Basic 2-D particle system solver. More...

#include <jet/particle_system_solver2.h>

Inheritance diagram for jet::ParticleSystemSolver2:

Classes
class	Builder
	Front-end to create ParticleSystemSolver2 objects step by step. More...

Public Member Functions
	ParticleSystemSolver2 ()
	Constructs an empty solver. More...

	ParticleSystemSolver2 (double radius, double mass)
	Constructs a solver with particle parameters. More...

virtual	~ParticleSystemSolver2 ()
	Destructor. More...

double	dragCoefficient () const
	Returns the drag coefficient. More...

void	setDragCoefficient (double newDragCoefficient)
	Sets the drag coefficient. More...

double	restitutionCoefficient () const
	Sets the restitution coefficient. More...

void	setRestitutionCoefficient (double newRestitutionCoefficient)
	Sets the restitution coefficient. More...

const Vector2D &	gravity () const
	Returns the gravity. More...

void	setGravity (const Vector2D &newGravity)
	Sets the gravity. More...

const ParticleSystemData2Ptr &	particleSystemData () const
	Returns the particle system data. More...

const Collider2Ptr &	collider () const
	Returns the collider. More...

void	setCollider (const Collider2Ptr &newCollider)
	Sets the collider. More...

const ParticleEmitter2Ptr &	emitter () const
	Returns the emitter. More...

void	setEmitter (const ParticleEmitter2Ptr &newEmitter)
	Sets the emitter. More...

const VectorField2Ptr &	wind () const
	Returns the wind field. More...

void	setWind (const VectorField2Ptr &newWind)
	Sets the wind. More...

Public Member Functions inherited from jet::PhysicsAnimation
	PhysicsAnimation ()
	Default constructor. More...

virtual	~PhysicsAnimation ()
	Destructor. More...

bool	isUsingFixedSubTimeSteps () const
	Returns true if fixed sub-timestepping is used. More...

void	setIsUsingFixedSubTimeSteps (bool isUsing)
	Sets true if fixed sub-timestepping is used. More...

unsigned int	numberOfFixedSubTimeSteps () const
	Returns the number of fixed sub-timesteps. More...

void	setNumberOfFixedSubTimeSteps (unsigned int numberOfSteps)
	Sets the number of fixed sub-timesteps. More...

void	advanceSingleFrame ()
	Advances a single frame. More...

Frame	currentFrame () const
	Returns current frame. More...

void	setCurrentFrame (const Frame &frame)
	Sets current frame cursor (but do not invoke update()). More...

double	currentTimeInSeconds () const
	Returns current time in seconds. More...

Public Member Functions inherited from jet::Animation
	Animation ()

virtual	~Animation ()

void	update (const Frame &frame)
	Updates animation state for given `frame`. More...

Static Public Member Functions
static Builder	builder ()
	Returns builder fox ParticleSystemSolver2. More...

Protected Member Functions
void	onInitialize () override
	Initializes the simulator. More...

void	onAdvanceTimeStep (double timeStepInSeconds) override
	Called to advane a single time-step. More...

virtual void	accumulateForces (double timeStepInSeconds)
	Accumulates forces applied to the particles. More...

virtual void	onBeginAdvanceTimeStep (double timeStepInSeconds)
	Called when a time-step is about to begin. More...

virtual void	onEndAdvanceTimeStep (double timeStepInSeconds)
	Called after a time-step is completed. More...

void	resolveCollision ()
	Resolves any collisions occured by the particles. More...

void	resolveCollision (ArrayAccessor1< Vector2D > newPositions, ArrayAccessor1< Vector2D > newVelocities)

void	setParticleSystemData (const ParticleSystemData2Ptr &newParticles)
	Assign a new particle system data. More...

Protected Member Functions inherited from jet::PhysicsAnimation
virtual unsigned int	numberOfSubTimeSteps (double timeIntervalInSeconds) const
	Returns the required number of sub-timesteps for given time interval. More...

Detailed Description

Basic 2-D particle system solver.

This class implements basic particle system solver. It includes gravity, air drag, and collision. But it does not compute particle-to-particle interaction. Thus, this solver is suitable for performing simple spray-like simulations with low computational cost. This class can be further extend to add more sophisticated simulations, such as SPH, to handle particle-to-particle intersection.

See also: SphSolver2

Constructor & Destructor Documentation

◆ ParticleSystemSolver2() [1/2]

jet::ParticleSystemSolver2::ParticleSystemSolver2 ( )

Constructs an empty solver.

◆ ParticleSystemSolver2() [2/2]

jet::ParticleSystemSolver2::ParticleSystemSolver2	(	double	radius,
		double	mass
	)

Constructs a solver with particle parameters.

◆ ~ParticleSystemSolver2()

virtual jet::ParticleSystemSolver2::~ParticleSystemSolver2 ( )

virtual

Destructor.

Member Function Documentation

◆ accumulateForces()

virtual void jet::ParticleSystemSolver2::accumulateForces ( double timeStepInSeconds )

protectedvirtual

Accumulates forces applied to the particles.

Reimplemented in jet::SphSolver2.

◆ builder()

static Builder jet::ParticleSystemSolver2::builder ( )

static

Returns builder fox ParticleSystemSolver2.

◆ collider()

const Collider2Ptr& jet::ParticleSystemSolver2::collider ( ) const

Returns the collider.

◆ dragCoefficient()

double jet::ParticleSystemSolver2::dragCoefficient ( ) const

Returns the drag coefficient.

◆ emitter()

const ParticleEmitter2Ptr& jet::ParticleSystemSolver2::emitter ( ) const

Returns the emitter.

◆ gravity()

const Vector2D& jet::ParticleSystemSolver2::gravity ( ) const

Returns the gravity.

◆ onAdvanceTimeStep()

void jet::ParticleSystemSolver2::onAdvanceTimeStep ( double timeStepInSeconds )

overrideprotectedvirtual

Called to advane a single time-step.

Implements jet::PhysicsAnimation.

◆ onBeginAdvanceTimeStep()

virtual void jet::ParticleSystemSolver2::onBeginAdvanceTimeStep ( double timeStepInSeconds )

protectedvirtual

Called when a time-step is about to begin.

Reimplemented in jet::SphSolver2, and jet::PciSphSolver2.

◆ onEndAdvanceTimeStep()

virtual void jet::ParticleSystemSolver2::onEndAdvanceTimeStep ( double timeStepInSeconds )

protectedvirtual

Called after a time-step is completed.

Reimplemented in jet::SphSolver2.

◆ onInitialize()

void jet::ParticleSystemSolver2::onInitialize ( )

overrideprotectedvirtual

Initializes the simulator.

Reimplemented from jet::PhysicsAnimation.

◆ particleSystemData()

const ParticleSystemData2Ptr& jet::ParticleSystemSolver2::particleSystemData ( ) const

Returns the particle system data.

This function returns the particle system data. The data is created when this solver is constructed and also owned by the solver.

Returns: The particle system data.

◆ resolveCollision() [1/2]

void jet::ParticleSystemSolver2::resolveCollision ( )

protected

Resolves any collisions occured by the particles.

◆ resolveCollision() [2/2]

void jet::ParticleSystemSolver2::resolveCollision	(	ArrayAccessor1< Vector2D >	newPositions,
		ArrayAccessor1< Vector2D >	newVelocities
	)

protected

Resolves any collisions occured by the particles where the particle state is given by the position and velocity arrays.

◆ restitutionCoefficient()

double jet::ParticleSystemSolver2::restitutionCoefficient ( ) const

Sets the restitution coefficient.

◆ setCollider()

void jet::ParticleSystemSolver2::setCollider ( const Collider2Ptr & newCollider )

Sets the collider.

◆ setDragCoefficient()

void jet::ParticleSystemSolver2::setDragCoefficient ( double newDragCoefficient )

Sets the drag coefficient.

The drag coefficient controls the amount of air-drag. The coefficient should be a positive number and 0 means no drag force.

Parameters

[in] newDragCoefficient The new drag coefficient.

◆ setEmitter()

void jet::ParticleSystemSolver2::setEmitter ( const ParticleEmitter2Ptr & newEmitter )

Sets the emitter.

◆ setGravity()

void jet::ParticleSystemSolver2::setGravity ( const Vector2D & newGravity )

Sets the gravity.

◆ setParticleSystemData()

void jet::ParticleSystemSolver2::setParticleSystemData ( const ParticleSystemData2Ptr & newParticles )

protected

Assign a new particle system data.

◆ setRestitutionCoefficient()

void jet::ParticleSystemSolver2::setRestitutionCoefficient ( double newRestitutionCoefficient )

Sets the restitution coefficient.

The restitution coefficient controls the bouncy-ness of a particle when it hits a collider surface. The range of the coefficient should be 0 to 1 – 0 means no bounce back and 1 means perfect reflection.

Parameters

[in] newRestitutionCoefficient The new restitution coefficient.

◆ setWind()

void jet::ParticleSystemSolver2::setWind ( const VectorField2Ptr & newWind )

Sets the wind.

Wind can be applied to the particle system by setting a vector field to the solver.

Parameters

[in] newWind The new wind.

◆ wind()

const VectorField2Ptr& jet::ParticleSystemSolver2::wind ( ) const

Returns the wind field.

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

jet/particle_system_solver2.h

Classes

Public Member Functions

Static Public Member Functions

Protected Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ ParticleSystemSolver2() [1/2]

◆ ParticleSystemSolver2() [2/2]

◆ ~ParticleSystemSolver2()

Member Function Documentation

◆ accumulateForces()

◆ builder()

◆ collider()

◆ dragCoefficient()

◆ emitter()

◆ gravity()

◆ onAdvanceTimeStep()

◆ onBeginAdvanceTimeStep()

◆ onEndAdvanceTimeStep()

◆ onInitialize()

◆ particleSystemData()

◆ resolveCollision() [1/2]

◆ resolveCollision() [2/2]

◆ restitutionCoefficient()

◆ setCollider()

◆ setDragCoefficient()

◆ setEmitter()

◆ setGravity()

◆ setParticleSystemData()

◆ setRestitutionCoefficient()

◆ setWind()

◆ wind()