org.lwjgl.util.vector
Class Vector2f

java.lang.Object
  org.lwjgl.util.vector.Vector
      org.lwjgl.util.vector.Vector2f

All Implemented Interfaces:

java.io.Serializable, ReadableVector, ReadableVector2f, WritableVector2f

public class Vector2f
extends Vector
implements java.io.Serializable, ReadableVector2f, WritableVector2f

Holds a 2-tuple vector.

Version:

$Revision: 3418 $ $Id: Vector2f.java 3418 2010-09-28 21:11:35Z spasi $

Author:

cix_foo

See Also:

Serialized Form

Field Summary

float	x
float	y

Constructor Summary

Vector2f()
Constructor for Vector3f.

Vector2f(float x, float y)
Constructor

Vector2f(ReadableVector2f src)
Constructor

Method Summary

static Vector2f	add(Vector2f left, Vector2f right, Vector2f dest) Add a vector to another vector and place the result in a destination vector.
static float	angle(Vector2f a, Vector2f b) Calculate the angle between two vectors, in radians
static float	dot(Vector2f left, Vector2f right) The dot product of two vectors is calculated as v1.x * v2.x + v1.y * v2.y + v1.z * v2.z
float	getX()
float	getY()
float	lengthSquared()
Vector	load(java.nio.FloatBuffer buf) Load this vector from a FloatBuffer
Vector	negate() Negate a vector
Vector2f	negate(Vector2f dest) Negate a vector and place the result in a destination vector.
Vector2f	normalise(Vector2f dest) Normalise this vector and place the result in another vector.
Vector	scale(float scale) Scale this vector
void	set(float x, float y) Set the X,Y values
Vector2f	set(ReadableVector2f src) Load from another Vector2f
void	setX(float x) Set X
void	setY(float y) Set Y
Vector	store(java.nio.FloatBuffer buf) Store this vector in a FloatBuffer
static Vector2f	sub(Vector2f left, Vector2f right, Vector2f dest) Subtract a vector from another vector and place the result in a destination vector.
java.lang.String	toString()
Vector2f	translate(float x, float y) Translate a vector

Methods inherited from class org.lwjgl.util.vector.Vector

length, normalise

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.lwjgl.util.vector.ReadableVector

length

Field Detail

x

public float x

y

public float y

Constructor Detail

Vector2f

public Vector2f()

Constructor for Vector3f.

Vector2f

public Vector2f(ReadableVector2f src)

Constructor

Vector2f

public Vector2f(float x,
                float y)

Constructor

Method Detail

set

public void set(float x,
                float y)

Description copied from interface: WritableVector2f

Set the X,Y values

Specified by:

set in interface WritableVector2f

set

public Vector2f set(ReadableVector2f src)

Load from another Vector2f

Parameters:

src - The source vector

Returns:

this

lengthSquared

public float lengthSquared()

Specified by:

lengthSquared in interface ReadableVector

Specified by:

lengthSquared in class Vector

Returns:

the length squared of the vector

translate

public Vector2f translate(float x,
                          float y)

Translate a vector

Parameters:

x - The translation in x

y - the translation in y

Returns:

this

negate

public Vector negate()

Negate a vector

Specified by:

negate in class Vector

Returns:

this

negate

public Vector2f negate(Vector2f dest)

Negate a vector and place the result in a destination vector.

Parameters:

dest - The destination vector or null if a new vector is to be created

Returns:

the negated vector

normalise

public Vector2f normalise(Vector2f dest)

Normalise this vector and place the result in another vector.

Parameters:

dest - The destination vector, or null if a new vector is to be created

Returns:

the normalised vector

dot

public static float dot(Vector2f left,
                        Vector2f right)

The dot product of two vectors is calculated as v1.x * v2.x + v1.y * v2.y + v1.z * v2.z

Parameters:

left - The LHS vector

right - The RHS vector

Returns:

left dot right

angle

public static float angle(Vector2f a,
                          Vector2f b)

Calculate the angle between two vectors, in radians

Parameters:

a - A vector

b - The other vector

Returns:

the angle between the two vectors, in radians

add

public static Vector2f add(Vector2f left,
                           Vector2f right,
                           Vector2f dest)

Add a vector to another vector and place the result in a destination vector.

Parameters:

left - The LHS vector

right - The RHS vector

dest - The destination vector, or null if a new vector is to be created

Returns:

the sum of left and right in dest

sub

public static Vector2f sub(Vector2f left,
                           Vector2f right,
                           Vector2f dest)

Subtract a vector from another vector and place the result in a destination vector.

Parameters:

left - The LHS vector

right - The RHS vector

dest - The destination vector, or null if a new vector is to be created

Returns:

left minus right in dest

store

public Vector store(java.nio.FloatBuffer buf)

Store this vector in a FloatBuffer

Specified by:

store in interface ReadableVector

Specified by:

store in class Vector

Parameters:

buf - The buffer to store it in, at the current position

Returns:

this

load

public Vector load(java.nio.FloatBuffer buf)

Load this vector from a FloatBuffer

Specified by:

load in class Vector

Parameters:

buf - The buffer to load it from, at the current position

Returns:

this

scale

public Vector scale(float scale)

Description copied from class: Vector

Scale this vector

Specified by:

scale in class Vector

Parameters:

scale - The scale factor

Returns:

this

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

getX

public final float getX()

Specified by:

getX in interface ReadableVector2f

Returns:

x

getY

public final float getY()

Specified by:

getY in interface ReadableVector2f

Returns:

y

setX

public final void setX(float x)

Set X

Specified by:

setX in interface WritableVector2f

Parameters:

x -

setY

public final void setY(float y)

Set Y

Specified by:

setY in interface WritableVector2f

Parameters:

y -