org.deegree.model.spatialschema
Class RingImpl

java.lang.Object
  org.deegree.model.spatialschema.GeometryImpl
      org.deegree.model.spatialschema.PrimitiveImpl
          org.deegree.model.spatialschema.OrientablePrimitiveImpl
              org.deegree.model.spatialschema.OrientableCurveImpl
                  org.deegree.model.spatialschema.RingImpl

All Implemented Interfaces:

Serializable, Geometry, OrientableCurve, OrientablePrimitive, Primitive, Ring

public class RingImpl
extends OrientableCurveImpl
implements Ring, Serializable

default implementation of the Ring interface of the

Since:

2.0

Version:

$Revision: 18195 $, 1.0. $Revision: 18195 $, $Date: 2009-06-18 17:55:39 +0200 (Do, 18. Jun 2009) $

Author:

Andreas Poth, last edited by: $Author: mschneider $

See Also:

Serialized Form

Field Summary

Fields inherited from class org.deegree.model.spatialschema.OrientablePrimitiveImpl

orientation

Fields inherited from class org.deegree.model.spatialschema.GeometryImpl

boundary, centroid, convexHull, crs, empty, envelope, mute, valid

Fields inherited from interface org.deegree.model.spatialschema.Geometry

BUFFER_CAP_BUTT, BUFFER_CAP_ROUND, BUFFER_CAP_SQUARE

Constructor Summary

protected	RingImpl(CurveSegment[] segments, CoordinateSystem crs, char orientation) Constructor, with curve segments, CoordinateSystem and Orientation
protected	RingImpl(Position[] points, CoordinateSystem crs) Constructor, with an array and CoordinateSystem
protected	RingImpl(Position[] points, CoordinateSystem crs, char orientation) Constructor, with an array, CoordinateSystem and Orientation

Method Summary

protected void	calculateCentroid() calculates the centroid of the ring
protected void	calculateParam() recalculates internal parameters
Object	clone()
boolean	contains(Geometry gmo) The Boolean valued operation "contains" shall return TRUE if this Geometry contains another Geometry.
boolean	contains(Position position) The Boolean valued operation "contains" shall return TRUE if this Geometry contains a single point given by a coordinate.
boolean	equals(Object other) Compares the Geometry to be equal to another Geometry.
CurveSegment	getAsCurveSegment() returns the Ring as one CurveSegment
int	getCoordinateDimension() The operation "coordinateDimension" shall return the dimension of the coordinates that define this Geometry, which must be the same as the coordinate dimension of the coordinate reference system for this Geometry.
CurveBoundary	getCurveBoundary() returns the CurveBoundary of the Ring.
CurveSegment[]	getCurveSegments() returns the Ring as a CurveSegments
int	getDimension() The operation "dimension" shall return the inherent dimension of this Geometry, which shall be less than or equal to the coordinate dimension.
Position[]	getPositions() gets the Ring as a Array of positions.
boolean	intersects(Geometry gmo) The Boolean valued operation "intersects" shall return TRUE if this Geometry intersects another Geometry.
boolean	isCycle() Ring must be closed, so isCycle returns TRUE.
boolean	isSimple() Ring is a PrimitiveBoundary, so isSimple returns TRUE.
protected void	setPositions(Position[][] positions) sets the Ring as a ArrayList of points
String	toString()

Methods inherited from class org.deegree.model.spatialschema.OrientablePrimitiveImpl

getOrientation, setOrientation

Methods inherited from class org.deegree.model.spatialschema.GeometryImpl

difference, distance, getBoundary, getBuffer, getBuffer, getCentroid, getConvexHull, getCoordinateSystem, getEnvelope, getTolerance, intersection, isEmpty, isValid, isWithinDistance, setCoordinateSystem, setEmpty, setTolerance, setValid, translate, union

Methods inherited from class java.lang.Object

finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.deegree.model.spatialschema.OrientablePrimitive

getOrientation, setOrientation

Methods inherited from interface org.deegree.model.spatialschema.Geometry

difference, distance, getBoundary, getBuffer, getBuffer, getCentroid, getConvexHull, getCoordinateSystem, getEnvelope, getTolerance, intersection, isEmpty, isWithinDistance, setTolerance, translate, union

Constructor Detail

RingImpl

protected RingImpl(Position[] points,
                   CoordinateSystem crs)
            throws GeometryException

Constructor, with an array and CoordinateSystem

Parameters:

points -

crs -

Throws:

GeometryException

RingImpl

protected RingImpl(Position[] points,
                   CoordinateSystem crs,
                   char orientation)
            throws GeometryException

Constructor, with an array, CoordinateSystem and Orientation

Parameters:

points -

crs -

orientation -

Throws:

GeometryException

RingImpl

protected RingImpl(CurveSegment[] segments,
                   CoordinateSystem crs,
                   char orientation)
            throws GeometryException

Constructor, with curve segments, CoordinateSystem and Orientation

Parameters:

segments -

crs -

orientation -

Throws:

GeometryException

Method Detail

isCycle

public boolean isCycle()

Ring must be closed, so isCycle returns TRUE.

Specified by:

isCycle in interface Ring

Returns:

true because a ring is always a cycle

isSimple

public boolean isSimple()

Ring is a PrimitiveBoundary, so isSimple returns TRUE.

Specified by:

isSimple in interface Ring

Returns:

true because a ring is always a simple

getDimension

public int getDimension()

The operation "dimension" shall return the inherent dimension of this Geometry, which shall be less than or equal to the coordinate dimension. The dimension of a collection of geometric objects shall be the largest dimension of any of its pieces. Points are 0-dimensional, curves are 1-dimensional, surfaces are 2-dimensional, and solids are 3-dimensional.

Specified by:

getDimension in interface Geometry

Returns:

the for this geometry defined dimension.

getCoordinateDimension

public int getCoordinateDimension()

The operation "coordinateDimension" shall return the dimension of the coordinates that define this Geometry, which must be the same as the coordinate dimension of the coordinate reference system for this Geometry.

Specified by:

getCoordinateDimension in interface Geometry

Returns:

the actual dimension

getPositions

public Position[] getPositions()

gets the Ring as a Array of positions.

Specified by:

getPositions in interface Ring

Returns:

all positions the builds the ring

setPositions

protected void setPositions(Position[][] positions)
                     throws GeometryException

sets the Ring as a ArrayList of points

Parameters:

positions -

Throws:

GeometryException

getAsCurveSegment

public CurveSegment getAsCurveSegment()
                               throws GeometryException

returns the Ring as one CurveSegment

Specified by:

getAsCurveSegment in interface Ring

Returns:

the ring as an instance of CurveSegment

Throws:

GeometryException

getCurveSegments

public CurveSegment[] getCurveSegments()

returns the Ring as a CurveSegments

Specified by:

getCurveSegments in interface Ring

Returns:

curve segments

getCurveBoundary

public CurveBoundary getCurveBoundary()

returns the CurveBoundary of the Ring. For a CurveBoundary is defines as the first and the last point of a Curve the CurveBoundary of a Ring contains two indentical point (because a Ring is closed)

Specified by:

getCurveBoundary in interface OrientableCurve

Returns:

the curve boundary of an orientable curve.

equals

public boolean equals(Object other)

Description copied from class: GeometryImpl

Compares the Geometry to be equal to another Geometry.

Overrides:

equals in class GeometryImpl

Parameters:

other - the Geometry to test for equality

Returns:

true if the objects are equal, else false

clone

public Object clone()

Overrides:

clone in class GeometryImpl

intersects

public boolean intersects(Geometry gmo)

Description copied from class: GeometryImpl

The Boolean valued operation "intersects" shall return TRUE if this Geometry intersects another Geometry. Within a Complex, the Primitives do not intersect one another. In general, topologically structured data uses shared geometric objects to capture intersection information.

Specified by:

intersects in interface Geometry

Overrides:

intersects in class GeometryImpl

Parameters:

gmo - the Geometry to intersect with

Returns:

true if the objects intersects, else false

contains

public boolean contains(Geometry gmo)

The Boolean valued operation "contains" shall return TRUE if this Geometry contains another Geometry.

At the moment the operation just works with point geometries

Specified by:

contains in interface Geometry

Overrides:

contains in class GeometryImpl

Parameters:

gmo - the Geometry to test (whether is is contained)

Returns:

true if the given object is contained, else false

contains

public boolean contains(Position position)

Description copied from class: GeometryImpl

The Boolean valued operation "contains" shall return TRUE if this Geometry contains a single point given by a coordinate.

Specified by:

contains in interface Geometry

Overrides:

contains in class GeometryImpl

Parameters:

position - Position to test (whether is is contained)

Returns:

true if the given object is contained, else false

calculateCentroid

protected void calculateCentroid()

calculates the centroid of the ring

calculateParam

protected void calculateParam()

Description copied from class: GeometryImpl

recalculates internal parameters

Specified by:

calculateParam in class GeometryImpl

toString

public String toString()

Overrides:

toString in class GeometryImpl