Package 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
Converter output target that calculates an envelope.
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Field Summary
Fields -
Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionprotected void
addCoordinate
(double x, double y, double z, double m, int index, int total) Invoked to add a coordinate to a geometry.double[]
Returns the envelope.protected void
startLineString
(int numPoints) Invoked before writing a LINESTRING.protected void
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
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Field Details
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enabled
private boolean enabledEnables or disables the envelope calculation. Inner rings of polygons are not counted. -
set
private boolean setWhether envelope was set. -
minX
private double minX -
maxX
private double maxX -
minY
private double minY -
maxY
private double maxY
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Constructor Details
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EnvelopeTarget
public EnvelopeTarget()Creates a new envelope calculation target.
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Method Details
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startPoint
protected void startPoint()Description copied from class:GeometryUtils.Target
Invoked before writing a POINT.- Overrides:
startPoint
in classGeometryUtils.Target
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startLineString
protected void startLineString(int numPoints) Description copied from class:GeometryUtils.Target
Invoked before writing a LINESTRING.- Overrides:
startLineString
in classGeometryUtils.Target
- Parameters:
numPoints
- number of points in line string
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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 classGeometryUtils.Target
- Parameters:
numInner
- number of inner polygonsnumPoints
- number of points in outer polygon
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startPolygonInner
protected void startPolygonInner(int numInner) Description copied from class:GeometryUtils.Target
Invoked before writing an inner polygon in POLYGON.- Overrides:
startPolygonInner
in classGeometryUtils.Target
- Parameters:
numInner
- number of points in inner polygon
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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 classGeometryUtils.Target
- Parameters:
x
- X coordinatey
- Y coordinatez
- Z coordinate (NaN if not used)m
- M coordinate (NaN if not used)index
- 0-based index of coordinate in the current sequencetotal
- total number of coordinates in the current sequence
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getEnvelope
public double[] getEnvelope()Returns the envelope.- Returns:
- the envelope, or null
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