makVrv::DtOsgParticleRibbon Class Reference

A ribbon with some particle system features, such as expansion rate texture, and fading out. More...

Inheritance diagram for makVrv::DtOsgParticleRibbon:

List of all members.

Classes
struct	Particle
	Definition for a particle in the ribbon. More...
Public Member Functions
	DtOsgParticleRibbon (float segmentSpacing, const osg::Vec4 &color, osg::Texture *texture, float expansionRate, float maxLength=2000)
	CTOR.
virtual void	update (double dt, double simTime)
	Override the behavior of the osg ribbon.
virtual void	setAlphaVelocity (float alphaVelocity)
	Set the rate in units/second at which the alpha values of particles change.
virtual void	setTextureRepeat (float textureRepeat)
	Set the number of copies of the texture to repeat into each quad.
Protected Member Functions
virtual	~DtOsgParticleRibbon ()
	DTOR.
virtual void	addParticle (osg::Vec3d const &left, osg::Vec3d const &right, double simTime)
	Add a particle to the ribbon.
virtual float	currentSegmentLength ()
	Find the length of the current ribbon segment.
virtual void	extendCurrentSegment (osg::Vec3d const &left, osg::Vec3d const &right, double simTime)
	Extend the current segment to left and right points.
virtual osg::Drawable *	getDrawable ()
	Create or get the ribbon drawable.
virtual int	particleIndexAtOffset (int offset)
	Get index of particle at offset from current particle.
virtual void	updateParticles (double dt)
	Update the particles with given time change.
virtual void	updateGeometry (double dt)
	Update the geometry with the given time change.
virtual osg::Vec2	getTextureCoordinateFor (int pointIndex, float vScale)
	Get the texture coordinate for a vertex.
virtual osg::Geode *	createGeode ()
	Create the geode to reender the ribbon.
Private Types
typedef std::list< Particle >	Particles
Private Attributes
osg::ref_ptr< osg::Vec3Array >	myPoints
osg::ref_ptr< osg::Vec4Array >	myColors
osg::ref_ptr< osg::Vec2Array >	myTextureCoordinates
osg::ref_ptr< osg::Texture >	myTexture
bool	myWrappingVertices
int	myParticleIndex
float	myTextureRepeat
double	myLastAddTime
Particles	myParticles
float	myAlphaVelocity
float	myExpansionRate
	speed at which alpha decreases
float	myRotationalVelocity
	speed at which particles move apart
double	myLastUpdateTime

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Detailed Description

A ribbon with some particle system features, such as expansion rate texture, and fading out.

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Member Typedef Documentation

typedef std::list<Particle> makVrv::DtOsgParticleRibbon::Particles [private]

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Constructor & Destructor Documentation

makVrv::DtOsgParticleRibbon::DtOsgParticleRibbon	(	float	segmentSpacing,
		const osg::Vec4 &	color,
		osg::Texture *	texture,
		float	expansionRate,
		float	maxLength = 2000
	)

CTOR.

virtual makVrv::DtOsgParticleRibbon::~DtOsgParticleRibbon

(

)

[protected, virtual]

DTOR.

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Member Function Documentation

virtual void makVrv::DtOsgParticleRibbon::update	(	double	dt,
		double	simTime
	)		[virtual]

Override the behavior of the osg ribbon.

Reimplemented from makVrv::DtOsgRibbon.

virtual void makVrv::DtOsgParticleRibbon::setAlphaVelocity

(

float

alphaVelocity

)

[virtual]

Set the rate in units/second at which the alpha values of particles change.

virtual void makVrv::DtOsgParticleRibbon::setTextureRepeat

(

float

textureRepeat

)

[virtual]

Set the number of copies of the texture to repeat into each quad.

Textures are tiled in their v coordinate only.

virtual void makVrv::DtOsgParticleRibbon::addParticle	(	osg::Vec3d const &	left,
		osg::Vec3d const &	right,
		double	simTime
	)		[protected, virtual]

Add a particle to the ribbon.

Implements makVrv::DtOsgRibbon.

virtual float makVrv::DtOsgParticleRibbon::currentSegmentLength

(

)

[protected, virtual]

Find the length of the current ribbon segment.

Implements makVrv::DtOsgRibbon.

virtual void makVrv::DtOsgParticleRibbon::extendCurrentSegment	(	osg::Vec3d const &	left,
		osg::Vec3d const &	right,
		double	simTime
	)		[protected, virtual]

Extend the current segment to left and right points.

Implements makVrv::DtOsgRibbon.

virtual osg::Drawable* makVrv::DtOsgParticleRibbon::getDrawable

(

)

[protected, virtual]

Create or get the ribbon drawable.

Implements makVrv::DtOsgRibbon.

virtual int makVrv::DtOsgParticleRibbon::particleIndexAtOffset

(

int

offset

)

[protected, virtual]

Get index of particle at offset from current particle.

virtual void makVrv::DtOsgParticleRibbon::updateParticles

(

double

dt

)

[protected, virtual]

Update the particles with given time change.

virtual void makVrv::DtOsgParticleRibbon::updateGeometry

(

double

dt

)

[protected, virtual]

Update the geometry with the given time change.

virtual osg::Vec2 makVrv::DtOsgParticleRibbon::getTextureCoordinateFor	(	int	pointIndex,
		float	vScale
	)		[protected, virtual]

Get the texture coordinate for a vertex.

virtual osg::Geode* makVrv::DtOsgParticleRibbon::createGeode

(

)

[protected, virtual]

Create the geode to reender the ribbon.

Reimplemented from makVrv::DtOsgRibbon.

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Member Data Documentation

osg::ref_ptr<osg::Vec3Array> makVrv::DtOsgParticleRibbon::myPoints [private]

osg::ref_ptr<osg::Vec4Array> makVrv::DtOsgParticleRibbon::myColors [private]

osg::ref_ptr<osg::Vec2Array> makVrv::DtOsgParticleRibbon::myTextureCoordinates [private]

osg::ref_ptr<osg::Texture> makVrv::DtOsgParticleRibbon::myTexture [private]

bool makVrv::DtOsgParticleRibbon::myWrappingVertices [private]

int makVrv::DtOsgParticleRibbon::myParticleIndex [private]

float makVrv::DtOsgParticleRibbon::myTextureRepeat [private]

double makVrv::DtOsgParticleRibbon::myLastAddTime [private]

Particles makVrv::DtOsgParticleRibbon::myParticles [private]

float makVrv::DtOsgParticleRibbon::myAlphaVelocity [private]

float makVrv::DtOsgParticleRibbon::myExpansionRate [private]

speed at which alpha decreases

float makVrv::DtOsgParticleRibbon::myRotationalVelocity [private]

speed at which particles move apart

double makVrv::DtOsgParticleRibbon::myLastUpdateTime [private]

Reimplemented from makVrv::DtOsgRibbon.

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

• include/vrvOsg/DtOsgParticleRibbon.h