org.h2.util.geometry

类 GeometryUtils.EnvelopeTarget

java.lang.Object

org.h2.util.geometry.GeometryUtils.Target

org.h2.util.geometry.GeometryUtils.EnvelopeTarget

封闭类:

GeometryUtils

public static final class GeometryUtils.EnvelopeTarget
extends GeometryUtils.Target

Converter output target that calculates an envelope.

构造器概要

构造器

构造器和说明
EnvelopeTarget() Creates a new envelope calculation target.

方法概要

限定符和类型	方法和说明
protected void	addCoordinate(double x, double y, double z, double m, int index, int total) Invoked to add a coordinate to a geometry.
double[]	getEnvelope() Returns the envelope.
protected void	startLineString(int numPoints) Invoked before writing a LINESTRING.
protected void	startPoint() Invoked before writing a POINT.
protected void	startPolygon(int numInner, int numPoints) Invoked before writing a POLYGON.
protected void	startPolygonInner(int numInner) Invoked before writing an inner polygon in POLYGON.

从类继承的方法 org.h2.util.geometry.GeometryUtils.Target

dimensionSystem, endCollectionItem, endNonEmptyPolygon, endObject, init, startCollection, startCollectionItem

从类继承的方法 java.lang.Object

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

构造器详细资料

EnvelopeTarget

public EnvelopeTarget()

Creates a new envelope calculation target.

方法详细资料

startPoint

protected void startPoint()

从类复制的说明: GeometryUtils.Target

Invoked before writing a POINT.

覆盖:

startPoint 在类中 GeometryUtils.Target

startLineString

protected void startLineString(int numPoints)

从类复制的说明: GeometryUtils.Target

Invoked before writing a LINESTRING.

覆盖:

startLineString 在类中 GeometryUtils.Target

参数:

numPoints - number of points in line string

startPolygon

protected void startPolygon(int numInner,
                            int numPoints)

从类复制的说明: GeometryUtils.Target

Invoked before writing a POLYGON. If polygon is empty, both parameters are 0.

覆盖:

startPolygon 在类中 GeometryUtils.Target

参数:

numInner - number of inner polygons

numPoints - number of points in outer polygon

startPolygonInner

protected void startPolygonInner(int numInner)

从类复制的说明: GeometryUtils.Target

Invoked before writing an inner polygon in POLYGON.

覆盖:

startPolygonInner 在类中 GeometryUtils.Target

参数:

numInner - number of points in inner polygon

addCoordinate

protected void addCoordinate(double x,
                             double y,
                             double z,
                             double m,
                             int index,
                             int total)

从类复制的说明: GeometryUtils.Target

Invoked to add a coordinate to a geometry.

指定者:

addCoordinate 在类中 GeometryUtils.Target

参数:

x - X coordinate

y - Y coordinate

z - Z coordinate (NaN if not used)

m - M coordinate (NaN if not used)

index - 0-based index of coordinate in the current sequence

total - total number of coordinates in the current sequence

getEnvelope

public double[] getEnvelope()

Returns the envelope.

返回:

the envelope, or null