91 lines
3.4 KiB
C++
91 lines
3.4 KiB
C++
/********************************************************
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* ██████╗ ██████╗████████╗██╗
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* ██╔════╝ ██╔════╝╚══██╔══╝██║
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* ██║ ███╗██║ ██║ ██║
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* ██║ ██║██║ ██║ ██║
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* ╚██████╔╝╚██████╗ ██║ ███████╗
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* ╚═════╝ ╚═════╝ ╚═╝ ╚══════╝
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* Geophysical Computational Tools & Library (GCTL)
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*
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* Copyright (c) 2023 Yi Zhang (yizhang-geo@zju.edu.cn)
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*
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* GCTL is distributed under a dual licensing scheme. You can redistribute
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* it and/or modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation, either version 2
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* of the License, or (at your option) any later version. You should have
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* received a copy of the GNU Lesser General Public License along with this
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* program. If not, see <http://www.gnu.org/licenses/>.
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*
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* If the terms and conditions of the LGPL v.2. would prevent you from using
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* the GCTL, please consider the option to obtain a commercial license for a
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* fee. These licenses are offered by the GCTL's original author. As a rule,
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* licenses are provided "as-is", unlimited in time for a one time fee. Please
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* send corresponding requests to: yizhang-geo@zju.edu.cn. Please do not forget
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* to include some description of your company and the realm of its activities.
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* Also add information on how to contact you by electronic and paper mail.
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******************************************************/
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#ifndef _GCTL_REFELLIPSOID_H
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#define _GCTL_REFELLIPSOID_H
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#include "../core/macro.h"
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#include "../core/exceptions.h"
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#include "../maths/mathfunc.h"
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namespace gctl
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{
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enum refellipsoid_type_e
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{
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// reference system named as the planet name represents a mean radius reference sphere
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Earth,
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Moon,
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Mars,
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// Reference ellipsoids
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WGS84,
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Ardalan2010,
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};
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/**
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* @brief Reference ellipsoid object. Predefined ellipsoids include
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* Earth, Moon, Mars, WGS84 and Ardalan2010.
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*
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*/
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class refellipsoid
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{
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public:
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refellipsoid(/* args */);
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refellipsoid(refellipsoid_type_e refellipsoid);
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refellipsoid(double R, double r_or_alpha, bool is_alpha = false);
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virtual ~refellipsoid();
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/**
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* @brief Initiate the reference ellipsoid using predefined parameters
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*
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* @param refellipsoid Predefined reference ellipsoid which includes Earth, Moon, Mars, WGS84 and Ardalan2010
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*/
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void set(refellipsoid_type_e refellipsoid);
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/**
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* @brief Initiate the reference ellipsoid using costumed parameters
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*
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* @param R Equator radius
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* @param r_or_alpha Pole radius or the denominator of the flattening parameter
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* @param is_flat Is the second paramter indicates the flattening parameter or not
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*/
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void set(double R, double r_or_flat, bool is_flat = false);
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/**
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* @brief Get the ellipsoidal radius at the inquiring latitude
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*
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* @param lati the inquiring latitude
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* @return ellipsoidal radius
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*/
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double radius_at(double lati);
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private:
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double r_, R_;
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};
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}
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#endif // _GCTL_REFELLIPSOID_H
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