C# Класс Spatial4n.Core.Context.SpatialContext

This is a facade to most of Spatial4j, holding things like {@link DistanceUnits}, {@link DistanceCalculator}, and the coordinate world boundaries, and acting as a factory for the {@link Shape}s.

A SpatialContext has public constructors, but note the convenience instance {@link #GEO}. Also, if you wish to construct one based on configuration information then consider using {@link SpatialContextFactory}.

Thread-safe & immutable.

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Открытые свойства

Свойство	Тип	Описание
GEO	SpatialContext

Открытые методы

Метод	Описание
GetDistCalc ( ) : DistanceCalculator
GetWorldBounds ( ) : Rectangle	The extent of x & y coordinates should fit within the return'ed rectangle. Do NOT invoke reset() on this return type.
IsGeo ( ) : bool	Is this a geospatial context (true) or simply 2d spatial (false).
MakeCircle ( System.Point point, double distance ) : Circle	Construct a circle. The units of "distance" should be the same as x & y.
MakeCircle ( double x, double y, double distance ) : Circle	Construct a circle. The units of "distance" should be the same as x & y.
MakePoint ( double x, double y ) : System.Point	Construct a point.
MakeRectangle ( System.Point lowerLeft, System.Point upperRight ) : Rectangle	Construct a rectangle. The parameters will be normalized.
MakeRectangle ( double minX, double maxX, double minY, double maxY ) : Rectangle	Construct a rectangle. If just one longitude is on the dateline (+/- 180) then potentially adjust its sign to ensure the rectangle does not cross the dateline.
SpatialContext ( bool geo ) : System
SpatialContext ( bool geo, DistanceCalculator calculator, Rectangle worldBounds ) : System
ToString ( ) : String
VerifyX ( double x ) : void	Ensure fits in {@link #getWorldBounds()}
VerifyY ( double y ) : void	Ensure fits in {@link #getWorldBounds()}

Защищенные методы

Метод	Описание
MakeShapeReadWriter ( ) : ShapeReadWriter

Приватные методы

Метод	Описание
ReadShape ( String value ) : Shape
ToString ( Shape shape ) : String

Описание методов

GetDistCalc() публичный Метод

public GetDistCalc ( ) : DistanceCalculator
Результат	DistanceCalculator

GetWorldBounds() публичный Метод

The extent of x & y coordinates should fit within the return'ed rectangle. Do *NOT* invoke reset() on this return type.

public GetWorldBounds ( ) : Rectangle
Результат	Rectangle

IsGeo() публичный Метод

Is this a geospatial context (true) or simply 2d spatial (false).

public IsGeo ( ) : bool
Результат	bool

MakeCircle() публичный Метод

Construct a circle. The units of "distance" should be the same as x & y.

public MakeCircle ( System.Point point, double distance ) : Circle
point	System.Point
distance	double
Результат	Circle

MakeCircle() публичный Метод

Construct a circle. The units of "distance" should be the same as x & y.

public MakeCircle ( double x, double y, double distance ) : Circle
x	double
y	double
distance	double
Результат	Circle

MakePoint() публичный Метод

Construct a point.

public MakePoint ( double x, double y ) : System.Point
x	double
y	double
Результат	System.Point

MakeRectangle() публичный Метод

Construct a rectangle. The parameters will be normalized.

public MakeRectangle ( System.Point lowerLeft, System.Point upperRight ) : Rectangle
lowerLeft	System.Point
upperRight	System.Point
Результат	Rectangle

MakeRectangle() публичный Метод

Construct a rectangle. If just one longitude is on the dateline (+/- 180) then potentially adjust its sign to ensure the rectangle does not cross the dateline.

public MakeRectangle ( double minX, double maxX, double minY, double maxY ) : Rectangle
minX	double
maxX	double
minY	double
maxY	double
Результат	Rectangle

MakeShapeReadWriter() защищенный Метод

protected MakeShapeReadWriter ( ) : ShapeReadWriter
Результат	Spatial4n.Core.Io.ShapeReadWriter

SpatialContext() публичный Метод

public SpatialContext ( bool geo ) : System
geo	bool
Результат	System

SpatialContext() публичный Метод

public SpatialContext ( bool geo, DistanceCalculator calculator, Rectangle worldBounds ) : System
geo	bool	Establishes geo vs cartesian / Euclidean.
calculator	DistanceCalculator	Optional; defaults to Haversine or cartesian depending on units.
worldBounds	Rectangle	Optional; defaults to GEO_WORLDBOUNDS or MAX_WORLDBOUNDS depending on units.
Результат	System

ToString() публичный Метод

public ToString ( ) : String
Результат	String

VerifyX() публичный Метод

Ensure fits in {@link #getWorldBounds()}

public VerifyX ( double x ) : void
x	double
Результат	void

VerifyY() публичный Метод

Ensure fits in {@link #getWorldBounds()}

public VerifyY ( double y ) : void
y	double
Результат	void

Описание свойств

GEO публичное статическое свойство

A popular default SpatialContext implementation for geospatial.

public static SpatialContext,Spatial4n.Core.Context GEO
Результат	SpatialContext