Package org.deepjava.runtime.util

Class Vector

java.lang.Object

org.deepjava.runtime.util.Matrix

org.deepjava.runtime.util.Vector

Direct Known Subclasses:

Vector3, Vector4

public class Vector
extends Matrix

This class implements a n-dimensional vector.

Field Summary

Fields inherited from class org.deepjava.runtime.util.Matrix

columns, rows, value

Constructor Summary

Constructors

Constructor	Description
Vector(int n)	Creates a new Vector with n dimensions.
Vector(int n, boolean row)	Creates a new Vector with n dimensions.

Method Summary

Modifier and Type	Method	Description
boolean	add(Vector left, Vector right, boolean ignoreOrientation)	Adds two vectors and stores the result in this instance.
double	dot(Vector right)	Calculates the dot products of a vector with this instance.
double	get(int i)	Read an entry in a Vector.
int	getSize()	Returns the size of a Vector.
boolean	set(int i, double value)	Set one element in a Vector.

Methods inherited from class org.deepjava.runtime.util.Matrix

add, clone, copy, get, getColumnCount, getRowCount, isEqual, multiply, print, rot3x, rot3x, set, transpose, transpose

Methods inherited from class java.lang.Object

equals, getClass, hashCode, toString

Constructor Detail

Vector

public Vector(int n,
              boolean row)

Creates a new Vector with n dimensions. Each entry is of type double.

Parameters:

n - Dimension

row - true: vector has n rows and one column, false: vector has n columns and one row.

Vector

public Vector(int n)

Creates a new Vector with n dimensions. The Vector has one row and n columns.

Parameters:

n - Dimension

Method Detail

getSize

public int getSize()

Returns the size of a Vector.

Returns:

Dimension of the Vector.

set

public boolean set(int i,
                   double value)

Set one element in a Vector.

Parameters:

i - Element number (1..n)

value - Value to set

Returns:

false if specified position is not within the vector.

get

public double get(int i)

Read an entry in a Vector. Returns Double.NaN if specified position is not within the Vector.

Parameters:

i - Element number (1..n)

Returns:

Entry at i or Double.NaN if specified position is not within the vector.

add

public boolean add(Vector left,
                   Vector right,
                   boolean ignoreOrientation)

Adds two vectors and stores the result in this instance. Returns false if the dimensions of the involved vectors do not fit.

Parameters:

left - First input vector

right - Second input vector

ignoreOrientation - If true the orientation (row vector - column vector) is not checked

Returns:

false if dimensions of the involved vectors do not fit.

dot

public double dot(Vector right)

Calculates the dot products of a vector with this instance. Returns Double.NaN if the dimensions of the involved vectors do not fit.

Parameters:

right - Input vector

Returns:

Dot product or Double.NaN if dimensions of the involved vectors do not fit.