javax.vecmath

Class Vector2d

public class Vector2d extends Tuple2d implements Serializable

A 2 element vector that is represented by single precision floating point x,y coordinates.

Constructor Summary
	Vector2d(double x, double y) Constructs and initializes a Vector2d from the specified xy coordinates.
	Vector2d(double[] v) Constructs and initializes a Vector2d from the specified array.
	Vector2d(Vector2d v1) Constructs and initializes a Vector2d from the specified Vector2d.
	Vector2d(Vector2f v1) Constructs and initializes a Vector2d from the specified Vector2f.
	Vector2d(Tuple2d t1) Constructs and initializes a Vector2d from the specified Tuple2d.
	Vector2d(Tuple2f t1) Constructs and initializes a Vector2d from the specified Tuple2f.
	Vector2d() Constructs and initializes a Vector2d to (0,0).

Method Summary
double	angle(Vector2d v1) Returns the angle in radians between this vector and the vector parameter; the return value is constrained to the range [0,PI].
double	dot(Vector2d v1) Computes the dot product of the this vector and vector v1.
double	length() Returns the length of this vector.
double	lengthSquared() Returns the squared length of this vector.
void	normalize() Normalizes this vector in place.
void	normalize(Vector2d v1) Sets the value of this vector to the normalization of vector v1.

Constructor Detail

Vector2d

public Vector2d(double x, double y)

Constructs and initializes a Vector2d from the specified xy coordinates.

Parameters: x the x coordinate y the y coordinate

Vector2d

public Vector2d(double[] v)

Constructs and initializes a Vector2d from the specified array.

Parameters: v the array of length 2 containing xy in order

Vector2d

public Vector2d(Vector2d v1)

Constructs and initializes a Vector2d from the specified Vector2d.

Parameters: v1 the Vector2d containing the initialization x y data

Vector2d

public Vector2d(Vector2f v1)

Constructs and initializes a Vector2d from the specified Vector2f.

Parameters: v1 the Vector2f containing the initialization x y data

Vector2d

public Vector2d(Tuple2d t1)

Constructs and initializes a Vector2d from the specified Tuple2d.

Parameters: t1 the Tuple2d containing the initialization x y data

Vector2d

public Vector2d(Tuple2f t1)

Constructs and initializes a Vector2d from the specified Tuple2f.

Parameters: t1 the Tuple2f containing the initialization x y data

Vector2d

public Vector2d()

Constructs and initializes a Vector2d to (0,0).

Method Detail

angle

public final double angle(Vector2d v1)

Returns the angle in radians between this vector and the vector parameter; the return value is constrained to the range [0,PI].

Parameters: v1 the other vector

Returns: the angle in radians in the range [0,PI]

dot

public final double dot(Vector2d v1)

Computes the dot product of the this vector and vector v1.

Parameters: v1 the other vector

length

public final double length()

Returns the length of this vector.

Returns: the length of this vector

lengthSquared

public final double lengthSquared()

Returns the squared length of this vector.

Returns: the squared length of this vector

normalize

public final void normalize()

Normalizes this vector in place.

normalize

public final void normalize(Vector2d v1)

Sets the value of this vector to the normalization of vector v1.

Parameters: v1 the un-normalized vector