001 /*
002 * GeoAPI - Java interfaces for OGC/ISO standards
003 * http://www.geoapi.org
004 *
005 * Copyright (C) 2004-2012 Open Geospatial Consortium, Inc.
006 * All Rights Reserved. http://www.opengeospatial.org/ogc/legal
007 *
008 * Permission to use, copy, and modify this software and its documentation, with
009 * or without modification, for any purpose and without fee or royalty is hereby
010 * granted, provided that you include the following on ALL copies of the software
011 * and documentation or portions thereof, including modifications, that you make:
012 *
013 * 1. The full text of this NOTICE in a location viewable to users of the
014 * redistributed or derivative work.
015 * 2. Notice of any changes or modifications to the OGC files, including the
016 * date changes were made.
017 *
018 * THIS SOFTWARE AND DOCUMENTATION IS PROVIDED "AS IS," AND COPYRIGHT HOLDERS MAKE
019 * NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
020 * TO, WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE OR THAT
021 * THE USE OF THE SOFTWARE OR DOCUMENTATION WILL NOT INFRINGE ANY THIRD PARTY
022 * PATENTS, COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS.
023 *
024 * COPYRIGHT HOLDERS WILL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL OR
025 * CONSEQUENTIAL DAMAGES ARISING OUT OF ANY USE OF THE SOFTWARE OR DOCUMENTATION.
026 *
027 * The name and trademarks of copyright holders may NOT be used in advertising or
028 * publicity pertaining to the software without specific, written prior permission.
029 * Title to copyright in this software and any associated documentation will at all
030 * times remain with copyright holders.
031 */
032 package org.opengis.referencing.crs;
033
034 import java.util.Map;
035 import org.opengis.referencing.cs.CoordinateSystem;
036 import org.opengis.referencing.datum.EngineeringDatum;
037 import org.opengis.annotation.UML;
038
039 import static org.opengis.annotation.Obligation.*;
040 import static org.opengis.annotation.Specification.*;
041
042
043 /**
044 * A contextually local coordinate reference system. It can be divided into two broad categories:
045 * <p>
046 * <ul>
047 * <li>earth-fixed systems applied to engineering activities on or near the surface of the
048 * earth;</li>
049 * <li>CRSs on moving platforms such as road vehicles, vessels, aircraft, or spacecraft.</li>
050 * </ul>
051 * <p>
052 * Earth-fixed Engineering CRSs are commonly based on a simple flat-earth approximation of the
053 * earth's surface, and the effect of earth curvature on feature geometry is ignored: calculations
054 * on coordinates use simple plane arithmetic without any corrections for earth curvature. The
055 * application of such Engineering CRSs to relatively small areas and "contextually local" is in
056 * this case equivalent to "spatially local".
057 * <p>
058 * Engineering CRSs used on moving platforms are usually intermediate coordinate reference
059 * systems that are computationally required to calculate coordinates referenced to
060 * {@linkplain GeocentricCRS geocentric}, {@linkplain GeographicCRS geographic} or
061 * {@linkplain ProjectedCRS projected} CRSs. These engineering coordinate reference
062 * systems are subject to all the motions of the platform with which they are associated.
063 * In this case "contextually local" means that the associated coordinates are meaningful
064 * only relative to the moving platform. Earth curvature is usually irrelevant and is therefore
065 * ignored. In the spatial sense their applicability may extend from the immediate vicinity of
066 * the platform (e.g. a moving seismic ship) to the entire earth (e.g. in space applications).
067 * The determining factor is the mathematical model deployed in the positioning calculations.
068 * Transformation of coordinates from these moving Engineering CRSs to earth-referenced coordinate
069 * reference systems involves time-dependent coordinate operation parameters.
070 *
071 * <TABLE CELLPADDING='6' BORDER='1'>
072 * <TR BGCOLOR="#EEEEFF"><TH NOWRAP>Used with CS type(s)</TH></TR>
073 * <TR><TD>
074 * {@link org.opengis.referencing.cs.AffineCS Affine},
075 * {@link org.opengis.referencing.cs.CartesianCS Cartesian},
076 * {@link org.opengis.referencing.cs.EllipsoidalCS Ellipsoidal},
077 * {@link org.opengis.referencing.cs.SphericalCS Spherical},
078 * {@link org.opengis.referencing.cs.CylindricalCS Cylindrical},
079 * {@link org.opengis.referencing.cs.PolarCS Polar},
080 * {@link org.opengis.referencing.cs.VerticalCS Vertical},
081 * {@link org.opengis.referencing.cs.LinearCS Linear}
082 * </TD></TR></TABLE>
083 *
084 * @author Martin Desruisseaux (IRD)
085 * @version 3.0
086 * @since 1.0
087 *
088 * @navassoc 1 - - EngineeringDatum
089 * @navassoc 1 - - CoordinateSystem
090 *
091 * @see CRSAuthorityFactory#createEngineeringCRS(String)
092 * @see CRSFactory#createEngineeringCRS(Map, EngineeringDatum, CoordinateSystem)
093 */
094 @UML(identifier="SC_EngineeringCRS", specification=ISO_19111)
095 public interface EngineeringCRS extends SingleCRS {
096 /**
097 * Returns the datum, which must be an engineering one.
098 */
099 @Override
100 @UML(identifier="datum", obligation=MANDATORY, specification=ISO_19111)
101 EngineeringDatum getDatum();
102 }