Package eu.iv4xr.framework.spatial

Class Vec3

java.lang.Object

eu.iv4xr.framework.spatial.Vec3

All Implemented Interfaces:

Serializable

public class Vec3
extends Object
implements Serializable

This is a simple 3D vector implementation using floats.

Author:

Naraenda

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
float	x
float	y
float	z

Constructor Summary

Constructors

Constructor	Description
Vec3(float c)	Construct a vector containg the same constant value for each of the components.
Vec3(float x, float y, float z)	Construct a new vector with three floating point values.

Method Summary

Modifier and Type	Method	Description
static Vec3	add(Vec3 a, Vec3 b)
Vec3	copy()	Copies a vector by value.
static Vec3	cross(Vec3 a, Vec3 b)
static float	dist(Vec3 a, Vec3 b)
static float	distSq(Vec3 a, Vec3 b)	If d is the length of the vector a - b (so, the distance between them), this method returns d*d.
static Vec3	div(Vec3 a, float c)
static float	dot(Vec3 a, Vec3 b)
boolean	equals(Object obj)
int	hashCode()
float	length()
float	lengthSq()
static Vec3	mul(Vec3 a, float c)
static Vec3	mul(Vec3 a, Vec3 b)
Vec3	normalized()
static Vec3	one()
static Vec3	sub(Vec3 a, Vec3 b)
String	toString()
static Vec3	zero()

Methods inherited from class java.lang.Object

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

Field Details

x

public float x

y

public float y

z

public float z

Constructor Details

Vec3

public Vec3(float x,
 float y,
 float z)

Construct a new vector with three floating point values.

Parameters:

x - : The 'x' component

y - : The 'y' component

z - : The 'z' component

Vec3

public Vec3(float c)

Construct a vector containg the same constant value for each of the components.

Parameters:

c - : the constant value.

Method Details

copy

public Vec3 copy()

Copies a vector by value.

Returns:

New instance of the current vector.

zero

public static Vec3 zero()

Returns:

Vec3 {0, 0, 0}

one

public static Vec3 one()

Returns:

Vec3 {1, 1, 1}

add

public static Vec3 add(Vec3 a,
 Vec3 b)

Returns:

A + B

sub

public static Vec3 sub(Vec3 a,
 Vec3 b)

Returns:

A - B

mul

public static Vec3 mul(Vec3 a,
 Vec3 b)

Returns:

A * B

mul

public static Vec3 mul(Vec3 a,
 float c)

Parameters:

a - Vector

c - Scalar

Returns:

c * A

div

public static Vec3 div(Vec3 a,
 float c)

Parameters:

a - Vector

c - Scalar

Returns:

(1/c) * A

dot

public static float dot(Vec3 a,
 Vec3 b)

Returns:

A.x * B.x + A.y * B.y + A.z * B.z

dist

public static float dist(Vec3 a,
 Vec3 b)

Returns:

The distance between two vectors a and b. This is the length of the vector a - b.

distSq

public static float distSq(Vec3 a,
 Vec3 b)

If d is the length of the vector a - b (so, the distance between them), this method returns d*d. This is cheaper to compute that d itself.

cross

public static Vec3 cross(Vec3 a,
 Vec3 b)

Returns:

The cross product between two vectors.

lengthSq

public float lengthSq()

Returns:

The squared distance of this vector.

length

public float length()

Returns:

The length of this vector.

normalized

public Vec3 normalized()

Returns:

A normalized copy of this vector.

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object