org.deegree.model.spatialschema
Class SurfacePatchImpl

java.lang.Object
  org.deegree.model.spatialschema.SurfacePatchImpl

All Implemented Interfaces:

Serializable, GenericSurface, SurfacePatch

Direct Known Subclasses:

PolygonImpl

public abstract class SurfacePatchImpl
extends Object
implements GenericSurface, SurfacePatch, Serializable

default implementation of the SurfacePatch interface from package deegree.model.spatialschema. the class is abstract because it should be specialized by derived classes Polygon for example

Version:

$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

protected double	area
protected Point	centroid
protected CoordinateSystem	crs
protected Ring	exteriorRing
protected Ring[]	interiorRings
protected SurfaceInterpolation	interpolation
protected boolean	valid

Constructor Summary

protected	SurfacePatchImpl(Ring exteriorRing, Ring[] interiorRings, CoordinateSystem crs)
protected	SurfacePatchImpl(SurfaceInterpolation interpolation, Position[] exteriorRing, Position[][] interiorRings, CoordinateSystem crs) Creates a new SurfacePatchImpl object.

Method Summary

protected Position	calculateCentroid(Position[] point) calculates the centroid of the surface patch taken from gems iv (modified) this method is only valid for the two-dimensional case.
protected void	calculateParam() calculates the centroid and the area of the surface patch
boolean	equals(Object other)
double	getArea() The operation "area" shall return the area of this GenericSurface.
Point	getCentroid() The operation "centroid" shall return the mathematical centroid for this surfacepatch.
CoordinateSystem	getCoordinateSystem()
Envelope	getEnvelope()
Ring	getExterior()
Position[]	getExteriorRing()
Ring[]	getInterior()
Position[][]	getInteriorRings()
SurfaceInterpolation	getInterpolation() The interpolation determines the surface interpolation mechanism used for this SurfacePatch.
double	getPerimeter()
protected boolean	isValid() returns true if the calculated parameters of the Geometry are valid and false if they must be recalculated
protected void	setValid(boolean valid) invalidates the calculated parameters of the Geometry
String	toString()

Methods inherited from class java.lang.Object

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

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

contains, intersects

Field Detail

crs

protected CoordinateSystem crs

centroid

protected Point centroid

interpolation

protected SurfaceInterpolation interpolation

exteriorRing

protected Ring exteriorRing

interiorRings

protected Ring[] interiorRings

area

protected double area

valid

protected boolean valid

Constructor Detail

SurfacePatchImpl

protected SurfacePatchImpl(Ring exteriorRing,
                           Ring[] interiorRings,
                           CoordinateSystem crs)

Parameters:

exteriorRing -

interiorRings -

crs -

SurfacePatchImpl

protected SurfacePatchImpl(SurfaceInterpolation interpolation,
                           Position[] exteriorRing,
                           Position[][] interiorRings,
                           CoordinateSystem crs)
                    throws GeometryException

Creates a new SurfacePatchImpl object.

Parameters:

interpolation -

exteriorRing -

interiorRings -

crs -

Throws:

GeometryException

Method Detail

setValid

protected void setValid(boolean valid)

invalidates the calculated parameters of the Geometry

Parameters:

valid -

isValid

protected boolean isValid()

returns true if the calculated parameters of the Geometry are valid and false if they must be recalculated

Returns:

true if the calculated parameters of the Geometry are valid and false if they must be recalculated

getInterpolation

public SurfaceInterpolation getInterpolation()

Description copied from interface: SurfacePatch

The interpolation determines the surface interpolation mechanism used for this SurfacePatch. This mechanism uses the control points and control parameters defined in the various subclasses to determine the position of this SurfacePatch.

Specified by:

getInterpolation in interface SurfacePatch

Returns:

the surface interpolation of this surface

getEnvelope

public Envelope getEnvelope()

Specified by:

getEnvelope in interface GenericSurface

Returns:

the bounding box of the surface

getExteriorRing

public Position[] getExteriorRing()

Specified by:

getExteriorRing in interface SurfacePatch

Returns:

the exterior ring of a surfacePatch

getInteriorRings

public Position[][] getInteriorRings()

Specified by:

getInteriorRings in interface SurfacePatch

Returns:

the interior rings of a surfacePatch

getExterior

public Ring getExterior()

Specified by:

getExterior in interface SurfacePatch

Returns:

the exterior ring of a surfacePatch

getInterior

public Ring[] getInterior()

Specified by:

getInterior in interface SurfacePatch

Returns:

the interior rings of a surfacePatch

getPerimeter

public double getPerimeter()

Specified by:

getPerimeter in interface GenericSurface

Returns:

-1

getCoordinateSystem

public CoordinateSystem getCoordinateSystem()

Specified by:

getCoordinateSystem in interface SurfacePatch

Returns:

the coordinate system of the surface patch

equals

public boolean equals(Object other)

Overrides:

equals in class Object

getCentroid

public Point getCentroid()

Description copied from interface: SurfacePatch

The operation "centroid" shall return the mathematical centroid for this surfacepatch. The result is not guaranteed to be on the object.

Specified by:

getCentroid in interface SurfacePatch

Returns:

the centroid

getArea

public double getArea()

Description copied from interface: GenericSurface

The operation "area" shall return the area of this GenericSurface. The area of a 2 dimensional geometric object shall be a numeric measure of its surface area Since area is an accumulation (integral) of the product of two distances, its return value shall be in a unit of measure appropriate for measuring distances squared.

Specified by:

getArea in interface GenericSurface

Specified by:

getArea in interface SurfacePatch

Returns:

the area

calculateParam

protected void calculateParam()

calculates the centroid and the area of the surface patch

calculateCentroid

protected Position calculateCentroid(Position[] point)

calculates the centroid of the surface patch

taken from gems iv (modified)

this method is only valid for the two-dimensional case.

Parameters:

point -

Returns:

the centroid of given positions

toString

public String toString()

Overrides:

toString in class Object