zombie.iso
Class Vector2

java.lang.Object
  zombie.iso.Vector2

All Implemented Interfaces:

java.lang.Cloneable

public class Vector2
extends java.lang.Object
implements java.lang.Cloneable

Author:

LEMMY

Field Summary

float	x The horizontal part of this vector
float	y The vertical part of this vector

Constructor Summary

Vector2()
Create a new vector with zero length

Vector2(float x, float y)
Create a new vector with specified horizontal and vertical parts

Vector2(Vector2 other)
Create a new vector which is identical to another vector

Method Summary

Vector2	add(Vector2 other) Add another vector to this one and return as a new vector
Vector2	addToThis(Vector2 other) Add another vector to this one and store the result in this one
Vector2	aimAt(Vector2 other) Set the direction of this vector to point to another vector, maintaining the length
float	angleTo(Vector2 other) Calculate the angle between this point and another
Vector2	clone() Clone this vector
float	distanceTo(Vector2 other) Calculate the distance between this point and another
static float	dot(float x, float y, float tx, float ty)
float	dot(Vector2 other)
boolean	equals(java.lang.Object other) See if this vector is equal to another
static Vector2	fromAwtPoint(java.awt.Point p) Create a new vector from an AWT Point
static Vector2	fromLengthDirection(float length, float direction) Create a new vector with a specified length and direction
float	getDirection() get the direction in which this vector is pointing Note: if the length of this vector is 0, then the direction will also be 0
float	getLength() get the length of this vector
float	getX()
float	getY()
void	normalize()
void	rotate(float rad)
Vector2	set(float x, float y) Set the horizontal and vertical parts of this vector
Vector2	set(Vector2 other) Make this vector identical to another vector
Vector2	setDirection(float direction) Set the direction of this vector, maintaining the length
Vector2	setLength(float length) Set the length of this vector, maintaining the direction
Vector2	setLengthAndDirection(float direction, float length) Set the length and direction of this vector
void	setX(float x)
void	setY(float y)
java.awt.Dimension	toAwtDimension() Convert this vector to an AWT Dimension
java.awt.Point	toAwtPoint() Convert this vector to an AWT Point
java.lang.String	toString() Returns a string representing this vector

Methods inherited from class java.lang.Object

getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

x

public float x

The horizontal part of this vector

y

public float y

The vertical part of this vector

Constructor Detail

Vector2

public Vector2()

Create a new vector with zero length

Vector2

public Vector2(Vector2 other)

Create a new vector which is identical to another vector

Parameters:

other - The Vector2 to copy

Vector2

public Vector2(float x,
               float y)

Create a new vector with specified horizontal and vertical parts

Parameters:

x - The horizontal part

y - The vertical part

Method Detail

rotate

public void rotate(float rad)

fromAwtPoint

public static Vector2 fromAwtPoint(java.awt.Point p)

Create a new vector from an AWT Point

Parameters:

p - The java.awt.Point to convert

Returns:

A new Vector2 representing the Point

fromLengthDirection

public static Vector2 fromLengthDirection(float length,
                                          float direction)

Create a new vector with a specified length and direction

Parameters:

direction - The direction of the new vector, in radians

length - The length of the new vector

Returns:

add

public Vector2 add(Vector2 other)

Add another vector to this one and return as a new vector

Parameters:

other - The other Vector2 to add to this one

Returns:

The result as new Vector2

addToThis

public Vector2 addToThis(Vector2 other)

Add another vector to this one and store the result in this one

Parameters:

other - The other Vector2 to add to this one

Returns:

This vector, with the other vector added

aimAt

public Vector2 aimAt(Vector2 other)

Set the direction of this vector to point to another vector, maintaining the length

Parameters:

other - The Vector2 to point this one at.

angleTo

public float angleTo(Vector2 other)

Calculate the angle between this point and another

Parameters:

other - The second point as vector

Returns:

The angle between them, in radians

clone

public Vector2 clone()

Clone this vector

Overrides:

clone in class java.lang.Object

distanceTo

public float distanceTo(Vector2 other)

Calculate the distance between this point and another

Parameters:

other - The second point as vector

Returns:

The distance between them

dot

public float dot(Vector2 other)

dot

public static float dot(float x,
                        float y,
                        float tx,
                        float ty)

equals

public boolean equals(java.lang.Object other)

See if this vector is equal to another

Overrides:

equals in class java.lang.Object

Parameters:

other - A Vector2 to compare this one to

Returns:

true if other is a Vector2 equal to this one

getDirection

public float getDirection()

get the direction in which this vector is pointing
Note: if the length of this vector is 0, then the direction will also be 0

Returns:

The direction in which this vector is pointing in radians

getLength

public float getLength()

get the length of this vector

Returns:

The length of this vector

normalize

public void normalize()

set

public Vector2 set(Vector2 other)

Make this vector identical to another vector

Parameters:

other - The Vector2 to copy

set

public Vector2 set(float x,
                   float y)

Set the horizontal and vertical parts of this vector

Parameters:

x - The horizontal part

y - The vertical part

setDirection

public Vector2 setDirection(float direction)

Set the direction of this vector, maintaining the length

Parameters:

direction - The new direction of this vector, in radians

setLength

public Vector2 setLength(float length)

Set the length of this vector, maintaining the direction

Parameters:

length - The length of this vector

setLengthAndDirection

public Vector2 setLengthAndDirection(float direction,
                                     float length)

Set the length and direction of this vector

Parameters:

direction - The direction of this vector, in radians

length - The length of this vector

toAwtDimension

public java.awt.Dimension toAwtDimension()

Convert this vector to an AWT Dimension

Returns:

a java.awt.Dimension

toAwtPoint

public java.awt.Point toAwtPoint()

Convert this vector to an AWT Point

Returns:

a java.awt.Point

toString

public java.lang.String toString()

Returns a string representing this vector

Overrides:

toString in class java.lang.Object

Returns:

A String representing this vector

getX

public float getX()

Returns:

the x

setX

public void setX(float x)

Parameters:

x - the x to set

getY

public float getY()

Returns:

the y

setY

public void setY(float y)

Parameters:

y - the y to set