75 lines
2.4 KiB
Plaintext
75 lines
2.4 KiB
Plaintext
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/* -*-c++-*- */
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/* osgEarth - Geospatial SDK for OpenSceneGraph
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* Copyright 2020 Pelican Mapping
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* http://osgearth.org
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*
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* osgEarth is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*/
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#ifndef OSGEARTHUTIL_EPHEMERIS
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#define OSGEARTHUTIL_EPHEMERIS
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#include <osgEarth/Common>
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#include <osgEarth/DateTime>
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#include <osgEarth/Units>
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#include <osgEarth/GeoData>
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#include <osg/Vec3d>
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namespace osgEarth
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{
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/**
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* Location of a celestial body relative to the Earth.
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*/
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struct CelestialBody
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{
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Angle rightAscension;
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Angle declination;
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Angle latitude;
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Angle longitude;
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Distance altitude;
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osg::Vec3d geocentric;
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osg::Vec3d eci;
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};
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/**
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* An Ephemeris gives the positions of naturally occurring astronimical
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* objects; in that case, the sun and the moon. Also includes some
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* related utility functions.
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*/
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class OSGEARTH_EXPORT Ephemeris : public osg::Referenced
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{
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public:
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//! Return the sun's position for a given date and time.
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virtual CelestialBody getSunPosition(const DateTime& dt) const;
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//! Return the moon's position for a given date and time.
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virtual CelestialBody getMoonPosition(const DateTime& dt) const;
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/**
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* Gets an ECEF position from the right ascension, declination and range
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*
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* @param ra Right ascension in radians
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* @param decl Declination in radians
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* @param range Range in meters
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*/
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osg::Vec3d getECEFfromRADecl(double ra, double decl, double range) const;
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};
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}
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#endif // OSGEARTHUTIL_EPHEMERIS
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