/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2001-2008, Open Source Geospatial Foundation (OSGeo)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* This package contains documentation from OpenGIS specifications.
* OpenGIS consortium's work is fully acknowledged here.
*/
package org.geotools.referencing.crs;
import java.util.Collections;
import java.util.Map;
import org.opengis.referencing.cs.AffineCS;
import org.opengis.referencing.cs.CartesianCS;
import org.opengis.referencing.datum.ImageDatum;
import org.opengis.referencing.crs.ImageCRS;
import org.geotools.referencing.AbstractReferenceSystem;
/**
* An engineering coordinate reference system applied to locations in images. Image coordinate
* reference systems are treated as a separate sub-type because a separate user community exists
* for images with its own terms of reference.
*
* <TABLE CELLPADDING='6' BORDER='1'>
* <TR BGCOLOR="#EEEEFF"><TH NOWRAP>Used with CS type(s)</TH></TR>
* <TR><TD>
* {@link CartesianCS Cartesian},
* {@link AffineCS Affine}
* </TD></TR></TABLE>
*
* @since 2.1
* @source $URL$
* @version $Id$
* @author Martin Desruisseaux (IRD)
*/
public class DefaultImageCRS extends AbstractSingleCRS implements ImageCRS {
/**
* Serial number for interoperability with different versions.
*/
private static final long serialVersionUID = 7312452786096397847L;
/**
* Constructs a new image CRS with the same values than the specified one.
* This copy constructor provides a way to wrap an arbitrary implementation into a
* Geotools one or a user-defined one (as a subclass), usually in order to leverage
* some implementation-specific API. This constructor performs a shallow copy,
* i.e. the properties are not cloned.
*
* @param crs The coordinate reference system to copy.
*
* @since 2.2
*/
public DefaultImageCRS(final ImageCRS crs) {
super(crs);
}
/**
* Constructs an image CRS from a name.
*
* @param name The name.
* @param datum The datum.
* @param cs The coordinate system.
*/
public DefaultImageCRS(final String name,
final ImageDatum datum,
final AffineCS cs)
{
this(Collections.singletonMap(NAME_KEY, name), datum, cs);
}
/**
* Constructs an image CRS from a set of properties. The properties are given unchanged to
* the {@linkplain AbstractReferenceSystem#AbstractReferenceSystem(Map) super-class constructor}.
*
* @param properties Set of properties. Should contains at least {@code "name"}.
* @param datum The datum.
* @param cs The coordinate system.
*/
public DefaultImageCRS(final Map<String,?> properties,
final ImageDatum datum,
final AffineCS cs)
{
super(properties, datum, cs);
}
/**
* Returns the coordinate system.
*/
@Override
public AffineCS getCoordinateSystem() {
return (AffineCS) super.getCoordinateSystem();
}
/**
* Returns the datum.
*/
@Override
public ImageDatum getDatum() {
return (ImageDatum) super.getDatum();
}
/**
* Returns a hash value for this geographic CRS.
*
* @return The hash code value. This value doesn't need to be the same
* in past or future versions of this class.
*/
@Override
public int hashCode() {
return (int)serialVersionUID ^ super.hashCode();
}
}