Vector2

java.lang.Object
- org.graphstream.ui.geom.Vector2

All Implemented Interfaces:

java.io.Serializable

Direct Known Subclasses:

Vector3
```
public class Vector2
extends java.lang.Object
implements java.io.Serializable
```
See Also:

Serialized Form

Field Summary

Fields
Modifier and Type Field and Description

double[] data
Sequence of 3 coefficients.

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

All Methods Instance Methods Concrete 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.
`java.lang.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(java.lang.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.
`java.lang.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(java.lang.Object other)
```
    Is this equal to other ?
    
    Overrides:
    
    equals in class java.lang.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 java.lang.Object clone()
```
    Overrides:
    
    clone in class java.lang.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 java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class java.lang.Object

Class Vector2

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

data

Constructor Detail

Vector2

Vector2

Vector2

Vector2

Vector2

Method Detail

isZero

equals

validComponent

at

x

y

clone

dotProduct

dotProduct

length

fill

set

set

add

sub

mult

scalarAdd

scalarSub

scalarMult

scalarDiv

normalize

copy

copy

toString

hashCode