Class Vector

java.lang.Object
  Vector

public class Vector
extends java.lang.Object

Represents a vector in three-dimensional space.

Field Summary

static Vector

ZERO The zero vector, with zero in all components.

Method Summary

Vector	add(Vector other) Returns the sum of this vector and the parameter vector.
static Vector	create(double x, double y, double z) Creates a vector with the given components.
Vector	cross(Vector other) Returns the cross-product of this vector and the parameter vector.
double	dot(Vector other) Returns the dot-product of this vector and the parameter vector.
double	dotPoint(Point other) Returns the dot-product of this vector and the vector from the origin to the parameter point.
double	getLength() Returns the length of this vector.
double	getLengthSquared() Returns the square of the length of this vector.
double	getX() Returns the x-component of this vector.
double	getY() Returns the y-component of this vector.
double	getZ() Returns the z-component of this vector.
Vector	normalize() Returns a vector in the same direction as this one, but whose length is one.
Vector	projectOnto(Vector other) Returns the vector resulting from projecting this vector onto the given vector's direction.
Vector	scale(double scalar) Returns a copy of this vector scaled by the given vector.
Vector	subtract(Vector other) Returns the difference of this vector and the parameter vector.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

ZERO

public static final Vector ZERO

The zero vector, with zero in all components.

Method Detail

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

getX

public double getX()

Returns the x-component of this vector.

getY

public double getY()

Returns the y-component of this vector.

getZ

public double getZ()

Returns the z-component of this vector.

getLengthSquared

public double getLengthSquared()

Returns the square of the length of this vector.

getLength

public double getLength()

Returns the length of this vector.

normalize

public Vector normalize()

Returns a vector in the same direction as this one, but whose length is one.

dot

public double dot(Vector other)

Returns the dot-product of this vector and the parameter vector.

dotPoint

public double dotPoint(Point other)

Returns the dot-product of this vector and the vector from the origin to the parameter point.

cross

public Vector cross(Vector other)

Returns the cross-product of this vector and the parameter vector.

add

public Vector add(Vector other)

Returns the sum of this vector and the parameter vector.

subtract

public Vector subtract(Vector other)

Returns the difference of this vector and the parameter vector.

projectOnto

public Vector projectOnto(Vector other)

Returns the vector resulting from projecting this vector onto the given vector's direction.

scale

public Vector scale(double scalar)

Returns a copy of this vector scaled by the given vector.

create

public static Vector create(double x,
                            double y,
                            double z)

Creates a vector with the given components.