Package javax.vecmath
Class Vector2d
- java.lang.Object
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- javax.vecmath.Tuple2d
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- javax.vecmath.Vector2d
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- All Implemented Interfaces:
java.io.Serializable
public class Vector2d extends Tuple2d implements java.io.Serializable
A 2 element vector that is represented by single precision floating point x,y coordinates.- See Also:
- Serialized Form
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Constructor Summary
Constructors Constructor Description Vector2d()
Constructs and initializes a Vector2d to (0,0).Vector2d(double[] v)
Constructs and initializes a Vector2d from the specified array.Vector2d(double x, double y)
Constructs and initializes a Vector2d from the specified xy coordinates.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(Vector2d v1)
Constructs and initializes a Vector2d from the specified Vector2d.Vector2d(Vector2f v1)
Constructs and initializes a Vector2d from the specified Vector2f.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description 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.
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Constructor Detail
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Vector2d
public Vector2d(double x, double y)
Constructs and initializes a Vector2d from the specified xy coordinates.- Parameters:
x
- the x coordinatey
- the y coordinate
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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
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Vector2d
public Vector2d(Vector2d v1)
Constructs and initializes a Vector2d from the specified Vector2d.- Parameters:
v1
- the Vector2d containing the initialization x y data
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Vector2d
public Vector2d(Vector2f v1)
Constructs and initializes a Vector2d from the specified Vector2f.- Parameters:
v1
- the Vector2f containing the initialization x y data
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Vector2d
public Vector2d(Tuple2d t1)
Constructs and initializes a Vector2d from the specified Tuple2d.- Parameters:
t1
- the Tuple2d containing the initialization x y data
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Vector2d
public Vector2d(Tuple2f t1)
Constructs and initializes a Vector2d from the specified Tuple2f.- Parameters:
t1
- the Tuple2f containing the initialization x y data
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Vector2d
public Vector2d()
Constructs and initializes a Vector2d to (0,0).
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Method Detail
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dot
public final double dot(Vector2d v1)
Computes the dot product of the this vector and vector v1.- Parameters:
v1
- the other vector
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length
public final double length()
Returns the length of this vector.- Returns:
- the length of this vector
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lengthSquared
public final double lengthSquared()
Returns the squared length of this vector.- Returns:
- the squared length of this vector
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normalize
public final void normalize()
Normalizes this vector in place.
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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
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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]
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