org.h2.util.geometry

Class GeometryUtils.EnvelopeTarget

java.lang.Object

org.h2.util.geometry.GeometryUtils.Target

org.h2.util.geometry.GeometryUtils.EnvelopeTarget

Enclosing class:

GeometryUtils

public static final class GeometryUtils.EnvelopeTarget
extends GeometryUtils.Target

Converter output target that calculates an envelope.

Constructor Summary

Constructors

Constructor and Description
EnvelopeTarget() Creates a new envelope calculation target.

Method Summary

Modifier and Type	Method and Description
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.

Methods inherited from class org.h2.util.geometry.GeometryUtils.Target

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

Methods inherited from class java.lang.Object

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

Constructor Detail

EnvelopeTarget

public EnvelopeTarget()

Creates a new envelope calculation target.

Method Detail

startPoint

protected void startPoint()

Description copied from class: GeometryUtils.Target

Invoked before writing a POINT.

Overrides:

startPoint in class GeometryUtils.Target

startLineString

protected void startLineString(int numPoints)

Description copied from class: GeometryUtils.Target

Invoked before writing a LINESTRING.

Overrides:

startLineString in class GeometryUtils.Target

Parameters:

numPoints - number of points in line string

startPolygon

protected void startPolygon(int numInner,
                            int numPoints)

Description copied from class: GeometryUtils.Target

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

Overrides:

startPolygon in class GeometryUtils.Target

Parameters:

numInner - number of inner polygons

numPoints - number of points in outer polygon

startPolygonInner

protected void startPolygonInner(int numInner)

Description copied from class: GeometryUtils.Target

Invoked before writing an inner polygon in POLYGON.

Overrides:

startPolygonInner in class GeometryUtils.Target

Parameters:

numInner - number of points in inner polygon

addCoordinate

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

Description copied from class: GeometryUtils.Target

Invoked to add a coordinate to a geometry.

Specified by:

addCoordinate in class GeometryUtils.Target

Parameters:

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.

Returns:

the envelope, or null