tig.maths

Class Vector3

java.lang.Object

tig.maths.Vector3

public class Vector3
extends java.lang.Object

Simple representation of a vector in a 3D space, based on doubles.
Represented as 3 doubles.

Field Summary

Fields

Modifier and Type	Field and Description
double	x0 First coordinate of this vector.
double	x1 Second coordinate of this vector.
double	x2 Third coordinate of this vector.

Constructor Summary

Constructors

Constructor and Description
Vector3(double[] coords) Constructor from an array containing 3 doubles.
Vector3(double a0, double a1, double a2) Constructor from 3 doubles.

Method Summary

Modifier and Type	Method and Description
static Vector3	add(Vector3 a, Vector3 b) Returns a Vector3 c such as c = a + b.
static Vector3	doClone(Vector3 a) Returns a copy of a Vector3.
static Vector3	mul(double k, Vector3 a) Multiplication of a vector by a scalar ; returns a vector b such as b = k a.
static Vector3	mul(Matrix3 M, Vector3 a) Multiplication of a vector by a matrix ; returns a vector b such as b = M a.
static Vector3	negate(Vector3 a) Returns a Vector3 b such as b = -a.
static double	norm(Vector3 v) Returns the norm of the vector passed in parameter.
static Vector3	sub(Vector3 a, Vector3 b) Returns a Vector3 c such as c = a - b.
java.lang.String	toString() Returns a String representation of this Vector.

Methods inherited from class java.lang.Object

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

Field Detail

x0

public double x0

First coordinate of this vector.

x1

public double x1

Second coordinate of this vector.

x2

public double x2

Third coordinate of this vector.

Constructor Detail

Vector3

public Vector3(double a0,
               double a1,
               double a2)

Constructor from 3 doubles.

Vector3

public Vector3(double[] coords)

Constructor from an array containing 3 doubles.

Throws:

java.lang.IllegalArgumentException - if coords.length != 3.

Method Detail

toString

public java.lang.String toString()

Returns a String representation of this Vector. The form is : (x0, x1, x2).

Overrides:

toString in class java.lang.Object

norm

public static double norm(Vector3 v)

Returns the norm of the vector passed in parameter.

mul

public static Vector3 mul(Matrix3 M,
                          Vector3 a)

Multiplication of a vector by a matrix ; returns a vector b such as b = M a.

mul

public static Vector3 mul(double k,
                          Vector3 a)

Multiplication of a vector by a scalar ; returns a vector b such as b = k a.

sub

public static Vector3 sub(Vector3 a,
                          Vector3 b)

Returns a Vector3 c such as c = a - b.

add

public static Vector3 add(Vector3 a,
                          Vector3 b)

Returns a Vector3 c such as c = a + b.

negate

public static Vector3 negate(Vector3 a)

Returns a Vector3 b such as b = -a.

doClone

public static Vector3 doClone(Vector3 a)

Returns a copy of a Vector3.