root / org.gvsig.proj / branches / refactor2018 / org.gvsig.proj / org.gvsig.proj.catalog / org.gvsig.proj.catalog.api / src / main / java / org / gvsig / proj / catalogue / datum / VerticalDatumType.java @ 794
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1 | 793 | cmartinez | /**
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2 | * gvSIG. Desktop Geographic Information System.
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3 | *
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4 | * Copyright (C) 2018 gvSIG Association.
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5 | *
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6 | * This file has been adapted from GeoAPI, see
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7 | * the original copyright headers bellow.
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8 | *
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9 | * This program is free software; you can redistribute it and/or
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10 | * modify it under the terms of the GNU General Public License
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11 | * as published by the Free Software Foundation; either version 2
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12 | * of the License, or (at your option) any later version.
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13 | *
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14 | * This program is distributed in the hope that it will be useful,
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15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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17 | * GNU General Public License for more details.
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18 | *
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19 | * You should have received a copy of the GNU General Public License
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20 | * along with this program; if not, write to the Free Software
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21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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22 | * MA 02110-1301, USA.
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23 | *
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24 | * For any additional information, do not hesitate to contact us
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25 | * at info AT gvsig.com, or visit our website www.gvsig.com.
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26 | *
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27 | * ----------
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28 | *
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29 | * GeoAPI - Java interfaces for OGC/ISO standards
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30 | * http://www.geoapi.org
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31 | *
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32 | * Copyright (C) 2004-2017 Open Geospatial Consortium, Inc.
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33 | * All Rights Reserved. http://www.opengeospatial.org/ogc/legal
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34 | *
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35 | * Permission to use, copy, and modify this software and its documentation, with
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36 | * or without modification, for any purpose and without fee or royalty is hereby
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37 | * granted, provided that you include the following on ALL copies of the software
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38 | * and documentation or portions thereof, including modifications, that you make:
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39 | *
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40 | * 1. The full text of this NOTICE in a location viewable to users of the
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41 | * redistributed or derivative work.
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42 | * 2. Notice of any changes or modifications to the OGC files, including the
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43 | * date changes were made.
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44 | *
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45 | * THIS SOFTWARE AND DOCUMENTATION IS PROVIDED "AS IS," AND COPYRIGHT HOLDERS MAKE
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46 | * NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
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47 | * TO, WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE OR THAT
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48 | * THE USE OF THE SOFTWARE OR DOCUMENTATION WILL NOT INFRINGE ANY THIRD PARTY
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49 | * PATENTS, COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS.
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50 | *
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51 | * COPYRIGHT HOLDERS WILL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL OR
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52 | * CONSEQUENTIAL DAMAGES ARISING OUT OF ANY USE OF THE SOFTWARE OR DOCUMENTATION.
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53 | *
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54 | * The name and trademarks of copyright holders may NOT be used in advertising or
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55 | * publicity pertaining to the software without specific, written prior permission.
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56 | * Title to copyright in this software and any associated documentation will at all
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57 | * times remain with copyright holders.
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58 | */
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59 | package org.gvsig.proj.catalogue.datum; |
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60 | |||
61 | /**
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62 | * Type of a vertical datum.
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63 | */
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64 | public enum VerticalDatumType { |
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65 | /**
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66 | * In some cases, for example oil exploration and production, a geological feature, such as the top
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67 | * or bottom of a geologically identifiable and meaningful subsurface layer, is used as a
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68 | * vertical datum. Other variations to the above three vertical datum types may exist
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69 | * and are all included in this type.
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70 | */
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71 | OTHER_SURFACE, |
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72 | |||
73 | /**
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74 | * The zero value of the associated vertical coordinate system axis is defined to approximate
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75 | * a constant potential surface, usually the geoid. Such a reference surface is usually
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76 | * determined by a national or scientific authority, and is then a well-known, named datum.
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77 | */
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78 | GEOIDAL, |
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79 | |||
80 | /**
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81 | * The zero point of the vertical axis is defined by a surface that has meaning for the
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82 | * purpose which the associated vertical measurements are used for. For hydrographic charts,
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83 | * this is often a predicted nominal sea surface (i.e., without waves or other wind and current
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84 | * effects) that occurs at low tide. Depths are measured in the direction perpendicular
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85 | * (approximately) to the actual equipotential surfaces of the earth's gravity field,
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86 | * using such procedures as echo-sounding.
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87 | */
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88 | DEPTH, |
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89 | |||
90 | /**
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91 | * Atmospheric pressure is the basis for the definition of the origin of the
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92 | * associated vertical coordinate system axis. These are approximations of
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93 | * orthometric heights obtained with the help of a barometer or a barometric
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94 | * altimeter. These values are usually expressed in one of the following units:
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95 | * meters, feet, millibars (used to measure pressure levels), or theta value
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96 | * (units used to measure geopotential height).
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97 | */
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98 | BAROMETRIC, |
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99 | |||
100 | /**
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101 | * The zero point of the associated vertical coordinate system axis is defined
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102 | * by the ellipsoid of the associated horizontal CRS.
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103 | *
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104 | * Note: ISO 19111 ommits the definition of an ELLIPSOIDAL vertical height on intend.
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105 | * GeographicCRS with ellipsoidal height shall be backed by a three-dimensional
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106 | * EllipsoidalCS; they should never be built as CompoundCRS. If nevertheless an
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107 | * ellipsoidal height is needed (for example in order to process a CRS in the WKT
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108 | * format), implementors can get a suitable vertical datum type using
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109 | * VerticalDatumType.valueOf("ELLIPSOIDAL"). Implementors are encouraged to not
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110 | * expose that datum type in public API however.
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111 | */
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112 | ELLIPSOIDAL; |
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113 | } |