49 lines
1.5 KiB
C++
49 lines
1.5 KiB
C++
/*! @file piellipsoidmodel.h
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* @brief Contains geo ellipsoid models
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*/
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/*
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PIP - Platform Independent Primitives
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Contains geo ellipsoid models
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Andrey Bychkov work.a.b@yandex.ru
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This program 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 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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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 PIELLIPSOIDMODEL_H
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#define PIELLIPSOIDMODEL_H
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#include "pimathbase.h"
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class PIP_EXPORT PIEllipsoidModel {
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public:
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PIEllipsoidModel();
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double eccSquared() const {return eccentricity * eccentricity;} // eccentricity squared
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double b() const {return a * sqrt(1 - eccSquared());}
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static PIEllipsoidModel WGS84Ellipsoid();
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static PIEllipsoidModel PZ90Ellipsoid();
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static PIEllipsoidModel GPSEllipsoid();
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static PIEllipsoidModel KrasovskiyEllipsoid();
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double a; /// Major axis of Earth in meters
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double flattening; /// Flattening (ellipsoid parameter)
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double eccentricity; /// Eccentricity (ellipsoid parameter)
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double angVelocity; /// Angular velocity of Earth in radians/sec
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};
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#endif // PIELLIPSOIDMODEL_H
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