ParticleSet2 Class Reference

Core particle set in the plane. More...

#include <particle.h>

Inheritance diagram for ParticleSet2:

Public Member Functions
	ParticleSet2 ()
	Empty constructor.
	ParticleSet2 (const double &)
	Create an empty set of particles.
	ParticleSet2 (const Vector2 &, const double &)
	Create a set of particles.
	ParticleSet2 (const QVector< Vector2 > &, const double &)
	Create a set of particles.
int	Size () const
	Return the number of particles.
Circle2	At (int) const
	Get the k-th particle.
double	Radius () const
	Return the radius of the particles.
QVector< Vector2 >	GetCenters () const
	Return the centers of the particles.
Circle2	GetCircle () const
	Computes the bounding circle of the centers of the particles.
Box2	GetBox () const
	Computes the bounding box of the centers of the particles.
void	Append (const Vector2 &)
	Add a new particle to the set.
bool	Intersect (const Circle2 &) const
	Check the intersection between the cluster and a circle.
bool	Intersect (const Box2 &) const
	Check the intersection between the cluster and a box.
void	Draw (QGraphicsScene &, const QPen &=QPen(QColor(150, 150, 200), 0.025), const QBrush &=QBrush(QColor(200, 200, 250))) const
	Draw the set of particles.

Protected Attributes
QVector< Vector2 >	points
	Set of particles.
double	r = 0.0
	Radius of particles.

Detailed Description

Core particle set in the plane.

The particles have the same radius.

Constructor & Destructor Documentation

ParticleSet2() [1/3]

ParticleSet2::ParticleSet2 ( const double & r )

explicit

Create an empty set of particles.

Parameters

r

Radius.

ParticleSet2() [2/3]

ParticleSet2::ParticleSet2 ( const Vector2 & p, const double & r )

explicit

Create a set of particles.

Parameters

r	Radius.
p	First particle.

ParticleSet2() [3/3]

ParticleSet2::ParticleSet2 ( const QVector< Vector2 > & s, const double & r )

explicit

Create a set of particles.

Parameters

r	Radius.
s	Set of particles.

Member Function Documentation

Append()

void ParticleSet2::Append

(

const Vector2 &

p

)

Add a new particle to the set.

Parameters

p

Point.

At()

Circle2 ParticleSet2::At

(

int

k

)

const

Get the k-th particle.

Parameters

k

Index.

Draw()

void ParticleSet2::Draw	(	QGraphicsScene &	scene,
		const QPen &	pen = QPen(QColor(150, 150, 200), 0.025),
		const QBrush &	brush = QBrush(QColor(200, 200, 250)) ) const

Draw the set of particles.

Parameters

scene	Graphics scene.
pen	The pen.
brush	The brush.

GetBox()

Box2 ParticleSet2::GetBox

(

)

const

Computes the bounding box of the centers of the particles.

See also

GetCircle()

GetCircle()

Circle2 ParticleSet2::GetCircle

(

)

const

Computes the bounding circle of the centers of the particles.

The exact embedding circle can be computed as:

ParticleSet2 particles;
Circle2 c=particles.GetCircle().Extended(particles.Radius());

Intersect() [1/2]

bool ParticleSet2::Intersect

(

const Box2 &

box

)

const

Check the intersection between the cluster and a box.

Parameters

box

The box.

Intersect() [2/2]

bool ParticleSet2::Intersect

(

const Circle2 &

circle

)

const

Check the intersection between the cluster and a circle.

Parameters

circle

The circle.