org.deegree.geometry.standard.primitive
Class DefaultCurve

java.lang.Object
  org.deegree.geometry.standard.AbstractDefaultGeometry
      org.deegree.geometry.standard.primitive.DefaultCurve

All Implemented Interfaces:

Geometry, Curve, GeometricPrimitive, GMLObject

Direct Known Subclasses:

DefaultLineString

public class DefaultCurve
extends AbstractDefaultGeometry
implements Curve

Default implementation of Curve.

Version:

$Revision:$, $Date:$

Author:

Markus Schneider , last edited by: $Author:$

Nested Class Summary

Nested classes/interfaces inherited from interface org.deegree.geometry.primitive.Curve

Curve.CurveType

Nested classes/interfaces inherited from interface org.deegree.geometry.primitive.GeometricPrimitive

GeometricPrimitive.PrimitiveType

Nested classes/interfaces inherited from interface org.deegree.geometry.Geometry

Geometry.GeometryType

Field Summary

Fields inherited from class org.deegree.geometry.standard.AbstractDefaultGeometry

crs, id, jtsFactory, jtsGeometry, pm

Constructor Summary

DefaultCurve(String id, CRS crs, PrecisionModel pm, List<CurveSegment> segments)
Creates a new DefaultCurve instance from the given parameters.

Method Summary

protected com.vividsolutions.jts.geom.LineString	buildJTSGeometry()
LineString	getAsLineString() Returns a linear interpolated representation of the curve.
Pair<Point,Point>	getBoundary() The boundary of a curve is the set of points at either end of the curve.
Points	getControlPoints() Convenience method for accessing the control points of linear interpolated curves.
int	getCoordinateDimension() Returns the coordinate dimension, i.e. the dimension of the space that the geometry is embedded in.
List<CurveSegment>	getCurveSegments() Returns the segments that constitute this curve.
Curve.CurveType	getCurveType() Returns the type of curve.
Point	getEndPoint() Returns the end point of the curve.
Geometry.GeometryType	getGeometryType() Must always return Geometry.GeometryType#PRIMITIVE_GEOMETRY.
Measure	getLength(Unit requestedUnit)
GeometricPrimitive.PrimitiveType	getPrimitiveType() Must always return GeometricPrimitive.PrimitiveType.Curve.
Point	getStartPoint() Returns the start point of the curve.
boolean	isClosed() Returns whether the curve forms a closed loop.

Methods inherited from class org.deegree.geometry.standard.AbstractDefaultGeometry

contains, createFromJTS, crosses, equals, getAsDefaultGeometry, getBuffer, getCentroid, getConvexHull, getCoordinateSystem, getDifference, getDistance, getEnvelope, getGMLProperties, getId, getIntersection, getJTSGeometry, getPrecision, getUnion, intersects, isBeyond, isDisjoint, isWithin, isWithinDistance, overlaps, setCoordinateSystem, setGMLProperties, setId, setPrecision, toString, touches

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.deegree.geometry.Geometry

contains, crosses, equals, getBuffer, getCentroid, getConvexHull, getCoordinateSystem, getDifference, getDistance, getEnvelope, getId, getIntersection, getPrecision, getUnion, intersects, isBeyond, isDisjoint, isWithin, isWithinDistance, overlaps, setCoordinateSystem, setGMLProperties, setId, setPrecision, touches

Methods inherited from interface org.deegree.gml.GMLObject

getGMLProperties

Constructor Detail

DefaultCurve

public DefaultCurve(String id,
                    CRS crs,
                    PrecisionModel pm,
                    List<CurveSegment> segments)

Creates a new DefaultCurve instance from the given parameters.

Parameters:

id - identifier, may be null

crs - coordinate reference system, may be null

pm - precision model, may be null

segments - segments that constitute the curve (never null)

Method Detail

getCoordinateDimension

public int getCoordinateDimension()

Description copied from interface: Geometry

Returns the coordinate dimension, i.e. the dimension of the space that the geometry is embedded in.

Specified by:

getCoordinateDimension in interface Geometry

Returns:

the coordinate dimension

getBoundary

public Pair<Point,Point> getBoundary()

Description copied from interface: Curve

The boundary of a curve is the set of points at either end of the curve. If the curve is a cycle, the two ends are identical, and the curve (if topologically closed) is considered to not have a boundary.

Specified by:

getBoundary in interface Curve

Returns:

boundary of a curve. If a curve does not have a boundary because it is closed an empty List shall be retruned

getCurveSegments

public List<CurveSegment> getCurveSegments()

Description copied from interface: Curve

Returns the segments that constitute this curve.

Specified by:

getCurveSegments in interface Curve

Returns:

the segments that constitute this curve

getLength

public Measure getLength(Unit requestedUnit)

Specified by:

getLength in interface Curve

Returns:

length of the curve

isClosed

public boolean isClosed()

Description copied from interface: Curve

Returns whether the curve forms a closed loop.

Specified by:

isClosed in interface Curve

Returns:

true, if the curve forms a closed loop, false otherwise

getAsLineString

public LineString getAsLineString()

Description copied from interface: Curve

Returns a linear interpolated representation of the curve.

NOTE: This method is only safe to use when the curve is a LineString or LinearRing or it only consists of LineStringSegments. In any other case it will fail.

Specified by:

getAsLineString in interface Curve

Returns:

curve as a linestring

getCurveType

public Curve.CurveType getCurveType()

Description copied from interface: Curve

Returns the type of curve.

Specified by:

getCurveType in interface Curve

Returns:

the type of curve

getStartPoint

public Point getStartPoint()

Description copied from interface: Curve

Returns the start point of the curve.

Specified by:

getStartPoint in interface Curve

Returns:

the start point of the curve

getEndPoint

public Point getEndPoint()

Description copied from interface: Curve

Returns the end point of the curve.

Specified by:

getEndPoint in interface Curve

Returns:

the end point of the curve

getPrimitiveType

public GeometricPrimitive.PrimitiveType getPrimitiveType()

Description copied from interface: Curve

Must always return GeometricPrimitive.PrimitiveType.Curve.

Specified by:

getPrimitiveType in interface Curve

Specified by:

getPrimitiveType in interface GeometricPrimitive

Returns:

GeometricPrimitive.PrimitiveType.Curve

getGeometryType

public Geometry.GeometryType getGeometryType()

Description copied from interface: GeometricPrimitive

Must always return Geometry.GeometryType#PRIMITIVE_GEOMETRY.

Specified by:

getGeometryType in interface Geometry

Specified by:

getGeometryType in interface GeometricPrimitive

Returns:

must always return Geometry.GeometryType#PRIMITIVE_GEOMETRY

getControlPoints

public Points getControlPoints()

Description copied from interface: Curve

Convenience method for accessing the control points of linear interpolated curves.

NOTE: This method is only safe to use when the curve is a LineString or LinearRing or it only consists of LineStringSegments. In any other case it will fail.

Specified by:

getControlPoints in interface Curve

Returns:

the control points

buildJTSGeometry

protected com.vividsolutions.jts.geom.LineString buildJTSGeometry()

Overrides:

buildJTSGeometry in class AbstractDefaultGeometry