Ogre::ParticleAffector Class Reference

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

#include <OgreParticleAffector.h>

Inheritance diagram for Ogre::ParticleAffector:

Public Member Functions
	ParticleAffector (ParticleSystem *parent)
virtual	~ParticleAffector ()
	Virtual destructor essential. More...
virtual void	_affectParticles (ParticleSystem *pSystem, Real timeElapsed)=0
	Method called to allow the affector to 'do it's stuff' on all active particles in the system. More...
virtual void	_initParticle (Particle *pParticle)
	Method called to allow the affector to initialize all newly created particles in the system. More...
void	copyParametersTo (StringInterface *dest) const
	Method for copying this object's parameters to another object. More...
ParamDictionary *	getParamDictionary (void)
	Retrieves the parameter dictionary for this class. More...
const ParamDictionary *	getParamDictionary (void) const
String	getParameter (const String &name) const
	Generic parameter retrieval method. More...
const ParameterList &	getParameters (void) const
	Retrieves a list of parameters valid for this object. More...
const String &	getType (void) const
	Returns the name of the type of affector. More...
bool	setParameter (const String &name, const String &value)
	Generic parameter setting method. More...
void	setParameterList (const NameValuePairList &paramList)
	Generic multiple parameter setting method. More...

Static Public Member Functions
static 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. More...

Detailed Description

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

Remarks

Particle affectors modify particles in a particle system over their lifetime. They can be grouped into types, e.g. 'vector force' affectors, 'fader' affectors etc; each type will modify particles in a different way, using different parameters.

Because there are so many types of affectors 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 affector types available. This is done by subclassing ParticleAffector to have the appropriate emission behaviour you want, and also creating a subclass of ParticleAffectorFactory which is responsible for creating instances of your new affector type. You register this factory with the ParticleSystemManager using addAffectorFactory, and from then on affectors of this type can be created either from code or through text particle scripts by naming the type.

This same approach is used for ParticleEmitters (which are the source of particles in a system). This means that OGRE is particularly flexible when it comes to creating particle system effects, with literally infinite combinations of affector and affector types, and parameters within those types.

Constructor & Destructor Documentation

ParticleAffector()

Ogre::ParticleAffector::ParticleAffector ( ParticleSystem *  parent )

inline

~ParticleAffector()

virtual Ogre::ParticleAffector::~ParticleAffector ( )

virtual

Virtual destructor essential.

Member Function Documentation

_initParticle()

virtual void Ogre::ParticleAffector::_initParticle ( Particle *  pParticle )

inlinevirtual

Method called to allow the affector to initialize all newly created particles in the system.

Remarks

This is where the affector gets the chance to initialize it's effects to the particles of a system. The affector is expected to initialize some or all of the particles in the system passed to it, depending on the affector's approach.

Parameters

pParticle

Pointer to a Particle to initialize.

Reimplemented in Ogre::RotationAffector, and Ogre::ColourImageAffector.

_affectParticles()

virtual void Ogre::ParticleAffector::_affectParticles ( ParticleSystem *  pSystem, Real  timeElapsed  )

pure virtual

Method called to allow the affector to 'do it's stuff' on all active particles in the system.

Remarks

This is where the affector gets the chance to apply it's effects to the particles of a system. The affector is expected to apply it's effect to some or all of the particles in the system passed to it, depending on the affector's approach.

Parameters

pSystem	Pointer to a ParticleSystem to affect.
timeElapsed	The number of seconds which have elapsed since the last call.

Implemented in Ogre::ColourFaderAffector2, Ogre::RotationAffector, Ogre::ColourFaderAffector, Ogre::LinearForceAffector, Ogre::DirectionRandomiserAffector, Ogre::DeflectorPlaneAffector, Ogre::ColourInterpolatorAffector, Ogre::ScaleAffector, and Ogre::ColourImageAffector.

getType()

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

inline

Returns the name of the type of affector.

Remarks

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

getParamDictionary() [1/2]

ParamDictionary* Ogre::StringInterface::getParamDictionary ( void  )

inlineinherited

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.

getParamDictionary() [2/2]

const ParamDictionary* Ogre::StringInterface::getParamDictionary ( void  ) const

inlineinherited

getParameters()

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.

setParameter()

bool Ogre::StringInterface::setParameter ( const String &  name, const String &  value  )

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().

setParameterList()

void Ogre::StringInterface::setParameterList ( const NameValuePairList &  paramList )

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

getParameter()

String Ogre::StringInterface::getParameter ( const String &  name ) const

inlineinherited

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

References Ogre::ParamCommand::doGet().

copyParametersTo()

void Ogre::StringInterface::copyParametersTo ( StringInterface *  dest ) const

inlineinherited

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.

References Ogre::StringInterface::setParameter().

cleanupDictionary()

static void Ogre::StringInterface::cleanupDictionary ( )

staticinherited

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.

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

• OgreParticleAffector.h