Package io.github.sebasbaumh.postgis

Class PolygonBase<T extends Curve>

java.lang.Object

io.github.sebasbaumh.postgis.Geometry

io.github.sebasbaumh.postgis.PolygonBase<T>

Type Parameters:

T - type of the ring geometries

All Implemented Interfaces:

LineBasedGeometry, Serializable, Iterable<T>

Direct Known Subclasses:

CurvePolygon, Polygon

@NonNullByDefault
public abstract class PolygonBase<T extends Curve>
extends Geometry
implements Iterable<T>, LineBasedGeometry

Base class for a polygon to allow similar handling of straight and circular polygons.

Author:

Sebastian Baumhekel

See Also:

Serialized Form

Field Summary

Fields inherited from class io.github.sebasbaumh.postgis.Geometry

UNKNOWN_SRID

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	PolygonBase(int type, Class<U> clazzRing)	Constructor for subclasses.
protected	PolygonBase(int type, Class<U> clazzRing, Iterable<V> rings)	Constructor for subclasses.
protected	PolygonBase(int type, U lsOuterRing)	Constructor for subclasses.

Method Summary

Modifier and Type	Method	Description
void	addRing(T ring)	Adds a ring.
boolean	checkConsistency()	Do some internal consistency checks on the geometry.
void	clearRings()	Clears all rings.
boolean	equals(Object other)	java.lang.Object equals implementation
Iterable<Point>	getCoordinates()	Gets the coordinates of this Geometry.
Point	getEndPoint()	Gets the end point.
int	getNumberOfCoordinates()	Gets the number of coordinates of this Geometry.
int	getNumberOfRings()	Gets the number of rings.
T	getOuterRing()	Gets the outer ring/boundary of the polygon.
Iterable<T>	getRings()	Gets all inner rings.
Point	getStartPoint()	Gets the start point.
boolean	hasMeasure()	Returns whether we have a measure (4th dimension)
boolean	is3d()	Checks if this Geometry is 3d.
boolean	isClockwise()	Checks if this polygon is oriented in clockwise direction.
boolean	isClosed()	Checks if this line is closed, so the last coordinate is the same as the first coordinate.
boolean	isEmpty()	Ist this Geometry empty, so does it contain no coordinates or other geometries?
Iterator<T>	iterator()
double	length()	Gets the length of this line.
void	setOuterRing(T ls)	Sets the outer ring/boundary of the polygon.
String	toString()

Methods inherited from class io.github.sebasbaumh.postgis.Geometry

getDimension, getSrid, getType, hashCode, numPoints, setSrid

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

PolygonBase

protected PolygonBase(int type,
                      Class<U> clazzRing)

Constructor for subclasses.

Parameters:

clazzRing - class of the ring

type - has to be given by all subclasses

PolygonBase

protected PolygonBase(int type,
                      Class<U> clazzRing,
                      Iterable<V> rings)

Constructor for subclasses.

Parameters:

clazzRing - class of the ring

type - has to be given by all subclasses

rings - rings

PolygonBase

protected PolygonBase(int type,
                      U lsOuterRing)

Constructor for subclasses.

Parameters:

type - has to be given by all subclasses

lsOuterRing - outer ring

Method Detail

addRing

public void addRing(T ring)

Adds a ring.

Parameters:

ring - ring

checkConsistency

public boolean checkConsistency()

Description copied from class: Geometry

Do some internal consistency checks on the geometry. Currently, all Geometries must have a valid dimension (2 or 3) and a valid type. Composed geometries must have all equal SRID, dimensionality and measures, as well as that they do not contain NULL or inconsistent subgeometries. BinaryParser and WKTParser should only generate consistent geometries. BinaryWriter may produce invalid results on inconsistent geometries.

Overrides:

checkConsistency in class Geometry

Returns:

true if all checks are passed.

clearRings

public void clearRings()

Clears all rings.

equals

public boolean equals(@Nullable
                      Object other)

Description copied from class: Geometry

java.lang.Object equals implementation

Overrides:

equals in class Geometry

Parameters:

other - geometry to compare

Returns:

true if equal, false otherwise

getCoordinates

public Iterable<Point> getCoordinates()

Description copied from class: Geometry

Gets the coordinates of this Geometry.

Specified by:

getCoordinates in class Geometry

Returns:

coordinates

getEndPoint

@Nullable
public Point getEndPoint()

Description copied from interface: LineBasedGeometry

Gets the end point.

Specified by:

getEndPoint in interface LineBasedGeometry

Returns:

Point on success, else null

getNumberOfCoordinates

public int getNumberOfCoordinates()

Description copied from class: Geometry

Gets the number of coordinates of this Geometry.

Specified by:

getNumberOfCoordinates in class Geometry

Returns:

number of coordinates

getNumberOfRings

public int getNumberOfRings()

Gets the number of rings.

Returns:

number of rings.

getOuterRing

public T getOuterRing()

Gets the outer ring/boundary of the polygon.

Returns:

outer ring

getRings

public Iterable<T> getRings()

Gets all inner rings.

Returns:

inner rings

getStartPoint

@Nullable
public Point getStartPoint()

Description copied from interface: LineBasedGeometry

Gets the start point.

Specified by:

getStartPoint in interface LineBasedGeometry

Returns:

Point on success, else null

hasMeasure

public boolean hasMeasure()

Description copied from class: Geometry

Returns whether we have a measure (4th dimension)

Specified by:

hasMeasure in class Geometry

Returns:

true if the geometry has a measure, false otherwise

is3d

public boolean is3d()

Description copied from class: Geometry

Checks if this Geometry is 3d.

Specified by:

is3d in class Geometry

Returns:

true on success, else false

isClockwise

public boolean isClockwise()

Checks if this polygon is oriented in clockwise direction. Is false for the outer polygon and true for its holes.

Returns:

true on success, else false

isClosed

public boolean isClosed()

Description copied from interface: LineBasedGeometry

Checks if this line is closed, so the last coordinate is the same as the first coordinate.

Specified by:

isClosed in interface LineBasedGeometry

Returns:

true on success, else false

isEmpty

public boolean isEmpty()

Description copied from class: Geometry

Ist this Geometry empty, so does it contain no coordinates or other geometries?

Specified by:

isEmpty in class Geometry

Returns:

true on success, else false

iterator

public Iterator<T> iterator()

Specified by:

iterator in interface Iterable<T extends Curve>

length

public double length()

Description copied from interface: LineBasedGeometry

Gets the length of this line.

Specified by:

length in interface LineBasedGeometry

Returns:

length

setOuterRing

public void setOuterRing(T ls)

Sets the outer ring/boundary of the polygon.

Parameters:

ls - outer ring

toString

public String toString()

Overrides:

toString in class Object