Sphere.h

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// Copyright © 2008-2023 Pioneer Developers. See AUTHORS.txt for details
// Licensed under the terms of the GPL v3. See licenses/GPL-3.txt
 
#pragma once
 
#ifndef _SPHERE_H
#define _SPHERE_H
 
#include <SDL_stdinc.h>
 
#include "vector3.h"
 
struct SSphere {
    SSphere() :
        m_centre(vector3d(0.0)),
        m_radius(1.0) {}
    SSphere(const double rad) :
        m_centre(vector3d(0.0)),
        m_radius(rad) {}
    vector3d m_centre;
    double m_radius;
 
    // Adapted from Ysaneya here: http://www.gamedev.net/blog/73/entry-1666972-horizon-culling/
    bool HorizonCulling(const vector3d &view, const SSphere &obj) const;
};
 
#endif /* _SPHERE_H */