org.apache.commons.math3.geometry.euclidean.twod
Class Vector2DFormat

java.lang.Object
  org.apache.commons.math3.geometry.VectorFormat<Euclidean2D>
      org.apache.commons.math3.geometry.euclidean.twod.Vector2DFormat

public class Vector2DFormat
extends VectorFormat<Euclidean2D>

Formats a 2D vector in components list format "{x; y}".

The prefix and suffix "{" and "}" and the separator "; " can be replaced by any user-defined strings. The number format for components can be configured.

White space is ignored at parse time, even if it is in the prefix, suffix or separator specifications. So even if the default separator does include a space character that is used at format time, both input string "{1;1}" and " { 1 ; 1 } " will be parsed without error and the same vector will be returned. In the second case, however, the parse position after parsing will be just after the closing curly brace, i.e. just before the trailing space.

Since:

3.0

Version:

$Id: Vector2DFormat.java 7721 2013-02-14 14:07:13Z CardosoP $

Field Summary

Fields inherited from class org.apache.commons.math3.geometry.VectorFormat

DEFAULT_PREFIX, DEFAULT_SEPARATOR, DEFAULT_SUFFIX

Constructor Summary

Vector2DFormat()
Create an instance with default settings.

Vector2DFormat(NumberFormat format)
Create an instance with a custom number format for components.

Vector2DFormat(String prefix, String suffix, String separator)
Create an instance with custom prefix, suffix and separator.

Vector2DFormat(String prefix, String suffix, String separator, NumberFormat format)
Create an instance with custom prefix, suffix, separator and format for components.

Method Summary

StringBuffer	format(Vector<Euclidean2D> vector, StringBuffer toAppendTo, FieldPosition pos) Formats a Vector object to produce a string.
static Vector2DFormat	getInstance() Returns the default 2D vector format for the current locale.
static Vector2DFormat	getInstance(Locale locale) Returns the default 2D vector format for the given locale.
Vector2D	parse(String source) Parses a string to produce a Vector object.
Vector2D	parse(String source, ParsePosition pos) Parses a string to produce a Vector object.

Methods inherited from class org.apache.commons.math3.geometry.VectorFormat

format, format, getAvailableLocales, getFormat, getPrefix, getSeparator, getSuffix, parseCoordinates

Methods inherited from class java.lang.Object

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

Constructor Detail

Vector2DFormat

public Vector2DFormat()

Create an instance with default settings.

The instance uses the default prefix, suffix and separator: "{", "}", and "; " and the default number format for components.

Vector2DFormat

public Vector2DFormat(NumberFormat format)

Create an instance with a custom number format for components.

Parameters:

format - the custom format for components.

Vector2DFormat

public Vector2DFormat(String prefix,
                      String suffix,
                      String separator)

Create an instance with custom prefix, suffix and separator.

Parameters:

prefix - prefix to use instead of the default "{"

suffix - suffix to use instead of the default "}"

separator - separator to use instead of the default "; "

Vector2DFormat

public Vector2DFormat(String prefix,
                      String suffix,
                      String separator,
                      NumberFormat format)

Create an instance with custom prefix, suffix, separator and format for components.

Parameters:

prefix - prefix to use instead of the default "{"

suffix - suffix to use instead of the default "}"

separator - separator to use instead of the default "; "

format - the custom format for components.

Method Detail

getInstance

public static Vector2DFormat getInstance()

Returns the default 2D vector format for the current locale.

Returns:

the default 2D vector format.

getInstance

public static Vector2DFormat getInstance(Locale locale)

Returns the default 2D vector format for the given locale.

Parameters:

locale - the specific locale used by the format.

Returns:

the 2D vector format specific to the given locale.

format

public StringBuffer format(Vector<Euclidean2D> vector,
                           StringBuffer toAppendTo,
                           FieldPosition pos)

Formats a Vector object to produce a string.

Specified by:

format in class VectorFormat<Euclidean2D>

Parameters:

vector - the object to format.

toAppendTo - where the text is to be appended

pos - On input: an alignment field, if desired. On output: the offsets of the alignment field

Returns:

the value passed in as toAppendTo.

parse

public Vector2D parse(String source)
               throws MathParseException

Parses a string to produce a Vector object.

Specified by:

parse in class VectorFormat<Euclidean2D>

Parameters:

source - the string to parse

Returns:

the parsed Vector object.

Throws:

MathParseException - if the beginning of the specified string cannot be parsed.

parse

public Vector2D parse(String source,
                      ParsePosition pos)

Parses a string to produce a Vector object.

Specified by:

parse in class VectorFormat<Euclidean2D>

Parameters:

source - the string to parse

pos - input/output parsing parameter.

Returns:

the parsed Vector object.