javax.vecmath
Class Vector4d

java.lang.Object
  javax.vecmath.Tuple4d
      javax.vecmath.Vector4d

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable

public class Vector4d
extends Tuple4d
implements java.io.Serializable

A 4 element vector that is represented by double precision floating point x,y,z,w coordinates.

Author:

Kenji hiranabe

See Also:

Serialized Form

Field Summary

Fields inherited from class javax.vecmath.Tuple4d

w, x, y, z

Constructor Summary

Vector4d()
Constructs and initializes a Vector4d to (0,0,0,0).

Vector4d(double[] v)
Constructs and initializes a Vector4d from the specified array of length 4.

Vector4d(double x, double y, double z, double w)
Constructs and initializes a Vector4d from the specified xyzw coordinates.

Vector4d(Tuple3d t1)
Constructs and initializes a Vector4d from the specified Tuple3d.

Vector4d(Tuple4d t1)
Constructs and initializes a Vector4d from the specified Tuple4d.

Vector4d(Tuple4f t1)
Constructs and initializes a Vector4d from the specified Tuple4f.

Vector4d(Vector4d v1)
Constructs and initializes a Vector4d from the specified Vector4d.

Vector4d(Vector4f v1)
Constructs and initializes a Vector4d from the specified Vector4d.

Method Summary

double	angle(Vector4d v1) Returns the (4-space) angle in radians between this vector and the vector parameter; the return value is constrained to the range [0,PI].
java.lang.Object	clone()
double	dot(Vector4d 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(Vector4d v1) Sets the value of this vector to the normalization of vector v1.
void	set(Tuple3d t1) Sets the x,y,z components of this point to the corresponding components of tuple t1.

Methods inherited from class javax.vecmath.Tuple4d

absolute, absolute, add, add, clamp, clamp, clampMax, clampMax, clampMin, clampMin, epsilonEquals, equals, equals, get, get, hashCode, interpolate, interpolate, negate, negate, scale, scale, scaleAdd, scaleAdd, set, set, set, set, sub, sub, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Vector4d

public Vector4d()

Constructs and initializes a Vector4d to (0,0,0,0).

Vector4d

public Vector4d(double[] v)

Constructs and initializes a Vector4d from the specified array of length 4.

Parameters:

v - the array of length 4 containing xyzw in order

Vector4d

public Vector4d(double x,
                double y,
                double z,
                double w)

Constructs and initializes a Vector4d from the specified xyzw coordinates.

Parameters:

x - the x coordinate

y - the y coordinate

z - the z coordinate

w - the w coordinate

Vector4d

public Vector4d(Tuple3d t1)

Constructs and initializes a Vector4d from the specified Tuple3d. The x,y,z components of this point are set to the corresponding components of tuple t1. The w component of this point is set to 0.

Parameters:

t1 - the tuple to be copied

Since:

Java3D 1.2

Vector4d

public Vector4d(Tuple4d t1)

Constructs and initializes a Vector4d from the specified Tuple4d.

Parameters:

t1 - the Tuple4d containing the initialization x y z w data

Vector4d

public Vector4d(Tuple4f t1)

Constructs and initializes a Vector4d from the specified Tuple4f.

Parameters:

t1 - the Tuple4f containing the initialization x y z w data

Vector4d

public Vector4d(Vector4d v1)

Constructs and initializes a Vector4d from the specified Vector4d.

Parameters:

v1 - the Vector4d containing the initialization x y z w data

Vector4d

public Vector4d(Vector4f v1)

Constructs and initializes a Vector4d from the specified Vector4d.

Parameters:

v1 - the Vector4d containing the initialization x y z w data

Method Detail

angle

public final double angle(Vector4d v1)

Returns the (4-space) 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]

clone

public java.lang.Object clone()

Specified by:

clone in class Tuple4d

dot

public final double dot(Vector4d v1)

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

Parameters:

v1 - the other vector

Returns:

the dot product of this vector and vector v1

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(Vector4d v1)

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

Parameters:

v1 - the un-normalized vector

set

public final void set(Tuple3d t1)

Sets the x,y,z components of this point to the corresponding components of tuple t1. The w component of this point is set to 1.

Parameters:

t1 - the tuple to be copied

Since:

Java3D 1.2