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body.h
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body.h
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/* Copyright (c) 2017 By the Authors
*
* This file is part of Orbit Simulator.
Orbit Simulator is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Orbit Simulator is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Orbit Simulator. If not, see <http://www.gnu.org/licenses/>.
*
* */
#include "vector3.h"
class Body {
Vector3 m_r, m_v, m_r0, m_v0;
double m_radius, m_gm, m_mass, m_j2;
std::string m_name;
public:
Body(std::string name, Vector3 pos0, Vector3 vel0,
double gm, double radius, double j2=0) {
m_r0 = pos0;
m_r = m_r0;
m_v0 = vel0;
m_v = m_v0;
m_gm = gm;
m_mass = m_gm/6.67408e-11; // Form NIST
m_radius = radius;
m_name = std::move(name);
m_j2 = j2;
}
Vector3 get_position() const{
return m_r;
};
Vector3 get_velocity() const{
return m_v;
};
void set_position(const Vector3& pos) {
m_r = pos;
};
void set_velocity(const Vector3& vel) {
m_v = vel;
};
double get_radius() const{
return m_radius;
};
double get_GM() const{
return m_gm;
};
std::string get_name() const{
return m_name;
};
double get_kinetic_energy() const {
return 0.5 * m_mass * m_v.norm2();
}
Vector3 get_momentum() const {
return m_mass * m_v;
}
Vector3 get_angular_momentum() const {
return m_r * get_momentum();
}
double get_mass() const {
return m_mass;
}
double get_j2() const {
return m_j2;
}
};