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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.sis.referencing.crs;
import java.util.Map;
import javax.xml.bind.annotation.XmlTransient;
import org.opengis.referencing.cs.CartesianCS;
import org.opengis.referencing.cs.SphericalCS;
import org.opengis.referencing.cs.CoordinateSystem;
import org.opengis.referencing.crs.GeocentricCRS;
import org.opengis.referencing.datum.GeodeticDatum;
import org.apache.sis.io.wkt.Formatter;
import org.apache.sis.referencing.cs.AxesConvention;
import org.apache.sis.referencing.AbstractReferenceSystem;
/**
* A 3-dimensional coordinate reference system with the origin at the approximate centre of mass of the earth.
* A geocentric CRS deals with the earth's curvature by taking a 3-dimensional spatial view, which obviates
* the need to model the earth's curvature.
*
* <p><b>Used with datum type:</b>
* {@linkplain org.apache.sis.referencing.datum.DefaultGeodeticDatum Geodetic}.<br>
* <b>Used with coordinate system types:</b>
* {@linkplain org.apache.sis.referencing.cs.DefaultCartesianCS Cartesian} or
* {@linkplain org.apache.sis.referencing.cs.DefaultSphericalCS Spherical}.
* </p>
*
* <h2>Creating new geocentric CRS instances</h2>
* New instances can be created either directly by specifying all information to a factory method (choices 3
* and 4 below), or indirectly by specifying the identifier of an entry in a database (choices 1 and 2 below).
* Choice 1 in the following list is the easiest but most restrictive way to get a geocentric CRS.
* The other choices provide more freedom.
*
* <ol>
* <li>Create a {@code GeocentricCRS} from one of the static convenience shortcuts listed in
* {@link org.apache.sis.referencing.CommonCRS#geocentric()}.</li>
* <li>Create a {@code GeocentricCRS} from an identifier in a database by invoking
* {@link org.apache.sis.referencing.factory.GeodeticAuthorityFactory#createGeocentricCRS(String)}.</li>
* <li>Create a {@code GeocentricCRS} by invoking the {@code CRSFactory.createGeocentricCRS(…)} method
* (implemented for example by {@link org.apache.sis.referencing.factory.GeodeticObjectFactory}).</li>
* <li>Create a {@code GeocentricCRS} by invoking the
* {@linkplain #DefaultGeocentricCRS(Map, GeodeticDatum, CartesianCS) constructor}.</li>
* </ol>
*
* <b>Example:</b> the following code gets a geocentric CRS using the <cite>World Geodetic System 1984</cite> datum:
*
* {@preformat java
* GeodeticDatum datum = CommonCRS.WGS84.geocentric();
* }
*
* <h2>Immutability and thread safety</h2>
* This class is immutable and thus thread-safe if the property <em>values</em> (not necessarily the map itself),
* the coordinate system and the datum instances given to the constructor are also immutable. Unless otherwise noted
* in the javadoc, this condition holds if all components were created using only SIS factories and static constants.
*
* @author Martin Desruisseaux (IRD, Geomatys)
* @version 0.4
*
* @see org.apache.sis.referencing.factory.GeodeticAuthorityFactory#createGeocentricCRS(String)
*
* @since 0.4
* @module
*/
@XmlTransient
public class DefaultGeocentricCRS extends DefaultGeodeticCRS implements GeocentricCRS {
/**
* Serial number for inter-operability with different versions.
*/
private static final long serialVersionUID = 6784642848287659827L;
/**
* For {@link #createSameType(Map, CoordinateSystem)} usage only.
* This constructor does not verify the coordinate system type.
*/
private DefaultGeocentricCRS(final Map<String,?> properties,
final GeodeticDatum datum,
final CoordinateSystem cs)
{
super(properties, datum, cs);
}
/**
* Creates a coordinate reference system from the given properties, datum and coordinate system.
* The properties given in argument follow the same rules than for the
* {@linkplain AbstractReferenceSystem#AbstractReferenceSystem(Map) super-class constructor}.
* The following table is a reminder of main (not all) properties:
*
* <table class="sis">
* <caption>Recognized properties (non exhaustive list)</caption>
* <tr>
* <th>Property name</th>
* <th>Value type</th>
* <th>Returned by</th>
* </tr>
* <tr>
* <td>{@value org.opengis.referencing.IdentifiedObject#NAME_KEY}</td>
* <td>{@link org.opengis.referencing.ReferenceIdentifier} or {@link String}</td>
* <td>{@link #getName()}</td>
* </tr>
* <tr>
* <td>{@value org.opengis.referencing.IdentifiedObject#ALIAS_KEY}</td>
* <td>{@link org.opengis.util.GenericName} or {@link CharSequence} (optionally as array)</td>
* <td>{@link #getAlias()}</td>
* </tr>
* <tr>
* <td>{@value org.opengis.referencing.IdentifiedObject#IDENTIFIERS_KEY}</td>
* <td>{@link org.opengis.referencing.ReferenceIdentifier} (optionally as array)</td>
* <td>{@link #getIdentifiers()}</td>
* </tr>
* <tr>
* <td>{@value org.opengis.referencing.IdentifiedObject#REMARKS_KEY}</td>
* <td>{@link org.opengis.util.InternationalString} or {@link String}</td>
* <td>{@link #getRemarks()}</td>
* </tr>
* <tr>
* <td>{@value org.opengis.referencing.ReferenceSystem#DOMAIN_OF_VALIDITY_KEY}</td>
* <td>{@link org.opengis.metadata.extent.Extent}</td>
* <td>{@link #getDomainOfValidity()}</td>
* </tr>
* <tr>
* <td>{@value org.opengis.referencing.ReferenceSystem#SCOPE_KEY}</td>
* <td>{@link org.opengis.util.InternationalString} or {@link String}</td>
* <td>{@link #getScope()}</td>
* </tr>
* </table>
*
* @param properties the properties to be given to the coordinate reference system.
* @param datum the datum.
* @param cs the coordinate system, which must be three-dimensional.
*
* @see org.apache.sis.referencing.factory.GeodeticObjectFactory#createGeocentricCRS(Map, GeodeticDatum, CartesianCS)
*/
public DefaultGeocentricCRS(final Map<String,?> properties,
final GeodeticDatum datum,
final CartesianCS cs)
{
super(properties, datum, cs);
}
/**
* Creates a coordinate reference system from the given properties, datum and coordinate system.
* The properties given in argument are the same than for the
* {@linkplain #DefaultGeocentricCRS(Map, GeodeticDatum, CartesianCS) above constructor}.
*
* @param properties the properties to be given to the coordinate reference system.
* @param datum the datum.
* @param cs the coordinate system.
*
* @see org.apache.sis.referencing.factory.GeodeticObjectFactory#createGeocentricCRS(Map, GeodeticDatum, SphericalCS)
*/
public DefaultGeocentricCRS(final Map<String,?> properties,
final GeodeticDatum datum,
final SphericalCS cs)
{
super(properties, datum, cs);
}
/**
* Constructs a new coordinate reference system with the same values than the specified one.
* This copy constructor provides a way to convert an arbitrary implementation into a SIS one
* or a user-defined one (as a subclass), usually in order to leverage some implementation-specific API.
*
* <p>This constructor performs a shallow copy, i.e. the properties are not cloned.</p>
*
* @param crs the coordinate reference system to copy.
*
* @see #castOrCopy(GeocentricCRS)
*/
protected DefaultGeocentricCRS(final GeocentricCRS crs) {
super(crs);
}
/**
* Returns a SIS coordinate reference system implementation with the same values than the given
* arbitrary implementation. If the given object is {@code null}, then this method returns {@code null}.
* Otherwise if the given object is already a SIS implementation, then the given object is returned unchanged.
* Otherwise a new SIS implementation is created and initialized to the attribute values of the given object.
*
* @param object the object to get as a SIS implementation, or {@code null} if none.
* @return a SIS implementation containing the values of the given object (may be the
* given object itself), or {@code null} if the argument was null.
*/
public static DefaultGeocentricCRS castOrCopy(final GeocentricCRS object) {
return (object == null) || (object instanceof DefaultGeocentricCRS)
? (DefaultGeocentricCRS) object : new DefaultGeocentricCRS(object);
}
/**
* Returns the GeoAPI interface implemented by this class.
* The SIS implementation returns {@code GeocentricCRS.class}.
*
* <div class="note"><b>Note for implementers:</b>
* Subclasses usually do not need to override this method since GeoAPI does not define {@code GeocentricCRS}
* sub-interface. Overriding possibility is left mostly for implementers who wish to extend GeoAPI with their
* own set of interfaces.</div>
*
* @return {@code GeocentricCRS.class} or a user-defined sub-interface.
*/
@Override
public Class<? extends GeocentricCRS> getInterface() {
return GeocentricCRS.class;
}
/**
* Returns the geodetic datum associated to this geocentric CRS.
* This is the datum given at construction time.
*
* @return the geodetic datum associated to this geocentric CRS.
*/
@Override
public final GeodeticDatum getDatum() {
return super.getDatum();
}
/**
* {@inheritDoc}
*
* @return {@inheritDoc}
*/
@Override
public DefaultGeocentricCRS forConvention(final AxesConvention convention) {
return (DefaultGeocentricCRS) super.forConvention(convention);
}
/**
* Returns a coordinate reference system of the same type than this CRS but with different axes.
*/
@Override
final AbstractCRS createSameType(final Map<String,?> properties, final CoordinateSystem cs) {
return new DefaultGeocentricCRS(properties, super.getDatum(), cs);
}
/**
* Formats this CRS as a <cite>Well Known Text</cite> {@code GeodeticCRS[…]} element.
*
* <div class="note"><b>Example:</b> Well-Known Text (version 2)
* of a geocentric coordinate reference system using the WGS 84 datum.
*
* {@preformat wkt
* GeodeticCRS["Geocentric",
* Datum["World Geodetic System 1984",
* Ellipsoid["WGS84", 6378137.0, 298.257223563, LengthUnit["metre", 1]]],
* PrimeMeridian["Greenwich", 0.0, AngleUnit["degree", 0.017453292519943295]],
* CS["Cartesian", 3],
* Axis["(X)", geocentricX],
* Axis["(Y)", geocentricY],
* Axis["(Z)", geocentricZ],
* LengthUnit["metre", 1]]
* }
*
* <p>Same coordinate reference system using WKT 1. Note that axis directions are totally different.</p>
*
* {@preformat wkt
* GEOCCS["Geocentric",
* DATUM["World Geodetic System 1984",
* SPHEROID["WGS84", 6378137.0, 298.257223563]],
* PRIMEM["Greenwich", 0.0],
* UNIT["metre", 1],
* AXIS["X", OTHER],
* AXIS["Y", EAST],
* AXIS["Z", NORTH]]
* }
* </div>
*
* @return {@code "GeodeticCRS"} (WKT 2) or {@code "GeocCS"} (WKT 1).
*
* @see <a href="http://docs.opengeospatial.org/is/12-063r5/12-063r5.html#49">WKT 2 specification §8</a>
*/
@Override
protected String formatTo(final Formatter formatter) {
return super.formatTo(formatter);
}
//////////////////////////////////////////////////////////////////////////////////////////////////
//////// ////////
//////// XML support with JAXB ////////
//////// ////////
//////// The following methods are invoked by JAXB using reflection (even if ////////
//////// they are private) or are helpers for other methods invoked by JAXB. ////////
//////// Those methods can be safely removed if Geographic Markup Language ////////
//////// (GML) support is not needed. ////////
//////// ////////
//////////////////////////////////////////////////////////////////////////////////////////////////
/**
* Constructs a new object in which every attributes are set to a null value.
* <strong>This is not a valid object.</strong> This constructor is strictly
* reserved to JAXB, which will assign values to the fields using reflexion.
*/
private DefaultGeocentricCRS() {
}
}