org.graphstream.ui.geom

Class Vector2

java.lang.Object

org.graphstream.ui.geom.Vector2

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

Vector3

public class Vector2
extends Object
implements Serializable

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
double[]	data Sequence of 3 coefficients.

Constructor Summary

Constructors

Constructor and Description
Vector2() New zero vector.
Vector2(double x, double y) New (x,y) vector.
Vector2(Point2 point) New vector copy of point.
Vector2(Point2 from, Point2 to)
Vector2(Vector2 other) New vector copy of other.

Method Summary

Methods

Modifier and Type	Method and Description
void	add(Vector2 other) Add each element of other to the corresponding element of this.
double	at(int i) i-th element.
Object	clone()
void	copy(Point2 point) Make this a copy of point.
void	copy(Vector2 other) Make this a copy of other.
double	dotProduct(double ox, double oy)
double	dotProduct(Vector2 other) Dot product of this and other.
boolean	equals(Object other) Is this equal to other ?
void	fill(double value) Assign value to all elements.
int	hashCode()
boolean	isZero() Are all components to zero?.
double	length() Cartesian length.
void	mult(Vector2 other) Multiply each element of this by the corresponding element of other.
double	normalize() Transform this into an unit vector.
void	scalarAdd(double value) Add value to each element.
void	scalarDiv(double value) Divide each element by value.
void	scalarMult(double value) Multiply each element by value.
void	scalarSub(double value) Substract value to each element.
void	set(double x, double y) Explicitly set the three components.
void	set(int i, double value) Explicitly set the i-th component to value.
void	sub(Vector2 other) Subtract each element of other to the corresponding element of this.
String	toString()
boolean	validComponent(int i) Is i the index of a component ?
double	x()
double	y()

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Field Detail

data

public double[] data

Sequence of 3 coefficients.

Constructor Detail

Vector2

public Vector2()

New zero vector.

Vector2

public Vector2(double x,
       double y)

New (x,y) vector.

Vector2

public Vector2(Vector2 other)

New vector copy of other.

Vector2

public Vector2(Point2 point)

New vector copy of point.

Vector2

public Vector2(Point2 from,
       Point2 to)

Method Detail

isZero

public boolean isZero()

Are all components to zero?.

equals

public boolean equals(Object other)

Is this equal to other ?

Overrides:

equals in class Object

validComponent

public boolean validComponent(int i)

Is i the index of a component ? In other words, is i >= 0 && < than #count() ?

at

public double at(int i)

i-th element.

x

public double x()

y

public double y()

clone

public Object clone()

Overrides:

clone in class Object

dotProduct

public double dotProduct(double ox,
                double oy)

dotProduct

public double dotProduct(Vector2 other)

Dot product of this and other.

length

public double length()

Cartesian length.

fill

public void fill(double value)

Assign value to all elements.

set

public void set(int i,
       double value)

Explicitly set the i-th component to value.

set

public void set(double x,
       double y)

Explicitly set the three components.

add

public void add(Vector2 other)

Add each element of other to the corresponding element of this.

sub

public void sub(Vector2 other)

Subtract each element of other to the corresponding element of this.

mult

public void mult(Vector2 other)

Multiply each element of this by the corresponding element of other.

scalarAdd

public void scalarAdd(double value)

Add value to each element.

scalarSub

public void scalarSub(double value)

Substract value to each element.

scalarMult

public void scalarMult(double value)

Multiply each element by value.

scalarDiv

public void scalarDiv(double value)

Divide each element by value.

normalize

public double normalize()

Transform this into an unit vector.

Returns:

the vector length.

copy

public void copy(Vector2 other)

Make this a copy of other.

copy

public void copy(Point2 point)

Make this a copy of point.

toString

public String toString()

Overrides:

toString in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object