circle.h

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#ifndef CIRCLE_H
#define CIRCLE_H
 
#include "bitrl/bitrl_consts.h"
#include "bitrl/bitrl_types.h"
#include "bitrl/utils/geometry/geom_point.h"
 
#include <cmath>
 
namespace bitrl
{
namespace utils::geom
{
 
class Circle
{
public:
    explicit Circle(real_t r);
 
    Circle(real_t r, const GeomPoint<2> &center);
 
    real_t radius() const noexcept { return r_; }
 
    GeomPoint<2> center() const noexcept { return center_; }
 
    real_t area() const;
 
    bool is_inside(const GeomPoint<2> &point, real_t tol = bitrl::consts::TOLERANCE) const;
 
    bool is_inside(const real_t x, const real_t y, real_t tol = bitrl::consts::TOLERANCE) const;
 
private:
    real_t r_;
 
    GeomPoint<2> center_;
};
 
inline Circle::Circle(real_t r) : r_(r), center_(0.0) {}
 
inline Circle::Circle(real_t r, const GeomPoint<2> &center) : r_(r), center_(center) {}
 
inline real_t Circle::area() const { return bitrl::consts::maths::PI * r_ * r_; }
 
inline bool Circle::is_inside(const GeomPoint<2> &point, real_t tol) const
{
 
    if (std::pow((center_[0] - point[0]), 2) + std::pow((center_[1] - point[1]), 2) - r_ * r_ < tol)
    {
        return true;
    }
 
    return false;
}
 
inline bool Circle::is_inside(const real_t x, const real_t y, real_t tol) const
{
    return is_inside({x, y}, tol);
}
 
}
} // namespace rlenvscpp
#endif // CIRCLE_H