer to object to have it's parameters set the same as this object.

Definition at line 296 of file OgreStringInterface.h.
References Ogre::ParamDictionary::mParamDefs, and Ogre::StringInterface::setParameter().

bool Ogre::StringInterface::createParamDictionary ( const String & className ) [protected, inherited]

Internal method for creating a parameter dictionary for the class, if it does not already exist.

Remarks:
This method will check to see if a parameter dictionary exist for this class yet, and if not will create one. NB you must supply the name of the class (RTTI is not used or performance).

Parameters:

className the name of the class using the dictionary

Returns:
true if a new dictionary was created, false if it was already there

Definition at line 172 of file OgreStringInterface.h.
References Ogre::String.

virtual unsigned short Ogre::ParticleEmitter::genConstantEmissionCount ( Real timeElapsed ) [protected, virtual]

Internal utility method for generating an emission count based on a constant emission rate.

virtual void Ogre::ParticleEmitter::genEmissionColour ( ColourValue & destColour ) [protected, virtual]

Internal utility method for generating a colour for a particle.

virtual void Ogre::ParticleEmitter::genEmissionDirection ( Vector3 & destVector ) [protected, virtual]

Internal utility method for generating particle exit direction.

Parameters:

destVector Reference to vector to complete with new direction (normalised)

virtual Real Ogre::ParticleEmitter::genEmissionTTL ( void ) [protected, virtual]

Internal utility method for generating a time-to-live for a particle.

virtual void Ogre::ParticleEmitter::genEmissionVelocity ( Vector3 & destVector ) [protected, virtual]

Internal utility method to apply velocity to a particle direction.

Parameters:

destVector The vector to scale by a randomly generated scale between min and max speed. Assumed normalised already, and likely already oriented in the right direction.

virtual const Radian& Ogre::ParticleEmitter::getAngle ( void ) const [virtual]

Returns the maximum angle which the initial particle direction can deviate from the emitters base direction.

virtual const ColourValue& Ogre::ParticleEmitter::getColour ( void ) const [virtual]

Gets the colour of particles to be emitted.

virtual const ColourValue& Ogre::ParticleEmitter::getColourRangeEnd ( void ) const [virtual]

Gets the maximum colour of particles to be emitted.

virtual const ColourValue& Ogre::ParticleEmitter::getColourRangeStart ( void ) const [virtual]

Gets the minimum colour of particles to be emitted.

virtual const Vector3& Ogre::ParticleEmitter::getDirection ( void ) const [virtual]

Returns the base direction of the emitter.

virtual Real Ogre::ParticleEmitter::getDuration ( void ) const [virtual]

Gets the duration of the emitter from when it is created or re-enabled.

virtual Real Ogre::ParticleEmitter::getEmissionRate ( void ) const [virtual]

Returns the emission rate set for this emitter.

virtual bool Ogre::ParticleEmitter::getEnabled ( void ) const [virtual]

Gets the flag indicating if this emitter is enabled or not.

virtual Real Ogre::ParticleEmitter::getMaxDuration ( void ) const [virtual]

Gets the maximum duration of this emitter in seconds (see setDuration for more details).

virtual Real Ogre::ParticleEmitter::getMaxParticleVelocity ( void ) const [virtual]

Returns the maximum particle velocity.

virtual Real Ogre::ParticleEmitter::getMaxRepeatDelay ( void ) const [virtual]

Gets the maximum duration of this emitter in seconds (see setRepeatDelay for more details).

virtual Real Ogre::ParticleEmitter::getMaxTimeToLive ( void ) const [virtual]

Gets the maximum time each particle will live for.

virtual Real Ogre::ParticleEmitter::getMinDuration ( void ) const [virtual]

Gets the minimum duration of this emitter in seconds (see setDuration for more details).

virtual Real Ogre::ParticleEmitter::getMinParticleVelocity ( void ) const [virtual]

Returns the minimum particle velocity.

virtual Real Ogre::ParticleEmitter::getMinRepeatDelay ( void ) const [virtual]

Gets the minimum duration of this emitter in seconds (see setRepeatDelay for more details).

virtual Real Ogre::ParticleEmitter::getMinTimeToLive ( void ) const [virtual]

Gets the minimum time each particle will live for.

const ParamDictionary* Ogre::StringInterface::getParamDictionary ( void ) const [inherited]

Definition at line 209 of file OgreStringInterface.h.

ParamDictionary* Ogre::StringInterface::getParamDictionary ( void ) [inherited]

Retrieves the parameter dictionary for this class.

Remarks:
Only valid to call this after createParamDictionary.

Returns:
Pointer to ParamDictionary shared by all instances of this class which you can add parameters to, retrieve parameters etc.

Definition at line 196 of file OgreStringInterface.h.

virtual String Ogre::StringInterface::getParameter ( const String & name ) const [virtual, inherited]

Generic parameter retrieval method.

Remarks:
Call this method with the name of a parameter to retrieve a string-format value of the parameter in question. If in doubt, check the parameter definition in the list returned from getParameters for the type of this parameter. If you like you can use StringConverter to convert this string back into a native type.

Parameters:

name The name of the parameter to get

Returns:
String value of parameter, blank if not found

Definition at line 265 of file OgreStringInterface.h.
References Ogre::ParamCommand::doGet(), Ogre::ParamDictionary::getParamCommand(), and Ogre::String.

const ParameterList& Ogre::StringInterface::getParameters ( void ) const [inherited]

Retrieves a list of parameters valid for this object.

Returns:
A reference to a static list of ParameterDef objects.

virtual Real Ogre::ParticleEmitter::getParticleVelocity ( void ) const [virtual]

Returns the initial velocity of particles emitted.

virtual const Vector3& Ogre::ParticleEmitter::getPosition ( void ) const [virtual]

Returns the position of this emitter relative to thte center of the particle system.

virtual Real Ogre::ParticleEmitter::getRepeatDelay ( void ) const [virtual]

Gets the duration of the emitter from when it is created or re-enabled.

virtual Real Ogre::ParticleEmitter::getStartTime ( void ) const [virtual]

Gets the start time of the emitter.

virtual Real Ogre::ParticleEmitter::getTimeToLive ( void ) const [virtual]

Gets the time each particle will live for.

const String& Ogre::ParticleEmitter::getType ( void ) const

Returns the name of the type of emitter.

Remarks:
This property is useful for determining the type of emitter procedurally so another can be created.

Definition at line 371 of file OgreParticleEmitter.h.
References Ogre::String.

void Ogre::ParticleEmitter::initDurationRepeat ( void ) [protected]

Internal method for initialising the duration & repeat of an emitter.

virtual void Ogre::ParticleEmitter::setAngle ( const Radian & angle ) [virtual]

Sets the maximum angle away from the emitter direction which particle will be emitted.

Remarks:
Whilst the direction property defines the general direction of emission for particles, this property defines how far the emission angle can deviate away from this base direction. This allows you to create a scatter effect - if set to 0, all particles will be emitted exactly along the emitters direction vector, wheras if you set it to 180 degrees or more, particles will be emitted in a sphere, i.e. in all directions.

Parameters:

degrees Maximum angle which initial particle direction can deviate from the emitter base direction vector.

virtual void Ogre::ParticleEmitter::setColour ( const ColourValue & colourStart,

const ColourValue & colourEnd

) [virtual]

Sets the range of colours for emitted particles.

Remarks:
Particles have an initial colour on emission which the emitter sets. This method sets the range of this colour. See the alternate version of this method which takes a single colour in order to set a constant colour for all particles. Emitters may choose to randomly assign a colour in this range, or may use some other method to vary the colour.

Parameters:

colourStart The start of the colour range

colourEnd The end of the colour range

virtual void Ogre::ParticleEmitter::setColour ( const ColourValue & colour ) [virtual]

Sets the initial colour of particles emitted.

Remarks:
Particles have an initial colour on emission which the emitter sets. This method sets this colour. See the alternate version of this method which takes 2 colours in order to establish a range of colours to be assigned to particles.

Parameters:

colour The colour which all particles will be given on emission.

virtual void Ogre::ParticleEmitter::setColourRangeEnd ( const ColourValue & colour ) [virtual]

Sets the maximum colour of particles to be emitted.

virtual void Ogre::ParticleEmitter::setColourRangeStart ( const ColourValue & colour ) [virtual]

Sets the minimum colour of particles to be emitted.

virtual void Ogre::ParticleEmitter::setDirection ( const Vector3 & direction ) [virtual]

Sets the direction of the emitter.

Remarks:
Most emitters will have a base direction in which they emit particles (those which emit in all directions will ignore this parameter). They may not emit exactly along this vector for every particle, many will introduce a random scatter around this vector using the angle property.

Parameters:

direction The base direction for particles emitted.

Reimplemented in Ogre::AreaEmitter.

virtual void Ogre::ParticleEmitter::setDuration ( Real min,

Real max

) [virtual]

Sets the range of random duration for this emitter.

Remarks:
By default emitters run indefinitely (unless you manually disable them). By setting this parameter, you can make an emitter turn off on it's own after a random number of seconds. It will then remain disabled until either setEnabled(true) is called, or if the 'repeatAfter' parameter has been set it will also repeat after a number of seconds.

Also see the alternative version of this method which allows you to set a constant duration.

Parameters:

min The minimum duration in seconds.

max The minimum duration in seconds.

virtual void Ogre::ParticleEmitter::setDuration ( Real duration ) [virtual]

Sets the duration of the emitter.

Remarks:
By default emitters run indefinitely (unless you manually disable them). By setting this parameter, you can make an emitter turn off on it's own after a set number of seconds. It will then remain disabled until either setEnabled(true) is called, or if the 'repeatAfter' parameter has been set it will also repeat after a number of seconds.

Also see the alternative version of this method which allows you to set a min and max duration for a random variable duration.

Parameters:

duration The duration in seconds.

virtual void Ogre::ParticleEmitter::setEmissionRate ( Real particlesPerSecond ) [virtual]

Sets the emission rate for this emitter.

Remarks:
This method tells the emitter how many particles per second should be emitted. The emitter subclass does not have to emit these in a continuous burst - this is a relative parameter and the emitter may choose to emit all of the second's worth of particles every half-second for example. This is controlled by the emitter's getEmissionCount method.

Also, if the ParticleSystem's particle quota is exceeded, not all the particles requested may be actually emitted.

Parameters:

particlesPerSecond The number of particles to be emitted every second.

virtual void Ogre::ParticleEmitter::setEnabled ( bool enabled ) [virtual]

Sets whether or not the emitter is enabled.

Remarks:
You can turn an emitter off completely by setting this parameter to false.

virtual void Ogre::ParticleEmitter::setMaxDuration ( Real max ) [virtual]

Sets the maximum duration of this emitter in seconds (see setDuration for more details).

virtual void Ogre::ParticleEmitter::setMaxParticleVelocity ( Real max ) [virtual]

Returns the maximum particle velocity.

virtual void Ogre::ParticleEmitter::setMaxRepeatDelay ( Real max ) [virtual]

Sets the maximum duration of this emitter in seconds (see setRepeatDelay for more details).

virtual void Ogre::ParticleEmitter::setMaxTimeToLive ( Real max ) [virtual]

Sets the maximum time each particle will live for.

virtual void Ogre::ParticleEmitter::setMinDuration ( Real min ) [virtual]

Sets the minimum duration of this emitter in seconds (see setDuration for more details).

virtual void Ogre::ParticleEmitter::setMinParticleVelocity ( Real min ) [virtual]

Returns the minimum particle velocity.

virtual void Ogre::ParticleEmitter::setMinRepeatDelay ( Real min ) [virtual]

Sets the minimum duration of this emitter in seconds (see setRepeatDelay for more details).

virtual void Ogre::ParticleEmitter::setMinTimeToLive ( Real min ) [virtual]

Sets the minimum time each particle will live for.

virtual bool Ogre::StringInterface::setParameter ( const String & name,

const String & value

) [virtual, inherited]

Generic parameter setting method.

Remarks:
Call this method with the name of a parameter and a string version of the value to set. The implementor will convert the string to a native type internally. If in doubt, check the parameter definition in the list returned from StringInterface::getParameters.

Parameters:

name The name of the parameter to set

value String value. Must be in the right format for the type specified in the parameter definition. See the StringConverter class for more information.

Returns:
true if set was successful, false otherwise (NB no exceptions thrown - tolerant method)

Referenced by Ogre::StringInterface::copyParametersTo().

virtual void Ogre::StringInterface::setParameterList ( const NameValuePairList & paramList ) [virtual, inherited]

Generic multiple parameter setting method.

Remarks:
Call this method with a list of name / value pairs to set. The implementor will convert the string to a native type internally. If in doubt, check the parameter definition in the list returned from StringInterface::getParameters.

Parameters:

paramList Name/value pair list

virtual void Ogre::ParticleEmitter::setParticleVelocity ( Real min,

Real max

) [virtual]

Sets the initial velocity range of particles emitted.

Remarks:
This method sets the range of starting speeds for emitted particles. See the alternate version of this method which takes 1 parameter if you want a constant speed. This emitter will randomly choose a speed between the minimum and maximum for each particle.

Parameters:

max The maximum speed in world units per second for the initial particle speed on emission.

min The minimum speed in world units per second for the initial particle speed on emission.

virtual void Ogre::ParticleEmitter::setParticleVelocity ( Real speed ) [virtual]

Sets the initial velocity of particles emitted.

Remarks:
This method sets a constant speed for emitted particles. See the alternate version of this method which takes 2 parameters if you want a variable speed.

Parameters:

speed The initial speed in world units per second which every particle emitted starts with.

virtual void Ogre::ParticleEmitter::setPosition ( const Vector3 & pos ) [virtual]

Sets the position of this emitter relative to the particle system center.

virtual void Ogre::ParticleEmitter::setRepeatDelay ( Real min,

Real max

) [virtual]

Sets the range of random duration for this emitter.

Remarks:
By default emitters run indefinitely (unless you manually disable them). By setting this parameter, you can make an emitter turn off on it's own after a random number of seconds. It will then remain disabled until either setEnabled(true) is called, or if the 'repeatAfter' parameter has been set it will also repeat after a number of seconds.

Also see the alternative version of this method which allows you to set a constant duration.

Parameters:

min The minimum duration in seconds.

max The minimum duration in seconds.

virtual void Ogre::ParticleEmitter::setRepeatDelay ( Real duration ) [virtual]

Sets the time between repeats of the emitter.

Remarks:
By default emitters run indefinitely (unless you manually disable them). However, if you manually disable the emitter (by calling setEnabled(false), or it's duration runs out, it will cease to emit

Also see the alternative version of this method which allows you to set a min and max duration for a random variable duration.

Parameters:

duration The duration in seconds.

virtual void Ogre::ParticleEmitter::setStartTime ( Real startTime ) [virtual]

Sets the 'start time' of this emitter.

Remarks:
By default an emitter starts straight away as soon as a ParticleSystem is first created, or also just after it is re-enabled. This parameter allows you to set a time delay so that the emitter does not 'kick in' until later.

Parameters:

startTime The time in seconds from the creation or enabling of the emitter.

virtual void Ogre::ParticleEmitter::setTimeToLive ( Real minTtl,

Real maxTtl

) [virtual]

Sets the range of lifetime for particles emitted.

Remarks:
The emitter initialises particles with a time-to-live (TTL), the number of seconds a particle will exist before being destroyed. This method sets a range for the TTL for all particles emitted; the ttl may be randomised between these 2 extremes or will vary some other way depending on the emitter. Note that affectors are able to modify the TTL of particles later.

Also see the alternate version of this method which takes a single TTL in order to set a constant TTL for all particles.

Parameters:

minTtl The minimum number of seconds each particle will live for.

maxTtl The maximum number of seconds each particle will live for.

virtual void Ogre::ParticleEmitter::setTimeToLive ( Real ttl ) [virtual]

Sets the lifetime of all particles emitted.

Remarks:
The emitter initialises particles with a time-to-live (TTL), the number of seconds a particle will exist before being destroyed. This method sets a constant TTL for all particles emitted. Note that affectors are able to modify the TTL of particles later.

Also see the alternate version of this method which takes a min and max TTL in order to have the TTL vary per particle.

Parameters:

ttl The number of seconds each particle will live for.

Member Data Documentation

Radian Ogre::ParticleEmitter::mAngle [protected]

Angle around direction which particles may be emitted, internally radians but angleunits for interface.

Definition at line 101 of file OgreParticleEmitter.h.

ColourValue Ogre::ParticleEmitter::mColourRangeEnd [protected]

Initial colour of particles (range end).

Definition at line 113 of file OgreParticleEmitter.h.

ColourValue Ogre::ParticleEmitter::mColourRangeStart [protected]

Initial colour of particles (range start).

Definition at line 111 of file OgreParticleEmitter.h.

Vector3 Ogre::ParticleEmitter::mDirection [protected]

Base direction of the emitter, may not be used by some emitters.

Definition at line 97 of file OgreParticleEmitter.h.

Real Ogre::ParticleEmitter::mDurationMax [protected]

Maximum length of time the emitter will run for (0 = forever).

Definition at line 123 of file OgreParticleEmitter.h.

Real Ogre::ParticleEmitter::mDurationMin [protected]

Minimum length of time emitter will run for (0 = forever).

Definition at line 121 of file OgreParticleEmitter.h.

Real Ogre::ParticleEmitter::mDurationRemain [protected]

Current duration remainder.

Definition at line 125 of file OgreParticleEmitter.h.

Real Ogre::ParticleEmitter::mEmissionRate [protected]

Rate in particles per second at which this emitter wishes to emit particles.

Definition at line 93 of file OgreParticleEmitter.h.

bool Ogre::ParticleEmitter::mEnabled [protected]

Whether this emitter is currently enabled (defaults to true).

Definition at line 116 of file OgreParticleEmitter.h.

Real Ogre::ParticleEmitter::mMaxSpeed [protected]

Max speed of particles.

Definition at line 105 of file OgreParticleEmitter.h.

Real Ogre::ParticleEmitter::mMaxTTL [protected]

Initial time-to-live of particles (max).

Definition at line 109 of file OgreParticleEmitter.h.

Real Ogre::ParticleEmitter::mMinSpeed [protected]

Min speed of particles.

Definition at line 103 of file OgreParticleEmitter.h.

Real Ogre::ParticleEmitter::mMinTTL [protected]

Initial time-to-live of particles (min).

Definition at line 107 of file OgreParticleEmitter.h.

String Ogre::StringInterface::mParamDictName [protected, inherited]

Class name for this instance to be used as a lookup (must be initialised by subclasses).

Definition at line 160 of file OgreStringInterface.h.

ParticleSystem* Ogre::ParticleEmitter::mParent [protected]

Parent particle system.

Definition at line 89 of file OgreParticleEmitter.h.

Vector3 Ogre::ParticleEmitter::mPosition [protected]

Position relative to the center of the ParticleSystem.

Definition at line 91 of file OgreParticleEmitter.h.

Real Ogre::ParticleEmitter::mRemainder [protected]

Definition at line 134 of file OgreParticleEmitter.h.

Real Ogre::ParticleEmitter::mRepeatDelayMax [protected]

Definition at line 129 of file OgreParticleEmitter.h.

Real Ogre::ParticleEmitter::mRepeatDelayMin [protected]

Time between each repeat.

Definition at line 128 of file OgreParticleEmitter.h.

Real Ogre::ParticleEmitter::mRepeatDelayRemain [protected]

Repeat delay left.

Definition at line 131 of file OgreParticleEmitter.h.

EmitterCommands::CmdAngle Ogre::ParticleEmitter::msAngleCmd [static, protected]

Definition at line 67 of file OgreParticleEmitter.h.

EmitterCommands::CmdColour Ogre::ParticleEmitter::msColourCmd [static, protected]

Definition at line 68 of file OgreParticleEmitter.h.

EmitterCommands::CmdColourRangeEnd Ogre::ParticleEmitter::msColourRangeEndCmd [static, protected]

Definition at line 70 of file OgreParticleEmitter.h.

EmitterCommands::CmdColourRangeStart Ogre::ParticleEmitter::msColourRangeStartCmd [static, protected]

Definition at line 69 of file OgreParticleEmitter.h.

ParamDictionaryMap Ogre::StringInterface::msDictionary [static, protected, inherited]

Dictionary of parameters.

Definition at line 157 of file OgreStringInterface.h.

EmitterCommands::CmdDirection Ogre::ParticleEmitter::msDirectionCmd [static, protected]

Definition at line 71 of file OgreParticleEmitter.h.

EmitterCommands::CmdDuration Ogre::ParticleEmitter::msDurationCmd [static, protected]

Definition at line 80 of file OgreParticleEmitter.h.

EmitterCommands::CmdEmissionRate Ogre::ParticleEmitter::msEmissionRateCmd [static, protected]

Definition at line 72 of file OgreParticleEmitter.h.

EmitterCommands::CmdMaxDuration Ogre::ParticleEmitter::msMaxDurationCmd [static, protected]

Definition at line 82 of file OgreParticleEmitter.h.

EmitterCommands::CmdMaxRepeatDelay Ogre::ParticleEmitter::msMaxRepeatDelayCmd [static, protected]

Definition at line 85 of file OgreParticleEmitter.h.

EmitterCommands::CmdMaxTTL Ogre::ParticleEmitter::msMaxTTLCmd [static, protected]

Definition at line 73 of file OgreParticleEmitter.h.

EmitterCommands::CmdMaxVelocity Ogre::ParticleEmitter::msMaxVelocityCmd [static, protected]

Definition at line 74 of file OgreParticleEmitter.h.

EmitterCommands::CmdMinDuration Ogre::ParticleEmitter::msMinDurationCmd [static, protected]

Definition at line 81 of file OgreParticleEmitter.h.

EmitterCommands::CmdMinRepeatDelay Ogre::ParticleEmitter::msMinRepeatDelayCmd [static, protected]

Definition at line 84 of file OgreParticleEmitter.h.

EmitterCommands::CmdMinTTL Ogre::ParticleEmitter::msMinTTLCmd [static, protected]

Definition at line 75 of file OgreParticleEmitter.h.

EmitterCommands::CmdMinVelocity Ogre::ParticleEmitter::msMinVelocityCmd [static, protected]

Definition at line 76 of file OgreParticleEmitter.h.

EmitterCommands::CmdPosition Ogre::ParticleEmitter::msPositionCmd [static, protected]

Definition at line 77 of file OgreParticleEmitter.h.

EmitterCommands::CmdRepeatDelay Ogre::ParticleEmitter::msRepeatDelayCmd [static, protected]

Definition at line 83 of file OgreParticleEmitter.h.

Real Ogre::ParticleEmitter::mStartTime [protected]

Start time (in seconds from start of first call to ParticleSystem to update).

Definition at line 119 of file OgreParticleEmitter.h.

EmitterCommands::CmdTTL Ogre::ParticleEmitter::msTTLCmd [static, protected]

Definition at line 78 of file OgreParticleEmitter.h.

EmitterCommands::CmdVelocity Ogre::ParticleEmitter::msVelocityCmd [static, protected]

Definition at line 79 of file OgreParticleEmitter.h.

String Ogre::ParticleEmitter::mType [protected]

Name of the type of emitter, MUST be initialised by subclasses.

Definition at line 95 of file OgreParticleEmitter.h.

Vector3 Ogre::ParticleEmitter::mUp [protected]

Definition at line 99 of file OgreParticleEmitter.h.

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

OgreParticleEmitter.h

Ogre::ParticleEmitter Class Reference

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Static Protected Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation