com.vividsolutions.jts.geom.impl

Class CoordinateArraySequence

java.lang.Object

com.vividsolutions.jts.geom.impl.CoordinateArraySequence

All Implemented Interfaces:

CoordinateSequence, Serializable, Cloneable

public class CoordinateArraySequence
extends Object
implements CoordinateSequence, Serializable

A CoordinateSequence backed by an array of Coordinates. This is the implementation that Geometrys use by default. Coordinates returned by #toArray and #getCoordinate are live -- modifications to them are actually changing the CoordinateSequence's underlying data. A dimension may be specified for the coordinates in the sequence, which may be 2 or 3. The actual coordinates will always have 3 ordinates, but the dimension is useful as metadata in some situations.

Version:

1.7

See Also:

Serialized Form

Field Summary

Fields inherited from interface com.vividsolutions.jts.geom.CoordinateSequence

M, X, Y, Z

Constructor Summary

Constructors

Constructor and Description
CoordinateArraySequence(Coordinate[] coordinates) Constructs a sequence based on the given array of Coordinates (the array is not copied).
CoordinateArraySequence(Coordinate[] coordinates, int dimension) Constructs a sequence based on the given array of Coordinates (the array is not copied).
CoordinateArraySequence(CoordinateSequence coordSeq) Creates a new sequence based on a deep copy of the given CoordinateSequence.
CoordinateArraySequence(int size) Constructs a sequence of a given size, populated with new Coordinates.
CoordinateArraySequence(int size, int dimension) Constructs a sequence of a given size, populated with new Coordinates.

Method Summary

Modifier and Type	Method and Description
Object	clone() Creates a deep copy of the Object
Envelope	expandEnvelope(Envelope env) Expands the given Envelope to include the coordinates in the sequence.
Coordinate	getCoordinate(int i) Get the Coordinate with index i.
void	getCoordinate(int index, Coordinate coord) Copies the i'th coordinate in the sequence to the supplied Coordinate.
Coordinate	getCoordinateCopy(int i) Get a copy of the Coordinate with index i.
int	getDimension() Returns the dimension (number of ordinates in each coordinate) for this sequence.
double	getOrdinate(int index, int ordinateIndex) Returns the ordinate of a coordinate in this sequence.
double	getX(int index) Returns ordinate X (0) of the specified coordinate.
double	getY(int index) Returns ordinate Y (1) of the specified coordinate.
void	setOrdinate(int index, int ordinateIndex, double value) Sets the value for a given ordinate of a coordinate in this sequence.
int	size() Returns the size of the coordinate sequence
Coordinate[]	toCoordinateArray() This method exposes the internal Array of Coordinate Objects
String	toString() Returns the string Representation of the coordinate array

Methods inherited from class java.lang.Object

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

Constructor Detail

CoordinateArraySequence

public CoordinateArraySequence(Coordinate[] coordinates)

Constructs a sequence based on the given array of Coordinates (the array is not copied). The coordinate dimension defaults to 3.

Parameters:

coordinates - the coordinate array that will be referenced.

CoordinateArraySequence

public CoordinateArraySequence(Coordinate[] coordinates,
                               int dimension)

Constructs a sequence based on the given array of Coordinates (the array is not copied).

Parameters:

coordinates - the coordinate array that will be referenced.

the - dimension of the coordinates

CoordinateArraySequence

public CoordinateArraySequence(int size)

Constructs a sequence of a given size, populated with new Coordinates.

Parameters:

size - the size of the sequence to create

CoordinateArraySequence

public CoordinateArraySequence(int size,
                               int dimension)

Constructs a sequence of a given size, populated with new Coordinates.

Parameters:

size - the size of the sequence to create

the - dimension of the coordinates

CoordinateArraySequence

public CoordinateArraySequence(CoordinateSequence coordSeq)

Creates a new sequence based on a deep copy of the given CoordinateSequence. The coordinate dimension is set to equal the dimension of the input.

Parameters:

coordSeq - the coordinate sequence that will be copied.

Method Detail

getDimension

public int getDimension()

Description copied from interface: CoordinateSequence

Returns the dimension (number of ordinates in each coordinate) for this sequence.

Specified by:

getDimension in interface CoordinateSequence

Returns:

the dimension of the sequence.

See Also:

CoordinateSequence.getDimension()

getCoordinate

public Coordinate getCoordinate(int i)

Get the Coordinate with index i.

Specified by:

getCoordinate in interface CoordinateSequence

Parameters:

i - the index of the coordinate

Returns:

the requested Coordinate instance

getCoordinateCopy

public Coordinate getCoordinateCopy(int i)

Get a copy of the Coordinate with index i.

Specified by:

getCoordinateCopy in interface CoordinateSequence

Parameters:

i - the index of the coordinate

Returns:

a copy of the requested Coordinate

getCoordinate

public void getCoordinate(int index,
                          Coordinate coord)

Description copied from interface: CoordinateSequence

Copies the i'th coordinate in the sequence to the supplied Coordinate. Only the first two dimensions are copied.

Specified by:

getCoordinate in interface CoordinateSequence

Parameters:

index - the index of the coordinate to copy

coord - a Coordinate to receive the value

See Also:

CoordinateSequence.getX(int)

getX

public double getX(int index)

Description copied from interface: CoordinateSequence

Returns ordinate X (0) of the specified coordinate.

Specified by:

getX in interface CoordinateSequence

Returns:

the value of the X ordinate in the index'th coordinate

See Also:

CoordinateSequence.getX(int)

getY

public double getY(int index)

Description copied from interface: CoordinateSequence

Returns ordinate Y (1) of the specified coordinate.

Specified by:

getY in interface CoordinateSequence

Returns:

the value of the Y ordinate in the index'th coordinate

See Also:

CoordinateSequence.getY(int)

getOrdinate

public double getOrdinate(int index,
                          int ordinateIndex)

Description copied from interface: CoordinateSequence

Returns the ordinate of a coordinate in this sequence. Ordinate indices 0 and 1 are assumed to be X and Y. Ordinates indices greater than 1 have user-defined semantics (for instance, they may contain other dimensions or measure values).

Specified by:

getOrdinate in interface CoordinateSequence

Parameters:

index - the coordinate index in the sequence

ordinateIndex - the ordinate index in the coordinate (in range [0, dimension-1])

See Also:

CoordinateSequence.getOrdinate(int, int)

clone

public Object clone()

Creates a deep copy of the Object

Specified by:

clone in interface CoordinateSequence

Overrides:

clone in class Object

Returns:

The deep copy

size

public int size()

Returns the size of the coordinate sequence

Specified by:

size in interface CoordinateSequence

Returns:

the number of coordinates

setOrdinate

public void setOrdinate(int index,
                        int ordinateIndex,
                        double value)

Description copied from interface: CoordinateSequence

Sets the value for a given ordinate of a coordinate in this sequence.

Specified by:

setOrdinate in interface CoordinateSequence

Parameters:

index - the coordinate index in the sequence

ordinateIndex - the ordinate index in the coordinate (in range [0, dimension-1])

value - the new ordinate value

See Also:

CoordinateSequence.setOrdinate(int, int, double)

toCoordinateArray

public Coordinate[] toCoordinateArray()

This method exposes the internal Array of Coordinate Objects

Specified by:

toCoordinateArray in interface CoordinateSequence

Returns:

the Coordinate[] array.

expandEnvelope

public Envelope expandEnvelope(Envelope env)

Description copied from interface: CoordinateSequence

Expands the given Envelope to include the coordinates in the sequence. Allows implementing classes to optimize access to coordinate values.

Specified by:

expandEnvelope in interface CoordinateSequence

Parameters:

env - the envelope to expand

Returns:

a ref to the expanded envelope

toString

public String toString()

Returns the string Representation of the coordinate array

Overrides:

toString in class Object

Returns:

The string