smithers.algorithms
Class Vector

java.lang.Object
  smithers.algorithms.Vector

public class Vector
extends java.lang.Object

Implements a collection of useful vector related algorithms.

Method Summary

static float[]	difference(float[] vector1, float[] vector2) Computes the difference between two vectors.
static float[]	normalise(float[] vector) Normalises a vector.
static float	scalarProduct(float[] vector1, float[] vector2) Computes the scalar product of two vectors.
static float[]	sum(float[]... vectors) Computes the sum of vectors.
static float	tripleProduct(float[] p, float[] q, float[] r) Calculates the scalar triple product of 3 vectors.
static float[]	vectorProduct(float[] vector1, float[] vector2) Computes the vector product of two vectors.

Methods inherited from class java.lang.Object

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

Method Detail

sum

public static float[] sum(float[]... vectors)

Computes the sum of vectors.

Parameters:

vectors - some vectors

Returns:

the sum of the vectors

difference

public static float[] difference(float[] vector1,
                                 float[] vector2)

Computes the difference between two vectors.

Parameters:

vector1 - a vector

vector2 - another vector

Returns:

vector1 - vector2

scalarProduct

public static float scalarProduct(float[] vector1,
                                  float[] vector2)

Computes the scalar product of two vectors.

Parameters:

vector1 - a vector

vector2 - another vector

Returns:

vector1⋅vector2

vectorProduct

public static float[] vectorProduct(float[] vector1,
                                    float[] vector2)

Computes the vector product of two vectors. The supplied vectors must both have length 3,

Parameters:

vector1 - a vector

vector2 - another vector

Returns:

vector1×vector2

tripleProduct

public static float tripleProduct(float[] p,
                                  float[] q,
                                  float[] r)

Calculates the scalar triple product of 3 vectors.

Parameters:

p - the first vector

q - the second vector

r - the third vector

Returns:

p⋅(p×q)

normalise

public static float[] normalise(float[] vector)

Normalises a vector.

Parameters:

vector - a vector

Returns:

a unit vector parallel to vector