class OSGPARTICLE_EXPORT osgParticle::ParticleSystem

The heart of this class library; its purpose is to hold a set of particles and manage particle creation, update, rendering and destruction.

Inheritance:

Public Methods

ParticleSystem()

ParticleSystem(const ParticleSystem &copy, const osg::CopyOp &copyop = osg::CopyOp::SHALLOW_COPY)

META_Object(osgParticle, ParticleSystem)

inline Alignment getParticleAlignment() const

Get the alignment type of particles

inline virtual Particle* createParticle(const Particle* ptemplate)

Create a new particle from the specified template (or the default one if ptemplate is null)

inline virtual void destroyParticle(int i)

Destroy the i-th particle

void setDefaultAttributes(const std::string &texturefile = "", bool emissive_particles = true, bool lighting = false, int texture_unit = 0)

A useful method to set the most common StateAttribute's in one call.

virtual void update(double dt)

Update the particles.

inline ParticleSystem::Alignment getParticleAlignment() const

inline void setParticleAlignment(Alignment a)

Set the alignment type of particles

inline const osg::Vec3& getAlignVectorX() const

Get the X-axis alignment vector

inline void setAlignVectorX(const osg::Vec3 &v)

Set the X-axis alignment vector

inline const osg::Vec3& getAlignVectorY() const

Get the Y-axis alignment vector

inline void setAlignVectorY(const osg::Vec3 &v)

Set the Y-axis alignment vector

inline void setAlignVectors(const osg::Vec3 &X, const osg::Vec3 &Y)

Set the alignment vectors

inline bool isFrozen() const

Return true if the particle system is frozen

inline void setFrozen(bool v)

Set or reset the frozen state.

inline const osg::BoundingBox& getDefaultBoundingBox() const

Get the default bounding box

inline void setDefaultBoundingBox(const osg::BoundingBox &bbox)

Set the default bounding box.

inline bool getDoublePassRendering() const

Get the double pass rendering flag

inline void setDoublePassRendering(bool v)

Set the double pass rendering flag.

inline int numParticles() const

Get the number of allocated particles (alive + dead)

inline int numDeadParticles() const

Get the number of dead particles

inline Particle* getParticle(int i)

Get a pointer to the i-th particle

inline const Particle* getParticle(int i) const

Get a const pointer to the i-th particle

inline void destroyParticle(int i)

inline int getLastFrameNumber() const

Get the last frame number

inline const bool computeBound() const

inline void update_bounds(const osg::Vec3 &p, float r)

inline const Particle& getDefaultParticleTemplate() const

Get a reference to the default particle template

inline void setDefaultParticleTemplate(const Particle &p)

Set the default particle template (particle is copied)

inline bool getFreezeOnCull() const

Get whether the particle system can freeze when culled

inline void setFreezeOnCull(bool v)

Set whether the particle system can freeze when culled (default is true)

inline int getLevelOfDetail() const

(EXPERIMENTAL) Get the level of detail

inline void setLevelOfDetail(int v)

(EXPERIMENTAL) Set the level of detail.

inline Particle* createParticle(const Particle* ptemplate)

Public Members

enum Alignment

Protected Methods

virtual ~ParticleSystem()

ParticleSystem& operator=(const ParticleSystem &)

inline virtual const bool computeBound() const

virtual void drawImmediateMode(osg::State &state)

void single_pass_render(osg::State &state, const osg::Matrix &modelview)

Documentation

The heart of this class library; its purpose is to hold a set of particles and manage particle creation, update, rendering and destruction. You can add this drawable to any Geode as you usually do with other Drawable classes. Each instance of ParticleSystem is a separate set of particles; it provides the interface for creating particles and iterating through them (see the Emitter and Program classes).

enum Alignment

BILLBOARD

FIXED

ParticleSystem()

ParticleSystem(const ParticleSystem &copy, const osg::CopyOp &copyop = osg::CopyOp::SHALLOW_COPY)

META_Object(osgParticle, ParticleSystem)

inline Alignment getParticleAlignment() const

Get the alignment type of particles

inline virtual Particle* createParticle(const Particle* ptemplate)

Create a new particle from the specified template (or the default one if ptemplate is null)

inline virtual void destroyParticle(int i)

Destroy the i-th particle

void setDefaultAttributes(const std::string &texturefile = "", bool emissive_particles = true, bool lighting = false, int texture_unit = 0)

A useful method to set the most common StateAttribute's in one call. If texturefile is empty, then texturing is turned off.

virtual void update(double dt)

Update the particles. Don't call this directly, use a ParticleSystemUpdater instead.

virtual ~ParticleSystem()

ParticleSystem& operator=(const ParticleSystem &)

inline virtual const bool computeBound() const

virtual void drawImmediateMode(osg::State &state)

void single_pass_render(osg::State &state, const osg::Matrix &modelview)

inline ParticleSystem::Alignment getParticleAlignment() const

inline void setParticleAlignment(Alignment a)

Set the alignment type of particles

inline const osg::Vec3& getAlignVectorX() const

Get the X-axis alignment vector

inline void setAlignVectorX(const osg::Vec3 &v)

Set the X-axis alignment vector

inline const osg::Vec3& getAlignVectorY() const

Get the Y-axis alignment vector

inline void setAlignVectorY(const osg::Vec3 &v)

Set the Y-axis alignment vector

inline void setAlignVectors(const osg::Vec3 &X, const osg::Vec3 &Y)

Set the alignment vectors

inline bool isFrozen() const

Return true if the particle system is frozen

inline void setFrozen(bool v)

Set or reset the frozen state. When the particle system is frozen, emitters and programs won't do anything on it.

inline const osg::BoundingBox& getDefaultBoundingBox() const

Get the default bounding box

inline void setDefaultBoundingBox(const osg::BoundingBox &bbox)

Set the default bounding box. The default bounding box is used when a real bounding box cannot be computed, for example because no particles has been updated yet.

inline bool getDoublePassRendering() const

Get the double pass rendering flag

inline void setDoublePassRendering(bool v)

Set the double pass rendering flag. Double pass rendering avoids overdraw problems between particle systems and other opaque objects. If you can render all the particle systems after the opaque objects, then double pass is not necessary and can be turned off (best choice). If you set the default attributes with setDefaultAttributes, then the particle system will fall into a transparent bin.

inline int numParticles() const

Get the number of allocated particles (alive + dead)

inline int numDeadParticles() const

Get the number of dead particles

inline Particle* getParticle(int i)

Get a pointer to the i-th particle

inline const Particle* getParticle(int i) const

Get a const pointer to the i-th particle

inline void destroyParticle(int i)

inline int getLastFrameNumber() const

Get the last frame number

inline const bool computeBound() const

inline void update_bounds(const osg::Vec3 &p, float r)

inline const Particle& getDefaultParticleTemplate() const

Get a reference to the default particle template

inline void setDefaultParticleTemplate(const Particle &p)

Set the default particle template (particle is copied)

inline bool getFreezeOnCull() const

Get whether the particle system can freeze when culled

inline void setFreezeOnCull(bool v)

Set whether the particle system can freeze when culled (default is true)

inline int getLevelOfDetail() const

(EXPERIMENTAL) Get the level of detail

inline void setLevelOfDetail(int v)

(EXPERIMENTAL) Set the level of detail. The total number of particles is divided by the detail value to get the actual number of particles to be drawn. This value must be greater than zero.

inline Particle* createParticle(const Particle* ptemplate)

This class has no child classes.

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